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Anti-spraying device for while drilling

A blowout prevention device and drilling-while-drilling technology, which is applied to wellbore/well valve devices, earthwork drilling, wellbore/well components, etc., can solve problems such as improper operation by operators, blowout accidents, occurrences, etc., and avoid operation The effect of improper, good sealing effect

Pending Publication Date: 2018-12-11
SICHUAN KUNLUN GASOLINEEUM EQUIP MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a blowout preventer while drilling to solve the problem that the existing blowout preventer needs to be manually operated, and the operator may cause a blowout accident due to improper operation or untimely operation

Method used

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  • Anti-spraying device for while drilling
  • Anti-spraying device for while drilling
  • Anti-spraying device for while drilling

Examples

Experimental program
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Effect test

Embodiment

[0037] Please refer to figure 1 - image 3 , the BOP while drilling device 200 includes a connecting cylinder 210, one end of the connecting cylinder 210 communicates with the drilling fluid pipe, and the other end is threadedly connected with the drill pipe joint 290, which is used to connect the drill string, and the drill pipe joint 290 passes O-shaped The ring is in sealing fit with the connecting cylinder 210. The outer wall of the connecting barrel 210 is provided with a rubber barrel 220 , and the two ends of the glue barrel 220 are in sealing connection with the outer wall of the connecting barrel 210 . A sliding sleeve 230 is provided on the inner side wall of the connecting cylinder 210 , and the sliding sleeve 230 can be slidably matched with the inner side wall of the connecting cylinder 210 . The inner side wall of the sliding sleeve 230 is provided with a self-control valve 250 , which can be automatically opened or closed according to the pressure change, and ...

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Abstract

The invention discloses an anti-spraying device for while drilling, belonging to the technical field of drilling tools for petroleum and gas exploitation. The device comprises a connection drum, the outer side wall of which is equipped with a rubber barrel. A sliding sleeve is arranged on the inner side wall of the connection drum and connected with the connection drum through a first spacing part. The inner side wall of the connection drum is in sealing fit with the sliding sleeve through sealing parts. An inner cavity of the sliding sleeve is equipped with an automatic control valve. At least one first through hole is arranged in the sliding sleeve. The connection drum is equipped with at least one second through hole located between the sealing parts. Each second through hole and each first through hole are staggered from a sealing part. Each second through hole is close to one side where a drilling fluid pipe is located. When well kick happens under the shaft, passages where fluidsflow out of an inner cavity of a drilling column and an outer ring cavity of the drilling column are timely intercepted. Therefore, manual operation by operation staff is not needed. Accordingly, anblowout accident caused by mis-operation or untimely operation is avoided.

Description

technical field [0001] The invention relates to the technical field of drilling tools for oil and gas exploration, in particular to a blowout prevention device while drilling. Background technique [0002] In the exploration and development of oil and gas, people cannot accurately predict the fluid pressure in the formation to be drilled, so that the construction hides huge risks. Once the formation fluid (oil, gas, water) is out of control, it will lead to blowout out of control, resulting in drilling failure. Equipment damage endangers the safety of drilling personnel, destroys oil and gas resources, pollutes the natural environment, and leads to serious consequences such as the scrapping of oil and gas wells. [0003] The key to preventing blowout is to detect and control the overflow in time, and to be able to respond quickly and play a role. The blowout preventer is an essential safety facility in the oil drilling process. At present, the main blowout preventer equipme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/128E21B34/08E21B21/08
CPCE21B21/08E21B33/1285E21B34/08
Inventor 黄广周克振张帅王翌张茗奎陈佳伟
Owner SICHUAN KUNLUN GASOLINEEUM EQUIP MFG
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