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Downhole automatic fluid control device

A fluid control device and fluid technology, applied in the production of fluid, wellbore/well components, measurement, etc., can solve the problems of scaling, wear, blockage, etc., to reduce the probability of wear and scaling, and improve reliability.

Pending Publication Date: 2021-06-25
SUZHOU FLOWAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing fluid control devices will cause the flow rate of the flowing fluid to be too low or too fast. If the flow rate is too low, it will cause clogging or fouling, and if the flow rate is too fast, it will cause increased risks such as wear

Method used

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  • Downhole automatic fluid control device
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Examples

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Embodiment Construction

[0023] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. In the drawings, the thicknesses of regions and layers may be exaggerated for clarity. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted.

[0024] Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of embodiments of the invention. However, one skilled in the art will appreciate that th...

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PUM

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Abstract

The invention provides a downhole automatic fluid control device. The device comprises a fluid control module, a switch module and a sensing module. Fluid enters from an inlet of a sensing flow channel and leaves from an outlet of the sensing flow channel, pressure detection is respectively carried out on an upstream sensing point, a midstream sensing point and a downstream sensing point in the flowing process of the fluid, a first flow resistor and a second flow resistor have sensitivity to the viscosity change of the fluid, and the viscosity sensitivity of the first flow resistor is higher than that of the second flow resistor. According to the viscosity of the fluid, the flowing state of the fluid flowing through the first flow resistor is switched between laminar flow and turbulent flow, so that a corresponding pressure value is generated at the downstream sensing point, and the switch module is controlled to be switched between a first position and a second position according to the pressure difference between the upstream sensing point and the downstream sensing point.

Description

technical field [0001] The invention relates to water control / gas control technology in oil fields, in particular to an automatic downhole fluid control device. Background technique [0002] In existing hydrocarbon-bearing underground rock formation well completion equipment, in order to control the inflow of production fluid, a fluid control device can be installed, which adjusts the switch of the valve by sensing the fluid viscosity, so that the fluid (oil) with high viscosity flows in, while Allow low viscosity fluids (water or air) to inflow less or even prevent inflow. Existing fluid control devices will cause the flow rate of the fluid to flow too low or too fast. If the flow rate is too low, it will cause clogging or fouling, and if the flow rate is too fast, it will cause increased risks such as wear. [0003] Therefore, a downhole automatic fluid control device is needed to improve the reliability and safety of the device on the basis of controlling fluid inflow. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/12E21B47/00E21B47/06
CPCE21B43/12E21B47/00E21B47/06
Inventor 荣新起赵亮
Owner SUZHOU FLOWAY TECH CO LTD
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