Directional coupling sensor for ensuring complete perforation of

Details Directional coupling sensor for ensuring complete perforation of Directional coupling sensor for ensuring complete perforation of

1998-05-16

1999-12-21

Schoeppel, Roger

Wells

Means for perforating, weakening, bending or separating pipe...

With disparate below ground feature

166 66, 166 665, E21B 43119

Patent

active

060035978

ABSTRACT:
A directional collar locator sensor distinguishes between an outer casing collar from an inner pipe coupling deep within a wellbore by selectively positioning a semi-spherical magnetic shield about a magnetic sensor. The collar locator has virtually no moving parts and facilitates conventional logging, perforating multiple completion wellbores, and splitting of casing collars and inner pipe couplings. When used in perforating a well casing, the directional sensor ensures that the perforating gun is pointed in the right direction to produce complete perforations as opposed to just producing dents.

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