Heavy oil thermal recovery combined steam supply control method, storage medium and coupling control device

By coupling and controlling the solar thermal steam supply unit and the fuel steam supply unit, the problem of large fluctuations in solar thermal steam output has been solved, realizing the stability of heavy oil thermal recovery and clean energy substitution, and improving the energy-saving and emission-reduction effect of oilfield production.

CN121111199APending Publication Date: 2025-12-12PETROCHINA CO LTD
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Patent Information

Application Number
CN202410755125.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-06-12
Publication Date
2025-12-12

AI Technical Summary

Technical Problem

The output of solar thermal power generation fluctuates greatly in heavy oil thermal recovery, leading to unstable supply and demand in heavy oil thermal recovery and hindering the application of clean energy alternatives.

Method used

By combining the coupled control of the solar thermal steam supply unit and the fuel steam supply unit, the predictive module predicts the solar thermal steam output and adjusts the steam flow of both in real time to stabilize the joint steam supply. This includes control strategies for fault diagnosis, cloud cover events, and ordinary fluctuation events.

Benefits of technology

This has improved the stability of heavy oil thermal recovery technology, promoted the substitution of clean energy, and achieved the goals of energy conservation and emission reduction.

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Abstract

The invention provides a heavy oil thermal recovery combined steam supply control method, a storage medium and a coupling control device, and belongs to the technical field of petroleum and natural gas development. The method comprises the steps of basic diagnosis for fault judgment, flow regulation rate locking judgment, diagnosis of a flow fluctuation event and execution of linkage regulation of a photo-thermal steam supply unit and a fuel steam supply unit when the flow fluctuation event occurs. The flow fluctuation event comprises at least one of cloud shading, cloud shading removal and common fluctuation, and the flow fluctuation amplitude of the common fluctuation event is lower than that of the cloud shading and the cloud shading removal event. According to the method, coupling linkage of two steam supply modes of photo-thermal DSG and fuel steam supply is achieved, the problem that when the photo-thermal DSG is applied to heavy oil thermal recovery, steam output fluctuation is large is solved, the working condition stability of heavy oil thermal recovery is improved, and photo-thermal clean replacement of the heavy oil thermal recovery process is promoted.
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Citation Information

Patent Citations

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  • Wind-light-storage complementary and collaborative steam production and auxiliary thickened oil thermal recovery system

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  • Solar steam production system for assisting thermal recovery of thickened oil

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