Deep penetration large-aperture perforating bullet

A technology of large aperture and perforating charges, which is applied in the fields of fluid production, wellbore/well components, and earth-moving drilling, etc., can solve the problem of not being able to form casing oil and gas well formations at the same time, and achieve high speed, broad development prospects, and improved The effect of power

Inactive Publication Date: 2012-05-02
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the further exploration and development of oilfields, more and more attention has been paid to high-penetration and large-aperture perforating bullets, and the demand for land and offshore oil fields is also increasing. Hole bombs cannot simultaneously form a large hole diameter on the casing and deep penetration into the formation of oil and gas wells

Method used

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  • Deep penetration large-aperture perforating bullet
  • Deep penetration large-aperture perforating bullet
  • Deep penetration large-aperture perforating bullet

Examples

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Embodiment Construction

[0015] Such as figure 1 As shown, the deep-penetrating large-aperture perforating charge assembly structure is composed of shell 1, charge 2, charge cover 3 and detonating device 4; as diagram 2-1 , 2-2 As shown, the outer drug-shaped cover is improved on the basis of the traditional metal powder double-cone drug-shaped cover, which is composed of an upper cover body 11 with a small cone angle and a lower cover body 12 with a large cone angle; Figure 3-1 , 3-2 As shown, in the truncated cone-shaped lower cover body 13 with holes in the inner layer, the cone angle of the medicine-shaped cover is β, the height is H4, the wall thickness is δ3, the central opening diameter is D8, the diameter of the upper end surface is D5, and the diameter of the lower end surface is D3. The shaped lower cover body 13 is embedded in the lower cover body 12 with a large cone angle to form a fit; the shell structure is as follows Pic 4-1 , 4-2 As shown, the shape of the shell is composed o...

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Abstract

The invention belongs to the field of oil production, and particularly relates to a deep penetration large-aperture perforating bullet which is composed of a casing, a charging portion, a metal powder composite chemical cover and a detonating device. The deep penetration large-aperture perforating bullet mainly solves the problem that a deep penetration perforating bullet and a large-aperture perforating bullet cannot form large apertures on sleeves simultaneously and the problem of deep penetration of an oil and gas well stratum. After the charging portion detonates, the metal powder composite chemical cover generates high-speed jet flow to fly to the end face of a perforating bullet hole. After the jet flow formed on the inner surface of the chemical cover penetrates through a center hole of a truncated-cone-shaped lower cover body, the high-speed jet flow which is good in continuity and even in diameter and has a certain velocity gradient is formed so as to carry out deep penetration to the oil and gas well stratum.

Description

technical field [0001] The invention belongs to the field of petroleum production, and in particular relates to a deep-penetrating large-aperture perforating bullet. technical background [0002] With the further exploration and development of oil fields, more and more attention has been paid to high-penetration and large-aperture perforating bullets, and the demand for land and offshore oil fields is also increasing. The hole bomb cannot simultaneously form a large hole diameter on the casing and a deep penetration of the formation of the oil and gas well. Contents of the invention [0003] The technical solution to be solved by the present invention is: the problem that the deep-penetrating perforating charge and the large-aperture perforating charge cannot form the large aperture on the casing and the deep penetration of the formation of the oil-gas well at the same time. [0004] The technical scheme adopted in the present invention is: a deep-penetrating large-aper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/119E21B43/116
Inventor 尹建平姚志华付璐王志军
Owner ZHONGBEI UNIV
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