Method and device for reconstructing natural gas reservoir into underground hydrogen storage library, electronic equipment and storage medium

By constructing a discrete pressure-saturation equation set in a natural gas reservoir and adjusting the gas injection and extraction rates, the problem of constructing a large-scale underground hydrogen storage facility was solved, enabling the safe conversion of a natural gas reservoir into an underground hydrogen storage facility and improving hydrogen storage efficiency.

CN122254231APending Publication Date: 2026-06-23CHINA PETROLEUM & CHEMICAL CORP +1
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Patent Information

Application Number
CN202411889735.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-20
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

There is a lack of quick and effective construction solutions for large-scale underground hydrogen storage facilities in the current technology, and hydrogen storage in conventional ground storage facilities is difficult.

Method used

The method of converting natural gas reservoirs into underground hydrogen storage facilities is adopted. By calculating the current saturation field and pressure field of the discrete spatial grid of porous media, a discretized pressure-saturation equation system is constructed. By adjusting the gas injection and gas production rates, the natural gas reservoir is gradually converted into an underground hydrogen storage facility.

Benefits of technology

This has enabled the safe and reliable conversion of natural gas reservoirs into underground hydrogen storage facilities, solving the problem of large-scale hydrogen storage and improving hydrogen storage efficiency.

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Abstract

The invention provides a method and device for reconstructing a natural gas reservoir into an underground hydrogen storage library, electronic equipment and a storage medium, and relates to the technical field of underground energy storage. The method selects the natural gas reservoir as the underground hydrogen storage library, mixed gas of natural gas and hydrogen is injected while the natural gas is mined, and the hydrogen proportion in the mixed gas is continuously increased along with the mining time; and gradually converting the natural gas reservoir into the underground hydrogen storage bank.
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