Thanks, Dwayne. And good morning to everyone.
As we mentioned in this morning's earnings release, the first quarter of 2021 demonstrated our market-leading businesses were impact-resilient and our financial results were consistent with, if not slightly ahead of our internal expectations.
As we look forward, we remain increasingly confident that improving macroeconomic conditions provide us significant operating leverage to the upside. In combination with our de minimis capital requirements outside of our Granger soda ash expansion project, we believe we are poised to deliver significant value in future periods to all of our stakeholders.
Our actions taken in early April to extend our senior secured credit facility coupled with the tack-on offering to our senior unsecured notes due 2027 have positioned Genesis with no maturities of long-term debt until 2024 while providing ample liquidity and flexibility to deal with the trailing impacts of COVID-19 and the 2020 hurricane season.
While we continue to expect 2021 to be a year of transition, the partnership is well-positioned for long-term success with a recovery in our soda ash business, significant additional free cash flow coming from our two contracted projects in the Gulf of Mexico, and first production from our fully expanded Granger soda ash facility in the back half of 2023.
Now turning to our individual business segments.
Our Offshore Pipeline Transportation segment performed in line with our expectations and achieved a more normalized earnings run rate during the first quarter.
As we look forward, the second quarter is typically a heavy maintenance quarter for our producer customers in the Gulf of Mexico, and we would expect a certain level of planned downtime associated with these activities. Even with this expected downtime, we still anticipate to achieve quarterly Segment Margin in the second quarter of around $80 million.
Our two large contracted offshore projects Argos and King's Quay continue to remain on track for first oil in the first half of 2022. BP and Murphy have both publicly reaffirmed their prospective project schedules for the first and second quarters of 2022, respectively.
We continue to anticipate that these two fields when fully ramped will generate in excess of $25 million a quarter or over $100 million a year in additional Segment Margin and free cash flow net to Genesis. We remain in discussions with three separate new standalone deepwater production hubs in various stages of sanctioning with anticipated first oils starting in the late-2024, 2025 timeframe, assuming they are sanctioned by the end of this year or early next year. We understand from our discussions with the producer community that drilling and development activity on our existing and valid leases in the Gulf of Mexico is continuing pretty much the same as it always has. The recent announcement of BP's Puma West prospect is yet another example of producers building around and leveraging their existing footprints and expertise in the Gulf of Mexico. Along with Equinor's Monument discovery and Beacon's Winterfell discovery, the opportunity set of future new developments, all of which more likely than not will need to access our existing infrastructure over the decades to come continues to grow.
We continue to believe that a large percentage of the economic acreage in the Gulf of Mexico, which can be developed under current drilling technology has already been leased. This inventory of existing and valid leases should provide decades worth of drilling, development, and production opportunities regardless of when the statutorily mandated leasing programs in the Gulf resume. To further elaborate on my comments from last quarter, crude oil from the deepwater Gulf of Mexico remains some of the lowest carbon intensity barrels produced and refined in North America, if not in the world. Several large producers including supervisors such as BP and Chevron have recently indicated the Gulf of Mexico is core to their future carbon-neutral initiatives. And the cash flow from these low carbon barrels will help fund and fuel their growing renewables initiatives to help them meet their emissions targets or net-zero goals. Recently BP's CEO, Bernard Looney said, and I quote "Hydrocarbon projects like Mad Dog 2 are crucially important in our new strategy. The cash flow these developments provide will drive our company's transformation." These types of comments and the continued activity in and around our footprint further drive our confidence, that the Gulf of Mexico will remain one of the leading North American basins for years and years to come.
Now turning to Sodium Minerals and Sulfur Services.
Our soda ash business continues to recover as demand for soda ash is steadily increase you know as the world's economies reopen and trending towards pre-COVID levels. The global supply and demand dynamic for soda ash continues to tighten. And we believe all-natural producers are sold out globally for 2021. Remember, we don't compete with an alternative product. We compete with synthetically produced soda ash which costs nearly twice as much to produce and has a carbon and other environmental footprint far in excess of naturally produced soda ash. Listen, markets work. Low cost and environmentally conscious natural soda ash production will be base loaded to meet the world's demand and the market will swing on synthetic production, which given this cost basis will provide the backdrop for significantly improving prices -- pricing as the world's economies recover from the effects of the pandemic. Within China, against whom we primarily compete in Asia, certain synthetic production has come offline due to environmental restrictions while domestic demand for soda ash continues to increase, ultimately reducing the number of tons available to be exported outside of China. Lower export volumes from China and recent increases in container shipping rates are also driving up costs associated with Chinese synthetic production on a delivered basis to markets in Southeast Asia. In response to this dynamic, ANSAC announced a price increase for soda ash in early March for the second quarter on all of their non-contract sales of soda ash and on contracted sales when contracts allow. We believe this increasingly tight supply and demand dynamic will continue to support prices rising through the remainder of the year, especially towards the end of the year when we would otherwise re-determine most of our contract prices for the majority of our sales for 2022.
