Special perforating gun for fracturing, special FracGun composite perforating device and method for fracturing

A composite perforating and perforating gun technology, which is applied in earthwork drilling, wellbore/well components, and production fluids, etc., can solve the problems of high-pressure operation costs and potential safety hazards, and achieve safety assurance, high cost, and Difficult to manage effects

Active Publication Date: 2017-05-10
XIAN TONGYUAN PETROTECH
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of higher high-pressure operation cost and greater safety hazards in fracturing in the existing perforating technology in the background technology, the present invention provides a special perforating gun for fracturing, a FracGun composite perforating device and method for fracturing

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  • Special perforating gun for fracturing, special FracGun composite perforating device and method for fracturing
  • Special perforating gun for fracturing, special FracGun composite perforating device and method for fracturing

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Embodiment Construction

[0031] Such as figure 1 As shown, the present invention provides a special perforating gun for fracturing. The perforating gun includes a gun body 1, a positioning ring 2, a bullet holder tube 3, a gun tail 4, a detonating cord 5, a fracturing powder 6, and a perforating gun. Ammo 7 and gun head 8;

[0032] The improvements of this perforating gun are:

[0033] At least two perforating charges 7 are installed on each phase of the bullet holder tube 3; each phase of the gun body 1 is provided with blind holes corresponding to the perforating charges 7 one by one.

[0034] Wherein at least 2 perforating charges on each phase are arranged side by side along the axial direction of the carrier tube or along the radial direction of the carrier tube, and when working downhole, a 1m-long formation in the same direction is required, The number of holes in the perforating charge does not exceed 16. If it is larger than this number, the perforating gun will be deformed after perforatio...

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Abstract

The invention particularly relates to a special perforating gun for fracturing, a special FracGun composite perforating device and method for fracturing. The improvement of the perforating gun is as follows: at least two perforating bullets (7) are mounted in each phase position in a gun carrier tube (3); blind holes (9) in one-to-one correspondence to the perforating bullets (7) are formed in each phase position of a gun body (1). Meanwhile, the invention further provides the special FracGun composite perforating device using the pressure of the perforating gun and a fracturing method thereof. By virtue of the invention, not only is the cost of a high-pressure operation during fracturing lowered, but also the safety is further guaranteed.

Description

technical field [0001] The invention belongs to the field of oil and gas exploration and development, in particular to a special perforating gun for fracturing, a FracGun composite perforating device and method for fracturing. Background technique [0002] As the development of oil and gas fields enters the later stage, the use of perforation completion can no longer meet the needs of oilfield production capacity development. Fracturing completion has increasingly become the main way of oilfield development, and perforation has gradually become the pretreatment of fracturing completion. [0003] However, due to the rotating distribution of the cartridge holes in the traditional perforator, the distance between two holes in the same phase is relatively large. When fracturing, the pressure can only be large enough to exceed the fracture pressure of the bottom layer to generate fractures. As a result, the wellhead pressure is often very high. On the one hand, the cost of the op...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/117E21B43/114E21B43/119E21B43/267
CPCE21B43/114E21B43/117E21B43/119E21B43/267
Inventor 张国桉姚志中孙宪宏
Owner XIAN TONGYUAN PETROTECH
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