| http://www.w3.org/ns/prov#value | - Hydraulically isolating the section of the well in which it is located from the rest of the well...http://www.google.com/patents/US5642051?utm_source=gb-gplus-sharePatent US5642051 - Method and apparatus for surveying and monitoring a reservoir penetrated by a well including fixing electrodes hydraulically isolated within a wellAdvanced Patent SearchPublication numberUS5642051 APublication typeGra
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