In addition to rapidly recovering demand from the resumption of economic activity and longer-term demand growth from existing applications, we remain encouraged with increasing demand for soda ash from a variety of the green initiatives around the world. Lithium producers utilize soda ash in a two-to-one ratio to support their production of lithium carbonate, which is also used to make lithium hydroxide, both of which are building blocks to new generation lithium-ion phosphate batteries that are placed in the exponentially growing electric vehicle and battery storage markets. Lithium batteries are the primary energy source for battery-operated vehicles and based upon your assumption of EV penetration rates in the overall automobile market, we could see a meaningful impact to the demand for soda ash over the coming years.
Soda ash is also a critical component in the glass manufacturing process and subsequently in the manufacturing process of solar panels.
In fact, there are recent reports of up to five new glass float furnaces coming online in China to build more solar panels.
All of which, importantly, will consume higher costs Chinese synthetic soda ash, thus further reducing Chinese synthetic ash volumes available for export. The increasing demand to manufacture additional solar panels in both China and the United States, when combined with the increase in demand from the lithium producers and battery manufacturers should provide our soda ash business with increasing levels of participation and financial benefit from the various green initiatives around the world.
Looking at a couple of years, we also have reason to believe that certain competitors are shelving or otherwise delaying their respective production expansions due to company-specific reasons. This dynamic could suggest our Granger expansion project remains the only material natural production expansion project in the world that will come online by late 2023. Once expanded and optimized, Granger's significantly reduced cost structure will allow its production to compete favorably on the global market to capture just normal demand growth resulting from GDP growth as well as renewables-driven demand or at a minimum displace higher costs synthetic soda ash production.
Our legacy refinery services business performed in line with our expectations.
During the quarter, we saw steady production levels combined with the strong demand from our copper mining customers and improving volumes from our pulp and paper customers. Copper prices remain at near decade-high levels driven by the tremendous demand for copper from the reopening of the world's economies, and the insatiable appetite for renewable and green initiatives around the world.
While copper remains a foundational building block for many mainstream items in our lives, it is a critical component for the energy transition, in particular, wind and solar technology, energy storage, and electric vehicles. To provide some additional color, if you look at the amount of copper in a traditional internal combustion engine, vehicle, it would require roughly 48 pounds of copper, while an electric vehicle requires approximately 3.8 times the amount of copper or up to 180 pounds per vehicle. We believe the demand for copper from the various green initiatives will only continue to increase as we move forward, which should help us provide with steady and possibly increasing demand for our sodium hydrosulfide product in future years, if and when copper mining expansions come online.
As you can surmise, our sodium minerals and sulfur services segment is well-positioned to benefit from various energy transition initiatives. Not only to, directly and indirectly, to contribute to lowering carbon emissions but in fact to profit from the energy transition. We provide the picks and shovels or the mission-critical building blocks to both lithium producers and copper miners today as they continue to produce the raw materials needed to help drive the energy transition and future green initiatives around the world.
As mentioned above, in early April, we successfully refinanced our senior secured credit facility receiving $950 million in total commitments consisting of a new $650 million revolver and a $300 million term loan, all held with a syndication of 13 banks. We proactively reduced the size, extended the tenor to March of 2024, and obtained certain additional flexibility to address any uncertainty of covenant compliance as we deal with the trailing impacts of COVID-19 and the 2020 hurricane season even as our businesses are rapidly recovering. In mid-April, we successfully priced a tack-on offering of additional 8% senior notes due 2027 at a premium of 103.75% and received net proceeds of approximately $256 million. The proceeds from this offering were used for general partnership purposes including repaying a portion of the borrowings under our recently extended revolver to further improve our liquidity position.
As of March 31, pro forma for these transactions, we would have had approximately $150 million outstanding on our $650 million senior secured revolving facility.
While our total adjusted debt was sequentially flat from last quarter, we did liquidate crude oil inventory that had been hedged in the contango market. We sold such barrels for approximately $22 million in March but did not receive the cash proceeds until April or after quarter-end. Had we receive the proceeds in the first quarter, we would have sequentially reduced our total adjusted debt by $22 million during the quarter. I'll switch gears now and touch on our view for the remainder of 2021. We remain on track with our previously announced guidance for full-year adjusted consolidated EBITDA as defined in our senior secured credit agreement coming in a range of between $630 million and $660 million, which includes approximately $30 million to $40 million of pro forma adjustments.
In addition, we continue to expect to generate free cash flow after all cash obligations in the range of $80 million to $110 million in 2021. That being said, given the anticipated cadence of the future spend on our Granger expansion project, we might choose to spend some of this or future period's free cash flow to fund portions over and above the $250 million minimum obligation for us to draw under our asset level preferred funding arrangement. This option does not take away from the fact we will continue to generate increasing amounts of free cash flow and our ability to accelerate our deleveraging plan remains on track, and we are steadfast on our commitment to achieving our long-term target leverage ratio of 4.0 times. I would like to once again recognize our entire workforce and especially our miners, mariners, and offshore personnel who live and work in close quarters during this time of social distancing. I'm extremely proud to say, we have safely operated our assets on our own COVID-19 safety protocols and procedures with no impact to our business partners and customers, with limited confirmed cases amongst our some 2,000 employees and no known workplace transmissions. It is an honor to have the opportunity to work alongside such quality folks. With that, I'll turn it back to the moderator for any questions.