Application of Microseismic and Seismic Integration Technology in Hydraulic Fracturing Test Site

During the construction of China’s first shale oil hydraulic fracturing test field, in order to systematically evaluate the scale and morphology of the fracturing fractures in the test wells, the coring well trajectory was optimized based on the distribution of microseismic events before drilling. In the subsequent comprehensive analysis process, the interpretation results of the coring well were analyzed for consistency with the microseismic events monitored during the previous fracturing process. Appropriate threshold values for microseismic event attributes were selected for screening, effective microseismic events were screened out, and the size of the effective fracture network was calculated. The regional microseismic interpretation model was optimized. Combined with 3D seismic attributes, seismic interpretation optimization based on the coring well was carried out to improve the interpretation accuracy. Finally, based on seismic and microseismic data, an analysis of the factors influencing the expansion of the hydraulic fracturing fracture network was conducted, and the morphology of the artificial fracture network formed by hydraulic fracturing was simulated.