A horizontal well staged flow electrical simulation design method

By establishing a circuit model to simulate the fluid axis-diameter coupling effect in horizontal wells, the problem of fluid coupling effect in the development of horizontal wells in oil reservoirs was solved, and segmented flow control dynamic well completion design was realized, providing theoretical support for dynamic well completion design.

CN117231206BActive Publication Date: 2026-06-26SHENZHEN BRANCH CHINA NAT OFFSHORE OIL CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHENZHEN BRANCH CHINA NAT OFFSHORE OIL CORP
Filing Date
2023-08-29
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing technologies cannot effectively simulate and resolve the fluid axis-diameter coupling effect during the development of horizontal wells in oil reservoirs, resulting in a fixed production profile structure during long-term development, making it impossible to achieve segmented flow control and well completion design.

Method used

A circuit model based on power supply, resistor, switch and display modules is established. By adjusting the resistor and switch states, the fluid flow and production profile intensity of the horizontal well are simulated, and a relationship model between the fluid and the production fluid is established.

Benefits of technology

Electrical simulation of the fluid coupling effect of the shaft diameter in horizontal wells was achieved, simulating the local fluid profile changes in the wellbore of a horizontal well in a homogeneous reservoir under ideal conditions. This provides a theoretical basis for dynamic completion design and supports segmented flow-controlled dynamic completion mode.

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Abstract

The application discloses a kind of horizontal well segmented flow electric analog design methods, comprising: based on power supply, resistance, switch and display module establish and correspond to the circuit model of horizontal well;Wherein, the resistance of resistance and the flow parameter of fluid in horizontal well correspond, the state of switch and the flow stagnation state of fluid correspond, the current parameter of display module and the liquid production profile intensity of horizontal well correspond;Based on the completion mode of horizontal well, the flow stagnation state of fluid is determined, according to flow stagnation state and the fluid parameter of fluid, the resistance of resistance and the state of switch in circuit model are adjusted;Determine the current parameter of display module in circuit model and the liquid production profile intensity of horizontal well, based on current parameter and liquid production profile intensity, establish the relationship model of fluid and liquid production of horizontal well.It realizes the electric analog design of horizontal well segmented flow, provides horizontal well dynamic completion design theoretical framework.
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