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Protective sleeve volume fracturing pipe string

A volumetric fracturing and casing protection technology, which is applied in the field of fracturing strings, can solve problems such as weak bonding between the main body of the sandblasting machine and the upper joint, loose installation of the main body of the sandblasting machine and the nozzle, and potential safety hazards. Achieve the effect of reducing equipment volume, reducing impact and improving fracturing efficiency

Pending Publication Date: 2018-09-07
磐石市长城机械厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are some problems in the use of the existing sand blaster, for example: the bonding between the main body of the sand blaster and the upper joint is not firm, it is easy to fall off after long-term use, and there are potential safety hazards; the installation between the main body of the sand blaster and the nozzle is not enough Strong, poor sealing, affecting production efficiency

Method used

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  • Protective sleeve volume fracturing pipe string
  • Protective sleeve volume fracturing pipe string
  • Protective sleeve volume fracturing pipe string

Examples

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Effect test

Embodiment Construction

[0017] A protective casing volume fracturing string, including casing 1 and tubing 2, such as Figure 1-Figure 3 As shown, it also includes an anchor packer 3 and a self-sealing sand blaster 4;

[0018] The anchor packer 3 includes a packer main body, and also includes an upper joint 31, a pressure plate 32, a spring 33, an anchor block 34, an upper rubber cylinder seat 35, a rubber cylinder 36, a central pipe 37, and a lower rubber cylinder seat 38 and the lower joint 39; the upper joint 31 and the lower joint 39 are respectively fixed at both ends of the packer main body, and the rubber cylinder 36 passes through the upper rubber cylinder seat 35 and the lower rubber cylinder seat 38 fixed on the outside of the packer body, the anchor block 34 is set in the opening at the top of the packer body, the pressure plate 32 and the anchor block 34 are connected by the spring 33, The central pipe 37 is arranged inside the main body of the packer;

[0019] The self-styled sand blas...

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Abstract

The invention discloses a protective sleeve volume fracturing pipe string, belongs to the technical field of petroleum exploitation equipment, and particularly relates to a fracturing pipe string. Theprotective sleeve volume fracturing pipe string comprises a sleeve, an oil tube, an anchor packer and a self-sealing sandblaster. The protective sleeve volume fracturing pipe string has the followingbeneficial effects that the anchor packer adopts a firmer sealing method, the self-sealing sandblaster has a good self-sealing property, an upper connector of the sandblaster and an anti-recoil shearpin of the sandblaster sliding sleeve can ensure the smooth passing of a steel ball, the loss of fracturing throttling is reduced, the fracturing efficiency is improved, a rubber cylinder and a sandblaster rubber cylinder can ensure the sealing performance of the anchor packer and the self-sealing sandblaster and enable a nozzle of the sandblaster to be away from the sleeve, the impact on the sleeve is reduced, the size of the equipment is reduced through the integrated connection of self-sealing sandblaster and the anchor packer, and the construction intensity is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of oil exploitation equipment, and in particular relates to a fracturing pipe string. Background technique [0002] In the field of petroleum, fracturing refers to a method that uses hydraulic action to form cracks in oil and gas layers during the process of oil or gas recovery, also known as hydraulic fracturing. Fracturing is to artificially create fractures in the formation, improve the flow environment of oil underground, increase the production of oil wells, and play an important role in improving the flow conditions at the bottom of oil wells, slowing down interlayers and improving the production status of oil layers. The sand blaster acts as an output port for fluid and sand in the fracturing process, opening the sand blast port under certain conditions. However, there are some problems in the use of the existing sand blaster, for example: the bonding between the main body of the sand blaster and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/26E21B33/127
CPCE21B33/127E21B43/26
Inventor 伊坤杨桂文于明王艳丽伊鹏郭启宝寇君宫文卓
Owner 磐石市长城机械厂
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