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The evaluation and management of the annulus pressure in the injection-production well of the gas storage is an important part of the wellbore integrity of the injection-production well. The Suqiao gas storage has experienced seven complete injection and production cycles. The production method puts high demands on the integrity of the injection-production well. At present, the injection and production wells of Suqiao Gas Storage in North China have different degrees of pressure in the oil casing annulus, which seriously threatens the safety of the wellbore of the gas storage. This paper analyzes the annulus pressure situation through different injection-production stages and different working conditions of gas storage injection and production wells, and establishes the environment by combining APIRP-2, NORSOK, ISO/TS 16530-2, SY/T5724—2008 and other standards. An annulus pressure evaluation process and an annulus pressure risk evaluation system that combines static and dynamic conditions. A four-level risk control model for gas storage injection and production wells is proposed. Annulus pressure well production management methods have been formulated to continuously improve gas storage. The operating environment and the treatment of injection-production wells with annulus pressure exceeding the maximum allowable value, especially the annulus blow-by problem of Well Su-20K-P1. The annulus pressure treatment has been carried out to achieve effective plugging and ensure the injection and production. The wellbore integrity has achieved a good repair effect, which has certain guiding significance for the evaluation of the wellbore integrity of the gas storage injection and production wells and the treatment of annulus with pressure.
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