Mast for handling a coiled tubing injector
AssigneeVarco/IP, Inc.
InventorsDavid W. McCulloch, Mike Xiaolei Lu
Life of this patent
Estimating the term…
Abstract
A mast for lifting and suspending over a wellhead a coiled tubing injector and blow out preventer is pivotally mounted on a rear portion of a truck. The mast has two side-by-side telescoping legs that extend and retract synchronously. When in a retracted position, the blow out preventer and coiled tubing injector are attached to the mast, between the legs, and legs of the mast extended to lift the equipment.
Claims40
A method for hoisting and positioning oilfield apparatus over a well head, comprising:
- coupling the oilfield apparatus to a mast having at least two telescoping load bearing arms prior to extending the at least two telescoping load bearing arms, each of the at least two telescoping load bearing arms being comprised of a plurality of co-axially aligned segments;
- lifting the oilfield apparatus through an action of synchronously extending the at least two telescoping arms;
- and
- pivoting the at least two telescoping load bearing arms to position the oilfield apparatus over the wellhead.
A method for hoisting oilfield apparatus over a well head, comprising;
- transporting the oilfield apparatus and a mast to well head on a vehicle, the mast having at least two telescoping load bearing arms pivotally mounted to the vehicle, each of the arms being comprised of a plurality of co-axially aligned segments;
- coupling the oilfield apparatus to the mast when the mast is in a retracted position;
- lifting the oilfield apparatus by an action of synchronously extending the at least two telescoping load bearing arms from the retracted position;
- and
- pivoting the at least two telescoping load bearing arms to position the oilfield apparatus over the wellhead.
Apparatus for hoisting oilfield apparatus over a well head, the apparatus comprising a mast assembly with at least two telescoping load bearing arms pivotably coupled to a support base, the plurality of arms each comprising a plurality of synchronously operable, coaxially aligned, telescoping segments for extending and retracting in unison, whereby oilfield apparatus mounted between the at least two arms may be lifted through an action of synchronously extending the at least two telescoping arms and positioned over a well head by pivoting the telescoping segments.
Apparatus for hoisting oilfield apparatus over a well head comprising a mast assembly with at least two telescoping load bearing arms coupled pivotably coupled to a base, the plurality of arms each comprising a plurality of synchronously operable, coaxially aligned, load bearing telescoping segments for extending and retracting in unison, the apparatus further including a mechanism coupled between the mast assembly and the mounting for pivoting the at least two telescoping arms, the mechanism for pivoting being limited in extension and coupled at one end to a moveable mounting, the movable mounting responsive to extension of the at least two telescoping arms.
Dependencies are inferred from the claim text.