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3-D Seismic Technology Locates Natural Gas In Fractured Reservoirs

Date:
February 10, 2005
Source:
National Energy Technology Laboratory
Summary:
Large volumes of natural gas are being tapped from the tight rocks of the San Juan Basin in New Mexico’s Rio Arriba County using a new technology developed in a project sponsored by the U.S. Department of Energy (DOE).

Rio Arriba County, N.M. — Large volumes of natural gas are being tapped from the tight rocks of the San Juan Basin in New Mexico’s Rio Arriba County using a new technology developed in a project sponsored by the U.S. Department of Energy (DOE).

In this cost-shared project, GeoSpectrum, Inc., of Midland, Texas, uses 3-D seismic to locate fractures in the earth that provide access to millions of cubic feet of untapped natural gas in four new wells—including one well that is now producing up to 2 million cubic feet per day.

"The key innovation in this project is the integration of technologies that map previously unseen fracture lineaments and perturbations in seismic data, and then target fracture "sweet spots" where multiple fractures intersect," said geophysicist Francis Toro, who manages the project for DOE’s National Energy Technology Laboratory.

The Energy Department awarded the contract in 1999 to spearhead the development of technologies and methods to locate known resources of natural gas contained within naturally fractured, tight reservoirs. Locating those fractures is important because they provide pathways for gas flow in rocks that have very low permeability. By drilling in those locations, greater supplies of natural gas can be accessed and recovered.

About 460 trillion cubic feet of natural gas—almost three times the amount of existing gas reserves nationwide—is estimated to exist nationwide in these low-permeability reservoirs. The key to producing this vast resource is to locate and drill areas where natural fractures improve the quality of these tight reservoirs.

To find natural fractures, GeoSpectrum, along with Burlington Resources and Huntington Energy, applied an innovative technology that combines seismic analysis, petrophysical analysis, and analysis of existing wells to identify potential fracture sweet spots, where gas is concentrated and able to flow to a well bore.

The successful demonstration shows that the technology can locate natural fractures in gas-bearing formations while reducing the risks associated with drilling in tight reservoirs. The ultimate benefit will be the location and recovery of vast new energy sources to meet increasing needs nationwide for clean-burning natural gas.


Story Source:

The above story is based on materials provided by National Energy Technology Laboratory. Note: Materials may be edited for content and length.


Cite This Page:

National Energy Technology Laboratory. "3-D Seismic Technology Locates Natural Gas In Fractured Reservoirs." ScienceDaily. ScienceDaily, 10 February 2005. <www.sciencedaily.com/releases/2005/02/050210004544.htm>.
National Energy Technology Laboratory. (2005, February 10). 3-D Seismic Technology Locates Natural Gas In Fractured Reservoirs. ScienceDaily. Retrieved September 20, 2014 from www.sciencedaily.com/releases/2005/02/050210004544.htm
National Energy Technology Laboratory. "3-D Seismic Technology Locates Natural Gas In Fractured Reservoirs." ScienceDaily. www.sciencedaily.com/releases/2005/02/050210004544.htm (accessed September 20, 2014).

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