Wells – Processes – Distinct – separate injection and producing wells
Patent
1994-05-03
1995-03-28
Schoeppel, Roger J.
Wells
Processes
Distinct, separate injection and producing wells
166297, 1663051, 166308, 166384, 166 77, E21B 4326
Patent
active
054008565
ABSTRACT:
Methods are provided for overpressured perforating and fracturing of a subsurface formation in a substantially deviated well. A perforating gun is run into the well and is pushed through the deviated portion thereof on a coiled tubing string. The coiled tubing string contains an internal supporting pressure which is high enough to prevent collapse of the coiled tubing string prior to perforation of the well and which is low enough to avoid rupturing the coiled tubing string. After the perforations are formed and the fractures are initiated, the supporting gas pressure in the coiled tubing string is bled off to the atmosphere and the coiled tubing string and perforating gun are retrieved.
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Atlantic Richfield Company
Schoeppel Roger J.
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