The shale revolution made the United States the world’s largest oil producer.
asserted
States → make → ?
Horizontal drilling and hydraulic fracturing turned once-uneconomic resources into enormous producing basins, pushed U.S. output to record levels, and changed the global oil market.
But that playbook is maturing.
asserted
playbook → turn → market
Shale wells decline quickly, and the highest-quality drilling inventory is finite.
asserted
inventory → decline → ?
Maintaining American production over the coming decades will increasingly require more than drilling another generation of wells.
asserted
Maintaining → maintain → wells
The next American oil boom may depend less on finding new fields than on recovering more from the fields we already drilled.
uncertain
we → depend → fields
A new University of Houston analysis estimates that approximately 137 billion barrels of U.S. oil are technically recoverable using carbon dioxide enhanced oil recovery, or CO2-EOR.
asserted
barrels → estimate → recovery
Texas and the Gulf Coast contain more than half of the nation’s resources considered technically favorable for the process.
asserted
Texas → contain → process
Not all 137 billion barrels will be economically viable to produce.
asserted
barrels → produce → ?
But the number illustrates the scale of what remains beneath existing American fields, where billions have already been invested in wells, roads, pipelines, and processing facilities.
asserted
billions → illustrate → wells
The technology is proven.
asserted
technology → prove → ?
Producers have used CO2-EOR commercially for more than 50 years.
asserted
Producers → use → years
Operators inject compressed CO2 into mature reservoirs, where, under the right conditions, it helps mobilize oil left behind by conventional production.
asserted
it → inject → production
Historically, EOR projects have depended on natural CO2 deposits or large industrial sources connected to oil fields by pipelines.
asserted
projects → depend → pipelines
That works when the reservoir, CO2 source, and infrastructure line up.
asserted
reservoir → work → ?
When they do not, a valuable oil resource can sit hundreds of miles from the CO2 needed to recover it.
asserted
resource → do → it
Sourcing CO2 from the air creates another option.
asserted
Sourcing → source → option
Capturing CO2 from ambient air, known as direct air capture, is difficult because CO2 makes up only about 0.04% of the atmosphere.
asserted
CO2 → capture → atmosphere
But air has one enormous advantage over a natural CO2 deposit: it is everywhere.
asserted
it → have → deposit
If CO2 from the air can be produced economically at or near an oil field, a CO2 supply can potentially be built around the oil resource rather than dictated by geology or pipelines built decades ago.
asserted
supply → produce → geology
That could change the economics of both EOR and direct air capture.
uncertain
That → change → EOR
The first commercial market for direct air capture developed largely around carbon removal.
asserted
market → develop → removal
Buyers paid to remove atmospheric CO2 and store it permanently, helping finance early projects and advance the technology.
asserted
Buyers → pay → technology
EOR offers a second market at a very different scale.
asserted
EOR → offer → scale
A single development can require hundreds of thousands or even millions of tonnes of CO2 annually for years.
asserted
development → require → years
In an oil field, CO2 is an operating input purchased because it can produce additional oil.
asserted
it → purchase → oil
That scale is one reason Spiritus, the direct air capture company I co-founded around carbon removal, is adding EOR to our commercial strategy.
asserted
I → co → strategy
Carbon removal remains an important application.
asserted
removal → remain → ?
EOR adds sustained, high-volume demand that can help deploy the same technology at an industrial scale and drive costs down.
asserted
that → add → costs
Increasing recovery from existing fields can produce more domestic energy from assets America already controls, extend infrastructure already built, and sustain the jobs, royalties, and tax revenues surrounding those fields.
asserted
America → increase → fields
There is also a carbon question, and it should be answered with arithmetic rather than slogans.
asserted
it → be → arithmetic
EOR produces additional oil.
asserted
EOR → produce → oil
No one should pretend otherwise.
asserted
one → pretend → ?
When atmospheric CO2 is used, measure the CO2 captured, account for the energy required to capture and inject it, measure the net CO2 retained underground, and compare that with the lifecycle emissions of the resulting oil.
Do the math and publish it.
If that arithmetic materially reduces the carbon intensity of oil, the result could be especially valuable in sectors such as aviation and shipping, where liquid fuels remain difficult to replace.
uncertain
fuels → use → aviation
Whether a project achieves that outcome should be determined by the numbers.
asserted
achieves → achieve → numbers
The shale revolution demonstrated that technology can transform resources previously considered uneconomic into strategic American assets.
asserted
technology → demonstrate → assets
We may be standing before another such opportunity.
uncertain
We → stand → opportunity
America has already found the oil.
asserted
America → find → oil
The CO2 to unlock more of it is all around us.
asserted
CO2 → unlock → us
Charles Cadieu is CEO and co-founder of Spiritus, an energy technology company developing a new source of CO2 to increase production from existing U.S. oil fields.
asserted
Cadieu → develop → fields
The Aporia
