A control system of a simulation experiment device for natural gas hydrate development

Abstract

The invention discloses a control system of a natural gas hydrate development simulation experiment device. The system comprises a main control processor, and a well pattern differentiation control module, a high pressure balance maintaining module, a sensor assembly and a secondary gas production implementation module which are connected with the main control processor, wherein the high pressurebalance maintaining module comprises a balance voltage collecting unit and a pressure adjusting motion unit, the balance pressure collecting unit receives a primary barometer pressure value after primary boosting is conducted by a balance gas booster pump and a balance injection barometer pressure value after secondary boosting is conducted by a secondary pressure pump, and according to the pressure value after secondary boosting is conducted, the main control processor drives the pressure adjusting motion unit to adjust the strength of the booster pump in a formation pressure injection simulation system and a flow control adjusting valve switch until an injection pressure value of each gas pipeline reaches a set pressure value. According to the scheme, by means of the control system of the natural gas hydrate development simulation experiment device, unified and organized management and connection can be conducted on the modules of a simulation process, convenience and effectiveness of a control process are improved, the implementation diversity of development simulation is improved, and multiple purposes are achieved by one body.

Description

technical field [0001] The invention relates to the technical field of hydrate simulation devices, in particular to a control system of a natural gas hydrate development simulation experiment device. Background technique [0002] Considerable reserves promote the continuous progress of development technology, and technological innovation will drive the efficient development of reserves. Since this century, the whole world has recognized that natural gas hydrate is a clean energy alternative to conventional fossil fuels. More than 200 hydrate deposits have been discovered in the world. Based on the current energy consumption trend, only 15% of hydrate mining can be used globally for 200 years. However, the stable temperature and pressure conditions formed by itself determine the particularity of its mining method. In addition, the impact of its mining process on the environment needs further evaluation. Therefore, most of the current research on hydrate mining is still in t...

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Problems solved by technology

[0008] (1) Existing simulation devices cannot construct specific stratum structures based on actual geological data, or simulate the actual environment through stratum structures. Because this process is difficult to simulate effectively, the simulation effect is different from the actual results. Inconsistencies or obvious differences lead to simulation results that cannot be directly used to guide actual production, but can only be used as an auxiliary basis for theoretical guidance;

[0009] (2) Existing simulation devices are often closed, and the simulated conditions are limited to the model body, and all its parameters and simulation conditions cannot be combined to form a dynamic equilibrium, which cannot simulate hydrate The dynamic environment, especially in the process of mining, the environment in which it is located is in the process of establishing balance and destroying balance, so it is impossible to simulate the dynamic mining process;

[0010] (3) In the existing simulation device, there is a fixed structure between the model body and the base, but this fixed structure limits the scope of application of the model, that is, for a model, what is preset to simulate Well patterns of different types can only simulate this type and cannot exceed this range, which is obviously unscientific

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