Performance testing system of cleanup additive for shale gas pressure cracking and method thereof

Abstract

The invention discloses a performance testing system of a cleanup additive for shale gas pressure cracking and a method thereof. The testing system includes: a shale gas delivery unit, a reaction unit, a cleanup additive delivery unit, a monitoring unit, a processing unit, and a control unit. The shale gas delivery unit includes a gas source, a flow control module, and a first supercharging module. The reaction unit includes a reaction vessel and a first heating module. The cleanup additive delivery unit comprises: a liquid container, a second heating module, and a second supercharging module.The monitoring unit includes a first temperature and pressure monitoring module, a second temperature and pressure monitoring module, and a flow monitoring module. The processing unit is electricallyconnected to the first supercharging module, the first heating module, the second heating module, the second supercharging module, the regulating valve, and the monitoring unit. The control unit is electrically connected to the processing unit. The testing method can be carried out under the temperature and pressure of a shale gas reservoir which meets the actual requirements, so that the test ofthe performance of the cleanup additive is accurate and reliable.

Description

technical field [0001] The invention relates to the field of gas field development and testing, in particular to a performance testing system and method of a drainage aid for shale gas fracturing. Background technique [0002] Shale gas reservoirs generally have the characteristics of low permeability and high formation pressure. Moreover, the nanoscale pore space of shale in this type of reservoir is strongly developed (pores, caves, and fractures communicate with each other), and a large amount of shale gas adsorption in the pore space. In order to increase the production capacity of shale gas, fracturing fluid must be used to fracturing the shale gas reservoir. During the fracturing process, the drainage aid in the fracturing fluid will directly affect the cost and effect of the fracturing operation. Therefore, in order to select a suitable drainage aid for fracturing operations, it is necessary to test the performance of the drainage aid for a specific shale gas reserv...

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