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Through tubing perforating bullet case and through tubing perforating bullet

A technology of perforating shells and perforating bullets, applied in the field of perforating bullets, can solve the problems of easy deformation and high processing precision requirements, and achieve the effects of convenient processing, high assembly precision and fast installation

Active Publication Date: 2013-09-11
宁波宇恒能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the perforating bullets assembled from the perforating bullet casings need to be equipped with a perforating gun, and the processing accuracy of the small head groove on the head of the perforating bullet casing is very high, and due to the structure of the head, it is easy to deform during processing

Method used

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  • Through tubing perforating bullet case and through tubing perforating bullet
  • Through tubing perforating bullet case and through tubing perforating bullet
  • Through tubing perforating bullet case and through tubing perforating bullet

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Embodiment 1: The casing of the perforating bullet through the tubing of this embodiment is as follows figure 1 , 2 , 3, 4, and 5, including perforating bullet casing 1 and perforating bullet cap 2, perforating bullet casing 1 and perforating bullet cap 2 are fastened together, and O Type sealing ring 1-6.

[0025] The opening end of the perforating bullet cap 2 is provided with a neck-shaped shell fastening part 2-3, and an annular elastic inner concave part 2-3-1 is pressed on the bullet case fastening part 2-3, and the inner concave part 2-3- The outer wall of 1 is concave inward to form a groove, the inner wall of the inner concave part 2-3-1 is convex inward to form a convex ring, and the outer wall of the opening end of the perforating cartridge case 1 is provided with a trapezoidal ring-shaped buckle cap 1-5 , the bullet cap fastening portion 1-5 is formed with a slot for installing a sealing ring, and an O-shaped sealing ring 1-6 is installed in the hole, and...

Embodiment 2

[0028] Embodiment 2: The casing of the perforating bullet through the tubing of this embodiment is as follows Figure 6 As shown, the perforating cartridge case 1 is made of 40CR material, and an inner cover 3 is provided on the wall of the inner cavity of the perforating cartridge case 1. The inner cover 3 is made of ZN material, and the inner cover 3 is closely attached to the perforating cartridge case 1. On the cavity wall of the inner cavity, the surface roughness of the joint between the cavity wall of the perforating cartridge casing 1 and the outer surface of the inner cover 3 is Ra6.3-12.5. Other technical features are the same as the perforating cartridge case 1 through the tubing of Embodiment 1.

[0029] The tubing perforating charge in this embodiment includes a tubing perforating charge casing, the inner cavity of the perforating bullet casing 1 is equipped with a liner cover 5 , and the inner cavity wall of the perforating case 1 and the liner cover 5 are press-...

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Abstract

The invention discloses a through tubing perforating bullet case and a through tubing perforating bullet. The through tubing perforating bullet case comprises a perforating bullet case part and a perforating bullet cap which are connected in a buckling manner, wherein the perforating bullet case part comprises a perforating bullet case body with an inner cavity; a raised detonating cord mounting part is arranged on the end face of one end of the perforating bullet case body; a detonating cord hole used for mounting a detonating cord is formed in the side surface of the detonating cord mounting part; a detonating explosive hole is formed in a wall, positioned under the detonating cord hole, of the inner cavity of the perforating bullet case body; the perforating bullet cap comprises a perforating bullet cap body with an inner cavity; a raised external thread part is arranged at one end of the perforating bullet cap body; a jet channel is arranged in the external thread part; one end of the jet channel is closed; and the other end of the jet channel is communicated with the inner cavity of the perforating bullet cap body. The through tubing perforating bullet case and the through tubing perforating bullet are not required to be matched with a perforating gun, and are convenient to process, quick to mount, and higher in assembling precision.

Description

[0001] technical field [0002] The invention relates to the field of perforating bullets, in particular to a casing of a perforating bullet passing through an oil pipe and the perforating bullet. Background technique [0003] The Chinese patent with the application number 200920243436.8 discloses a perforating charge for oil and gas wells with high hole density and deep penetration of the perforator, including a shell and a liner. The perforating end of the shell is composed of a cylindrical section, a small cone section and a large cone section. The diameter of the cylindrical section is 9mm-12mm, the taper of the small cone section is 125°-140°, and the taper of the large cone section is 45°-55°; The body cavity and cylindrical cavity are formed, the taper of the small cone cavity is 90°-110°, the taper of the large cone cavity is 42°-50°, and the diameter of the cylindrical cavity is 46mm-50mm. However, the perforating bullets assembled from the perforating bullet casin...

Claims

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Application Information

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IPC IPC(8): E21B43/119E21B43/116
Inventor 王志潮苏华
Owner 宁波宇恒能源科技有限公司
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