A control method suitable for intelligent separate injection well pressure closed loop measurement and regulation

CN122169765APending Publication Date: 2026-06-09DAQING OILFIELD CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DAQING OILFIELD CO LTD
Filing Date
2024-12-09
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing smart wells cannot maintain stable injection pressure during adjustment, leading to inter-layer interference and the inability to achieve remote measurement and adjustment, thus failing to meet the single-layer adjustment requirements.

Method used

By dividing the target smart well into target and non-target segments, the injection pressure of the target segment is obtained and a constant pressure control valve is used to maintain the stability of the measured and adjusted pressure, thereby eliminating inter-layer interference and achieving single-layer regulation.

Benefits of technology

It achieved stable control of injection pressure, eliminated inter-layer interference, enabled remote measurement and adjustment of intelligent wells, reduced energy consumption and saved labor costs, and improved measurement and adjustment efficiency.

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Abstract

This invention relates to the technical field of oil production engineering, and more particularly to a control method for closed-loop pressure monitoring and adjustment of intelligent injection wells. The method includes: identifying a target intelligent well; obtaining and labeling the number of layers in the target intelligent well; detecting and recording the real-time single-layer water injection volume of each layer; dividing each layer into a target layer and multiple non-target layers based on the real-time single-layer water injection volume; obtaining the injection pressure of the target layer by monitoring and adjusting the target layer; obtaining the monitoring and adjustment pressure from the target layer injection pressure; inputting the monitoring and adjustment pressure into a constant pressure control valve; controlling the monitoring and adjustment pressure to stabilize the pressure through the constant pressure control valve; monitoring and adjusting the water injection volume of each non-target layer; detecting the water injection volume of the target intelligent well after monitoring and adjustment, until the single-layer water injection volume of each layer of the target intelligent well meets the injection requirements, thus completing the monitoring and adjustment. The method provided by this invention eliminates inter-layer interference during monitoring and adjustment, adjusts unqualified layers on a single layer, and realizes remote monitoring and adjustment of intelligent injection wells.
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