Simulation experiment device for carbon isotope analysis in shale gas release process

Abstract

The invention discloses a simulation experiment device for carbon isotope analysis in a shale gas release process. The device comprises a reaction chamber, a temperature maintaining part, a vacuumizing part, a monitoring part, a filling part, a water injection part, a gas collecting part, a pressure balancing part and an adjusting component, the temperature maintaining component wraps the reactionchamber, the vacuumizing component, the monitoring component, the filling component, the water injection component, the gas collecting component and the pressure balancing component are connected with the reaction chamber, and the adjusting component fixes the reaction chamber and the pressure balancing component. With the adoption of the manner, an experiment can be carried out under a closed condition, the temperature required by each stage is maintained, and the pressure change is monitored; the fluid environment in the shale gas release process is simulated; the released shale gas can bestored in a sealed manner, and the released shale gas sample can be quantitatively extracted at any time; and the device is suitable for experiments of shale samples with small granularity, and can beused for experiments of various shale samples with various granularities.

Description

technical field [0001] The invention relates to the technical field of shale sample processing, in particular to a simulation experiment device for carbon isotope analysis in the shale gas release process. Background technique [0002] Shale gas development has always been a hot spot in the global energy research field. According to a large amount of practical experience, the carbon isotope fractionation characteristics of shale gas release process depend on the occurrence state of shale gas underground and the characteristics of shale pore media. In order to study this correlation and establish a corresponding model, a physical simulation experiment of the shale gas release process is required. Therefore, the geological sweet spots of shale gas can be identified through the analysis of the fractionation characteristics of shale gas. Related research is the focus and hotspot of current shale exploration technology research. The physical simulation experimental device needs ...

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Problems solved by technology

[0004] 1. The device cannot adjust the pressure. When the pressure is high, it will inhibit the release of shale gas to a certain extent and interfere with the release process of shale gas.

[0005] 2. The device cannot simulate the fluid conditions of shale under geological conditions, during drilling and in cuttings tanks. The real shale gas release process should involve the participation of water and other fluids

[0006] 3. The device can only monitor the pressure change during the shale gas release process, and cannot directly measure the gas release volume, and cannot quantitatively extract and vent the released shale gas, resulting in th

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