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Flow control device of high-efficiency flow control screen pipe

A flow screen and high-efficiency technology, which is applied in the fields of production fluids, wellbore/well components, and earth-moving drilling, etc., can solve the problem that the flow control flow channel cannot be processed as a whole, and achieves the effect of compact structure, easy installation and easy placement.

Inactive Publication Date: 2012-12-26
ANTON OILFIELD SERVICES (GRP) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The technical problem to be solved by the present invention is to overcome the defect that the flow control channel made of superhard and wear-resistant materials can hardly be processed as a whole, and to provide a flow control device for a high-efficiency flow control screen. The flow control device of the present invention The machining accuracy requirements are low, which makes the flow control channel made of superhard and wear-resistant materials easy to manufacture and replace; and the hole type of the small channel can be easily changed to straight hole, inclined hole or dislocation hole, and makes the entire control flow channel The flow channel can be bent with a certain curvature, which makes the structure of the flow control device more compact and facilitates the installation of the flow control device

Method used

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  • Flow control device of high-efficiency flow control screen pipe
  • Flow control device of high-efficiency flow control screen pipe
  • Flow control device of high-efficiency flow control screen pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as figure 2 As shown, the present invention is a flow control device for a high-efficiency flow control screen, the screen includes a base pipe 1, the base pipe is provided with a base pipe inlet 11, the base pipe is covered with a filter sleeve 2, and the base pipe The annular seam between the filter sleeve and the filter sleeve is the diversion layer 3, and the two ends of the filter sleeve are provided with end rings 4; the screen is provided with a flow control device 5, and the flow control device includes an inlet, an outlet and a Flow control channel, the flow control channel is composed of a plurality of flow units in series, each flow unit is composed of a small hole and a large hole connected in series, and the number of flow units is 2-500 or more than 500 The inlet of the flow control device communicates with the diversion layer, and the outlet of the flow control device communicates with the base pipe inlet; the manufacture and installation of the hig...

Embodiment 2

[0041] Such as image 3 As shown, the present invention is a flow control device for a high-efficiency flow control screen, the screen includes a base pipe 1, the base pipe is provided with a base pipe inlet 11, the base pipe is covered with a filter sleeve 2, and the base pipe The annular seam between the filter sleeve and the filter sleeve is a diversion layer 3; the screen is provided with a flow control device 5, and the flow control device includes an inlet, an outlet and a flow control flow channel, and the flow control flow channel It is composed of a plurality of flow units in series, each flow unit is composed of a small pore and a large pore connected in series, and the number of flow units is 2-500 or more; the inlet and guide of the flow control device The layers are connected, and the outlet of the flow control device is connected with the inlet of the base pipe; the manufacture and installation of the high-efficiency flow control screen includes the following ste...

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Abstract

The invention discloses a flow-control device of a high-efficiency flow-control screen pipe. The device comprises a screen pipe and the flow-control device arranged on the screen pipe; the flow-control device comprises a flow-control device shell and a flow-control flow channel arranged at the inside of the shell; the flow-control flow channel consists of a plurality of mobile units that are connected together in series; each mobile unit is formed by one or a plurality of flow units, comprising a small-hole channel and a big-hole channel that are connected together in series. The requirement of the processing precision of the flow-control flow channel of the flow-control device of the invention is low, so that the flow-control flow channel made from a super-hard wear-resistant material is easy to manufacture and replace; in addition, flow parameters can be adjusted; the hole type of the small-hole channel can be changed to a straight hole, a slant hole or a misplaced hole conveniently; and the flow-control flow channel of the whole flow-control device can be bent with a certain curvature, so that the structure of the flow-control device is more compact, and the flow-control device can be conveniently arranged.

Description

technical field [0001] The invention relates to a screen used in the field of oilfield exploitation, in particular to a flow control device for a high-efficiency flow control screen. Background technique [0002] In oil extraction operations, screens (also known as sand control pipes) are used for sand control and filtration of oil wells, gas wells, water injection wells, horizontal wells, vertical wells and directional wells. During the production operation, the screen pipe is lowered into the oil well, and there is an annulus between the screen pipe and the well wall. Such as figure 1 As shown, the screen tube includes a base pipe 1, through holes are evenly distributed on the base pipe wall as the entrance of the base pipe, the base pipe is covered with a filter sleeve 2, and the annular seam between the base pipe and the filter sleeve is a diversion layer 3. End rings 4 are provided at both ends of the filter sleeve. [0003] The development of most oil reservoirs is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/08E21B43/12
Inventor 裴柏林薛泳吴建昌
Owner ANTON OILFIELD SERVICES (GRP) LTD