Wells – Processes – With indicating – testing – measuring or locating
Patent
1997-06-03
1998-12-22
Tsay, Frank
Wells
Processes
With indicating, testing, measuring or locating
166 66, E21B 4701
Patent
active
058508791
ABSTRACT:
Disclosed is a method of communicating data and control signals between a down hole well tool and surface equipment wherein variations in the tension of the line supporting the tool from a reference tension value established with the well tool in place for operation are imposed at one location on the support line and detected at another location on said support line said variations in tension being coded in frequency, magnitude, polarity or duration or combinations thereof to convey the data and control signals between the two locations.
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Booth John F.
Halliburton Energy Service,s Inc.
Herman Paul I.
Tsay Frank
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