QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Registrant’s telephone number in the United States, including area code, is: (713) 513-2000

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically ~~and posted on its corporate Web site, if any,~~ every Interactive Data File required to be submitted ~~and posted~~ pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit ~~and post~~ such files). Yes ☒ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No ☒

Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date.

	(Stated in millions, except per share amounts)				(Stated in millions, except per share amounts)

	Three Months Ended March 31,				Third Quarter					Nine Months
	2018		2017		2018		2017			2018		2017
Revenue
Services	$	5,736	$	4,828	$	6,345	$	5,763		$	18,222	$	15,928
Product sales		2,093		2,066		2,159		2,142			6,414		6,333
Total Revenue		7,829		6,894		8,504		7,905			24,636		22,261
Interest & other income		42		46		36		64			118		172
Expenses
Cost of services		4,880		4,181		5,336		4,816			15,414		13,507
Cost of sales		1,922		1,895		1,988		1,981			5,892		5,836
Research & engineering		172		211		177		189			524		595
General & administrative		111		98		105		115			330		323
Impairments & other						-		-			184		510
Merger & integration		-		82		-		49	��		-		213
Interest		143		139		147		142			434		422
Income before taxes		643		334		787		677			1,976		1,027
Taxes on income		113		50
Tax expense						129		121			348		269
Net income		530		284		658		556			1,628		758
Net income attributable to noncontrolling interests		5		5		14		11			29		9
Net income attributable to Schlumberger	$	525	$	279	$	644	$	545		$	1,599	$	749

Basic earnings per share of Schlumberger	$	0.38	$	0.20	$	0.46	$	0.39		$	1.15	$	0.54

Diluted earnings per share of Schlumberger	$	0.38	$	0.20	$	0.46	$	0.39		$	1.15	$	0.54

Average shares outstanding:
Basic		1,385		1,393		1,385		1,385			1,385		1,388
Assuming dilution		1,394		1,402		1,392		1,392			1,393		1,395

(Stated in millions)	(Stated in millions)						(Stated in millions)

	Three Months Ended March 31,						Third Quarter						Nine Months
	2018			2017			2018			2017			2018			2017
Net income	$	530		$	284		$	658		$	556		$	1,628		$	758
Currency translation adjustments
Unrealized net change arising during the period		39			45			(47	)		75			(128	)		49
Marketable securities
Unrealized gain (loss) arising during the period		19			(4	)
Unrealized loss arising during the period								(12	)		(41	)		(33	)		(66	)
Cash flow hedges
Net gain on cash flow hedges		5			11
Reclassification to net income of net realized gain		(3	)		-
Net gain (loss) on cash flow hedges								4			8			(6	)		19
Reclassification to net income of net realized (gain) loss								2			(4	)		(2	)		4
Pension and other postretirement benefit plans
Amortization to net income of net actuarial loss		56			43			47			40			141			119
Amortization to net income of net prior service (credit) cost		(1	)		20			(1	)		20			(4	)		60
Income taxes on pension and other postretirement benefit plans		-			(1	)		(2	)		-			(7	)		(2	)
Comprehensive income		645			398			649			654			1,589			941
Comprehensive income attributable to noncontrolling interests		5			5			14			11			29			9
Comprehensive income attributable to Schlumberger	$	640		$	393		$	635		$	643		$	1,560		$	932

(Stated in millions)	(Stated in millions)						(Stated in millions)

	Mar. 31,						Sept. 30,
	2018			Dec. 31,			2018			Dec. 31,
	(Unaudited)			2017			(Unaudited)			2017
ASSETS
Current Assets
Cash	$	1,865		$	1,799		$	1,493		$	1,799
Short-term investments		2,300			3,290			1,361			3,290
Receivables less allowance for doubtful accounts (2018 - $235; 2017 - $241)		8,472			8,084
Receivables less allowance for doubtful accounts (2018 - $245; 2017 - $241)								8,409			8,084
Inventories		4,174			4,046			4,108			4,046
Other current assets		1,244			1,278			1,112			1,278
		18,055			18,497			16,483			18,497
Investments in Affiliated Companies		1,483			1,519			1,497			1,519
Fixed Assets less accumulated depreciation		11,556			11,576			11,739			11,576
Multiclient Seismic Data		707			727			639			727
Goodwill		25,120			25,118			25,134			25,118
Intangible Assets		9,217			9,354			8,930			9,354
Other Assets		5,340			5,196			5,624			5,196
	$	71,478		$	71,987		$	70,046		$	71,987
LIABILITIES AND EQUITY
Current Liabilities
Accounts payable and accrued liabilities	$	9,598		$	10,036		$	9,419		$	10,036
Estimated liability for taxes on income		1,311			1,223			1,265			1,223
Short-term borrowings and current portion of long-term debt		4,586			3,324			3,215			3,324
Dividends payable		700			699			701			699
		16,195			15,282			14,600			15,282
Long-term Debt		13,526			14,875			14,159			14,875
Postretirement Benefits		1,027			1,082			957			1,082
Deferred Taxes		1,579			1,650			1,529			1,650
Other Liabilities		1,825			1,837			1,853			1,837
		34,152			34,726			33,098			34,726
Equity
Common stock		12,998			12,975			13,058			12,975
Treasury stock		(3,937	)		(4,049	)		(3,924	)		(4,049	)
Retained earnings		32,022			32,190			31,712			32,190
Accumulated other comprehensive loss		(4,159	)		(4,274	)		(4,313	)		(4,274	)
Schlumberger stockholders' equity		36,924			36,842			36,533			36,842
Noncontrolling interests		402			419			415			419
		37,326			37,261			36,948			37,261
	$	71,478		$	71,987		$	70,046		$	71,987

(Stated in millions)	(Stated in millions)						(Stated in millions)

	Three Months Ended March 31,						Nine Months Ended September 30,
	2018			2017			2018			2017
Cash flows from operating activities:
Net income	$	530		$	284		$	1,628		$	758
Adjustments to reconcile net income to cash provided by operating activities:
Merger & integration charges		-			82
Impairments and other charges								184			723
Depreciation and amortization ⁽¹⁾		874			989			2,637			2,931
Pension and other postretirement benefits expense		18			37
Stock-based compensation expense		90			88			259			261
Pension and other postretirement benefits funding		(39	)		(29	)		(69	)		(107	)
Earnings of equity method investments, less dividends received		(5	)		(10	)		(41	)		(52	)
Change in assets and liabilities: ⁽²⁾
(Increase) decrease in receivables		(152	)		58
Increase in inventories		(81	)		(33	)
Increase in other current assets		(48	)		(115	)
Increase in other assets		(70	)		(56	)
Increase in receivables								(114	)		(1,049	)
(Increase) decrease in inventories								(68	)		14
Decrease (increase) in other current assets								78			(86	)
(Increase) decrease in other assets								(167	)		202
Decrease in accounts payable and accrued liabilities		(600	)		(670	)		(1,011	)		(533	)
Increase (decrease) in estimated liability for taxes on income		45			(31	)
(Decrease) increase in estimated liability for taxes on income								(32	)		181
Decrease in other liabilities		(7	)		(28	)		(6	)		(74	)
Other		13			90			104			243
NET CASH PROVIDED BY OPERATING ACTIVITIES		568			656			3,382			3,412
Cash flows from investing activities:
Capital expenditures		(454	)		(381	)		(1,539	)		(1,482	)
SPM investments		(240	)		(144	)		(719	)		(492	)
Multiclient seismic data costs capitalized		(26	)		(116	)		(63	)		(223	)
Business acquisitions and investments, net of cash acquired		(13	)		(273	)		(290	)		(382	)
Sale of investments, net		980			883			1,922			3,310
Other		35			(24	)		(36	)		(92	)
NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES		282			(55	)
NET CASH (USED IN) PROVIDED BY INVESTING ACTIVITIES								(725	)		639
Cash flows from financing activities:
Dividends paid		(692	)		(696	)		(2,077	)		(2,086	)
Proceeds from employee stock purchase plan		107			96			227			212
Proceeds from exercise of stock options		20			39			29			49
Stock repurchase program		(97	)		(372	)		(300	)		(868	)
Proceeds from issuance of long-term debt		12			334			220			681
Repayment of long-term debt		(51	)		(1	)		(900	)		(2,206	)
Net decrease in short-term borrowings		(105	)		(1,015	)		(103	)		(1,110	)
Other		19			(22	)		(47	)		17
NET CASH USED IN FINANCING ACTIVITIES		(787	)		(1,637	)		(2,951	)		(5,311	)
Net increase (decrease) in cash before translation effect		63			(1,036	)
Net decrease in cash before translation effect								(294	)		(1,260	)
Translation effect on cash		3			9			(12	)		21
Cash, beginning of period		1,799			2,929			1,799			2,929
Cash, end of period	$	1,865		$	1,902		$	1,493		$	1,690

⁽¹⁾ Includes depreciation of property, plant and equipment and amortization of intangible assets, multiclient seismic data costs and SPM investments.

