Modifying expansion forces by adding compression
OwnerMark Wilson Anderson, Donald Bruce Campo +2inventors
InventorsMark Wilson Anderson, Donald Bruce Campo, Robert Lance Cook, Darrell Scott Costa
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Abstract
A method for expanding a tubular in a borehole, the tubular having upper and lower ends, the system comprises a) applying a compressive load to the upper end of the tubular and b) expanding the tubular by moving an expansion device relative to the tubular while maintaining the compressive load. Step a) may include resting a weight on the upper end of the tubular or applying hydraulic pressure to the upper end of the tubular. The lower end of the tubular may engage the formation before step b) or as a result of step b).
Claims10
A method for expanding a tubular in a borehole, the tubular having upper and lower ends and an expansion device positioned below the upper end, the method comprising:
- a) applying a compressive load to the upper end of the tubular;
- and
- b) expanding the tubular by moving the expansion device toward the upper end of the tubular while maintaining said compressive load.
Dependencies are inferred from the claim text.