System for repositioning a coiled tubing tensioner
AssigneeRRI Holdings, Inc.
InventorTommie C. Gipson
Life of this patent
Estimating the term…
Abstract
A system for positioning a trailer mounted coiled tubing tensioner either in a first stowed position on the deck of a transport trailer or in a second position resting on an elevated rig floor of a drilling rig is described. The system for selectably elevating a coiled tubing tensioner from its first stowed position to its second position on the rig floor of a drilling rig includes the cooperative operation of the coiled tubing tensioner and its frame, multiple pivotable swing arms attached to the trailer at one end and the tensioner frame at the other end, an elevatable mast, a crown block, a drawworks winch, a top drive, a pair of tensioner lifting winches and multiple lifting lines deployed from the mast and reeved through sheaves mounted on the tensioner frame and the top drive.
Claims21
A system for positioning a coiled tubing tensioner, the system comprising:
- (a) a coiled tubing tensioner wheel mounting a coiled tubing hold-down assembly;
- (b) a tensioner frame rotatably mounting the coiled tubing tensioner wheel, a plurality of pivotable swing arms, and a pair of tensioner frame lifting sheaves;
- (c) an elevatable mast mounting a crown block, a drawworks winch, and a pair of tensioner lifting winches;
- (d) a plurality of top drive lifting lines, each line having a first end attached to the drawworks winch and a second end attached to a top drive and wherein the top drive lifting lines pass over the crown block;
- and
- (e) a pair of tensioner lifting lines, wherein each tensioner lifting line has a first end attached to one of the tensioner lifting winches and a second end attached to the top drive, wherein each tensioner lifting line has a length sufficient to be reeved through one of the tensioner frame lifting sheaves and a tensioner lift line turning sheave mounted on the top drive.
A system for positioning a coiled tubing tensioner, the system comprising:
- (a) a coiled tubing tensioner wheel mounting a coiled tubing hold-down assembly;
- (b) a tensioner frame rotatably mounting the coiled tubing tensioner wheel and a pair of tensioner frame lifting sheaves;
- (c) a plurality of hinged swing arms, wherein the swing arms are attached at a first end to the tensioner frame and at a second end to a trailer bed and wherein the tensioner frame is selectably moved from a first position resting the tensioner frame on the trailer bed to a second position resting a first end of the tensioner frame on a rig floor as the swing arms pivot from a first position to a second position;
- (d) an elevatable mast having two parallel side panels, a crown block mounted on a top end of the mast, a drawworks winch mounted on a front side of the mast, and a pair of tensioner lifting winches mounted on opposed sides of a back side of the mast;
- (e) a plurality of top drive lifting lines having a first end attached to the drawworks winch and a second end attached to a top drive, wherein the top drive lifting lines pass over the crown block;
- and
- (f) a pair of tensioner lifting lines, wherein each tensioner lifting line has a first end attached to one of the tensioner lifting winches and a second end attached to the top drive, wherein each tensioner lifting line has a length sufficient to be reeved through one of the tensioner frame lifting sheaves and a tensioner lift line turning sheave mounted on the top drive.
A method for raising a coiled tubing tensioner from a trailer bed to a rig floor, the method including the steps of:
- (a) placing a trailer mounted coiled tubing tensioner positioning system in close proximity to a well head, wherein the positioning system includes
- (i) a coiled tubing tensioner wheel mounting a coiled tubing hold-down assembly;
- (ii) a tensioner frame rotatably mounting the coiled tubing tensioner wheel, a plurality of pivotable swing arms, and a pair of tensioner frame lifting sheaves;
- (iii) an elevatable mast mounting a crown block, a drawworks winch, and a pair of tensioner lifting winches;
- (iv) a rotatable coiled tubing storage reel having a length of coiled tubing wound around the storage reel;
- (iv) a plurality of top drive lifting lines, each line having a first end attached to the drawworks winch and a second end attached to a top drive and wherein the top drive lifting lines pass over the crown block;
- and
- (v) a pair of tensioner lifting lines, wherein each tensioner lifting line has a first end attached to one of the tensioner lifting winches and a second end attached to the top drive, wherein each tensioner lifting line is reeved through one of the tensioner frame lifting sheaves and a tensioner lift line turning sheave mounted on the top drive;
- (b) preventing the rotation of the tensioner by engaging the coiled tubing hold-down assembly;
- (c) permitting free rotation of the coiled tubing storage reel;
- (d) engaging the tensioner lifting winches to act on the tensioner lifting lines to pivot the swing arms into a substantially vertical position;
- and
- (e) lowering the tensioner slowly so that a front portion of the tensioner frame is resting on the rig floor.
Dependencies are inferred from the claim text.