	(Stated in millions)																		(Stated in millions)

										Accumulated																		Accumulated
										Other																		Other
	Common Stock						Retained			Comprehensive			Noncontrolling						Common Stock						Retained			Comprehensive			Noncontrolling
January 1, 2018 – March 31, 2018	Issued			In Treasury			Earnings			Loss			Interests			Total
January 1, 2018 – September 30, 2018																			Issued			In Treasury			Earnings			Loss			Interests			Total
Balance, January 1, 2018	$	12,975		$	(4,049	)	$	32,190		$	(4,274	)	$	419		$	37,261		$	12,975		$	(4,049	)	$	32,190		$	(4,274	)	$	419		$	37,261
Net income								525						5			530									1,599						29			1,628
Currency translation adjustments											39			5			44												(128	)		(4	)		(132	)
Changes in unrealized gain on marketable securities											19						19												(33	)					(33	)
Changes in fair value of cash flow hedges											2						2												(8	)					(8	)
Pension and other postretirement benefit plans											55						55												130						130
Shares sold to optionees, less shares exchanged		(20	)		40												20			(37	)		66												29
Vesting of restricted stock		(29	)		29												-			(63	)		63												-
Shares issued under employee stock purchase plan		(33	)		140												107			(67	)		294												227
Stock repurchase program					(97	)											(97	)					(300	)											(300	)
Stock-based compensation expense		90															90			259															259
Dividends declared ($0.50 per share)								(693	)								(693	)
Dividends declared ($1.50 per share)																										(2,077	)								(2,077	)
Other		15												(27	)		(12	)		(9	)		2									(29	)		(36	)
Balance, March 31, 2018	$	12,998		$	(3,937	)	$	32,022		$	(4,159	)	$	402		$	37,326
Balance, September 30, 2018																			$	13,058		$	(3,924	)	$	31,712		$	(4,313	)	$	415		$	36,948

	(Stated in millions)																		(Stated in millions)

										Accumulated																		Accumulated
										Other																		Other
	Common Stock						Retained			Comprehensive			Noncontrolling						Common Stock						Retained			Comprehensive			Noncontrolling
January 1, 2017 – March 31, 2017	Issued			In Treasury			Earnings			Loss			Interests			Total
January 1, 2017 – September 30, 2017																			Issued			In Treasury			Earnings			Loss			Interests			Total
Balance, January 1, 2017	$	12,801		$	(3,550	)	$	36,470		$	(4,643	)	$	451		$	41,529		$	12,801		$	(3,550	)	$	36,470		$	(4,643	)	$	451		$	41,529
Net income								279						5			284									749						9			758
Currency translation adjustments											45						45												49						49
Changes in unrealized gain on marketable securities											(4	)					(4	)											(66	)					(66	)
Changes in fair value of cash flow hedges											11						11												23						23
Pension and other postretirement benefit plans											62						62												177						177
Shares sold to optionees, less shares exchanged		(29	)		68												39			(39	)		88												49
Vesting of restricted stock		(49	)		49												-			(98	)		98												-
Shares issued under employee stock purchase plan		(12	)		108												96			(52	)		264												212
Stock repurchase program					(372	)											(372	)					(868	)											(868	)
Stock-based compensation expense		88															88			261															261
Dividends declared ($0.50 per share)								(697	)								(697	)
Dividends declared ($1.50 per share)																										(2,083	)								(2,083	)
Other		(19	)											(8	)		(27	)		(10	)		2									(23	)		(31	)
Balance, March 31, 2017	$	12,780		$	(3,697	)	$	36,052		$	(4,529	)	$	448		$	41,054
Balance, September 30, 2017																			$	12,863		$	(3,966	)	$	35,136		$	(4,460	)	$	437		$	40,010

			(Stated in millions)								(Stated in millions)

						Shares								Shares
	Issued		In Treasury			Outstanding			Issued		In Treasury			Outstanding
Balance, January 1, 2018		1,434		(50	)		1,384			1,434		(50	)		1,384
Vesting of restricted stock										-		1			1
Shares issued under employee stock purchase plan		-		2			2			-		4			4
Stock repurchase program		-		(1	)		(1	)		-		(4	)		(4	)
Balance, March 31, 2018		1,434		(49	)		1,385
Balance, September 30, 2018										1,434		(49	)		1,385

The accompanying unaudited consolidated financial statements of Schlumberger Limited and its subsidiaries ~~(Schlumberger)~~(“Schlumberger”) have been prepared in accordance with generally accepted accounting principles in the United States of America for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. In the opinion of Schlumberger management, all adjustments considered necessary for a fair statement have been included in the accompanying unaudited financial statements. All intercompany transactions and balances have been eliminated in consolidation. Operating results for the ~~three-month~~nine-month period ended ~~March 31,~~September 30, 2018 are not necessarily indicative of the results that may be expected for the full year ending December 31, 2018. The December 31, 2017 balance sheet information has been derived from the Schlumberger 2017 audited financial statements. For further information, refer to the Consolidated Financial Statements and notes thereto included in the Schlumberger Annual Report on Form 10-K for the year ended December 31, 2017, filed with the Securities and Exchange Commission on January 24, 2018.

In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2014-09, Revenue from Contracts with Customers. This ASU amended the existing accounting standards for revenue recognition and requires companies to recognize revenue when control of the promised goods or services is transferred to a customer at an amount that reflects the consideration a company expects to receive in exchange for those goods or services. Schlumberger adopted this ASU on January 1, 2018 using the modified retrospective transition method applied to those contracts which were not completed as of January 1, 2018. Prior period amounts have not been adjusted and continue to be reflected in accordance with Schlumberger’s historical accounting. The adoption of this ASU did not have a material impact on Schlumberger’s Consolidated Financial Statements.

Schlumberger recognizes revenue upon the transfer of control of promised products or services to customers at an amount that reflects the consideration it expects to receive in exchange for these products or services. The vast majority of Schlumberger’s services and product offerings are short-term in nature. The time between invoicing and when payment is due under these arrangements is generally 30 to 60 days.

Revenue is occasionally generated from contractual arrangements that include multiple performance obligations. Revenue from these arrangements is allocated to each performance obligation based on its relative standalone selling price. Standalone selling prices are generally determined based on the prices charged to customers or using expected costs plus margin.

Revenue is recognized for certain long-term construction-type contracts over time. These contracts involve significant design and engineering efforts in order to satisfy custom designs for customer-specific applications. Revenue is recognized as work progresses on each contract. Progress is measured by the ratio of actual costs incurred to date on the project in relation to total estimated project costs. The estimate of total project costs has a significant impact on both the amount of revenue recognized as well as the related profit on a project. Revenue and profits on contracts can also be significantly affected by change orders and claims. Due to the nature of these projects, adjustments to estimates of contract revenue and total contract costs may be required as work progresses. Progress billings are generally issued upon completion of certain phases of work as stipulated in the contract. Any expected losses on a project are recorded in full in the period in which they ~~became~~become probable.

Revenue in excess of billings related to contracts where revenue is recognized over time was $0.2 billion at September 30, 2018 and $0.3 billion at ~~both March 31, 2018 and~~ December 31, 2017. Such amounts are included within Receivables less allowance for doubtful accounts in the Consolidated Balance Sheet.

Due to the nature of its business, Schlumberger does not have significant backlog. Total backlog was ~~$2.8~~$2.5 billion at ~~March 31,~~September 30, 2018, of which approximately ~~50%~~59% is expected to be recognized as revenue over the next 12 months.

Billings and cash collections in excess of revenue was ~~$0.9~~$0.8 billion at ~~March 31,~~both September 30, 2018 and ~~$0.8 billion at~~ December 31, 2017. Such amounts are included within Accounts payable and accrued liabilities in the Consolidated Balance Sheet.

