Wells – Processes – Freeing stuck object – grappling or fishing in well
Reexamination Certificate
2005-02-08
2005-02-08
Neuder, William (Department: 3672)
Wells
Processes
Freeing stuck object, grappling or fishing in well
C166S066000
Reexamination Certificate
active
06851476
ABSTRACT:
An apparatus and method of determining the point at which a tubular is stuck within another tubular or a wellbore by applying a tensile or torsional force to the stuck tubular and measuring the response of various locations within the tubular. In addition, the apparatus may be combined with a cutting tool to separate the free portion of the tubular from the stuck portion.
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PCT International Search Report, International Application No. PCT/GB 02/03604, dated Oct. 15, 2002.
Estes James D.
Gray Kevin L.
Moser, Patterson & Sheridan L.L.P.
Neuder William
Weather/Lamb, Inc.
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