06003599 is referenced by 46 patents and cites 16 patents.

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.

Title
Azimuth-oriented perforating system and method
Application Number
8/929431
Publication Number
6003599
Application Date
September 15, 1997
Publication Date
December 21, 1999
Inventor
Joe C Hromas
Sugar Land
TX, US
Klaus B Huber
Sugar Land
TX, US
Agent
John J Ryberg
Jaime A Castano
Jeffrey E Griffin
Assignee
Schlumberger Technology Corporation
TX, US
IPC
E21B 43/119
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