Apparatus for orienting perforating gun.

摘要

A downhole perforating tool (20) includes a perforating gun container (47) and at least one eccentrically mounted rotatable weight member (36,56). The weight members and the gun can be releasably coupled at any desired angular orientation by releasable coupling means (40,55). The tool further includes at least two spaced circumferential sleeves (30,60) to contact the borehole wall. Upon lowering the tool into a deviated well with the gun and weight member coupled at a predetermined angle, the weight member turns under the influence of gravity to adopt a lowermost position, so also rotating the perforating gun. The gun is thus positioned at the desired angle in the well borehole. <IMAGE>