Wells – Processes – With indicating – testing – measuring or locating
Patent
1997-09-15
1999-12-21
Dang, Hoang
Wells
Processes
With indicating, testing, measuring or locating
166 551, 166297, 175 451, E21B 43119
Patent
active
060035994
ABSTRACT:
An apparatus for positioning a tool, such as a perforating gun, in a wellbore to orient the tool in a desired direction. An anchor having a first reference terminal is set in the wellbore, the first reference terminal pointing in a known direction. A second reference terminal is attached to the tool, the second reference terminal being coupled to the first reference terminal to orient the tool in the desired direction. A gyroscope measures the direction of the first reference terminal with respect to the magnetic north. The perforating gun includes charges arranged to perform perforating along a preferred fracture plane, such as 0.degree.- or 180.degree.-phased perforating.
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Hromas Joe C.
Huber Klaus B.
Castano Jaime A.
Dang Hoang
Griffin Jeffrey E.
Ryberg John J.
Schlumberger Technology Corporation
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