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Gun perforation block cap of oil well perforator and producing method thereof

A perforator and hole plugging technology, which is applied in the direction of bonding method, earthwork drilling, wellbore/well parts, etc., can solve the problems of poor perforation effect, etc., and achieve improved perforation effect, high hardness, and effective increase The effect of pressure-bearing area

Inactive Publication Date: 2009-05-20
冯锋
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an improved perforation plug for oil well perforators and its production method in view of the poor perforation effect of the existing perforation plug

Method used

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  • Gun perforation block cap of oil well perforator and producing method thereof
  • Gun perforation block cap of oil well perforator and producing method thereof
  • Gun perforation block cap of oil well perforator and producing method thereof

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Embodiment Construction

[0022] Referring to Figures 1 and 2, it has a ceramic disc 1 matching the perforation aperture, and a rubber sealing layer molded by rubber vulcanization hot molding is provided on the upper end surface, the outer circumference and the outer ring of the bottom surface of the disc. 2, wherein the rubber sealing layer 2-1 on the upper end surface of the disc is in the shape of a molded cover, and is located on the outer circumference of the disc 2-2 and as figure 2 The shown bottom outer ring 2-3 is a vulcanized rubber thin layer molded. The rubber sealing layer 2 can make the perforation plug have good sealing performance.

[0023] see figure 2 , the production steps of this perforation plugging cover are as follows:

[0024] 1. Dry pressing with a mold to make a ceramic disc blank;

[0025] 2. Sinter the ceramic disc blanks into ceramic discs;

[0026] 3. Use the siphon method to detect the surface cracks and internal dark cracks of the ceramic sheet. If there are cracks...

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Abstract

The invention relates to a ceramic perforation blanking cover of an oil well perforator and a production method thereof. The improvement of the invention is that a metal wafer in the existing perforation blanking cover is replaced with a ceramic part by utilizing the characteristics of ceramic of good bursting performance, easy frangibility, high hardness and the like so that the perforation blanking cover bursts into a large number of fragments in a perforation, the particles of the ceramic fragments are small, the hardness is high, and the capacity of penetrating rock strata and the penetrating area are greatly improved so as to lead the perforation effect to be greatly improved. The production method is characterized in that the grinding procedures of ceramic wafers are increased so that the ceramic wafers are ground to be level in the process and the effective pressure bearing area in vulcanization is enlarged, meanwhile, certain roughness of the surface is ensured in grinding so that the ceramic wafers are not crushed and can be stuck fixedly in the subsequent rubber vulcanization hot moulding process. Therefore, the problem that the blanking cover is easy to be crushed in vulcanization moulding process is solved, the yield is greatly improved and metal material is replaced with ceramic material.

Description

technical field [0001] The invention relates to a perforation plug for an oil well perforator, in particular to a ceramic perforation plug for an oil well perforator and a production method thereof. Background technique [0002] In the prior art, when the oil well perforator works, the scene is as follows: Figure 4 As shown, the perforator 10 is lowered into the oil well 11. When the igniter is ignited, the fuse first ignites the perforating charge installed at the perforation 10-1 of the perforating device, and the perforating charge blows up the perforation plug , and shoot towards the rock formation 12, the capping fragments penetrate into the rock formation, and then the gunpowder in the perforator is ignited to form an impact airflow, and the airflow continues to impact along the rock formation penetration holes hit by the capping fragments, expanding the cracks in the rock formation, and finally making the rock formation The oil in the oil can flow into the oil well a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/119C04B35/622C09J5/00
Inventor 冯锋
Owner 冯锋
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