Wells – Above ground apparatus – Having structure for converting from one mode of operation...
Patent
1992-10-19
1994-05-10
Bui, Thuy M.
Wells
Above ground apparatus
Having structure for converting from one mode of operation...
166 55, 166 85, E21B 3300
Patent
active
053099893
ABSTRACT:
An apparatus for controlling well fires which has a controllable extension pipe, a clamping base and a sealing assembly. The sealing assembly includes a moveable sealing sleeve located between an outer and an inner nesting pipe and plastically deformable sealing material located at one end of the nesting pipes. The sealing assembly is attached to a clamping base. The clamping base can be of two different constructions, a top mount base which, along with the attached sealing assembly, is lowered over the well pipe and a side mount base which clamps from the side with the assembly rotated away from the well pipe. All apparatus controls and method steps can be remotely accomplished.
The top mount base is clamped to the pipe after lowering the apparatus over the well pipe to the point where the well pipe passes through the clamping base and into the interior of the inner nesting pipe. The side mount base is clamped to the well pipe from the side, then the sealing assembly is rotated above the well pipe and lowered to the point where the well pipe is inserted into the inner nesting pipe. The sealing sleeve then forces the sealing material against the well pipe and the inner nesting pipe. The extension pipe is then controlled by actuating a controlling valve, capping the well and extinguishing the fire. The side mount clamping base can be removed from the controlled well for reuse after a clamping jacket is clamped to the exterior nesting pipe and the well pipe.
REFERENCES:
patent: 3693715 (1972-09-01), Brown
patent: 3789689 (1974-02-01), Mace
patent: 5121797 (1992-06-01), DeCuir, Sr.
patent: 5133405 (1992-07-01), Elliston
Bui Thuy M.
Evans Richard W.
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