Rotatable liner hanger

Details Rotatable liner hanger Rotatable liner hanger

1988-05-09

1989-07-18

Massie, IV, Jerome W.

Wells

Expansible anchor or casing

Liner hanger

166212, 166217, E21B 2300, E21B 4310

Patent

active

048484628

ABSTRACT:
A rotatable liner hanger for an oil well with a supporting mandrel having an annular recess with upper and lower shoulders and a tubular housing and a bearing means disposed in the recess. The housing has elongated windows with side surfaces having tongue and grooves at an inclination angle of 15.degree. and elongated slip members with interfitting tongue and grooves along their side surfaces where the slip members are initially retracted within the windows of the housing and are extendible outwardly into load bearing support with a casing. A selectively actuated device controls the positioning of the slip members and an annular recess in the housing provides a bypass area when the slip members are extended.

REFERENCES:
patent: 3012612 (1961-12-01), Wright et al.
patent: 3285345 (1966-11-01), Solum
patent: 3463229 (1969-08-01), Hinkle
patent: 4688642 (1987-08-01), Baker
patent: 4712614 (1987-12-01), Allwin et al.
patent: 4712615 (1987-12-01), Dockins, Jr. et al.
patent: 4762177 (1988-08-01), Smith, Jr.

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