Buda Limestone Nears Exhaustion as Eagle Ford Shifts to Gas-Led Growth
Texas' oldest producing formation is running dry, forcing the Eagle Ford's economics to lean harder on gas just as Permian drillers face negative prices.
The Buda Limestone formation beneath the Eagle Ford shale has produced since around 1930, but the remaining technically recoverable resources now stand at just 184 billion cubic feet of gas and 12 million barrels of oil, according to Mercer Capital analysis cited by OilPrice.com. That compares with cumulative output of 204 million barrels of oil and 287 billion cubic feet of gas over nearly a century of production.5
The numbers put the Buda's remaining oil at roughly 6% of what it has already pumped, a rounding error in a state that produced over 2 billion barrels last year. The formation is not going to disappear overnight, but it is no longer a growth story, and its decline is now baked into how operators talk about the Eagle Ford's future.5
That matters for the broader Texas supply picture because the Eagle Ford has been a model of stability. Crude output has held at about 1.1 million barrels per day, while total production on a barrels of oil equivalent basis rose 2.2% in the twelve months ending March 2026 compared with the prior year, Mercer Capital said. Output has ranged narrowly between 2.36 and 2.46 million boepd over that window.5
The stability is increasingly a gas story. The Dorado gas play, led by EOG Resources, is expected to reach 1 billion cubic feet per day in 2026, up 33% year on year, with low breakevens and premium access to Gulf Coast markets. That access is the key differentiator: Eagle Ford gas can reach LNG export terminals and industrial buyers along the Texas coast without the pipeline bottlenecks that plague the Permian.5
The contrast with West Texas is stark. Permian Basin drillers are still enjoying oil prices roughly 50% higher than before the Iran war, yet chronic gas pipeline shortages have pushed regional prices to subzero levels. Targa Resources president Jennifer Kneale said on a recent earnings call that between 200 and 400 million cubic feet per day of Permian gas is being shut in on any given day.3
Eagle Ford operators are not facing that problem, and the market has noticed. Stone Ridge recently paid Baytex Energy $2.3 billion for Eagle Ford assets, a deal that Energy Advisors described as evidence the play is "evolving into a hybrid play—combining stable oil production with advantaged gas growth and continued M&A activity."5
But the hybrid label cuts both ways. With the Buda effectively spent, the Eagle Ford's oil output becomes more dependent on shale drilling economics that have never been the play's strongest suit. The formation's 2.2% boe growth rate trails the Permian's pace, and the rig count data suggests operators are not rushing to change that. Baker Hughes reported the total US rig count at 558 in the week of May 18, down 8 from a year earlier, with oil rigs rising by 10 to 425.2,5
The macro backdrop is not making the call easier. OPEC's June monthly report cut its 2026 demand growth forecast for the second straight month, now expecting consumption to grow by only 970,000 b/d, down 200,000 b/d from a month earlier. Chinese refiners have nominated a record-low 12 million barrels of Saudi crude for July loading, or about 387,000 b/d, as Aramco's formula prices discouraged buying.4
US production continues to set the ceiling. Crude output averaged 13.702 million bpd in the latest reporting period, just 160,000 bpd below the all-time high, according to Baker Hughes data cited by OilPrice. The United States remained the world's largest producer in 2025, extending a streak that began in 2018.6,2
WTI crude front-month traded at $74.78/bbl and Brent at $79.13/bbl as of Thursday morning (2026-08-06), well below the $97-$104 range seen in June when the war premium was inflating prices. The pullback has not yet triggered a drilling slowdown, but the Eagle Ford's economics are more exposed than the Permian's if crude keeps sliding.1,2
The Buda's exhaustion is a slow-moving event, not a shock. But it concentrates the Eagle Ford's future on gas at a moment when Henry Hub front-month sits at $2.67/MMBtu, down from the levels that justified aggressive drilling earlier in the decade. The play's prized Gulf Coast access keeps it ahead of the Permian on gas, yet the next twelve months will test whether gas-led growth can compensate as the oldest layer of Texas oil production fades out.5