Multipurpose cantilever skidding frame
First Claim
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1. A cantilever skidding frame for a mobile platform, the frame comprising:
- a first frame structure comprising a first aft corner structure, a first forward corner structure, and a longitudinal skidding foundation structure coupling the first aft and first forward corner structures;
a second frame structure comprising a second aft corner structure, a second forward corner structure, and a longitudinal skidding foundation structure coupling the second aft and second forward corner structures;
two beams connecting the first and second frame structures to form a rigid skidding frame;
transverse skidding driving mechanisms fixedly connected to each aft and forward corner structures of the first and second frame structures; and
longitudinal skidding driving mechanisms fixedly connected to one of the forward or aft corners of each first and second frame structures,wherein the rigid skidding frame is disposed on parallel transverse skidding tracks,wherein longitudinal movement of a cantilever disposed on the rigid skidding frame is effected by operation of the longitudinal skidding driving mechanisms, andwherein transverse movement of the cantilever disposed on the rigid skidding frame over the parallel transverse skidding tracks is effected by operation of the transverse skidding mechanisms and wherein the rigid skidding frame is fixed in the longitudinal direction.
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Abstract
The present subject matter provides a multipurpose cantilever skidding frame having a first frame structure, a second frame structure and two connection beams integrally forming a rigid structure to provide longitudinal and lateral movement for an exemplary cantilever. The present subject matter also provides a drilling rig that enables a cantilever to be moved in both longitudinal and transverse directions.
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Citations
25 Claims
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1. A cantilever skidding frame for a mobile platform, the frame comprising:
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a first frame structure comprising a first aft corner structure, a first forward corner structure, and a longitudinal skidding foundation structure coupling the first aft and first forward corner structures; a second frame structure comprising a second aft corner structure, a second forward corner structure, and a longitudinal skidding foundation structure coupling the second aft and second forward corner structures; two beams connecting the first and second frame structures to form a rigid skidding frame; transverse skidding driving mechanisms fixedly connected to each aft and forward corner structures of the first and second frame structures; and longitudinal skidding driving mechanisms fixedly connected to one of the forward or aft corners of each first and second frame structures, wherein the rigid skidding frame is disposed on parallel transverse skidding tracks, wherein longitudinal movement of a cantilever disposed on the rigid skidding frame is effected by operation of the longitudinal skidding driving mechanisms, and wherein transverse movement of the cantilever disposed on the rigid skidding frame over the parallel transverse skidding tracks is effected by operation of the transverse skidding mechanisms and wherein the rigid skidding frame is fixed in the longitudinal direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A drilling rig comprising:
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a rig platform; parallel transverse skidding tracks secured on the rig platform; a cantilever skidding frame slidably disposed on the parallel transverse skidding tracks, the cantilever skidding frame comprising; a first frame structure having a first aft corner structure, a first forward corner structure, and a longitudinal skidding foundation structure coupling the first aft and first forward corner structures, a second frame structure having an second aft corner structure, a second forward corner structure, and a longitudinal skidding foundation structure coupling the second aft and second forward corner structures, two beams connecting the first and second frame structures, transverse skidding driving mechanisms connected to each aft and forward corner structures of the first and second frame structures, and longitudinal skidding driving mechanisms connected to one of the forward or aft corner structures of the first and second frame structures; a cantilever slidably disposed on the cantilever skidding frame; and a drilling module disposed on the cantilever, wherein longitudinal movement of the cantilever over the aft and forward corner structures of the first and second frame structures is imparted by operation of the longitudinal skidding driving mechanisms, and wherein transverse movement of the cantilever over the parallel transverse skidding tracks is imparted by operation of the transverse skidding mechanisms and wherein the cantilever skidding frame is fixed in the longitudinal direction. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. An offshore drilling system comprising:
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a Jackup platform with a Jackup deck; and a Jackup drilling unit comprising; parallel aft and forward transverse skidding rails each secured on the Jackup deck; a cantilever skidding frame slidably disposed on the parallel transverse skidding rails, the cantilever skidding frame comprising; a first frame structure having an first aft corner structure, a first forward corner structure, and a longitudinal skidding foundation structure coupling the first aft and first forward corner structures, a second frame structure having a second aft corner structure, a second forward corner structure, and a longitudinal skidding foundation structure coupling the second aft and second forward corner structures, two beams connecting the first and second frame structures, transverse skidding driving mechanisms connected to each aft and forward corner structures of the first and second frame structures, and longitudinal skidding driving mechanisms connected to one of the forward or aft corner structures of the first and second frame structures; a cantilever slidably disposed on the cantilever skidding frame; and a drilling module disposed on the cantilever, wherein longitudinal movement of the cantilever over the aft and forward corner structures of the first and second frame structures is imparted by operation of the longitudinal skidding driving mechanisms, and wherein transverse movement of the cantilever over the parallel transverse skidding tracks is imparted by operation of the transverse skidding mechanisms and wherein the cantilever skidding frame is fixed in the longitudinal direction. - View Dependent Claims (23, 24, 25)
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Specification