Automatic pipe elevator

Patent · Tue Mar 17 04:00:00 EST 1987

OSTI ID:6632226

Haney, K M; Willis, C A

This patent describes an elevator adapted for use with a power swivel for supporting a drilling or production tubular, the elevator comprising: at least two jaws, each jaw having a clamping surface; a connector member for supporting the jaws, the connector member comprising an upper end, a lower end, means for coupling the upper end to the power swivel, means for coupling the lower end to a tubular. The member also comprises means for defining a passageway extending from the upper end to the lower end through the connector member to allow drilling mud to be passed from the power swivel through the bore, into the tubular; and linkage means mounted between the connector member and the jaws for coupling the jaws to the connector member and for maintaining the clamping surfaces of the jaws in clamping engagement with the tubular when the connector member and the tubular are urged apart relative to one another. The linkage means is configured such that the force by which the clamping surfaces clamp the tubular increases as the force urging the connector member and the tubular apart increases.

• Assignee: W-N Apache Corp., Wichita Falls, TX
• Patent Number(s): US 4650236
• OSTI ID: 6632226
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
CONDUCTOR DEVICES
CONNECTORS
DRILL PIPES
DRILLING
DRILLING EQUIPMENT
ELECTRICAL EQUIPMENT
EQUIPMENT
FABRICATION
FASTENERS
FASTENING
HOISTING
HOISTS
JOINING
MATERIALS HANDLING
MATERIALS HANDLING EQUIPMENT
MECHANICAL STRUCTURES
NATURAL GAS WELLS
OIL WELLS
PIPES
PRODUCTION
SUPPORTS
WELL DRILLING
WELLS