Method of determining the depth of occurrence of a chemically reactive bed
CA 1160950 A · Owner: Sredneaziatsky Nauchno-Issledovatelsky Institut Prirodnogo Gaza · Inventors: Alekhin, Stanislav A.; Bakhir, Tatiana M.; Alimdzhanov, Khamidulla A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The method of determining the depth of occurrence of a chemically reactive bed in the course of drilling a well, as proposed in the present invention resides in the fact that the redox potential of the drilling mud situated in the well, is measured, the walls of the well are stripped of the mud cake, and an additional portion of the drilling mud is prepared, whose redox potential differs as to value, and direction, from that of the drilling mud situated in the well, Then the thus prepared additional drilling mud portion is injected into the well until the drilling mud that has been situated therein previously is expelled com-, pletely, whereupon the circulation of the additional drilling …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted January 24, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 24, 2001.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.