Chain-type body-free perforator

A perforator and gun body technology, which is applied in the perforation field of oil and gas wells through the tubing, can solve the problems of easy deformation of the bullet frame stuck in the casing, complex structure of the perforator, poor safety performance, etc., so as to avoid well jamming The effect of accidents, simple structure and reliable performance

Pending Publication Date: 2019-07-12
SICHUAN PETROLEUM PERFORATING EQUIP
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a chain-type barrelless perforator, which is used to solve the complex st

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Chain-type body-free perforator
  • Chain-type body-free perforator
  • Chain-type body-free perforator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0042] It should be noted that terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not intended to be used. To limit the practicable scope of the present invention, the change or adjustment of the relative relationship shall also be regarded as the practicable scope of the present invention without substantially changing the technical content.

[0...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to the technical field of oil and gas well through-tubing perforation operation, in particular to a chain-type body-free perforator. The chain-type body-free perforator includesat least one bullet holder, wherein perforating bullets are installed on the bullet holders, the perforating bullets comprise shell bodies and shell covers, the shell bodies are connected with the shell covers to form bullet shells with sealed inner cavities, the inner cavities of the bullet shells are filled with explosives, and the explosives are compacted through shaped charge liners installedin the inner cavities of the bullet shells. The chain-type body-free perforator has the beneficial effects that the structures of the bullet shells are simple, disassembly and assembly are convenient,end face sealing is carried out by the shell covers, connection and sealing of the shell bodies and the shell covers are realized through extrusion deformation force between the shell bodies and theshell covers, and performance is reliable; the independent bullet holders serve as carriers of the perforating bullets, the number and the phase position of the perforating bullets are flexibly set conveniently according to needs, all the bullet holders are arranged independently and are not prone to being clamped in casing pipes, moreover, the bullet holders can be broken into fine particles completely after perforation of the perforating bullets, after perforation is finished, the bullet holders do not need to be taken out again, occurrence of the well jamming accident is avoided, and safetyperformance is improved.

Description

technical field [0001] The invention relates to the technical field of oil and gas well perforating through oil pipes, in particular to a chain-type perforator without a barrel. Background technique [0002] Through-tubing perforation means that the perforator goes down through the tubing to the perforated section, and performs perforation in the casing. It is often used for oil testing, slim holes, and dealing with downhole accidents. Perforators are divided into two categories, one is the perforator with the gun body, and the other is the perforator without the gun body. Compared with the perforator with the gun body, under the same design size, the design space of the perforating bullet itself is larger, and the penetration depth and aperture are better, but it does not have the protection of the gun body. The whole perforator is completely in contact with the well fluid and has low pressure resistance. Therefore, the sealing requirements for perforating bullets without...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): E21B43/116E21B43/119
CPCE21B43/116E21B43/119
Inventor 赵世华陈玉雷新华刘玉龙付代轩赖康华杨清勇刘勇
Owner SICHUAN PETROLEUM PERFORATING EQUIP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap