Wells – Packers or plugs – Expanded by confined fluid from central chamber – pump or...
Patent
1990-11-12
1992-05-05
Neuder, William P.
Wells
Packers or plugs
Expanded by confined fluid from central chamber, pump or...
277 346, E21B 33127
Patent
active
051099268
ABSTRACT:
An inflatable packing tool is provided for use in a subterranean wellbore. The inflatable packing tool is coupled to a wellbore conduit with a central bore which directs pressurized fluid into the wellbore. The inflatable packing tool includes a central tubular body for directing fluid in the wellbore. Upper and lower stationary collar members are secured to the central tubular body for coupling the central tubular body to the wellbore conduit. An annular inflatable packing element surrounds the central tubular body, and includes a flexible fluid-tight sleeve covered by a plurality of overlapping an axially extending reinforcing ribs. A slidable sleeve assembly is coupled to one end of the annular inflatable packing element. A locking means is provided for fixing the position of the slidable sleeve assembly during a deflated running mode to prevent axial movement of the slidable sleeve assembly relative to the central tubular body, rotational movement of the slidable sleeve assembly relative to the central tubular body, and twisting of the plurality of overlapping and axially extending reinforcing ribs out of axial alignment with the central longitudinal axis of the central tubular body.
REFERENCES:
patent: 4406461 (1983-09-01), McGill
patent: 4834175 (1989-05-01), Ross et al.
patent: 4923007 (1990-05-01), Sanford et al.
Berzin Vel
Burtner, III James C.
Ford Randle E.
Mody Rustom K.
Baker Hughes Incorporated
Hunn Melvin A.
Neuder William P.
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