Anti-back-splash sand blasting perforator

A technology of sand blasting perforation and nozzles, which is applied in the direction of production fluid, wellbore/well components, earthwork drilling and production, etc., which can solve the problem of increasing the difficulty and cost of manufacturing perforators, increasing the number of joint gaps between components, and increasing the number of spray holes. Sealing difficulties and other issues, to achieve the effect of easy processing and assembly, reduce erosion, and improve convenience

Inactive Publication Date: 2015-05-06
JEREH ENERGY SERVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The covering part increases the number of parts of the perforating device, which increases the manufacturing difficulty and cost of the perforating device. In order to make it not hinder the water jet, it is necessary to set water spray holes on its surface, and the setting of the water spray holes and the covering parts Installation increases the number of connection gaps between parts

Method used

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  • Anti-back-splash sand blasting perforator
  • Anti-back-splash sand blasting perforator
  • Anti-back-splash sand blasting perforator

Examples

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Embodiment Construction

[0027] Anti-backsplash sandblasting perforator of the present invention, such as Figures 1 to 3 As shown, a body 1 and a nozzle 2 are included, and a plurality of nozzles 2 can be provided.

[0028] The outer wall of the body 1 is provided with a groove 3 , and the middle part of the groove 3 is provided with an installation hole 4 , and the nozzles 2 are installed in the installation hole 4 corresponding to the groove 3 .

[0029] The side wall 5 of the groove 3 is inclined, and the distance between it and the bottom surface 6 is 120°~160°. The outer end of the nozzle 2 protrudes from the bottom surface 6 of the groove 3, so that the side wall of the outer end of the nozzle 2 and the bottom surface 6 of the groove 3 and the side wall 5 of the groove 3 form a guide structure. The surface of the groove 3 and the surface of the body 1 on the edge of the groove 3 are provided with a wear-resistant coating, and the outer end of the nozzle 2 and the outer surface of the flange, e...

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Abstract

The invention relates to an anti-back-splash sand blasting perforator, which comprises a body and a nozzle, wherein a groove is formed in the outer wall of the body; an installation hole is formed in the middle of the groove; the side wall of the groove is inclined; the nozzle is installed in the installation hole; the outer end of the nozzle stretches out from the bottom surface of the groove. The anti-back-splash sand blasting perforator is simple in structure, less in parts, and easy to process and assemble; through the arranged groove and a bulge on the outer end of the nozzle, a flow guide structure is formed around the nozzle, so that back-splash liquid can be timely and uniformly flown when back splashing on the perforator, can be prevented from forming vortex in the groove, and can be prevented from flowing in the groove for a long time; the erosion of the back-splash liquid on the perforator is reduced, and the service life of the perforator is improved.

Description

technical field [0001] The invention relates to an oil and gas field operating equipment, in particular to an anti-backsplash sandblasting perforator. Background technique [0002] Perforation operation is a conventional operation method to establish a channel between the casing and the reservoir, and hydraulic sandblasting perforation is a commonly used method for oil and gas well stimulation measures in perforation operation. During the perforation process, high-pressure perforation fluid passes through The perforating gun becomes a high-speed jet, and the pressure energy is converted into kinetic energy, which shoots through the casing, cement sheath and formation near the wellbore, and first establishes a flow channel between the wellbore and the reservoir. During the perforation process, when the high-speed jet is sprayed into the casing and the formation, it will splash back to the perforator and the surface of the nozzle on the perforator, eroding scars on the perfora...

Claims

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Application Information

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IPC IPC(8): E21B43/114
CPCE21B43/11E21B43/114
Inventor 宁世品梅鹏
Owner JEREH ENERGY SERVICES
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