Methods of perforating a well using coiled tubing

Details Methods of perforating a well using coiled tubing Methods of perforating a well using coiled tubing

E - Fixed Constructions

21

B

E21B 43/116 (2006.01) E21B 23/00 (2006.01) E21B 23/01 (2006.01) E21B 23/04 (2006.01) E21B 43/1185 (2006.01)

Patent

CA 2133817

Abstract Of The Disclosure Methods of perforating a well using coiled tubing conveyed perforating guns are disclosed. A perforating tool string includes a coiled tubing string, a perforating gun, a releasable gun hanger, and a pressure responsive release connecting the coiled tubing string to the perforating gun. The perforating tool string is lowered into place within the well and then the gun hanger is actuated by reciprocating motion of the coiled tubing string without rotating the coiled tubing string, thereby setting the gun hanger in the casing. Fluid pressure is then increased in the coiled tubing string to actuate the pressure responsive release to release the coiled tubing string from the perforating gun. The coiled tubing string and pressure responsive connector may then be retrieved from the well prior to firing the perforating gun. The perforating gun is subsequently fired by a pressure responsive firing head to perforate the well casing, and the perforating gun then automatically drops to the bottom of the well casing.

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