In February 2016, the FASB issued ASU No. 2016-02, Leases. This ASU requires lessees to recognize a right of use asset and lease liability on the balance sheet for all leases, with the exception of short-term leases. This ASU is effective for Schlumberger on

January 1, 2019, with early adoption permitted. Based on its current lease portfolio, Schlumberger estimates that the adoption of this ASU will result in approximately ~~$1.3~~$1.2 billion of additional assets and liabilities being reflected on its Consolidated Balance Sheet.

There were no charges or credits recorded during the first ~~quarter~~and third quarters of 2018.

During the second quarter of 2018, Schlumberger recorded a $184 million pretax charge ($164 million after-tax) associated with headcount reductions, primarily to further streamline its support cost structure. This charge is classified in Impairments & other in the Consolidated Statement of Income.

Schlumberger recorded the following charges and credits during the first nine months of 2017:

During the second quarter of 2017, Schlumberger also entered into discussions with another customer relating to certain of its outstanding accounts receivable. As a result of those discussions, Schlumberger recorded a charge of $50 million to adjust these receivables to their estimated net realizable value.

These charges are classified in Impairments & other in the Consolidated Statement of Income.

The following is a summary of the charges and credits recorded during the first nine months of 2017:

On December 22, 2017, the US enacted the Tax Cuts and Jobs Act (the “Act”). The Act, which is also commonly referred to as “US tax reform”, significantly changes US corporate income tax laws by, among other things, reducing the US corporate income tax rate to 21% starting in 2018 and creating a territorial tax system with a one-time mandatory tax on previously

Although the $76 million net charge represents a reasonable estimate of the impact of the income tax effects of the Act on Schlumberger’s Consolidated Financial Statements as of December 31, 2017, it should be considered provisional. Once Schlumberger finalizes certain tax positions, ~~when it files its 2017 US tax return,~~ it will be able to conclude whether any further adjustments are required. Any adjustments to these provisional amounts will be reported as a component of Taxes on income in the reporting period in which any such adjustments are determined, which will be no later than the fourth quarter of 2018.

The following is a reconciliation from basic earnings per share of Schlumberger to diluted earnings per share of Schlumberger:

(Stated in millions, except per share amounts)	(Stated in millions, except per share amounts)												(Stated in millions, except per share amounts)

	2018						2017						2018						2017
	Schlumberger Net Income		Average Shares Outstanding		Earnings per Share		Schlumberger Net Income		Average Shares Outstanding		Earnings per Share		Schlumberger Net Income		Average Shares Outstanding		Earnings per Share		Schlumberger Net Income		Average Shares Outstanding		Earnings per Share
First Quarter
Third Quarter
Basic	$	525		1,385	$	0.38	$	279		1,393	$	0.20	$	644		1,385	$	0.46	$	545		1,385	$	0.39
Assumed exercise of stock options		-		1				-		4				-		-				-		1
Unvested restricted stock		-		8				-		5				-		7				-		6
Diluted	$	525		1,394	$	0.38	$	279		1,402	$	0.20	$	644		1,392	$	0.46	$	545		1,392	$	0.39


													2018						2017
													Schlumberger Net Income		Average Shares Outstanding		Earnings per Share		Schlumberger Net Income		Average Shares Outstanding		Earnings per Share
Nine Months
Basic													$	1,599	$	1,385	$	1.15	$	749	$	1,388	$	0.54
Assumed exercise of stock options														-		1				-		2
Unvested restricted stock														-		7				-		5
Diluted													$	1,599	$	1,393	$	1.15	$	749	$	1,395	$	0.54

The number of outstanding options to purchase shares of Schlumberger common stock that were not included in the computation of diluted earnings per share, because to do so would have had an antidilutive effect, was as follows:

(Stated in millions)	(Stated in millions)				(Stated in millions)

	2018		2017		2018		2017
First Quarter		39		23
Third Quarter						40		43
Nine Months						40		30

A summary of inventories, which are stated at the lower of average cost or net realizable value, follows:

(Stated in millions)	(Stated in millions)				(Stated in millions)

	Mar. 31,		Dec. 31,		Sept. 30,		Dec. 31,
	2018		2017		2018		2017
Raw materials & field materials	$	1,910	$	1,846	$	1,885	$	1,846
Work in progress		556		503		541		503
Finished goods		1,708		1,697		1,682		1,697
	$	4,174	$	4,046	$	4,108	$	4,046

(Stated in millions)	(Stated in millions)				(Stated in millions)

	Mar. 31,		Dec. 31,		Sept. 30,		Dec. 31,
	2018		2017		2018		2017
Property, plant & equipment	$	38,104	$	37,813	$	38,695	$	37,813
Less: Accumulated depreciation		26,548		26,237		26,956		26,237
	$	11,556	$	11,576	$	11,739	$	11,576

Depreciation expense relating to fixed assets was ~~$523 million and $613 million in first quarter of 2018 and 2017, respectively.~~as follows:

The change in the carrying amount of multiclient seismic data for the ~~three~~nine months ended ~~March 31,~~September 30, 2018 was as follows:

(Stated in millions)	(Stated in millions)			(Stated in millions)

Balance at December 31, 2017	$	727		$	727
Capitalized in period		26			63
Charged to expense		(46	)		(151	)
Balance at March 31, 2018	$	707
Balance at September 30, 2018				$	639

The gross book value, accumulated amortization and net book value of intangible assets were as follows:

	(Stated in millions)												(Stated in millions)

	Mar. 31, 2018						Dec. 31, 2017						Sept. 30, 2018						Dec. 31, 2017
	Gross		Accumulated		Net Book		Gross		Accumulated		Net Book		Gross		Accumulated		Net Book		Gross		Accumulated		Net Book
	Book Value		Amortization		Value		Book Value		Amortization		Value		Book Value		Amortization		Value		Book Value		Amortization		Value
Customer relationships	$	4,833	$	1,079	$	3,754	$	4,832	$	1,020	$	3,812	$	4,775	$	1,187	$	3,588	$	4,832	$	1,020	$	3,812
Technology/technical know-how		3,619		1,127		2,492		3,634		1,078		2,556		3,578		1,197		2,381		3,634		1,078		2,556
Tradenames		2,806		558		2,248		2,806		533		2,273		2,806		609		2,197		2,806		533		2,273
Other		1,326		603		723		1,295		582		713		1,362		598		764		1,295		582		713
	$	12,584	$	3,367	$	9,217	$	12,567	$	3,213	$	9,354	$	12,521	$	3,591	$	8,930	$	12,567	$	3,213	$	9,354

Amortization expense charged to income was ~~$165 million during the first quarter of 2018 and $169 million during the fist quarter of 2017.~~as follows:

Based on the net book value of intangible assets at ~~March 31,~~September 30, 2018, amortization charged to income for the subsequent five years is estimated to be: ~~remaining three quarters~~fourth quarter of 2018—$~~519~~169 million; 2019—$~~672~~680 million; 2020—$~~640~~648 million; 2021—$617 million; 2022—$~~607~~609 million; and 2023—$594 million.

(Stated in millions)	(Stated in millions)				(Stated in millions)

	Mar. 31,		Dec. 31,		Sept. 30,		Dec. 31,
	2018		2017		2018		2017
4.00% Senior Notes due 2025	$	1,742	$	1,741	$	1,742	$	1,741
3.30% Senior Notes due 2021		1,595		1,595		1,596		1,595
3.00% Senior Notes due 2020		1,594		1,593		1,595		1,593
3.65% Senior Notes due 2023		1,492		1,492		1,493		1,492
4.20% Senior Notes due 2021		1,100		1,100		1,100		1,100
2.40% Senior Notes due 2022		997		996		997		996
3.63% Senior Notes due 2022		846		846		847		846
2.65% Senior Notes due 2022		598		598		598		598
2.20% Senior Notes due 2020		498		498		498		498
7.00% Notes due 2038		212		212		211		212
4.50% Notes due 2021		134		135		133		135
5.95% Notes due 2041		115		115		115		115
3.60% Notes due 2022		109		110		109		110
5.13% Notes due 2043		99		99		99		99
4.00% Notes due 2023		82		82		82		82
3.70% Notes due 2024		56		56		55		56
0.63% Guaranteed Notes due 2019		-		712		-		712
1.50% Guaranteed Notes due 2019		-		603		-		603
Commercial paper borrowings		1,700		1,694		2,600		1,694
Other		557		598		289		598
	$	13,526	$	14,875	$	14,159	$	14,875

The estimated fair value of Schlumberger’s Long-term Debt, based on quoted market prices at ~~March 31,~~September 30, 2018 and December 31, 2017, was ~~$13.6~~$14.1 billion and $15.2 billion, respectively.

