TGS significantly expands saline aquifer coverage for CO2 storage assessment, including eight additional US onshore basins

This week, TGS unveiled its ambitious expansion strategy for saline aquifer interpretation across the United States, slated for implementation throughout the current year and early into next year. This assessment includes petrophysical interpretation on over 43,000 wells across an impressive 378 million acres and encompasses 8 pivotal regions, including the Gulf Coast Onshore, Permian, Illinois, Michigan, Appalachia, North Dakota, Sacramento-San Joaquin, and Denver-Julesburg.

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Notably, these regions coincide strategically with some of the nation's most significant CO2 emissions sources. A staggering 2,345 EPA-regulated emitters collectively producing over 907 million metric tons of CO2 annually, or about 14% of total US emissions (as of 2022), overlap with the expansion.

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A recent interpretation conducted by TGS across southern Arkansas, Mississippi, and Alabama has unveiled significant storage potential within numerous formations, with particular promise found in the Lower Cotton Valley Formation. This comprehensive assessment encompassed 29 formation tops and derived petrophysical curves from an extensive dataset spanning 7,500 wells. These petrophysical curves offer crucial insights into saline aquifer storage capacity, encompassing vital attributes such as clay volume, water saturation, porosity, reservoir/seal flags, permeability, temperature, pore pressure, irreducible water, salinity, and CO2 capacity. Remarkably, the Lower Cotton Valley Formation alone boasts a maximum carbon sequestration capacity of 648,205 million metric tons across approximately 23 million acres in the region. Recognizing the urgency for thorough analysis in subsurface carbon sequestration, TGS remains steadfast at the forefront of pioneering a sustainable future.

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For more information on our CO2 Storage Assessment or to schedule a demo, contact us at