Texas is hot below ground and full of folks with oil and gas drilling expertise, so that makes it ripe for a geothermal energy boom, according to a new study from researchers at five Texas universities.
Researchers from The University of Texas at Austin, Southern Methodist University, Rice University, Texas A&M University, and the University of Houston, as well as the University Lands Office and the International Energy Agency, just published a landmark study, “The Future of Geothermal in Texas: The Coming Century of Growth & Prosperity in the Lone Star State.”
The study evaluates the scale-up potential of geothermal — the earth’s internal heat that can be harnessed as renewable energy — in Texas, as well as its potential to scale globally over the coming decades.
There are at least 12 geothermal startups currently headquartered in Texas, with many more maintaining a business presence, employees, or planning projects in the state. Almost 90% of these startups were founded and launched in the last 24 months, and they’re being invested in by oil and gas majors.
And what makes Texas unique is that geothermal energy can be produced from existing oil and gas wells, as either electricity or direct-use heat.
All of the startups have oil and gas industry veterans in their ranks because of course they have drilling-for-energy transferrable skills.
The study’s authors report that oil and gas technology and knowledge transfer is projected to deliver 20-43% in cost savings to geothermal, using existing oil and gas industry technologies. Further, 70% of oil and gas respondents to the study asserted that there are no geothermal-related technical challenges that the oil and gas industry can’t solve.
The researchers calculated a number of geothermal growth scenarios, both globally and in Texas, placed in the context of the scale of the oil and gas industry. They concluded that drilling 1.4 million wells globally between 2030 and 2050 could meet 77% of the world’s projected electricity demand, and Texas would be able to decarbonize 100% of its grid.
Jamie Beard, principal investigator and editor of the study, said:
The outcomes of this study are big – but so is the oil and gas industry – and the role of the industry is what has been the missing link in prior assessments about geothermal and its potential to scale.
To achieve the outcomes reported, we would need an Apollo-style mobilization of effort globally, but that is what climate change requires of us. We’ve done Apollo before – let’s do it again.
The Texas study is going to serve as a model for a program supported by geothermal expansion nonprofit Project InnerSpace to develop similar, state-specific geothermal roadmaps across the US where there’s current oil and gas industry engagement.
Top comment by Recovering Drillaholic
It can be very hot below Texas. I worked on a couple of wells just outside Franklin, Tx and we were drilling high pressure high temp wells.
I would caution against taking the university studies in using existing wells as there’s lots of potential issues with the integrity of them. Also the wells were designed for extraction and not injection of fluids so there could be issues with the fluid composition and temperature differences depending on the well design envelope. Also using existing wells, then the fluids coming out need to be separated and the water cleaned at surface. Injecting hydrocarbons and water that isn’t clean will likely sour the system and create an H2S problem that nobody wants as that will lead to steel integrity issues. Maybe the study covered those issues.
I would think a new well would cost $10-15mil, just finger in the air.
Projects in Idaho, Oklahoma, Louisiana, North Dakota, South Dakota, and Utah will launch in the first half of this year.
Read more: Here’s how deep geothermal drilling might be clean energy’s future
Photo: “Picture A Day September 26, 2010 – Santa Rita No. 1, Completed May 27, 1923” by mlhradio is licensed under CC BY-NC 2.0.
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