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G01V 3/18 (2006.01) C09K 8/88 (2006.01) E21B 43/25 (2006.01) E21B 47/00 (2006.01) E21B 49/08 (2006.01)
Patent
CA 1298872
Docket 870035 000 Abstract of the Disclosure A method of conducting an electric resistivity logging operation, A readily flowable liquid composition containing a breaker is formed from water of different resistivity than that of the formation water. Fluids in the well bore are displaced by the liquid composition and the composition is allowed to gel. The gel may be highly viscous, which prevents ingress of formation fluids but permits logging equipment to be moved therethrough, or the gel may be removed and replaced with fresh water prior to the logging operation. In the latter case gel would remain in the formation adjoining the well bore to prevent ingress of formation fluids. After effecting the log the gel breaks down to a liquid and is removed from the well bore.
611098
Falk David O.
Macrae & Co.
Marathon Oil Company
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