Unlock instant, AI-driven research and patent intelligence for your innovation.

Screen pipe completion system

A screen tube completion and screen tube technology, applied in the field of equipment for gas, water, oil production, soluble or meltable substances or mineral mud, can solve the risk of increasing the risk of hanging in advance, affecting the running speed of the pipe string, Hanger damage and other problems, to reduce mud pollution formation, save completion time, reduce costs

Inactive Publication Date: 2013-02-06
SHAANXI QIYUAN TECH DEV
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this structure, the interior of the upper pipe string is a dead space, and timely grouting is required during the run-in process, which affects the run-in speed of the pipe string
And it is easy to produce pressure fluctuations, resulting in fluctuating pressure, causing damage to the hanger for hanging shear nails, and increasing the risk of hanging in advance

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
  • Screen pipe completion system
  • Screen pipe completion system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Such as figure 2 As shown, the screen tube completion system of the present invention is composed of a hollow liner hanger 1 and a hollow screen tube that are connected up and down through a liftable ball seat 6, and the tubing 7 passes through the liner tube hanger 1 and the screen tube in turn. internal. The top of the liner hanger 1 is connected with the top packer 5 . The tail end of the screen tube is provided with a socket 8, and the socket 8 is fixedly provided with a cannula 9.

[0016] When in use, after the present invention goes down to the designed well depth, the ball is thrown, and the ball falls on the liftable ball seat 6 at the tail end of the central tube of the packing liner hanger 1 to form a seal, hold the pressure and sit on the liner hanger 1, and continue to hold the pressure , hold back the ball seat 6, establish a normal circulation, then circulate the well to wash, foam glue, back-off after the construction is completed, use the mechanical ...

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 discloses a screen pipe completion system and relates to a device for exploiting oil, gas, water, soluble or meltable substances or mineral slurry from a well. The screen pipe completion system disclosed by the invention comprises a hollow tail pipe hanger and a hollow screen pipe, which are connected longitudinally, and an oil pipe sequentially penetrates the interior of each of the tail pipe hanger and the screen pipe. The screen pipe completion system disclosed by the invention can save completion time, wash the slurry in an open hole annulus clean when a pipe column is washed, ensure the cleanness of an open hole, reduce the pollution of a formation caused by the slurry and also improve recovery rate. The structure for washing the pipe column can greatly reduce expenses under the same conditions.

Description

technical field [0001] The present invention relates to an apparatus for extracting oil, gas, water, soluble or meltable substances or mineral mud from wells. Background technique [0002] Suspension screen completion is a well completion method commonly used in domestic horizontal well completions. It has little damage to oil and gas layers, and increases oil layer production channels. The single well production is greatly improved compared with ordinary well perforation completion. At the same time The screen suspension also saves a lot of casing and reduces the completion cost. [0003] At present, the most common method of screen completion in China is to use a liner hanger for the upper part and a screen for the lower part, and to use an external packer for annulus isolation between the two. The more common string structures include running tools, liner hangers, external packers, blind plates, screen strings, and boots (see figure 1 ). However, in this structure, the...

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): E21B43/08E21B21/00
Inventor 张淑芬
Owner SHAANXI QIYUAN TECH DEV