E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 43/12 (2006.01) E21B 29/08 (2006.01) E21B 33/06 (2006.01)
Patent
CA 2056917
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.
Chabot Steve
Thompson Douglas B.
LandOfFree
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