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Title: Postburn characterization of a modified in situ oil shale retort, Piceance Creek Basin, Colorado

Journal Article · · In Situ; (USA)
OSTI ID:5495479
;  [1]
  1. University of Wyoming Research Corp., Laramie, WY (USA). Western Research Inst.

An investigation was conducted to provide information about post processing mineralogical and lithological characteristics of a modified in situ (MIS) oil shale retort. Samples of retort contents and overburden were obtained from three core holes drilled into the Rio Blanco Tract C-a retort 1 in the Piceance Creek Basin, Colorado. Drilling and logging records indicate 35 to 40 feet of roof rock had collapsed into the retort since the burn was completed four years earlier. A water filled cavity 46 to 62 feet high existed at the topp and 374 feet of rubble was encountered in the bottom of the retort. Material from the retort was determined to be a highly altered, fused, vesicular rock with lessor amounts of carbonized, oxidized, and moderately heat altered oil shale. Thermal alteration produced high temperature silicate minerals from the original mixture of carbonate and silicate minerals.

OSTI ID:
5495479
Journal Information:
In Situ; (USA), Vol. 13:1; ISSN 0019-3267
Country of Publication:
United States
Language:
English