oa Inferring Wet Microseismic Events by Frac-hits in Hydraulic Fracturing

Unconventional hydraulic fracturing of oil and gas causes rock fracture, with some energy being diffused via microseismic waves. However, the deformation of non-fractured rocks also radiates microseismic waves. Therefore, there are multiple solutions for describing artificial fracture by microseismic events during hydraulic treatment. This article studies that the deployment of optical fibers and microseismic recievers in the same observation well, fiber optic technology can accurately identify the frac-hit of fracturing fluid reaching the wellbore. We use spatiotemporal properties to determine the corresponding microseismic events, and explore the characteristics of wet events by analyzing the stress drop of microseismic events. Based on those, we selected effective microseismic events, optimize the dimensions of artificial fracture networks, and enhance the support effect of microseismic guidance on hydraulic fracturing.