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Self-adaptive water control device for gas well and design method of device

A technology of water control device and design method, which is applied in design optimization/simulation, earthwork drilling and production, wellbore/well components, etc. It can solve the problem of inability to control water and gas, and cannot meet the requirements of gas reservoir stability, oil control and water control, etc. problems, to achieve the effect of long service life, no moving parts and reasonable structure

Active Publication Date: 2021-05-25
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current self-adaptive water control devices are all used to stabilize oil, control water and control gas in reservoirs, and cannot realize the function of controlling water and gas, and cannot meet the needs of gas reservoirs for stabilizing gas, stabilizing oil and controlling water. There is no adaptive water control device and method applicable to gas wells

Method used

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  • Self-adaptive water control device for gas well and design method of device
  • Self-adaptive water control device for gas well and design method of device
  • Self-adaptive water control device for gas well and design method of device

Examples

Experimental program
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Embodiment approach

[0095] First, select a gas field, determine the design target according to the actual situation of the gas field, and specify the water-oil pressure drop ratio and water pressure drop ratio that the adaptive water control device needs to meet. According to the actual situation of the gas field, it is required to be within 5m 3 Under the / d flow condition, the pressure drop of water flowing through the adaptive water control device is greater than 0.45MPa, and the water-oil pressure drop ratio is greater than 5, and the water pressure drop ratio is greater than 5; prevent fluid from turbulent flow in the adaptive water control device; simplify structure, improving the reliability and service life of the adaptive water control device.

[0096] Then, according to the water-oil pressure drop ratio and water pressure drop ratio that the gas field needs to meet, the structural parameters of the adaptive water control device are determined. The structural parameters include: the shap...

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Abstract

The invention provides a self-adaptive water control device for a gas well. The device comprises short and long flow channels which are connected and converged to a flow groove, a rotary control cavity which communicates with the flow groove tangent to the circumferential edge of the rotary control cavity, and an outlet nozzle which is arranged in the center of the rotary control cavity and is vertical to the end surface of the rotary control cavity. The self-adaptive water control device for the gas well can effectively achieve the effects of gas and oil stabilization and water control, and is reasonable in structure, free of movable parts and long in service life.

Description

technical field [0001] The invention relates to the technical field of oil and gas exploration and development, and more specifically, designs an adaptive water control device for gas wells and a design method thereof. Background technique [0002] Horizontal wells are widely used in the development of edge and bottom water reservoirs due to their large drainage area and high sweep coefficient, and have achieved good application results. In order to ensure the efficient development of oil and gas fields, my country has continued to explore and practice horizontal well technology since the 1990s. The application range has been continuously expanded, and the application effect has been more significant. However, due to the "heel-toe effect" in the production of horizontal wells and the influence of factors such as changes in the physical properties of the formation along the horizontal wellbore, it is easy to cause edge and bottom water to invade the wellbore prematurely, resu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/12E21B43/32G06F30/20
CPCE21B43/12E21B43/32
Inventor 赵旭周朝姚志良李晓益翟羽佳伊伟锴
Owner CHINA PETROLEUM & CHEM CORP
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