Borrowings under Schlumberger’s commercial paper programs at ~~both March 31,~~September 30, 2018 were $3.1 billion, of which $0.5 billion was classified in Short-term borrowings and current portion of long-term debt in the Consolidated Balance Sheet. At December 31, 2017, borrowings under the commercial paper programs were $3.0 billion, of which $1.3 billion was classified in Short-term borrowings and current portion of long-term debt in the Consolidated Balance Sheet.

Schlumberger is exposed to market risks related to fluctuations in foreign currency exchange rates and interest rates. To mitigate these risks, Schlumberger utilizes derivative instruments. Schlumberger does not enter into derivative transactions for speculative purposes.

Schlumberger is subject to interest rate risk on its debt and its investment portfolio. Schlumberger maintains an interest rate risk management strategy that uses a mix of variable and fixed rate debt combined with its investment portfolio, and occasionally interest rate swaps, to mitigate the exposure to changes in interest rates.

During 2013, Schlumberger entered into a cross-currency swap for a notional amount of €0.5 billion in order to hedge changes in the fair value of Schlumberger’s €0.5 billion 1.50% Guaranteed Notes due 2019. Under the terms of this swap, Schlumberger will receive

interest at a fixed rate of 1.50% on the euro notional amount and pay interest at a floating rate of three-month LIBOR plus approximately 64 basis points on the US dollar notional amount.

This cross-currency swap is designated as a fair value hedge of the underlying debt and is marked to market, with gains and losses recognized immediately in income to largely offset the effects on changes in the fair value of the hedged debt.

During 2017, a Canadian dollar functional currency subsidiary of Schlumberger issued $1.1 billion of US dollar denominated debt. Schlumberger entered into cross-currency swaps for an aggregate notional amount of $1.1 billion in order to hedge changes in the fair value of its $0.5 billion 2.20% Senior Notes due 2020 and its $0.6 billion 2.65% Senior Notes due 2022. These cross-currency swaps effectively convert the US dollar notes to Canadian dollar denominated debt with fixed annual interest rates of 1.97% and 2.52%, respectively.

These cross-currency swaps are designated as cash flow hedges. The changes in the fair values of the hedges are recorded on the Consolidated Balance Sheet and in Accumulated Other Comprehensive Loss. Amounts recorded in Accumulated Other Comprehensive Loss are reclassified to earnings in the same periods that the underlying hedged item ~~affects net income.~~is recognized in earnings.

At ~~March 31,~~September 30, 2018, Schlumberger had fixed rate debt aggregating ~~$13.6~~$13.3 billion and variable rate debt aggregating ~~$4.5~~$4.1 billion, after taking into account the effect of interest rate swaps.

Short-term investments were ~~$2.3~~$1.4 billion at ~~March 31,~~September 30, 2018. The carrying value of these investments approximated fair value.

As a multinational company, Schlumberger conducts its business in ~~over~~more than 85 countries. Schlumberger’s functional currency is primarily the US dollar. However, outside the United States, a significant portion of Schlumberger’s expenses is incurred in foreign currencies. Therefore, when the US dollar weakens (strengthens) in relation to the foreign currencies of the countries in which Schlumberger conducts business, the US dollar-reported expenses will increase (decrease).

Schlumberger is exposed to risks on future cash flows to the extent that the local currency is not the functional currency and expenses denominated in local currency are not equal to revenues denominated in local currency. Schlumberger is also exposed to risks on future cash flows relating to certain of its fixed rate debt denominated in currencies other than the functional currency. Schlumberger uses foreign currency forward contracts to provide a hedge against a portion of these cash flow risks. These contracts are accounted for as cash flow hedges, with the changes in the fair value of the hedge recorded on the Consolidated Balance Sheet and in Accumulated Other Comprehensive Loss. Amounts recorded in Accumulated Other Comprehensive Loss are reclassified into earnings in the same period or periods that the hedged item is recognized in earnings.

At ~~March 31,~~September 30, 2018, Schlumberger recognized a cumulative net $5 million ~~gain~~loss in Accumulated ~~other comprehensive loss~~Other Comprehensive Loss relating to revaluation of foreign currency forward contracts designated as cash flow hedges, the majority of which is expected to be reclassified into earnings within the next 12 months.

Schlumberger is exposed to changes in the fair value of assets and liabilities that are denominated in currencies other than the functional currency. While Schlumberger uses foreign currency forward contracts and foreign currency options to economically hedge this exposure as it relates to certain currencies, these contracts are not designated as hedges for accounting purposes. Instead, the fair value of the contracts is recorded on the Consolidated Balance Sheet, and changes in the fair value are recognized in the Consolidated Statement of Income as are changes in fair value of the hedged item.

At ~~March 31,~~September 30, 2018, contracts were outstanding for the US dollar equivalent of $5.0 billion in various foreign currencies, of which ~~$1.8~~$1.9 billion relates to hedges of debt denominated in currencies other than the functional currency.

The effect of derivative instruments designated as fair value and cash flow hedges, and those not designated as hedges, on the Consolidated Statement of Income was as follows:

	(Stated in millions)											(Stated in millions)

	Gain Recognized in Income					Gain (Loss) Recognized in Income
	First Quarter					Third Quarter						Nine Months
	2018		2017		Consolidated Statement of Income Classification	2018			2017			2018			2017			Consolidated Statement of Income Classification
Derivatives designated as fair value hedges:
Cross currency swap	$	27	$	18	Interest expense	$	6		$	19		$	(6	)	$	66		Interest expense

Derivatives designated as cash flow hedges:
Foreign exchange contracts	$	4	$	-	Cost of services/sales	$	(2	)	$	-		$	3		$	-		Cost of services/sales
Cross currency swap		19		-	Interest expense		(30	)		-			25			-		Interest expense
	$	23	$	-		$	(32	)	$	-		$	28		$	-
Derivatives not designated as hedges:
Foreign exchange contracts	$	28	$	6	Cost of services/sales	$	(17	)	$	(10	)	$	15		$	(3	)	Cost of services/sales

Schlumberger ~~and its subsidiaries are~~is party to various legal proceedings from time to time. A liability is accrued when a loss is both probable and can be reasonably estimated. Management believes that the probability of a material loss with respect to any currently pending legal proceeding is remote. However, litigation is inherently uncertain and it is not possible to predict the ultimate disposition of any of these proceedings.

				(Stated in millions)												(Stated in millions)

	First Quarter 2018						First Quarter 2017						Third Quarter 2018						Third Quarter 2017
				Income						Income						Income						Income
				Before						Before						Before						Before
	Revenue			Taxes			Revenue			Taxes			Revenue			Taxes			Revenue			Taxes
Reservoir Characterization	$	1,556		$	307		$	1,618		$	281		$	1,673		$	373		$	1,771		$	311
Drilling		2,126			293			1,985			229			2,429			339			2,120			301
Production		2,959			216			2,187			110			3,252			320			2,876			283
Cameron		1,310			166			1,229			162			1,298			148			1,297			194
Eliminations & other		(122	)		(8	)		(125	)		(25	)		(148	)		(28	)		(159	)		(30	)
Pretax operating income					974						757						1,152						1,059
Corporate & other ⁽¹⁾					(225	)					(239	)					(234	)					(234	)
Interest income ⁽²⁾					25						24						8						30
Interest expense ⁽³⁾					(131	)					(126	)					(139	)					(129	)
Charges and credits ⁽⁴⁾					-						(82	)					-						(49	)
	$	7,829		$	643		$	6,894		$	334		$	8,504		$	787		$	7,905		$	677

⁽¹⁾ Comprised principally of certain corporate expenses not allocated to the segments, stock-based compensation costs, amortization expense associated with certain intangible assets, certain centrally managed initiatives and other nonoperating items.

⁽²⁾ Interest income excludes amounts which are included in the segments’ income ($32 million in 2018; $5$4 million in 2017).

⁽³⁾Interest expense excludes amounts which are included in the segments’ income ($128 million in 2018; $13 million in 2017).

