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Binary ball-throwing counting cluster type sliding sleeve

A binary and sliding sleeve technology, applied in the direction of production fluid, wellbore/well components, earthwork drilling and production, etc., can solve problems such as operational errors and major operational hidden dangers, and achieve the effect of ingenious design and simple operation

Pending Publication Date: 2021-04-27
DRK OIL TOOLS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention aims to propose a binary ball counting cluster sliding sleeve to solve the problem of major operational hidden dangers caused by operator errors on site

Method used

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  • Binary ball-throwing counting cluster type sliding sleeve
  • Binary ball-throwing counting cluster type sliding sleeve
  • Binary ball-throwing counting cluster type sliding sleeve

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Embodiment Construction

[0032] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0033] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be understood ...

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Abstract

The invention provides a binary ball-throwing counting cluster type sliding sleeve. The binary ball-throwing counting cluster type sliding sleeve comprises a clustering assembly and a segmented sliding sleeve which are mounted in a well, wherein the clustering assembly comprises a clustering body, a first sliding sleeve and a plurality of first rupture disks; the first sliding sleeve is connected in the clustering body in a sleeving manner; a plurality of first mounting holes are formed in the side wall of the clustering body in the radial direction; one first rupture disk is arranged in each first mounting hole; the segmented sliding sleeve comprises a segmented body, a second sliding sleeve, a ball seat and a supporting sliding sleeve; the second sliding sleeve, the ball seat and the supporting sliding sleeve are arranged in the segmented body; the ball seat is positioned between the second sliding sleeve and the supporting sliding sleeve; a plurality of second mounting holes are formed in the side wall of the segmented body in the radial direction; and one second rupture disk is mounted in each second mounting hole. According to the binary ball-throwing counting cluster type sliding sleeve, a lock cylinder assembly and a sliding sleeve clamping position are arranged in the clustering sliding sleeve, and a clamping groove with a trapezoidal slope is matched with a lock cylinder designed at the arc-shaped top end, so that binary counting guided by pressure building in a pipe after ball throwing is realized, and segmented fracturing is realized; and the binary ball-throwing counting cluster type sliding sleeve is ingenious in design and simple to operate.

Description

technical field [0001] The invention belongs to the technical field of multi-cluster sliding sleeves for staged fracturing and cementing in oil fields, and in particular relates to a binary ball-dropping and counting cluster sliding sleeve. Background technique [0002] Nowadays, major oil fields at home and abroad are facing the problem of low oil recovery rate. How to increase the recovery rate of a single well and increase oil production is an urgent problem to be solved; especially facing the problem of difficult development of low permeability reservoirs. [0003] Multi-stage sliding sleeve staged fracturing technology is one of the main technologies for oil production stimulation, but conventional fracturing sleeves also have certain limitations. First, the conventional fracturing sleeve can open a group of circulation holes each time the ball is thrown, and only one fracturing fracture can be fractured in each section, and multiple cluster fracturing is not allowed, w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B34/06E21B34/14E21B43/26E21B43/14
CPCE21B34/063E21B34/14E21B43/26E21B43/14
Inventor 杨久建李少卜李学松
Owner DRK OIL TOOLS
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