Abstract

Subject to the severe interference of bacterial gas and coal-bed gas of the marsh area, the geochemical exploration over surface hydrate in Muli permafrost of Qilian Mountains takes on widely distributed methane geochemical anomalies. The natural thermoluminescence hydrate prospecting technique was tested in the project. 7 natural thermoluminescence anomalies were detected and circled out. Anomaly I indicates the hydrate reservoir anomaly. In 2013, according to the geophysical and geochemical exploration results (including natural thermoluminescence anomalies), three layers of hydrate were collected from the deployed DK-9 well. Compared with the soil acid extracted hydrocarbon, natural thermoluminescence is not subject to the bacterial gas and coal-bed gas of marsh, so it is considered as a new assistive technology for hydrate prospecting.

Keywords:
anomaly, thermoluminescence anomaly, gas hydrate, permafrost, exploration, chiefly, hydrate, migration, qilian mountain permafrost, hydrate reservoir
Subjects:
Reservoir Characterization, Non-Traditional Resources, Exploration, development, structural geology, Gas hydrates
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2014. International Society of Offshore and Polar Engineers
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