Selectively releasable and reengagable expansion joint for subte

Details Selectively releasable and reengagable expansion joint for subte Selectively releasable and reengagable expansion joint for subte

1987-03-05

1988-10-18

Massie, Jerome W.

Wells

Processes

Placing or shifting well part

166242, 166 64, 285 2, 285 3, 285 18, 285187, 285302, E21B 1706, E21B 1707, F16L 2712

Patent

active

047780088

ABSTRACT:
The invention provides an apparatus for limiting tension produced in a tubular string extending from a packer set in a subterranean well to the well surface. Such apparatus comprises a receptacle secured to the packer and defining an elongated seal bore, and a mandrel telescopically and sealably related to the seal bore, the mandrel being connected to the bottom end of the tubing string. In one embodiment, a collet, incorporated in the receptacle for cooperating with an abutment formed on the mandrel, thereby securing the mandrel and the receptacle in a telescopically contracted position until sufficient tensile force is exerted on the mandrel to cause the collet arms to be expanded by the abutment to permit upward movement of the mandrel relative to the receptacle.

REFERENCES:
patent: 4008759 (1977-02-01), Blackwell
patent: 4040649 (1977-08-01), Blackwell
patent: 4281858 (1981-08-01), Bowyer
patent: 4423889 (1984-01-01), Weise
patent: 4613159 (1986-09-01), Harris et al.

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