				(Stated in millions)

	Nine Months 2018						Nine Months 2017
				Income						Income
				Before						Before
	Revenue			Taxes			Revenue			Taxes
Reservoir Characterization	$	4,865		$	1,030		$	5,148		$	891
Drilling		6,789			921			6,212			832
Production		9,468			851			7,559			614
Cameron		3,902			481			3,791			530
Eliminations & other		(388	)		(63	)		(449	)		(101	)
Pretax operating income					3,220						2,766
Corporate & other ⁽¹⁾					(699	)					(715	)
Interest income ⁽²⁾					44						82
Interest expense ⁽³⁾					(405	)					(383	)
Charges and credits ⁽⁴⁾					(184	)					(723	)
	$	24,636		$	1,976		$	22,261		$	1,027

13⁽¹⁾Comprised principally of certain corporate expenses not allocated to the segments, stock-based compensation costs, amortization expense associated with certain intangible assets, certain centrally managed initiatives and other nonoperating items.

⁽²⁾Interest income excludes amounts which are included in the segments’ income ($7 million in 2018; $15 million in 2017).

⁽³⁾Interest expense excludes amounts which are included in the segments’ income ($29 million in 2018; $39 million in 2017).

			(Stated in millions)						(Stated in millions)

	First Quarter				Third Quarter				Nine Months
	2018		2017		2018		2017		2018		2017
North America	$	2,835	$	1,871	$	3,189	$	2,602	$	9,164	$	6,675
Latin America		870		952		978		952		2,767		2,942
Europe/CIS/Africa		1,704		1,652		1,820		1,843		5,316		5,255
Middle East & Asia		2,309		2,318		2,417		2,352		7,079		7,007
Eliminations & other		111		101		100		156		310		382
	$	7,829	$	6,894	$	8,504	$	7,905	$	24,636	$	22,261

North America and International revenue disaggregated by ~~Group~~segment was as follows:

							(Stated in millions)											(Stated in millions)

	First Quarter 2018												Third Quarter 2018
	North						Eliminations						North					Eliminations
	America			International			& other			Total			America		International			& other			Total
Reservoir Characterization	$	222		$	1,197		$	137		$	1,556		$	242	$	1,317		$	114		$	1,673
Drilling		564			1,513			49			2,126			601		1,760			68			2,429
Production		1,500			1,458			1			2,959			1,725		1,527			-			3,252
Cameron		550			736			24			1,310			617		656			25			1,298
Other		(1	)		(21	)		(100	)		(122	)		4		(45	)		(107	)		(148	)
	$	2,835		$	4,883		$	111		$	7,829		$	3,189	$	5,215		$	100		$	8,504


	First Quarter 2017												Nine Months 2018
	North						Eliminations						North					Eliminations
	America			International			& other			Total			America		International			& other			Total
Reservoir Characterization	$	231		$	1,267		$	120		$	1,618		$	733	$	3,747		$	385		$	4,865
Drilling		455			1,468			62			1,985			1,733		4,884			172			6,789
Production		739			1,451			(3	)		2,187			4,919		4,545			4			9,468
Cameron		444			792			(7	)		1,229			1,761		2,070			71			3,902
Other		2			(56	)		(71	)		(125	)		18		(84	)		(322	)		(388	)
	$	1,871		$	4,922		$	101		$	6,894		$	9,164	$	15,162		$	310		$	24,636

Net pension cost for the Schlumberger pension plans included the following components:

(Stated in millions)	(Stated in millions)												(Stated in millions)

	First Quarter												Third Quarter												Nine Months
	2018						2017						2018						2017						2018						2017
	US			Int'l			US			Int'l			US			Int'l			US			Int'l			US			Int'l			US			Int'l
Service cost	$	16		$	32		$	15		$	29		$	14		$	35		$	14		$	24		$	44		$	105		$	44		$	71
Interest cost		43			77			44			78			41			77			44			76			125			229			131			230
Expected return on plan assets		(62	)		(147	)		(60	)		(136	)		(61	)		(149	)		(60	)		(135	)		(186	)		(442	)		(181	)		(406	)
Amortization of prior service cost		3			3			3			24			3			3			3			24			9			8			9			73
Amortization of net loss		12			44			10			33			12			35			10			30			36			105			29			90
	$	12		$	9		$	12		$	28		$	9		$	1		$	11		$	19		$	28		$	5		$	32		$	58

The net periodic benefit credit for the Schlumberger US postretirement medical plan included the following components:

(Stated in millions)	(Stated in millions)						(Stated in millions)

	First Quarter						Third Quarter						Nine Months
	2018			2017			2018			2017			2018			2017
Service cost	$	8		$	8		$	8		$	7		$	24		$	22
Interest cost		11			11			11			12			33			35
Expected return on plan assets		(15	)		(15	)		(15	)		(16	)		(47	)		(46	)
Amortization of prior service credit		(7	)		(7	)		(7	)		(7	)		(21	)		(22	)
	$	(3	)	$	(3	)	$	(3	)	$	(4	)	$	(11	)	$	(11	)

Accumulated ~~other comprehensive loss~~Other Comprehensive Loss consists of the following:

	(Stated in millions)														(Stated in millions)

									Pension and															Pension and
	Currency								Other						Currency									Other
	Translation			Marketable		Cash Flow			Postretirement						Translation			Marketable			Cash Flow			Postretirement
	Adjustments			Securities		Hedges			Benefit Plans			Total			Adjustments			Securities			Hedges			Benefit Plans			Total
Balance, January 1, 2018	$	(2,139	)	$	13	$	3		$	(2,151	)	$	(4,274	)	$	(2,139	)	$	13		$	3		$	(2,151	)	$	(4,274	)
Other comprehensive gain before reclassifications		39			19		5			-			63
Other comprehensive loss before reclassifications																(128	)		(33	)		(6	)		-			(167	)
Amounts reclassified from accumulated other comprehensive loss		-			-		(3	)		55			52			-			-			(2	)		130			128
Net other comprehensive income		39			19		2			55			115			(128	)		(33	)		(8	)		130			(39	)
Balance, March 31, 2018	$	(2,100	)	$	32	$	5		$	(2,096	)	$	(4,159	)
Balance, September 30, 2018															$	(2,267	)	$	(20	)	$	(5	)	$	(2,021	)	$	(4,313	)


										Pension and															Pension and
	Currency									Other						Currency									Other
	Translation			Marketable			Cash Flow			Postretirement						Translation			Marketable			Cash Flow			Postretirement
	Adjustments			Securities			Hedges			Benefit Plans			Total			Adjustments			Securities			Hedges			Benefit Plans			Total
Balance, January 1, 2017	$	(2,136	)	$	21		$	(19	)	$	(2,509	)	$	(4,643	)	$	(2,136	)	$	21		$	(19	)	$	(2,509	)	$	(4,643	)
Other comprehensive gain (loss) before reclassifications		45			(4	)		11			-			52			49			(66	)		19			-			2
Amounts reclassified from accumulated other comprehensive loss		-			-			-			63			63			-			-			4			179			183
Income taxes		-			-			-			(1	)		(1	)											(2	)		(2	)
Net other comprehensive income		45			(4	)		11			62			114			49			(66	)		23			177			183
Balance, March 31, 2017	$	(2,091	)	$	17		$	(8	)	$	(2,447	)	$	(4,529	)
Balance, September 30, 2017																$	(2,087	)	$	(45	)	$	4		$	(2,332	)	$	(4,460	)

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations.

				(Stated in millions)												(Stated in millions)

	First Quarter 2018						First Quarter 2017						Third Quarter 2018						Third Quarter 2017
				Income						Income						Income						Income
				Before						Before						Before						Before
	Revenue			Taxes			Revenue			Taxes			Revenue			Taxes			Revenue			Taxes
Reservoir Characterization	$	1,556		$	307		$	1,618		$	281		$	1,673		$	373		$	1,771		$	311
Drilling		2,126			293			1,985			229			2,429			339			2,120			301
Production		2,959			216			2,187			110			3,252			320			2,876			283
Cameron		1,310			166			1,229			162			1,298			148			1,297			194
Eliminations & other		(122	)		(8	)		(125	)		(25	)		(148	)		(28	)		(159	)		(30	)
Pretax operating income					974						757						1,152						1,059
Corporate & other ⁽¹⁾					(225	)					(239	)					(234	)					(234	)
Interest income ⁽²⁾					25						24						8						30
Interest expense ⁽³⁾					(131	)					(126	)					(139	)					(129	)
Charges and credits⁽⁴⁾					-						(82	)					-						(49	)
	$	7,829		$	643		$	6,894		$	334		$	8,504		$	787		$	7,905		$	677

⁽¹⁾Comprised principally of certain corporate expenses not allocated to the segments, stock-based compensation costs, amortization expense associated with certain intangible assets, certain centrally managed initiatives and other nonoperating items.

