Labscale Experiment Fluid Injection using Self Potential, Electrical Resistivity Tomography, and Mise-à-la-Masse

Fluid distribution mapping in the fluid injection process of oil field development is a significant challenge in the oil and gas industry. Therefore, a cost-efficient and accurate monitoring method is required. This paper describes the use of one of the geophysical methods, the electrical method, to map fluid movement in a more efficient cost compared to other methods. The laboratory experiment was conducted using soil as the cap rock and quartz sand as the reservoir rock. The Self Potential (SP) and Electrical Resistivity Tomography (ERT) methods show the presence of water fluid in the pool tank. Meanwhile, the measurement results of the ERT method using the Multigradient configuration when there is water injection with a flow rate of 1 L/m and a north-south direction obtained a resistivity value of about 0-30 Om. In general, the water injection system equipped with monitoring capabilities for controlling the injection flow rate improves overall experimental precision. The result of this study can be extended into a field scale study to directly monitor the subsurface fluid distribution.