Wells – Processes – With indicating – testing – measuring or locating
Patent
1984-06-15
1987-01-27
Novosad, Stephen J.
Wells
Processes
With indicating, testing, measuring or locating
166 55, 166 651, 166297, 166383, E21B 2308, E21B 4311, E21B 4700
Patent
active
RE0323365
ABSTRACT:
A method and apparatus for conducting logging or perforating operation in a borehole, particularly a deviated borehole, includes lowering a length of drill pipe having the well-logging tool, or well bore perforator, releasably mounted thereon into the borehole. An extension member, which is also lowered through the drill pipe, is secured to the well-logging tool, or well bore perforator, and releases it from the drill pipe, whereupon the extension member and well-logging tool or well bore perforator are moved through the borehole. The apparatus includes a latching sub mounted to the end of the length of drill pipe, and a latching head releasably mounted within the latching sub for releasably holding a well-logging tool or well bore perforator within the latching sub.
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Grigorian, A. M., "Formation Exposure Through Branched (Multi-Bottom) and Horizontal Wells", published by Nedra Press, Moscow, 1969, pp. 76-79.
"Ultrahigh-Angle Wells are Technical and Economic Success", The Oil and Gas Journal, Jul. 19, 1976.
Escaron Pierre C.
Hoppe Joachim A.
Novosad Stephen J.
Schlumberger Technology Corporation
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