⁽²⁾Interest income excludes amounts which are included in the segments’ income ($2 million in 2018; $4 million in 2017).

⁽³⁾Interest expense excludes amounts which are included in the segments’ income ($8 million in 2018; $13 million in 2017).

⁽⁴⁾Charges and credits are described in detail in Note 2 to the Consolidated Financial Statements.

The oil market continued to tighten in the third quarter as seen by a further draw in global oil inventories and a significant increase in oil prices despite continued strong production from the US and increasing output from key OPEC countries. Global spare capacity is now less than 2%. The tightening supply and demand balance is driven by accelerating decline rates in the international production base and is further exacerbated by the ongoing reduction in Venezuelan and Iranian exports. Geopolitical events and their impact on supply are also becoming an increasing oil market consideration as the challenging security situation in several key countries could affect activity and production going forward. And while the current Permian takeaway constraints in North America should be addressed within the next 12 to 18 months, a series of reservoir- and production-related challenges is emerging in the US shale basins that could dampen the most optimistic production growth projections.

With the outlook for global economic growth and oil demand remaining solid, Schlumberger continues to see a need for a multiyear increase in international E&P investment. Through the work Schlumberger has done over the past four years to expand its external offering and modernize its internal execution platform, it is well-positioned to outgrow the market in the expected upcycle.

Third-quarter 2018 revenue of $8.5 billion increased 8% year-on-year. The global rig count increased 4% as compared to the same period last year, North America land rig count increased by 10% and international rig count was essentially flat. North America revenue increased 23% largely driven by the deployment of additional hydraulic fracturing equipment and market share gains as compared to the prior year. International revenue improved by 1%.

Third-quarter 2018 revenue of $1.7 billion decreased 6% year-on-year primarily due to reduced OneSurface revenue in the Middle East following the end of the first phase of an integrated production system project and reduced WesternGeco activity as marine seismic acquisition contracts continue to wind down.

Year-on-year, pretax operating margin increased 470 basis points (“bps”) to 22% primarily as a result of reduced depreciation and amortization following the WesternGeco impairment charges in the fourth quarter of 2017.

Third-quarter 2018 revenue of $2.4 billion increased 15% year-on-year primarily due to higher demand for directional drilling technologies on land in North America and the start of new integrated drilling projects internationally. This benefited all the product lines, led by M-I SWACO, Integrated Drilling Services, and Drilling & Measurements.

Year-on-year, pretax operating margin declined slightly by 22 bps to 14% due primarily to mobilization and project start-up costs associated with the new integrated drilling projects.

Third-quarter 2018 revenue of $3.3 billion increased 13% year-on-year with the majority of the revenue growth driven by accelerated land activity growth in North America that benefited the OneStim pressure pumping businesses. Growth was driven primarily by the deployment of hydraulic fracturing capacity and market share gains as compared to the prior year. However, service revenue from the OneStim hydraulic fracturing business was increasingly impacted by softening activity and pricing over the course of the third quarter of 2018. The dynamics of the pressure pumping market changed during the quarter and activity will likely continue to decline until the Permian takeaway capacity constraints are resolved.

Third-quarter 2018 revenue of $1.3 billion was flat year-on-year as higher revenue on land in North America benefiting the short-cycle businesses of Surface Systems and Valves & Measurement was offset by the decline of the long-cycle businesses of OneSubsea.

Year-on-year, pretax operating margin decreased 349 bps to 11%, driven primarily by the decline in high-margin OneSubsea project volumes.

				(Stated in millions)

	Nine Months 2018						Nine Months 2017
				Income						Income
				Before						before
	Revenue			Taxes			Revenue			Taxes
Reservoir Characterization	$	4,865		$	1,030		$	5,148		$	891
Drilling		6,789			921			6,212			832
Production		9,468			851			7,559			614
Cameron		3,902			481			3,791			530
Eliminations & other		(388	)		(63	)		(449	)		(101	)
Pretax operating income					3,220						2,766
Corporate & other ⁽¹⁾					(699	)					(715	)
Interest income ⁽²⁾					44						82
Interest expense ⁽³⁾					(405	)					(383	)
Charges and credits ⁽⁴⁾					(184	)					(723	)
	$	24,636		$	1,976		$	22,261		$	1,027

⁽²⁾ Interest income excludes amounts which are included in the segments’ income ($37 million in 2018; $5$15 million in 2017).

⁽³⁾ Interest expense excludes amounts which are included in the segments’ income ($1229 million in 2018; ~~$13~~$39 million in 2017).

⁽⁴⁾ Charges and credits are described in detail in Note 2 to the Consolidated Financial Statements.

Nine-month 2018 revenue of ~~$7.8~~$24.6 billion increased ~~14% year-on-year as the~~11% year-on-year. The global rig count increased by6% as the ~~same percentage. The~~ North ~~America~~American land rig count increased ~~by 21% year-on-year, while~~11% and the international rig count was up 8%. Production Group revenue increased 35% while Drilling Group revenue increased by 7%, both driven by strong land activity in North America. Cameron Group revenue increased by 7%, while Reservoir Characterization Group revenue declined 4%.

~~First-quarter 2018 pretax operating margin increased 145 basis points (“bps”) year-on-year to 12%, as a result of improved profitability~~flat versus the same period last year. Revenue in North America ~~due to~~grew 37% driven by the ~~land activity growth that benefited the Production~~deployment of additional hydraulic fracturing capacity, market share gains, operational efficiency improvements and Drilling Groups. As a result, Production Group pretax operating margin expanded 227 bps to 7% and the Drilling Group increased 222 bps to 14%. Reservoir Characterization Group pretax operating margin increased 240 bps to 20% while the Cameron Groupimproved pricing. International revenue was essentially ~~flat at 13%.~~flat.

~~First-quarter~~Nine-month 2018 revenue of ~~$1.6~~$4.9 billion decreased 4%5% year-on-year primarily due to ~~lower~~reduced OneSurface revenue ~~on a long-term surface facility~~following the end of the first phase of an integrated production system project in the Middle ~~East.~~East and reduced WesternGeco activity as marine seismic acquisition contracts continue to wind down.

Year-on-year, pretax operating margin increased ~~240~~386 bps to ~~20% due to improved profitability for WesternGeco~~21% primarily as a result of ~~a favorable mix of multiclient seismic license sales as well as~~ reduced depreciation and amortization following the ~~multiclient~~WesternGeco impairment ~~charge~~charges recorded ~~during~~in the fourth quarter of 2017.

~~First-quarter~~ Nine-month 2018 revenue of ~~$2.1~~$6.8 billion increased 7%9% year-on-year primarily due to higher demand for directional drilling technologies on land in ~~both~~ North America and ~~Russia.~~

the start of new integrated drilling projects internationally. This benefited Drilling & Measurements, Bits & Drilling tools, M-I SWACO and Integrated Drilling Services.

Year-on-year, pretax operating margin ~~increased 222 bps to~~was essentially flat at 14% ~~primarily due to improved profitability in North America due to the increased land activity and improved pricing.~~.

~~First-quarter~~ Nine-month 2018 revenue of ~~$3.0~~$9.5 billion increased ~~35%~~25% year-on-year ~~primarily due~~with most of the revenue increase attributable to the ~~significant~~accelerated land activity growth in North America that benefited the OneStim pressure pumping businesses in North America land. Growth was driven by the deployment of additional hydraulic fracturing ~~business.~~capacity, market share gains, operational efficiency improvements, and improved pricing.

Year-on-year, pretax operating margin increased ~~227~~87 bps to 7%9% as a result of improved profitability in North America due to ~~the growth~~accelerated land activity and improved pricing.

Nine-month 2018 revenue of $3.9 billion increased 3% year-on-year due to higher revenue in North America land ~~activity combined with improved pricing.~~

During the first quarter of 2018, the US land pressure pumping business was impacted by weaker-than-expected activity as well as softer pricing as compared to the fourth quarter of 2017, rising supply chain costs, and rail logistical challenges. In spite of these factors, Schlumberger continued to deploy available fracturing assets, including equipment from our newly acquired capacity. Schlumberger expects the US land hydraulic fracturing market to improve during the second quarter of 2018, both in terms of pricing and in operational efficiency and it is, therefore continuing with its aggressive fleet reactivation and recommissioning program.

