Rock Springs Site 12 Hydraulic Explosive True in Situ Oil Shale Fracturing Experiment
Author: Robert H. Parrish
Publisher:
Published: 1977
Total Pages: 149
ISBN-13:
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Author: Robert H. Parrish
Publisher:
Published: 1977
Total Pages: 149
ISBN-13:
DOWNLOAD EBOOKAuthor:
Publisher:
Published: 1980
Total Pages: 147
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DOWNLOAD EBOOKAuthor:
Publisher:
Published: 1980
Total Pages:
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DOWNLOAD EBOOKA true in situ oil shale fracturing and retorting experiment was conducted near Rock Springs, Wyoming in 1977, 1978, and 1979. A 20-foot (6.1 m) thick zone of oil shale located 200 feet (61 m) below surface was hydraulically and explosively fractured. The fractured oil shale was extensively evaluated using flow tests, TV logging, caliper logging, downhole flow logging, core samples, and tracer tests. Attempts to conduct true in situ retorting tests in portions of the pattern with less than 5 percent void space as measured by caliper logs and less than 1 percent active void space measured by tracer test were curtailed when air could not be injected at desired rates. It is thought the fractures plugged as a result of thermal swelling of the oil shale. Air was injected at programmed rates in an area with 10 percent void measured by caliper log and 1.4 pecent active void measured by tracer test. A burn front was propagated in a narrow path moving away from the location of the production well. The vertical sweep of the burn front was measured at less than 4 feet (1.3 m). The burn front could not be sustained beyond 10 days without use of supplemental fuel. The authors recommend a minimum of 5 percent well-distributed void for attempts to retort 20 gpt (81 L/m ton) oil shale in confined beds. A void space of 5 percent may be roughly equivalent to 5 to 10 percent measured by caliper log and 1.4 percent or more by tracer test.
Author: C. K. Jee
Publisher:
Published: 1977
Total Pages: 136
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DOWNLOAD EBOOKAuthor: John S. Miller
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Published: 1974
Total Pages: 116
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DOWNLOAD EBOOKAuthor: Edward L. Burwell
Publisher:
Published: 1969
Total Pages: 16
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Published: 1980
Total Pages:
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Published: 1980
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DOWNLOAD EBOOKThe Site 12 experiment was a heavily instrumented field event performed to examine the hydraulic/explosive fracturing concept for preparing an underground oil shale bed for true in situ processing. One of the key phases of this fracturing concept is the blasting operation which involves the insertion and detonation of slurry explosive in a pre-formed system of hydrofractures. To obtain a sound understanding of the nature of the blasting operations, a rather extensive array of stress gages, accelerometers, and time-of-arrival gages was installed in the rock mass in the vacinity of the explosive to monitor the dynamic events initiated by the detonation. These gages provided considerable amounts of information which were useful in evaluating overall results of the experiment. Details of the gage array, of the data, of analysis methods, and of the results and conclusions are considered in the report.
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Published: 1984
Total Pages: 662
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Publisher:
Published: 1981
Total Pages: 1538
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