Torque transmitting expansion joint and a hanger assembly incorp

Details Torque transmitting expansion joint and a hanger assembly incorp Torque transmitting expansion joint and a hanger assembly incorp

1981-03-23

1983-09-13

Purser, Ernest R.

Wells

With below and above ground modification

Above ground actuating means for below ground device

166240, 166313, 285302, E21B 1707

Patent

active

044036540

ABSTRACT:
A hanger assembly for use in a subterranean well incorporates a torque transmitting expansion joint providing a selectively adjustable extent of axial contraction. The expansion joint essentially comprises a telescopic inter-relationship of two sleeve assemblies. One sleeve assembly carries a fixedly mounted rectangular key which is engagable only with an axially extending slot provided in the other sleeve assembly. The first mentioned sleeve assembly also rotatably mounts a key which cooperates with a peripherally extending slot provided in the other sleeve assembly. The axial extending slot connects with a trough portion of the peripherally extending slot. Successive reciprocations of the two sleeve assemblies produce an incremental rotation of the round key around the peripherally extending slot and normally limits the extent of axial contraction of the two sleeve assemblies to the axial extent of such peripherally extending slot. When the key reaches an angular position in which it is aligned with the axially extending slot, an increased amount of contraction of the two sleeve assemblies can be obtained.

REFERENCES:
patent: 3036641 (1962-05-01), Nutter et al.
patent: 3703104 (1972-11-01), Tamplen
patent: 4050512 (1977-09-01), Giebeler
patent: 4051894 (1977-10-01), Goad
patent: 4143712 (1979-03-01), James et al.
patent: 4280341 (1981-07-01), Krude
patent: 4281858 (1981-08-01), Bowyer

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