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Core alteration and preservation (view source)
Revision as of 17:54, 7 January 2016
, 17:54, 7 January 2016no edit summary
Filtrate invasion can be minimized several ways:<ref name=Basan_etal_1988 /><ref name=Keelan_etal_1985>Keelan, D. K., and D. A. T. Donohue, 1985, Core analysis: Boston, MA, IHRDC Video Library for Exploration and Production Specialists, n. PE405, 186 p.</ref>
Filtrate invasion can be minimized several ways:<ref name=Basan_etal_1988 /><ref name=Keelan_etal_1985>Keelan, D. K., and D. A. T. Donohue, 1985, Core analysis: Boston, MA, IHRDC Video Library for Exploration and Production Specialists, n. PE405, 186 p.</ref>
* Select a bit that directs the drilling fluid away from the core rather than toward it.
* Select a bit that directs the [[drilling fluid]] away from the core rather than toward it.
* Increase the coring speed. The faster the core enters the core barrel, the less time there is for invasion to occur.
* Increase the coring speed. The faster the core enters the core barrel, the less time there is for invasion to occur.
* Establish a low pressure differential between the drilling fluid and the reservoir.
* Establish a low pressure differential between the drilling fluid and the reservoir.