Reduction of Greenhouse Gas Emissions through Underground CO2 Sequestration in Texas Oil and Gas Reservoirs

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Today, energy and environmental questions are often viewed from conflicting perspectives. However, perhaps there are solutions to some of these problems that can satisfy multiple objectives. This report explores the technical feasibility and economic potential for capturing CO2 from coal- or lignite-fired utility boilers and applying the CO2 as an enhanced oil recovery (EOR) process in the mature oil provinces of Texas. This capture accomplishes twin goals—sequestering a substantial amount of CO2 for an extended period and increasing the efficiency of oil recovery.

The types of CO2 sources are diverse. To mitigate their impact, a number of management strategies are available, ranging from effluent reduction to capture and sequestration. One alternative is to utilize mature oil reservoirs to form a set of sequestration reservoirs. From the oil production side, one challenge for the domestic oil industry during the next millennium will be to profitably employ advanced technology to increase resources from existing reservoirs. Many advanced recovery strategies hold potential for accomplishing this goal. One promising area is enhanced oil recovery through the use of CO2 flooding. The potential incremental oil production from these methods is significant.


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