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

Sleeved sand control device for downhole oil extraction device

A technology of oil recovery device and sand control device, which is applied to components of pumping devices for elastic fluid, production fluid, earthwork drilling and production, etc., and can solve problems affecting normal production and blockage of oil wells

Inactive Publication Date: 2006-07-19
DALIAN UNIV
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The currently used sand removal method is mainly screen filtration. After a period of use, the screen often becomes clogged and affects the normal production of the oil well.

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
  • Sleeved sand control device for downhole oil extraction device
  • Sleeved sand control device for downhole oil extraction device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] As shown in the figure, a set-up sand control device for downhole oil production equipment is mainly composed of a composite device of a cyclone. When the oil-water mixture with some sand particles enters the swirl cavity 18 of the outer cyclone through the multiple small holes 15 on the outer cyclone shell 3, due to the action of the fins 5 of the outer cyclone, the liquid flows in the outer cyclone. The cavity rotates downwards. Due to the high gravity of the sand, under the action of centrifugal force and gravity, the sand rotates and moves downward along the inner wall of the outer cyclone casing, and sinks into the outer annular space of the oil pipe at the bottom of the oil well through the outer sand outlet 21. While the liquid flow rotates and moves downward in the cavity of the outer cyclone, the oil-water mixture entrains some relatively fine sand particles, and is squeezed into the overflow pipe of the outer cyclone through the small hole on the overflow pipe...

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 an integrated sand-proof device used in oil production, which is characterized in that: it is a single, two, and / or three stage cyclone composite device formed by inner, outer or middle cyclone or other structures. Wherein, the third stage cyclone is sheathed in the second stage cyclone and the second stage cyclone is sheathed in the first stage cyclone; each cyclone is formed by the cyclone case and cyclone leak-off pipe; the outer cyclone case has radial and / or tangential oil-water mixture inlet; it uses the cyclone chamber of outer cyclone, a reflux chamber formed by one outer cyclone and one inner cyclone case, and the cyclone chamber of inner cyclone to separated the oil-water mixture from the sand; at last it uses the inner and outer sand outlets and the leak-off tube of inner cyclone to discharge the sand to the well and pump the mixture into oil pump. The inventive sand-proof device can avoid jam with safety and reliability.

Description

technical field [0001] The invention relates to an oil production device in an oil field, in particular to a sand control device installed before the inlet of a downhole oil production pump in an oil well and used for removing or reducing solid particles in the oil-water mixture, that is, sand grains. Background technique [0002] During oil production operations in oil fields, the produced oil-water mixture entrains some solid sand particles into the oil production device. These sand particles are very harmful to equipment such as oil production pumps and should be removed. The currently used sand removal method is mainly screen filtration. After a period of use, the screen often becomes clogged and affects the normal production of the oil well. Therefore, properly solving the problem of sand control and sand removal during oil production has become one of the most important issues to maintain the safe operation of oil production equipment and ensure continuous normal prod...

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): E21B43/08F04B53/20
Inventor 王景昌
Owner DALIAN UNIV