A kind of closing door fracturing sliding sleeve and using method
A technology of fracturing sliding sleeves and fracturing balls, which is applied in the direction of earthwork drilling, wellbore/well components, production fluids, etc., which can solve the problems of blocked tubing channels and achieve long-term shutdown and high reliability
Active Publication Date: 2021-04-02
东营市汇诚石油工程技术有限责任公司
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
In order to solve the problem that the fracturing sleeve will return sand or formation debris through the fracturing port and block the tubing channel
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0026] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
[0027] as attached figure 1 As shown, on the one hand, the present invention discloses a fracturing sliding sleeve with a closeable door. The fracturing sliding sleeve includes: an upper joint 1, a central tube 2, a cup door mechanism 3, a fracturing ball 4, a sandblasting port 5, a ball Seat 6, locking port 7, sand retaining outer pipe 8 and lower joint 10.
[0028] Wherein, the upper end of the central pipe 2 is connected to the upper joint 1, and the lower end is connected to the lower joint 10. The central pipe 2 is provided with a ball seat 6 inside, and the ball seat 6 is fixed inside the central pipe 2 by shear nails 9. The outside of the center pipe 2 is p...
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
Login to View More Abstract
The invention belongs to the technical field of petroleum exploitation, and in particular relates to a door-closable fracturing sliding sleeve and a use method thereof. The fracturing sliding sleeve includes: an upper joint, a central pipe, a cup door mechanism, a fracturing ball, a sandblasting port, a ball seat, a locking port, a sand retaining outer pipe and a lower joint. Wherein, the upper end of the center is connected to the upper joint, the lower end is connected to the lower joint, a ball seat is arranged inside the central tube, the ball seat is fixed inside the central tube by shear nails, a leather cup door mechanism is provided outside the central tube, and the upper end of the lower joint is connected to a sand retaining valve. outer tube. When fracturing, the ball is thrown and pressurized, the ball seat cuts the shear nails and goes down, and the sandblasting port is opened, and the fracturing fluid enters the formation through the sandblasting port, the sand retaining outer pipe and the annulus of the central pipe, and can perform fracturing reform on the oil layer; during production , the leather bowl door mechanism enters the "door frame" under the action of the production pressure difference, and closes the sand-retaining outer pipe and the central pipe annulus to realize long-term sand-retaining production.
Description
technical field [0001] The invention belongs to the technical field of petroleum exploitation, and in particular relates to a door-closable fracturing sliding sleeve and a use method thereof. Background technique [0002] At present, for difficult-to-develop oil and gas reservoirs, in order to reduce seepage resistance and effectively communicate reservoirs, multi-stage fracturing is mostly used. On the one hand, in order to make the production channel unobstructed after the fracturing of the layered section, it is necessary to lower the small-diameter coiled tubing in the fracturing string for backwashing and flushing sand. Sliding sleeves or perforation holes) are not effectively closed, which will lead to the regurgitation of the proppant just added in the fracturing of the stratified section or the formation debris of the volume fracturing. On the other hand, the fracturing channel is not only used as a channel for fracturing fluid and proppant to enter the reservoir an...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): E21B34/14E21B34/08E21B43/26
CPCE21B34/08E21B34/14E21B43/26
Inventor 孟宪波刘彦辉刘希峰王勇赵文红李刚冯小红陈冠羽陈冠合
Owner 东营市汇诚石油工程技术有限责任公司