~~First-quarter 2018 revenue of $1.3 billion increased 7% year-on-year due to improvements on land in North America that benefited~~benefiting the short-cycle businesses of Surface Systems and Valves & ~~Measurement~~Measurement. This was largely offset by the decline of the long-cycle businesses of Drilling Systems and ~~Surface Systems.~~ OneSubsea.

~~Pretax~~Year-on-year, pretax operating margin of ~~13% was essentially flat year-on-year.~~12% declined 166 bps due primarily to the decline in high-margin OneSubsea project volumes.

(Stated in millions)	(Stated in millions)				(Stated in millions)

	First Quarter				Third Quarter				Nine Months
	2018		2017		2018		2017		2018		2017
Equity in net earnings of affiliated companies	$	14	$	17	$	26	$	30	$	67	$	75
Interest income		28		29		10		34		51		97
	$	42	$	46	$	36	$	64	$	118	$	172

Research & engineering and General & administrative expenses, as a percentage of Revenue, for the ~~first~~third quarter ~~of both~~and nine months ended September 30, 2018 and 2017 were as follows:

	First Quarter						Third Quarter						Nine Months
	2018			2017			2018			2017			2018			2017
Research & engineering		2.2	%		3.1	%		2.1	%		2.4	%		2.1	%		2.7	%
General & administrative		1.4	%		1.4	%		1.2	%		1.5	%		1.3	%		1.5	%

Research & engineering and General & administrativecosts for the third quarter of 2018 and the first ~~quarter~~nine months of 2018 have decreased as a percentage of revenue compared to the same ~~period~~periods in 2017 as a result of cost control measures.

The effective tax rate for the third quarter of 2018 declined year-on-year to 16.4% from 17.9%, driven primarily by the decrease in the US statutory tax rate as a result of tax reform.

The effective tax rate for the first ~~quarter~~nine months of 2018 was 17.6% and 26.2% for the same period in 2017. The charges described in Note 2 to the Consolidated Financial Statements increased the effective tax rate for the first nine months of 2018 by 60 bps and eight percentage points for the same period of 2017, as the majority of these charges were not tax-effective. Excluding these charges, the effective tax rate for the first nine months of 2018 was 17.0% as compared to ~~14.8%~~17.8% for the same period of 2017. The effective tax rate increased as a result of the change in the geographic mix of earnings, as Schlumberger generated a greater portion of its pretax earnings in North America during the first quarter of 2018 as compared to the same period last year.

There were no charges or credits recorded during the first ~~quarter~~and third quarters of 2018.

~~In connection with Schlumberger’s acquisition~~During the second quarter of ~~Cameron,~~2018, Schlumberger recorded ~~$82~~a $184 million ~~of charges relating~~pretax charge ($164 million after-tax) associated with headcount reductions, primarily to ~~employee benefits, facility closures and other merger and integration-related costs. These charges are~~further streamline its support cost structure. This charge is classified in ~~Merger~~Impairments & ~~integration~~other in the Consolidated Statement of Income.

Schlumberger recorded charges during the first, second and third quarters of 2017, which are fully described in Note 2 to the Consolidated Financial Statements. The following is a summary of the charges recorded during the first nine months of 2017:

	(Stated in millions)									(Stated in millions)

	Mar. 31,			Mar. 31,			Dec. 31,			Sept. 30,			Sept. 30,			Dec. 31,
Components of Liquidity	2018			2017			2017			2018			2017			2017
Cash	$	1,865		$	1,902		$	1,799		$	1,493		$	1,690		$	1,799
Short-term investments		2,300			5,451			3,290			1,361			3,262			3,290
Fixed income investments, held to maturity		-			238			-
Short-term borrowings and current portion of long-term debt		(4,586	)		(2,449	)		(3,324	)		(3,215	)		(1,289	)		(3,324	)
Long-term debt		(13,526	)		(16,538	)		(14,875	)		(14,159	)		(15,871	)		(14,875	)
Net debt ⁽¹⁾	$	(13,947	)	$	(11,396	)	$	(13,110	)	$	(14,520	)	$	(12,208	)	$	(13,110	)

Changes in Liquidity:
Three Months Ended Mar. 31,

2018

2017

Net income
$
530

$
284

Impairment and other charges

-

68

Depreciation and amortization ⁽²⁾

874

989

Earnings of equity method investments, less dividends received

(5
)

(10
)
Pension and other postretirement benefits expense

18

37

Stock-based compensation expense

90

88

Pension and other postretirement benefits funding

(39
)

(29
)
Increase in working capital ⁽³⁾

(836
)

(791
)
Other

(64
)

20

Cash flow from operations

568

656

Capital expenditures

(454
)

(381
)
SPM investments

(240
)

(144
)
Multiclient seismic data costs capitalized

(26
)

(116
)
Free cash flow ⁽⁴⁾

(152
)

15

Dividends paid

(692
)

(696
)
Proceeds from employee stock plans

127

135

Stock repurchase program

(97
)

(372
)

(814
)

(918
)
Business acquisitions and investments, net of cash acquired plus debt assumed

(13
)

(273
)
Other

(10
)

(84
)
Increase in net debt

(837
)

(1,275
)
Net debt, beginning of period

(13,110
)

(10,121
)
Net debt, end of period
$
(13,947
)

$
(11,396
)

Changes in Liquidity:	Nine Months Ended Sept. 30,
	2018			2017
Net income	$	1,628		$	758
Impairment and other charges		184			723
Depreciation and amortization ⁽²⁾		2,637			2,931
Earnings of equity method investments, less dividends received		(41	)		(52	)
Stock-based compensation expense		259			261
Pension and other postretirement benefits funding		(69	)		(107	)
Increase in working capital ⁽³⁾		(1,147	)		(1,473	)
US federal tax refund		-			685
Other		(69	)		(314	)
Cash flow from operations		3,382			3,412
Capital expenditures		(1,539	)		(1,482	)
SPM investments		(719	)		(492	)
Multiclient seismic data costs capitalized		(63	)		(223	)
Free cash flow ⁽⁴⁾		1,061			1,215
Dividends paid		(2,077	)		(2,086	)
Proceeds from employee stock plans		256			261
Stock repurchase program		(300	)		(868	)
		(1,060	)		(1,478	)
Business acquisitions and investments, net of cash acquired plus debt assumed		(290	)		(382	)
Other		(60	)		(227	)
Increase in net debt		(1,410	)		(2,087	)
Net debt, beginning of period		(13,110	)		(10,121	)
Net debt, end of period	$	(14,520	)	$	(12,208	)

Key liquidity events during the ~~first three~~nine months of 2018 and 2017 included:

The following table summarizes the activity under these share repurchase programs:

Schlumberger operates in more than 85 countries. As of ~~December 31, 2017,~~September 30, 2018, only ~~five~~three of those countries individually accounted for greater than 5% of Schlumberger’s net receivables balance, of which only ~~one (the~~the United ~~States)~~States accounted for greater than 10% of such receivables.

As of ~~March 31,~~September 30, 2018, Schlumberger had ~~$4.2~~$2.9 billion of cash and short-term investments on hand. Schlumberger had separate committed debt facility agreements aggregating $6.5 billion that support commercial paper programs, of which ~~$3.5~~$3.4 billion was available and unused. Schlumberger believes these amounts are sufficient to meet future business requirements for at least the next 12 months.

Borrowings under the commercial paper programs at ~~March 31,~~September 30, 2018 were ~~$3.0~~$3.1 billion.

