Standing pipe rack back system
AssigneeGoliath Snubbing Ltd.
InventorTrevor Sopracolle
Life of this patent
Estimating the term…
Abstract
A manipulable elevator system for jointed tubulars on a service, work-over or completion rig which moves the elevator and any tubing grasped by the elevator away from (or toward) the centre-line of a wellbore being served by the rig is provided which permits use of a vertical pipe racking without the need for a rig worker to man the monkey-board, especially useful to provide for safe vertical pipe-racking for pressure-controlled or snubbing rig environments, and saving operational time and expediting turnaround back to production, while maintaining operational safety; the elevator's maneuvering controlled remotely, typically powered hydraulically.
Claims5
A manipulable elevator system for rig operations on a well to facilitate vertical racking of jointed tubulars, the system comprising:
- (a) an elevator configured to grasp or release jointed tubulars;
- (b) means to move the elevator and a bottom end of any grasped tubular toward or away from vertical alignment with a center line of the well;
- and
- (c) a control mechanism to control grasp/release operation of the elevator and the movement of the elevator in relation to vertical alignment with the center line of the well;
- wherein the means to move the elevator and the bottom end of any grasped tubular toward or away from vertical alignment with the center line of the well comprises:
- (d) a draw-works with winch, cable/tackle, an upper block and a travelling block suspended by the cable/tackle, and the elevator suspended from and below the travelling block by two bails;
- (e) wherein each bail comprises an eye or fastener at an upper end of the bail, a middle elongated body, and a lower eye or fastener at a lower end of the bail;
- (f) wherein the travelling block has a connector for the eye or fastener at the upper end of each bail, at or near each side of a lower end of the travelling block, for receiving the eye or fastener at the upper end of each respective bail;
- (g) wherein the elevator is suspended from and attached to the lower eye or fastener of each respective bail;
- (h) wherein at or near each connector of the travelling block for the eye or fasterner of a each respective bail is an off-set device, attached to the connector or to the travelling block on one side of the off-set device, and carrying a hinge-point on another side of the off-set device, the hinge-point being off-set vertically from a centre of gravity of the travelling block;
- (i) wherein to each hinge-point of each off-set device is hingedly attached an upper end of a jack;
- (j) wherein a lower end of each jack is attached to the middle elongated body of each respective bail, each jack being attached to its each respective bail at about the same point on the elongated body of each respective bail;
- (k) the control mechanism configured to remotely operate and power the jacks to extend or retract, to cause movement of the suspended elevator and the bottom end of any grasped tubular away from or toward vertical alignment with the center line of the well;
- and
- the elevator system having an added tubing capture-guide comprising a trough, spoon or v-shaped guide mounted on or near the travelling block at about the same level as the lower end of the travelling block and about level with the upper eyes of the bails, to guide an upper end of a joint or double joint of a jointed tubular toward and into the elevator when the elevator is used to pick up tubing from a vertical rack near to but offset from the center line of the well.
Dependencies are inferred from the claim text.