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Marine drilling riser tensioning system

A tensioning system and offshore drilling technology, applied in the direction of drill pipe, drilling equipment, drill pipe, etc., can solve the problems of high production cost, low reliability, complex structure, etc., and achieve low production cost, reliable work, and large bearing capacity Effect

Inactive Publication Date: 2012-01-25
BAOJI PETROLEUM MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a marine drilling riser tensioning system, which solves the problems of complex structure, low reliability and high production cost in the prior art

Method used

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  • Marine drilling riser tensioning system
  • Marine drilling riser tensioning system
  • Marine drilling riser tensioning system

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Embodiment Construction

[0014] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0015] Such as figure 1 As shown, the structure of the marine drilling riser tensioning system of the present invention is that a plurality of tensioner assemblies 1 are respectively arranged around the floating drilling platform 13, and the energy accumulator 16 of each tensioner assembly 1 is The high-pressure pipeline 4 communicates with the high-pressure air system 5, the high-pressure pipeline 4 is provided with a control console 6, and the high-pressure air system 5 communicates with the standby high-pressure air system 8;

[0016] refer to figure 2 , image 3 , the structure of the tensioner assembly 1 includes a tensioning liquid cylinder 17, the upper and lower ends of the tensioning liquid cylinder 17 are respectively provided with an upper pulley block 14 and a lower pulley block 15, the lower pulley block 15 is fixed on the fix...

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Abstract

The invention discloses a marine drilling riser tensioning system which comprises a plurality of tensioner assemblies respectively arranged around a floating type drilling platform, wherein each tensioner assembly comprises a tensioning cylinder and an energy storage device, wherein the upper end and the lower end of the tensioning cylinder are respectively provided with an upper tackle block and a lower tackle block, the distance between the upper tackle block and the lower tackle block is changed with the flexibility of a piston; a lower cavity of the energy storage device is filled with a high-pressure liquid, an upper cavity of the energy storage device is filled with a high-pressure gas, the lower cavity of the energy storage device is communicated with a piston cavity of the tensioning cylinder, the upper cavity of the energy storage device is communicated with a high-pressure air system; and a steel rope sequentially bypasses through the upper tackle block and the lower tackle block and is connected with a connection device after guided by a guide pulley, and the connection device is connected with a tensioning ring hung on a riser system. The marine drilling riser tensioning system has the advantages of simple structure, convenience for control, reliability in control, low manufacture cost and large bearing capacity.

Description

technical field [0001] The invention belongs to the technical field of offshore oil drilling equipment, and relates to an ocean drilling riser tensioning system. Background technique [0002] In the process of marine deepwater oil and gas exploration and development, most of the offshore drilling platforms (ships) are used for drilling operations, and the offshore drilling riser system is the channel connecting the platform to the subsea underwater wellhead device. The drilling riser tensioning system is the marine drilling One of the important equipment in the system, in order to increase the rigidity of the riser, thereby enhancing the ability of the riser system to resist wind, waves, and currents, it is necessary to establish a constant top tension on the top of the riser; in addition, the offshore drilling platform (ship) in the wave Heave motions are generated under the action of the riser, if these motions are not compensated, it will directly lead to the failure of t...

Claims

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Application Information

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IPC IPC(8): E21B19/09
Inventor 任钢峰邓平牛敏孙传轩
Owner BAOJI PETROLEUM MASCH CO LTD
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