Apparatus and method for centralizing pipe in a wellbore

Details Apparatus and method for centralizing pipe in a wellbore Apparatus and method for centralizing pipe in a wellbore

1993-04-20

1994-09-13

Dang, Hoang C.

Wells

Processes

Assembling well part

166212, 1662411, 166242, 166383, E21B 1710

Patent

active

053460162

ABSTRACT:
A system for centralizing casing pipe in a wellbore includes lateral pistons in the side wall of the casing string which are movable by forces applied to their inner end, from a retracted position within the maximum exterior profile of the casing pipe string to a predetermined extended position which will move the casing pipe string toward a central position in the borehole. Various well operations can be performed using the pistons in addition to the centralizing function.

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