High resolution seismic survey of the Hanna, Wyoming underground coal gasification area

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Description

In November 1980 a high resolution seismic survey was conducted at the Department of Energy, Laramie Energy Technology Center's underground coal gasification test site near Hanna, Wyoming. The objectives of the survey were to determine the feasibility of utilizing high resolution seismic technology to locate and characterize underground coal burn zones and to identify shallow geologic faults at the test site. Seismic data acquisition and processing parameters were specifically designed to emphasize reflections at the shallow, 61 to 91 meter (200 to 300 foot) depths of interest. A three-dimensional grid of data was obtained over the Hanna II, Phases 2 ... continued below

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Pages: 49

Creation Information

Youngberg, A.D.; Berkman, E. & Orange, A. January 1, 1982.

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Description

In November 1980 a high resolution seismic survey was conducted at the Department of Energy, Laramie Energy Technology Center's underground coal gasification test site near Hanna, Wyoming. The objectives of the survey were to determine the feasibility of utilizing high resolution seismic technology to locate and characterize underground coal burn zones and to identify shallow geologic faults at the test site. Seismic data acquisition and processing parameters were specifically designed to emphasize reflections at the shallow, 61 to 91 meter (200 to 300 foot) depths of interest. A three-dimensional grid of data was obtained over the Hanna II, Phases 2 and 3 burn zone. Processing included time varying filters, deconvolution, trace composition, and two-dimensional, areal stacking of the data in order to identify burn zone anomalies. An anomaly was clearly discernable resulting from the rubble-collapse void above the burn zone which was studied in detail and compared to synthetic models. It is felt, based on these results, that the seismic method can be used to define similar burns if great care is taken in both acquisition and processing phases of an investigation. The fault studies disclosed faults at the test site of hitherto unsuspected complexity. The fault system was found to be a graben complex with numerous antithetic faults. The antithetic faults also contain folded beds. One of the faults discovered may be responsible for the unexpected problems experienced in some of the early in-situ gasification tests at the site. A series of anomalies were discovered on the northeast end of one of the seismic lines, and these reflections have been identified as adits from the old Hanna No. 1 Coal Mine.

Physical Description

Pages: 49

Notes

NTIS, PC A03/MF A01.

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  • Other: DE82006887
  • Report No.: DOE/LC/RI-82-1
  • Grant Number: None
  • DOI: 10.2172/5276721 | External Link
  • Office of Scientific & Technical Information Report Number: 5276721
  • Archival Resource Key: ark:/67531/metadc1069919

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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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Creation Date

  • January 1, 1982

Added to The UNT Digital Library

  • Feb. 4, 2018, 10:51 a.m.

Description Last Updated

  • March 28, 2018, 1:16 p.m.

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Youngberg, A.D.; Berkman, E. & Orange, A. High resolution seismic survey of the Hanna, Wyoming underground coal gasification area, report, January 1, 1982; United States. (digital.library.unt.edu/ark:/67531/metadc1069919/: accessed October 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.