Apparatus for regaining control over oil and gas flowing from "b

Details Apparatus for regaining control over oil and gas flowing from "b Apparatus for regaining control over oil and gas flowing from "b

1992-11-24

1994-01-25

Bui, Thuy M.

Wells

Means for perforating, weakening, bending or separating pipe...

With disparate below ground feature

E21B 2900

Patent

active

052808238

ABSTRACT:
An apparatus for regaining control over the flow of oil and gas from "blow out" wells having a housing consisting of two portions which are adapted to be fastened around an insitu well casing. The housing has a top, a bottom, an exterior surface and a central passage. The housing is rotatably secured to the insitu well casing, such that the well casing extends through the central passage. Cutters are provided which communicate with the central passage of the housing. Upon rotation of the housing the cutters move systematically around the circumference of the insitu well casing until it is severed. Rams are positioned adjacent the top of the housing for closing the central passage upon the severing of the well casing.

REFERENCES:
patent: 3399728 (1968-09-01), Taylor
patent: 3693715 (1972-09-01), Brown
patent: 3732924 (1973-05-01), Chelette et al.
patent: 3789689 (1974-02-01), Mace

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