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Axial sliding type marine riser cleaning device

A technology of axial sliding and cleaning devices, which is applied in the direction of cleaning tools, wellbore/well parts, earthwork drilling and production, etc., can solve the problems of drilling operation time and cost waste, and achieve low cost, good economic benefits and promotion significance. The effect of high work efficiency

Inactive Publication Date: 2015-12-02
YANGTZE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it takes two to three days to take away these solidified and sticky fluids by relying on pump pressure, which causes a large waste of time and cost for drilling operations

Method used

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  • Axial sliding type marine riser cleaning device
  • Axial sliding type marine riser cleaning device
  • Axial sliding type marine riser cleaning device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The axially sliding riser cleaning device includes a center pipe 1 and a sleeve 2; six center pipe chutes 3 are evenly distributed on the circumference of one side of the center pipe 1 . A flange 6 is arranged on the port at one end of the sleeve 2 , and a sleeve rib 7 is arranged on the circumference of the sleeve 2 on one side of the flange 6 corresponding to the center pipe chute 3 . The sleeve 2 is slidably installed on the central tube 1 through the cooperation of the sleeve edge 7 and the central tube chute 3 . An annular cleaning brush 9 is installed on the sleeve 2 between the flange 6 and the sleeve edge 7 through a fixing ring 8;

[0018] The central pipe runner 3 of the central pipe 1 is respectively provided with a central pipe runner groove 10, and the sleeve edge 7 of the sleeve 2 is respectively provided with a sleeve runner mouth 11, and the sleeve runner mouth 11 is connected with the central pipe runner groove 10. Swipe to connect. A spacer 5 is inst...

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PUM

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Abstract

The invention relates to an axial sliding type marine riser cleaning device, and belongs to the field of downhole tools for an offshore oil and gas well. The cleaning device comprises a central pipe and a sleeve, wherein central pipe sliding chutes are uniformly distributed on the central pipe, the sleeve is glidingly mounted on the central pipe, and a cleaning brush is mounted on the sleeve through a fixing ring; central pipe channel slots are formed in the central pipe sliding chutes of the central pipe, and sleeve channel ports are formed in the sleeve and glidingly communicated with the central pipe channel slots. The cleaning device is simple in structure, convenient to dismount, mount and maintain and high in safety performance, and the problems of low efficiency, incomplete cleaning and high probability of damage to the inner wall of a marine riser caused by a traditional method for cleaning solidified and adhered fluids in the marine riser are solved. The cleaning brush can be prevented from damaging the inner wall of the marine riser in a working process, and the axial sliding type marine riser cleaning device has good economic benefits and popularization significance.

Description

technical field [0001] The invention relates to an axially sliding water riser cleaning device, which belongs to the field of downhole tools for offshore oil and gas wells. Background technique [0002] The marine drilling riser system extends from the drilling platform to the underwater blowout preventer, forming a circulation channel for drilling fluid. Its main function is to isolate seawater, support various control pipelines such as choke and kill pipelines, drilling fluid replenishment pipelines, hydraulic transmission pipelines, hoist underwater blowout preventers, and provide guidance for the smooth running of drill pipes and drilling tools into the wellhead. [0003] Drilling riser is an important but weak link in the whole offshore drilling equipment, and it is the "bottleneck" of offshore oil exploration and development, which has the characteristics of high technology, high investment and high risk. Although the structure of the riser is simple, due to the compl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B37/02
Inventor 刘少胡张益维
Owner YANGTZE UNIVERSITY
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