Rotatable liner hanger
This patent describes a rotating liner hanger for use in well bores including a tubular liner hanger mandrel adapted for coupling to a liner. The liner hanger mandrel having an annular outer recess; a tubular housing member and an annular bearing means rotatively mounted in the annular recess where the bearing means is disposed between the mandrel and the upper end of the housing member and defines an outer diameter portion. The housing member having circumferentially spaced, elongated openings and having a diameter not to exceed the outer diameter portion; elongated slip members disposed in the elongated openings in a contracted condition so as to have their outer surfaces located within the outer circumference of the housing member. The slip members and the openings have inclined tongue and groove interconnections disposed along the side of the slip members and the openings, the tongue and groove interconnections being inclined at an angle of approximately 15{sup 0} with respect to a longitudinal axis of a slip and opening; and hydraulic means circumferentially arranged on the hanger mandrel so as to not exceed the diameter of the outer diameter portion. The hydraulic means being responsive to fluid pressure within the bore of the hanger mandrel and being attached to the slip members for obtaining relative movement between the housing member and the slip members in response to hydraulic pressure.
- Assignee:
- Lindsey Completion Systems, Inc., Midland, TX
- Patent Number(s):
- US 4848462
- Application Number:
- PPN: US 7-191387A
- OSTI ID:
- 5284126
- Resource Relation:
- Patent File Date: 9 May 1988
- Country of Publication:
- United States
- Language:
- English
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