Method of repairing tubular members on oil and gas wells

Details Method of repairing tubular members on oil and gas wells Method of repairing tubular members on oil and gas wells

2006-02-14

2006-02-14

Gay, Jennifer H (Department: 3672)

Wells

Processes

Repairing object in well

C166S075130, C166S298000, C166S367000, C166S364000, C138S099000, C405S216000

Reexamination Certificate

active

06997260

ABSTRACT:
The disclosure concerns a method and apparatus for repairing or structurally reinforcing an oil and gas well tubular member, or an assembly of tubular members. The assembly to be repaired can include a smaller diameter inner flow conveying conduit (or production tubing) and a larger diameter concentrically placed surface casing, providing an annulus in between the production tubing and the surface casing. A third casing pipe of largest diameter, the drive pipe is placed around the surface casing string. Other “conductor” casing pipes can be positioned around the surface casing inside the drive pipe. Part of the surface casing string (or other conductor pipe) can suffer damage due to corrosion. A sleeve or repair member is placed around the casing string or other tubular member at a damaged portion.

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