Physically simulated gas injection-production flow control system of gas storage

Abstract

The invention discloses a physically simulated gas injection-production flow control system of a gas storage. The system specifically comprises a gas injection-production control device which is connected with gas storage core model, and comprises a high-pressure cavity, a low-pressure cavity and a balance cavity; the control on the pressure and the flow of injected gas and produced gas of the gasstorage core model is realized by sufficiently mixing the gas in the high-pressure cavity and the gas in the low-pressure cavity in the balance cavity; a gas pressurizing device is communicated withthe high-pressure cavity and / or low-pressure cavity of the gas injection-production control device, and used for controlling high-pressure cavity pressure and / or the low-pressure cavity pressure in the gas injection-production control device; a gas cylinder device is connected with the gas pressurizing device and used for providing gas source for the gas pressurizing device; a gas flow monitoringdevice is arranged between the gas injection-production control device and the gas storage core model and used for recording gas flow data in the gas injection and gas production process; and a control analysis device is respectively connected with the gas pressurizing device and the gas traffic monitoring device, and used for controlling a control system to simulate the gas injection-production parameter in the actual gas storage, and monitoring and recording various experimental data.

Description

technical field [0001] The invention relates to the technical field of porous gas storage, in particular to a gas storage physical simulation gas injection and production flow control system for controlling the injection and production gas flow during the actual periodic injection and production operation of the simulated gas storage in a laboratory. Background technique [0002] Underground gas storage is mainly a pore-type gas storage rebuilt from depleted oil and gas reservoirs. Therefore, before the construction of the gas storage, it is necessary to fully understand the original physical properties of the reservoir, and study the injection-production operation mechanism of the rebuilt gas storage and its main features. Influencing factors, especially the influence of gas injection and gas production flow rates on gas storage capacity parameters during injection and production operations, to guide the optimization of gas storage injection and production operation plans. ...

AI Technical Summary

Problems solved by technology

During the injection-production operation of the porous gas storage, affected by many factors such as injection-production speed, operating pressure range, and water intrusion, it is impossible to simulate the reciprocating high-speed injection-production operation law and its impact on the operation of the gas storage by using conventional oil and gas reservoir development experiment methods. Influence of database construction and operation efficiency

Conventional experimental devices use mass flow controllers to realize gas injection and production. The type of gas controlled by such devices is single, and the range of gas flow and pressure controlled is limited. It is difficult to meet the large pressure range and high-speed injection and production of porous gas storage. The need for operational mechanistic studies

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