Well plugging apparatus and method

Details Well plugging apparatus and method Well plugging apparatus and method

1993-04-26

1994-11-08

Buiz, Michael Powell

Wells

Processes

Cementing, plugging or consolidating

166135, E21B 3300

Patent

active

053618408

ABSTRACT:
An apparatus for plugging a burning or gushing well comprises a hollow tubular plug body (20) sized for insertion into a well casing (112). Provided on the plug body are a retainer module (54) for retaining the plug within the well casing; a sealing sleeve (46) provided for forming a seal between the plug body and the well casing; and a valve assembly (50) for selectively closing a hollow internal passageway of the tubular plug body. The plug body is loaded on a gantry assembly (21), which in turn is carried by a shielded vehicle (24). At the base of the gantry assembly are provided an alignment assembly (37) for aid in approach to the well casing and a cutter assembly (40) for sawing off inordinately protruding casings. In one embodiment, a protective break-away shell (118) circumferentially surrounds at least a portion of the plug body.

REFERENCES:
patent: 4007783 (1977-02-01), Amancharla et al.
patent: 4129184 (1978-12-01), Parker
patent: 4299281 (1981-11-01), Long et al.
patent: 4603742 (1986-08-01), Wong et al.
patent: 4718488 (1988-01-01), Pringle et al.
patent: 4875615 (1989-10-01), Savard

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