Fracturing device used for oil-gas pipe column

A technology for oil and gas pipes and fracturing, which is applied to wellbore/well valve devices, production fluids, wellbore/well components, etc. It can solve the problems of large driving force and structural damage of sliding sleeves, and achieve easy assembly and convenient processing , the effect of improving the service life

Active Publication Date: 2017-03-29
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, at the moment when the shear nails are cut off, the fluid exerts a great force on the sliding sleeve, forcing the sliding sleeve to move rapidly to the position where the fracturing hole is opened.
During the rapid movement of the sliding sleeve, the sliding sleeve and the outer cylinder inevitably need to withstand severe friction and severe impact, resulting in serious damage to the structure of the two

Method used

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  • Fracturing device used for oil-gas pipe column
  • Fracturing device used for oil-gas pipe column
  • Fracturing device used for oil-gas pipe column

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with accompanying drawing.

[0026] figure 1 It is a half-sectional view of an embodiment of a fracturing device 10 for an oil and gas string according to the present invention. The so-called oil and gas string refers to a string used for oil and / or gas recovery. exist figure 1 In , the V direction represents the axial direction, the direction pointed by the arrow is the upstream direction, and the direction facing away from the arrow is the downstream direction.

[0027] Such as figure 1 As shown, the fracturing device 10 for an oil and gas string according to the present invention includes a cylindrical component 2 having a fracturing hole 22a. The cylindrical assembly 2 is connected in series in the oil and gas pipe string, and an inner cavity 5 distributed along the axial direction is defined inside the cylindrical assembly 2 .

[0028] exist figure 1 In the illustrated embodiment, the tubular...

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Abstract

The invention relates to a fracturing device used for an oil-gas pipe column. The device comprises a cylindrical assembly connected with the oil-gas pipe column in series and used for defining buffer space for receiving fluid in the oil-gas pipe column, a sliding sleeve fixedly arranged on the inner wall of the cylindrical assembly through a cutting unit and an actuating mechanism capable of pushing the sliding sleeve. When the actuating mechanism pushes the sliding sleeve to force the cutting unit to lose efficiency, the sliding sleeve enters the buffer space and performs buffer motion under the combined effect of the buffer space and the fluid. The fracturing device used for the oil-gas pipe column has following beneficial effects: due to the fact that the e fracturing device used for the oil-gas pipe column can timely buffer movement of the sliding sleeve, friction loss and collision damage to the sliding sleeve, an outer cylinder and related parts can be greatly reduced so that service life of the fracturing device is prolonged.

Description

technical field [0001] The invention belongs to the technical field of oil and gas resource exploitation, and in particular relates to a fracturing device for oil and gas pipe strings. Background technique [0002] As one of the important devices for the exploitation of unconventional oil and gas resources, fracturing devices are widely used in various oil and gas wells. In other words, people can use fracturing devices to implement fracturing technology on oil-bearing formation geology, thereby increasing the production of oil and gas wells. [0003] The existing fracturing device comprises an outer cylinder with a fracturing hole, a sliding sleeve fixed in the outer cylinder by shear pins, and a ball seat arranged in the sliding sleeve. When the pressure-suppressing ball falls into the ball seat, the fluid in the oil and gas pipe string will force the sliding sleeve to cut the shear nails under the blocking action of the pressure-suppressing ball and the ball seat, so tha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/26E21B34/14
Inventor 吴晋霞朱和明马兰荣张瑞朱玉杰薛占峰
Owner CHINA PETROLEUM & CHEM CORP
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