Circular shear device for coiled tubing four-flashboard blowout preventer

A technology of shearing device and four rams, which is applied in wellbore/well components, earthwork drilling, sealing/isolation, etc., can solve the problems of coiled tubing fluid output and not completely solve the incision, so as to improve oil production Efficiency or gas production efficiency, the effect of reducing resistance and improving efficiency

Active Publication Date: 2018-07-17
宋协翠
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above-mentioned utility model has improved the cutter, it still has not completely solved the problem of the incision, and still has an impact on the fluid output of the coiled tubing, which partially offsets the advantages of large and stable fluid output of the coiled tubing

Method used

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  • Circular shear device for coiled tubing four-flashboard blowout preventer
  • Circular shear device for coiled tubing four-flashboard blowout preventer
  • Circular shear device for coiled tubing four-flashboard blowout preventer

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Embodiment Construction

[0028] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, but not to limit the present invention.

[0029] Refer to the attached figure 1 , 2 And 3, a kind of circular shearing device for coiled tubing four-ram blowout preventer mentioned in the present invention, its technical scheme is: comprise hydraulic power equipment, ratchet thrust rod 9 and ratchet cutter equipment b1, described The hydraulic power equipment includes a hydraulic cylinder head 1, a cylinder block 2, a working piston 3, a connecting bolt 4, a transition connecting body 5, a pressure relief oil return port 10, and a hydraulic oil supply port 11, wherein the inner cavity of the cylinder block 2 is provided with The working piston 3 and the reciprocating force spring 14, the inner end of the working pisto...

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Abstract

The invention relates to a circular shear device for a coiled tubing four-flashboard blowout preventer. According to the technical scheme, the circular shear device for the coiled tubing four-flashboard blowout preventer comprises a hydraulic power device, a ratchet thrust stick and a ratchet cutter device. The hydraulic power device is movably connected with the ratchet thrust stick. The hydraulic power device forms circular motion in a rotating mode by the ratchet thrust stick hitting against the ratchet cutter device and simultaneously, a positive-rotating downward-propelling body is drivento move down by the accelerated speed of impacting and a negative-rotating upward-propelling body is driven to move up and then a cutter squeezes and cuts coiled tubing in the horizontal direction. Annular cutting of the coiled tubing is realized finally and a round cutting section is formed. The circular shear device for the coiled tubing four-flashboard blowout preventer has the beneficial effects that the cutting section of the coiled tubing is of a circular structure in the narrow space of a shear ram by remoulding the shear ram of the coiled tubing four-flashboard blowout preventer, thedeformation condition of an existing notch is avoided, and therefore the resistance of mining liquid or gas is reduced and the oil recovery efficiency or gas production efficiency is improved during operation.

Description

technical field [0001] The invention relates to a circular shearing device and an installation method, in particular to a circular shearing device used for a four-ram blowout preventer of a coiled oil pipe. Background technique [0002] With the continuous development of coiled tubing technology, the development and application of coiled tubing oil production or coalbed methane technology has been promoted. The existing coiled tubing has good flexibility, and a coil of coiled tubing is several kilometers long, which can replace conventional tubing for many operations. , Coiled tubing operation equipment has the characteristics of pressure operation, continuous lifting and lowering, small equipment volume, fast operation cycle and low cost, and is especially suitable for the exploitation of self-blowing wells. Among them, the coiled tubing four-ram blowout preventer plays an important role in the coiled tubing operation and belongs to the special wellhead blowout preventer. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/06
CPCE21B33/063
Inventor 宋协翠
Owner 宋协翠
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