Wells – Means for perforating – weakening – bending or separating pipe... – With disparate below ground feature
Patent
1997-10-07
1999-09-28
Suchfield, George
Wells
Means for perforating, weakening, bending or separating pipe...
With disparate below ground feature
166207, 166277, E21B 2900, E21B 2908
Patent
active
059571950
ABSTRACT:
A stroke indicator has been invented for indicating that a movable inner member of an hydraulically activated wellbore tool or apparatus has moved, particularly that movement of such a member indicating that a stroke of the tool or apparatus has occurred. In one aspect such an indicator is used to indicate that the stroke of a wellbore tubular patch expander system has been completed. A tubular patch has been invented which includes two or more connected tubular patch members. A tubular patch system has been invented for patching operations which, in one aspect, is useful as a "through tubing" tubular patch system and has a body and a series of selectively expandable members which, once having passed through a tubular of a first diameter, are expandable in a tubular of a second diameter larger than the first diameter and then operable to expand a liner patch to seal a leak in the tubular of the second diameter. Such a system may be used in a tubular disposed within a wellbore or in a tubular on the earth surface.
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Bailey Thomas R.
Haugen David M.
Smalley Michael T.
Tilton Frederick T.
Wright Ralph D.
McClung Guy
Suchfield George
Weatherford / Lamb, Inc.
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