This ~~first-quarter~~third-quarter 2018 Form 10-Q, as well as other statements we make, contain “forward-looking statements” within the meaning of the federal securities laws, which include any statements that are not historical facts, such as our forecasts or expectations regarding business outlook; growth for Schlumberger as a whole and for each of its segments (and for specified products or geographic areas within each segment); oil and natural gas demand and production growth; oil and natural gas prices; improvements in operating procedures and technology, including our transformation program; capital expenditures by Schlumberger and the oil and gas industry; the business strategies of Schlumberger’s customers; the effects of US tax reform; our effective tax rate; ~~the success of~~ Schlumberger’s SPM projects, joint ventures and alliances; future global economic conditions; and future results of operations. These statements are subject to risks and uncertainties, including, but not limited to, global economic conditions; changes in exploration and production spending by Schlumberger’s customers and changes in the level of oil and natural gas exploration and development; general economic, political and business conditions in key regions of the world; foreign currency risk; pricing pressure; weather and seasonal factors; operational modifications, delays or cancellations; production declines; changes in government regulations and regulatory requirements, including those related to offshore oil and gas exploration, radioactive sources, explosives, chemicals, hydraulic fracturing services and climate-related initiatives; the inability of technology to meet new challenges in exploration; ~~the inability to retain key employees;~~ and other risks and uncertainties detailed in this ~~first-quarter~~third-quarter 2018 Form 10-Q and our most recent Forms 10-K, 10-Q, and 8-K filed with or furnished to the Securities and Exchange Commission. If one or more of these or other risks or uncertainties materialize (or the consequences of any such development changes), or should our underlying assumptions prove incorrect, actual outcomes may vary materially from those reflected in our forward-looking statements. Schlumberger disclaims any intention or obligation to update publicly or revise such statements, whether as a result of new information, future events or otherwise.

For quantitative and qualitative disclosures about market risk affecting Schlumberger, see Item 7A, “Quantitative and Qualitative Disclosures about Market Risk,” of the Schlumberger Annual Report on Form 10-K for the fiscal year ended December 31, 2017. Schlumberger’s exposure to market risk has not changed materially since December 31, 2017.

Schlumberger has carried out an evaluation under the supervision and with the participation of Schlumberger’s management, including the Chief Executive Officer (“CEO”) and the Chief Financial Officer (“CFO”), of the effectiveness of Schlumberger’s “disclosure controls and procedures” (as such term is defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934 (the “Exchange Act”)) as of the end of the period covered by this report. Based on this evaluation, the CEO and the CFO have concluded that, as of the end of the period covered by this report, Schlumberger’s disclosure controls and procedures were effective to provide reasonable assurance that information required to be disclosed in the reports that Schlumberger files or submits under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission’s rules and forms. Schlumberger’s disclosure controls and procedures include controls and procedures designed to ensure that information required to be disclosed in reports filed or submitted under the Exchange Act is accumulated and communicated to its management, including the CEO and the CFO, as appropriate, to allow timely decisions regarding required disclosure. There was no change in Schlumberger’s internal control over financial reporting during the quarter to which this report relates that has materially affected, or is reasonably likely to materially affect, Schlumberger’s internal control over financial reporting.

The information with respect to this Item 1 is set forth under Note 10—Contingencies, in the Consolidated Financial Statements.

As of the date of this filing, there have been no material changes from the risk factors disclosed in Part 1, Item 1A, of Schlumberger’s Annual Report on Form 10-K for the fiscal year ended December 31, 2017.

As of ~~March 31,~~September 30, 2018, Schlumberger had repurchased ~~$421~~$623 million of Schlumberger common stock under its $10 billion share repurchase program.

Schlumberger’s common stock repurchase activity for the three months ended ~~March 31,~~September 30, 2018 was as follows:

(Stated in thousands, except per share amounts)

Total number of shares purchased

Average price paid per share

Total number of shares purchased as part of publicly announced programs

Maximum value of shares that may yet be purchased under the programs

January 2018

448.5

$
74.88

448.5

$
9,642,781

February 2018

441.6

$
68.63

441.6

$
9,612,478

March 2018

506.9

$
66.30

506.9

$
9,578,866

1,397.0

$
69.79

1,397.0

	(Stated in thousands, except per share amounts)

	Total number of shares purchased		Average price paid per share		Total number of shares purchased as part of publicly announced programs		Maximum value of shares that may yet be purchased under the programs
July 2018		659.8	$	67.02		659.8	$	9,432,247
August 2018		474.5	$	65.17		474.5	$	9,401,324
September 2018		401.8	$	61.40		401.8	$	9,376,651
		1,536.1	$	64.98		1,536.1

Our mining operations are subject to regulation by the federal Mine Safety and Health Administration under the Federal Mine Safety and Health Act of 1977. Information concerning mine safety violations or other regulatory matters required by section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act and Item 104 of Regulation S-K is included in Exhibit 95 to this report.

In 2013, Schlumberger completed the wind-down of its service operations in Iran. Prior to this, certain non-US subsidiaries provided oilfield services to the National Iranian Oil Company and certain of its affiliates (“NIOC”).

Schlumberger’s residual transactions or dealings with the government of Iran during the ~~first~~third quarter of 2018 consisted of payments of taxes and other typical governmental charges. Certain non-US subsidiaries of Schlumberger maintain depository accounts at the Dubai branch of Bank Saderat Iran (“Saderat”), and at Bank Tejarat (“Tejarat”) in Tehran and in Kish for the deposit by NIOC of amounts owed to non-US subsidiaries of Schlumberger for prior services rendered in Iran and for the maintenance of such amounts

previously received. One non-US subsidiary also maintains an account at Tejarat for payment of local expenses such as taxes. Schlumberger anticipates that it will discontinue dealings with Saderat and Tejarat following the receipt of all amounts owed to Schlumberger for prior services rendered in Iran.

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized and in his capacity as Chief Accounting Officer.

CURAÇAO		52-0684746
(State or other jurisdiction of incorporation or organization)		(I.R.S. Employer Identification No.)

42 RUE SAINT-DOMINIQUE
PARIS, FRANCE		75007

5599 SAN FELIPE
HOUSTON, TEXAS, U.S.A.		77056

62 BUCKINGHAM GATE
LONDON, UNITED KINGDOM		SW1E 6AJ

PARKSTRAAT 83 THE HAGUE,
THE NETHERLANDS		2514 JG
(Addresses of principal executive offices)		(Zip Codes)

Large accelerated filer	☒	Accelerated filer	☐
Non-accelerated filer	☐ ~~(Do not check if a smaller reporting company)~~	Smaller reporting company	☐
Emerging growth company	☐

Class	Outstanding at ~~March 31,~~September 30, 2018
COMMON STOCK, $0.01 PAR VALUE PER SHARE	~~1,385,133,215~~1,384,801,810

		Page
PART I	Financial Information

Item 1.	Financial Statements	3

Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	1618

Item 3.	Quantitative and Qualitative Disclosures about Market Risk	1923

Item 4.	Controls and Procedures	2023

PART II	Other Information

Item 1.	Legal Proceedings	2024

Item 1A.	Risk Factors	2024

Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	2024

Item 3.	Defaults Upon Senior Securities	2024

Item 4.	Mine Safety Disclosures	2124

Item 5.	Other Information	2124

Item 6.	Exhibits	2226

	~~Certifications~~

		Schlumberger Limited (Registrant)
Date:	~~April 25,~~October 24, 2018	/s/ Howard Guild
		Howard Guild
		Chief Accounting Officer and Duly Authorized Signatory

	(Stated in millions)

					Noncontrolling
	Pretax		Tax		Interests		Net
Promissory note fair value adjustment and other	$	510	$	-	$	12	$	498
Merger & integration		213		44		-		169
	$	723	$	44	$	12	$	667

Changes in Liquidity:	Three Months Ended Mar. 31,
	2018			2017
Net income	$	530		$	284
Impairment and other charges		-			68
Depreciation and amortization ⁽²⁾		874			989
Earnings of equity method investments, less dividends received		(5	)		(10	)
Pension and other postretirement benefits expense		18			37
Stock-based compensation expense		90			88
Pension and other postretirement benefits funding		(39	)		(29	)
Increase in working capital ⁽³⁾		(836	)		(791	)
Other		(64	)		20
Cash flow from operations		568			656
Capital expenditures		(454	)		(381	)
SPM investments		(240	)		(144	)
Multiclient seismic data costs capitalized		(26	)		(116	)
Free cash flow ⁽⁴⁾		(152	)		15
Dividends paid		(692	)		(696	)
Proceeds from employee stock plans		127			135
Stock repurchase program		(97	)		(372	)
		(814	)		(918	)
Business acquisitions and investments, net of cash acquired plus debt assumed		(13	)		(273	)
Other		(10	)		(84	)
Increase in net debt		(837	)		(1,275	)
Net debt, beginning of period		(13,110	)		(10,121	)
Net debt, end of period	$	(13,947	)	$	(11,396	)

(Stated in millions, except per share amounts)

	Total cost		Total number		Average price
	of shares		of shares		paid per
	purchased		purchased		share
Three months ended March 31, 2018	$	97		1.4	$	69.79
Three months ended March 31, 2017	$	372		4.7	$	78.97