Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Anti-backflow adjustable water distributor

A water trap and anti-return technology, which is applied in the direction of wellbore/well components, production fluid, sealing/package, etc. It can solve the problems of inability to prevent regurgitation and achieve the effect of small radial size

Pending Publication Date: 2022-07-12
CHINA PETROLEUM & CHEM CORP +1
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an adjustable water distributor for preventing back-vomiting, so as to solve the technical problem that the matching water distributors for small and medium cased wells in the prior art cannot prevent back-vomiting

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
  • Anti-backflow adjustable water distributor
  • Anti-backflow adjustable water distributor
  • Anti-backflow adjustable water distributor

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment

[0038] like Figure 1 to Figure 11 As shown in the figure, the anti-returning adjustable water distributor (hereinafter referred to as the water distributor) is applied in a small diameter casing, including an upper joint 1, an outer cylinder 2 and a lower joint 3 which are connected in sequence from top to bottom, and the three threaded Assembled together, and a sealing ring is installed at the connecting position, the outer cylinder 2 is sequentially arranged with a positioning pipe 4, an anti-rotation pipe 5, a fixed valve plate 6, a rotary valve plate 8, and a rotating core 9 from top to bottom. .

[0039] The positioning tube 4 is fixedly installed on the outer cylinder 2. Specifically, there are 6 pin holes evenly distributed along the circumferential direction on the outer wall of the positioning tube 4, and 6 screw holes are correspondingly opened on the outer cylinder 2. In each screw hole and pin hole The second pins 16 are all worn, and the positioning tube 4 is fi...

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 belongs to the technical field of oil and gas exploitation, and particularly relates to a backflow-preventing adjustable water distributor. The anti-backflow adjustable water distributor comprises an upper connector, an outer cylinder, a lower connector and a positioning pipe, wherein a positioning groove is formed in the positioning pipe; an anti-rotation pipe is fixedly arranged at the lower end of the positioning pipe, the anti-rotation pipe, the outer cylinder and the positioning pipe are matched to form a first annular space, a sliding ring is slidably assembled in the first annular space, and a communicating hole is formed in the cylinder wall of the outer cylinder; a fixed valve plate is fixedly arranged at the bottom of the anti-rotating pipe, an overflowing hole is formed in the fixed valve plate, and a pressure spring is pressed between the sliding ring and the top of the first annular space; a cylindrical rotating core and a rotating valve plate are supported on the top face of the lower connector, a flow passing channel is formed in the rotating valve plate, and when the rotating valve plate rotates, the corresponding area of the flow passing channel and the flow passing hole can be changed so as to change the opening degree of the flow passing hole.

Description

technical field [0001] The invention belongs to the technical field of oil and gas exploitation, and in particular relates to an anti-spit-back adjustable water distributor suitable for small-diameter casings. Background technique [0002] At present, downhole eccentric water distributors are mostly used for stratified water injection in oilfields. However, during the fishing test, it is usually necessary to repeatedly throw the water nozzle until the water volume reaches the dispensing requirements. The field throwing test has a large workload and low efficiency, especially When applied to wells with more than 4 layers, the disadvantages of large workload and low efficiency are particularly obvious. The use of the water injection well measurement and adjustment integrated distribution process can realize the simultaneous measurement and adjustment, which greatly reduces the test workload. The downhole adjustable water distributor is the most critical tool in the measurement...

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): E21B43/20E21B34/08
CPCE21B43/20E21B34/08E21B2200/06
Inventor 马宏伟范钰玮王学宏杨佰阳邵志沈威
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com