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Selective inflow control device based on cyclone resistance increasing effect

An inflow control and selective technology, applied in the production of fluids, wellbore/well components, earth-moving drilling, etc., can solve the problems of low fluid identification accuracy, difficult processing, unstable performance, etc.

Active Publication Date: 2019-07-02
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing AICD still has problems such as low fluid recognition accuracy, unstable performance, complex structure, and difficult processing.

Method used

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  • Selective inflow control device based on cyclone resistance increasing effect
  • Selective inflow control device based on cyclone resistance increasing effect
  • Selective inflow control device based on cyclone resistance increasing effect

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with accompanying drawing.

[0029] figure 1 Schematically shows a selective inflow control device based on swirling resistance increasing effect according to an embodiment of the present invention. According to the selective inflow control device based on the swirling resistance increasing effect of the present invention, it can automatically control water and stabilize oil.

[0030] Such as figure 1 As shown, the selective inflow control device based on the swirling resistance increasing effect described in this embodiment includes a central pipe 1 . The central pipe 1 is connected with a special precision sand control screen or other completion strings through a coupling. The device described in this embodiment also includes an outer cylinder 2 . The outer cylinder 2 is sheathed outside the central pipe 1 , and the lower end of the outer cylinder 2 is sealingly connected to the middle of the cen...

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Abstract

The invention relates to a selective inflow control device based on the cyclone resistance increasing effect. The selective inflow control device based on the cyclone resistance increasing effect comprises a central tube, an outer cylinder, a controller main body and a flow guiding device, wherein the outer cylinder sleeves the center tube, an annular cavity is formed between the outer cylinder and the center tube, and one end of the outer cylinder is hermetically connected with the middle part of the center tube; the controller main body is fixed to the center tube, the controller main body is configured to enable fluid in the annular cavity to be introduced into the center tube, the controller main body is provided with two cyclone systems for identifying and distinguishing fluid and increasing resistance to the fluid in a distinguishing mode; and the flow guiding device is arranged in the annular cavity, the flow guiding device is fixed to the outer wall of the center tube and is configured to be capable of guiding the fluid to the controller main body. The selective inflow control device based on the cyclone resistance increasing effect has the function of accurately identifying fluid and can automatically adjust the current limiting resistance according to the change of the property, composition and inflow rate of the formation fluid, the bottom water coning phenomenon isprevented, and long-term stable production of horizontal wells is ensured.

Description

technical field [0001] The invention relates to a selective inflow control device based on the swirling flow resistance increasing effect, in particular to a water control and oil stabilizing device for identifying and distinguishing fluids and differentially increasing the resistance of the fluids. Background technique [0002] In horizontal wells in edge and bottom water reservoirs, due to the influence of wellbore friction pressure drop and formation heterogeneity, the inflow profile of formation fluid along the wellbore direction is unbalanced. In this way, the production pressure difference between the heel and the high-permeability zone is often much higher than that of the toe and the low-permeability zone, resulting in the inflow of the heel and the high-permeability zone being significantly larger than that of the toe and low-permeability zone, which easily causes edge and bottom water cone into. Once a water cone occurs, the formation water will quickly form a bre...

Claims

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Application Information

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IPC IPC(8): E21B43/32
CPCE21B43/32
Inventor 赵旭翟羽佳姚志良李晓益朱明罗燕伊伟锴侯倩段友智贺英何同
Owner CHINA PETROLEUM & CHEM CORP
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