Blow-out preventer lift system and method

Patent · Tue Dec 15 04:00:00 EST 1981

OSTI ID:5826029

Villines, D R

An apparatus for lifting a blow-out preventer during oil or gas drilling operations includes a base frame which can be manually positioned atop the rotary table of the drilling platform of the drilling rig used to drill the well. The apparatus further includes a pair of winches which can be lowered to preselected positions on the base frame, after positioning the base frame on the rotary table, and secured to the base frame via pins that extend through clevises that are welded to the base frame and through apertured lugs that are welded to the winches and extend into the clevises. The blow-out preventer is lifted by the winches via cables that are wrapped on reels of the winches and passed through the base frame and rotary table to the blow-out preventer to which the cables are attached. The base frame comprises a U-shaped portion and an end beam, attachable to the U-shaped portion at the open end therof via pins, to permit positioning of the base frame on the rotary table at such times that drill pipes and the like extend through the rotary table.

• Assignee: Power Lift Inc
• Patent Number(s): US 4305467
• OSTI ID: 5826029
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
BLOWOUT PREVENTERS
CABLES
DESIGN
DRILLING
DRILLING EQUIPMENT
DRILLS
EQUIPMENT
MATERIALS HANDLING EQUIPMENT
NATURAL GAS WELLS
OIL WELLS
ROTARY DRILLS
WELL DRILLING
WELLS
WINCHES