Offshore CO2 storage resource assessment of the northern Gulf of Mexico (Texas-Louisiana)

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2019

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The Offshore CO2 Storage Resource Assessment of the Northern Gulf of Mexico (Texas-Louisiana) project (a.k.a., "TXLA" study) supports Goals 3 & 4 of the DOE NETL Carbon Storage Program Plan by aiding industry's ability to predict CO2 storage capacity in geologic formations to within +/- 30%. This is achieved by assessing potential regional storage formations in the State and federally regulated portions of the Gulf of Mexico.

The objective of the project was to conduct an offshore carbon storage resource assessment of the Gulf of Mexico, Texas — Louisiana study area. This was accomplished by:

  1. Assessing the carbon dioxide (CO2) storage capacity of depleted oil and natural gas reservoirs utilizing existing data (well logs, records and sample descriptions from existing or plugged/abandoned wells, available seismic surveys, existing core samples, and other available geologic and laboratory data) from historical hydrocarbon industry activities in the heavily explored portions of the inner continental shelf portions of the Texas and Louisiana Gulf of Mexico coastal areas.

  2. Assessing the ability and capacity of saline formations in the region to safely and permanently store nationally-significant amounts of anthropogenic CO2 using existing data.

Additionally, the study identified at least one specific site with the potential to store at least 30 million tonnes of CO2, which may be considered in the future for commercial or integrated demonstration projects. The study also engaged the public and other stakeholders in the region through outreach activities to apprise them of the study objectives and results.

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