国产欧美精品一区二区,中文字幕专区在线亚洲,国产精品美女网站在线观看,艾秋果冻传媒2021精品,在线免费一区二区,久久久久久青草大香综合精品,日韩美aaa特级毛片,欧美成人精品午夜免费影视

To develop a cross-hole ERT system for monitoring CO2 migration in the formation, an optimization design method of ERT electrode array and working mode was studied, and an experimental system for cross-hole ERT was developed. Based on the COMSOL platform, a finite-element numerical model for simulating the responses of cross-hole ERT measurement was built. The impact of the spacing and axial width of electrodes and the operating mode of electrode arrays on the electric-field sensitivity in the monitoring area were investigated through the numerical model. The optimized parameters of the electrodes were derived. The ratios of the electrode spacing and width to the monitoring range were determined as 0.200 and 0.025, respectively. The AM-BN configuration was chosen as the best operating mode of the electrode array. Based on the functional requirements analysis, overall design and the above optimization design of the experimental system, the hardware and software parts of the system were developed respectively. The measurement of electrical impedance parameters was realized by using a multiplexer switch and precise bridge instrument. The automatic control of the experimental system was realized by using the measurement and control software developed on the platform of LabVIEW. Experimental tests were carried out by embedding insulating objects to simulate the injection of CO2 into formation. The results have shown that the measured electrical impedance data can reflect the changes in electrical parameters in the monitoring area sensitively and can be used to locate the position of the insulating objects. The validity of the developed system was verified through an analysis of the test data. The design method for optimizing the electrode array and cross-hole ERT experimental system provide an experimental platform for an in-depth study of the CO2 saturation-evaluation model based on complex-conductivity parameters and development of cross-hole ERT monitoring systems for field applications.