Shifting tools

Patent · Tue Mar 13 00:00:00 EST 1984

OSTI ID:6560549

Fisher, E P; Welch, W R

An improved shifting tool connectable in a well tool string and useful to engage and position a slidable sleeve in a sliding sleeve device in a well flow conductor. The selectively profiled shifting tool keys provide better fit with and more contact area between keys and slidable sleeves. When the engaged slidable sleeve cannot be moved up and the shifting tool is not automatically disengaged, emergency disengagement means may be utilized by applying upward force to the shifting tool sufficient to shear pins and cause all keys to be cammed inwardly at both ends to completely disengage for removal of the shifting tool from the sliding sleeve device.

• Assignee: Otis Engineering Corporation
• Patent Number(s): US 4436152
• OSTI ID: 6560549
• Resource Relation: Patent File Date: Filed date 24 Sep 1982; Other Information: PAT-APPL-422739
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
WELLS
MATERIALS HANDLING EQUIPMENT
DESIGN
DRILL PIPES
HOISTING
POSITIONING
SHEAR
SLEEVES
SPRINGS
WINDOWS
DRILLING EQUIPMENT
EQUIPMENT
MACHINE PARTS
MATERIALS HANDLING
OPENINGS
PIPES
420206* - Engineering- Mining & Drilling Equipment & Facilities- (1980-1989)