CANTILEVER SKIDDING SYSTEM ON A DRILLING RIG
First Claim
1. A drilling rig comprising:
- a platform having a pair of substantially parallel transverse members near an edge thereof;
a cantilever mountable on the platform, said cantilever having a pair of substantially longitudinal members along the length of the cantilever, said longitudinal members are substantially orthogonal to the pair of transverse members; and
a sliding and swivel assembly connecting the longitudinal and transverse members at each interposition of said longitudinal and transverse members, wherein each sliding/swivel assembly comprises an upper sliding block, a lower sliding block and a swivel member interconnecting the upper and lower sliding blocks, such that the sliding/swivel assembly is moveable relatively on the relevant longitudinal or transverse member to translate and/or rotate the cantilever with respect to the platform.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention provides an improved cantilever (10) for skidding on a platform (30) of a drilling rig. The cantilever (10) has two longitudinal members (12) whilst an edge (32) of the platform (30) has two transverse members (14,14a). The longitudinal and transverse members are connected at each interposition by a sliding and swivel assembly (20, 20a, . . . 20d). Each sliding/swivel assembly (20, 20a . . . 20d) is connected by an actuator (24, 24a) to the longitudinal or transverse member so that the cantilever (10) is operable to be displaced on the platform (30) by translation, rotation or a combination of translation and rotation.
30 Citations
28 Claims
-
1. A drilling rig comprising:
-
a platform having a pair of substantially parallel transverse members near an edge thereof; a cantilever mountable on the platform, said cantilever having a pair of substantially longitudinal members along the length of the cantilever, said longitudinal members are substantially orthogonal to the pair of transverse members; and a sliding and swivel assembly connecting the longitudinal and transverse members at each interposition of said longitudinal and transverse members, wherein each sliding/swivel assembly comprises an upper sliding block, a lower sliding block and a swivel member interconnecting the upper and lower sliding blocks, such that the sliding/swivel assembly is moveable relatively on the relevant longitudinal or transverse member to translate and/or rotate the cantilever with respect to the platform. - View Dependent Claims (2, 3, 4, 6, 7, 9, 10, 12)
-
-
5. (canceled)
-
8. (canceled)
-
11. (canceled)
-
13. A method of displacing a cantilever on platform of a drilling rig, said method comprising:
-
disposing said cantilever on said platform, with said cantilever having two substantially parallel members along the cantilever'"'"'s longitudinal dimension; disposing two substantially parallel transverse members near an edge of said platform; interconnecting said longitudinal and transverse members by a sliding and swivel assembly at each interposition, wherein each sliding/swivel assembly comprises an upper sliding block, a lower sliding block and a swivel member interconnecting the upper and lower sliding blocks; and connecting an actuator between each sliding/swivel assembly and said associated longitudinal/transverse member, wherein said actuator is or actuators are operable to translate and/or rotate said cantilever with respect to said platform. - View Dependent Claims (15, 16, 18, 20, 21, 22, 23, 24, 26, 27)
-
-
14. (canceled)
-
17. (canceled)
-
19. (canceled)
-
25. (canceled)
-
28. (canceled)
Specification