Apparatus and methods for locating tools in subterranean wells

Details Apparatus and methods for locating tools in subterranean wells Apparatus and methods for locating tools in subterranean wells

1997-12-04

2000-04-04

Suchfield, George

Wells

Processes

Placing or shifting well part

1661175, 166237, 1662426, E21B 2303, E21B 4314

Patent

active

060449098

ABSTRACT:
Temporary no-go assemblies for use in locating a downhole tool at a predetermined target depth in a well are disclosed. Certain ones of the assemblies include a no-go sleeve for interfacing with a no-go shoulder in a casing and an actuating system for releasing the assembly from the no-go sleeve. Other ones of the assemblies include a key for engaging a landing nipple in a casing and a key retractor for retracting the key from the nipple. Still other ones of the assemblies include a key for engaging a no-go shoulder in a casing and a key retractor for retracting the key from the no-go shoulder. The assemblies are particularly useful in drilling and completing wells from a floating drilling rig.

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