Double-threaded anchor tubing assembly

Details Double-threaded anchor tubing assembly Double-threaded anchor tubing assembly

1994-07-19

1995-07-18

Schoeppel, Roger J.

Wells

Processes

Assembling well part

166382, 1661176, 166124, E21B 1916

Patent

active

054332753

ABSTRACT:
An anchor assembly may be used for interconnecting a downhole tubular member with a packer affixed within a well bore. The anchor assembly may include a mandrel fixedly secured to production tubing, and a collet mechanism axially movable relative to the mandrel. The collet mechanism may have a plurality of axially extending collet fingers each having a first plurality of threads for mating engagement with the packer mandrel threads and a second plurality of threads for mating engagement with the anchor assembly mandrel threads. A sealed member is provided for sealing engagement between the mandrel and the downhole packer. The anchor assembly of the present invention allows substantial axial forces to be transmitted between the production tubing and the set packer without risking collapse of the packer mandrel or failure of the bearing surfaces between the production tubing mandrel and the collet mechanism.

REFERENCES:
patent: 3990510 (1976-11-01), DeCuir
patent: 4345649 (1982-08-01), Baugh et al.
patent: 4375240 (1983-03-01), Baugh et al.
patent: 4685523 (1987-08-01), Paschal et al.
patent: 4928768 (1990-05-01), Peterson
patent: 5332038 (1994-07-01), Tapp et al.
Composite Catalog, Baker Oil Tools Co., Seal Bore Packers, pp. 494-501 (1984-1985).
Baker Oil Tools Advertising, Permanent Packer Systems, 4 pages.
Brown Oil Tools, Inc. (BOT) Advertising, pp. 1177-1179.
Baker Packers Advertising, pp. 672 & 673.

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