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

Drillable bridge plug double-pipe separate injection tool

A bridge plug and tool technology, applied in the field of drillable bridge plug double-pipe dispensing tools, can solve the problems of low reliability of concentric double-pipe dispensing strings, and achieve the effect of high long-term sealing reliability

Pending Publication Date: 2020-08-07
大庆兴华天义石油钻采设备制造有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of low reliability of the conventional concentric double-pipe dispensing string in the background technology, the present invention provides a drillable bridge plug double-pipe dispensing tool, which has high reliability

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
  • Drillable bridge plug double-pipe separate injection tool
  • Drillable bridge plug double-pipe separate injection tool
  • Drillable bridge plug double-pipe separate injection tool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] Refer to attached Figure 1-4 , the present invention includes wellhead dispensing pipeline 1, wellhead dispensing pipeline 1 includes two pipelines, one of which communicates with inner and outer oil pipes 6 and 4 annular cavities, and the other communicates with inner oil pipe 6 lumens.

[0023] The present invention also includes an upper bridge plug 2, a lower bridge plug 3, an outer pipe string and an inner pipe string, the upper bridge plug 2 and the lower bridge plug 3 are both hollow bridge plugs, and the upper bridge plug 2 and the lower bridge plug 3 are one The upper and lower sets are set on the inner wall of the casing. This embodiment is a 51 / 2-inch casing. The outer string is sealed and insert...

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 field water injection and water injection, and particularly relates to a drillable bridge plug double-pipe separate injection tool. The drillable bridge plug double-pipe separate injection tool comprises wellhead separate injection pipelines, an upper-layer bridge plug, a lower-layer bridge plug, an outer string and an inner string, wherein the upper-layer bridge plug and the lower-layer bridge plug are both hollow bridge plugs; the outer string is inserted into the upper-layer bridge plug in a sealed mode; the inner string penetrates throughthe outer string and is inserted into the lower-layer bridge plug in a sealed mode; an annular space is reserved between the inner string and the outer string; the outer string comprises an outer oilpipe, an upper insertion pipe centralizer and an upper-layer sealing insertion pipe which are sequentially connected from top to bottom; the upper-layer sealing insertion pipe is inserted into the upper-layer bridge plug in a sealed mode; the inner pipe column comprises an inner oil pipe, a lower-layer sealing insertion pipe and a lower insertion pipe centralizer which are sequentially connectedfrom top to bottom; and the lower-layer sealing insertion pipe is inserted into the lower-layer bridge plug in a sealed mode. The drillable bridge plug double-pipe separate injection tool solves the problem that an existing concentric double-pipe separate injection process string is unreliable, and is reliable in sealing.

Description

technical field [0001] The invention relates to the technical field of oilfield water injection and polymer injection, in particular to a drillable bridge plug double-pipe injection tool. Background technique [0002] The concentric double-pipe separate injection technology can well solve the problem of prominent contradictions between layers. After the packers are used to isolate each layer, each layer corresponds to the corresponding tubing, and the injection flow rate of each layer is adjusted through the wellhead separate injection process. , to form a throttling pressure difference, and solve the contradiction of large difference in injection pressure between layers. [0003] The concentric double-pipe dispensing string is composed of an inner pipe, an outer pipe, a packer and a sealing device. The packer includes two, which are respectively installed at the upper and lower ends of the outer pipe. The sealing device connects the inner pipe and the The outer tubes are s...

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
Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/134E21B29/00E21B43/20
CPCE21B33/134E21B29/00E21B43/20
Inventor 付政委宋文文关明军刘文军高铁庆苑锋任永庆张有兴贾广才贾广生
Owner 大庆兴华天义石油钻采设备制造有限公司
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