Tracer and air acceptance characterization of a San Juan basin coal

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As part of an ongoing effort to develop and assess the feasibility of underground coal gasification in New Mexico, a field study was performed to determine the natural flow characteristics of an undisturbed coal seam. Dewatering, air injection, and tracer experiments were conducted on a two-hole test pattern, spaced 30 ft apart, in a 15-ft-thick seam located about 500 ft below the surface. This was the first field experiment in coal to utilize a newly developed downhole measuring system designed and operated by Sandia National Laboratories. From the tracer flow logs and air acceptance tests it was found that the ... continued below

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Pages: 5

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Williams, F. L.; Nuttall, H. E.; Tyner, C. E. & Jacobson, R. D. January 1, 1980.

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Description

As part of an ongoing effort to develop and assess the feasibility of underground coal gasification in New Mexico, a field study was performed to determine the natural flow characteristics of an undisturbed coal seam. Dewatering, air injection, and tracer experiments were conducted on a two-hole test pattern, spaced 30 ft apart, in a 15-ft-thick seam located about 500 ft below the surface. This was the first field experiment in coal to utilize a newly developed downhole measuring system designed and operated by Sandia National Laboratories. From the tracer flow logs and air acceptance tests it was found that the formation allows gas flow (100 SCFM at 250 psi) with low water production (50 gpd). While some vertical variation in air flow and tracer residence time through the coal seam was found, all of the coal sustained flow through a relatively low volume of active voids. Only 10 percent of the injected air was recovered and the recovery rate paralleled trends in the injection rate.

Physical Description

Pages: 5

Notes

NTIS, PC A02/MF A01.

Source

  • 6. underground coal conversion symposium, Afton, OK, USA, 13 Jul 1980

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  • Report No.: SAND-80-1403C
  • Report No.: CONF-800716-7
  • Grant Number: AC04-76DP00789
  • Office of Scientific & Technical Information Report Number: 5392616
  • Archival Resource Key: ark:/67531/metadc1067524

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • January 1, 1980

Added to The UNT Digital Library

  • Feb. 4, 2018, 10:51 a.m.

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  • March 20, 2018, 7:46 p.m.

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Williams, F. L.; Nuttall, H. E.; Tyner, C. E. & Jacobson, R. D. Tracer and air acceptance characterization of a San Juan basin coal, article, January 1, 1980; United States. (digital.library.unt.edu/ark:/67531/metadc1067524/: accessed September 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.