A rotating split riser tensioning ring

Abstract

The invention discloses a rotation split type tensioning ring of a marine riser. The rotation split type tensioning ring of the marine riser is of a symmetrical two-half structure. For each half structure, two upright boards are located on the tangential sections of the two ends of the circumference of an outer peripheral vertical board, and a plurality of lifting rings III are arranged along the circumference of the outer peripheral vertical board; a plurality of sets of wing boards are connected between the outer peripheral vertical board and an inner peripheral vertical board; a bearing base is installed in an inner circle of the inner peripheral vertical board in a sleeved mode, and a thrust bearing is installed between the bearing base and a bearing compression ring; a pressure-bearing ring and a compressing ring are connected to the upper surface of the bearing compression ring in a pressing mode, an outer barrel is sleeved with the pressure-bearing ring and an inner circle through hole of the bearing compression ring, an inner barrel is sleeved with the outer barrel, a check ring is arranged between the pressure-bearing ring and the outer barrel, the check ring and the outer barrel are connected in a threaded and sleeved mode, and the outer end face of the pressure-bearing ring is connected with a flange. The rotation split type tensioning ring of the marine riser is of a rotation split type structure and is used in cooperation with a tensioner and a telescopic device of the marine riser, so that tensioning of a marine riser system is achieved, and the weight of the marine riser system is borne.

Description

technical field [0001] The invention belongs to the technical field of petroleum and natural gas equipment, and relates to a rotating split water riser tension ring. Background technique [0002] When conducting offshore oil and gas drilling, a set of liquid delivery pipelines is required, that is, the offshore drilling riser system, which extends from the floating drilling platform to the underwater BOP, which is mainly used to circulate drilling fluid. When the riser is working, the bottom of the riser system must maintain a certain tension to ensure the rigidity of the riser, so as to avoid damage to the bottom riser assembly and the lower flexible joint of the riser due to the pressure on the bottom of the riser system. Therefore, it is necessary to use the riser tensioner to provide the top tension force for the riser system, and the riser tensioner is the key load-bearing equipment connecting the riser tensioner and the riser expansion device. Its technical characteris...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a rotating split riser tensioning ring, which solves the problems of complex structure, cumbersome connection and disassembly operations, and insufficient work efficiency and safety in the prior art

Images