Productivity estimations for vertically fractured wells with asymmetrical multiple fractures

摘要

Through hydraulically fracturing, vertical wells can also create a region of stimulated reservoir volume (SRV) to enhance ultimate recovery. Thus, implementing SRV measures on old vertical wells is being common practices in Chinese oilfield, Ordos Basin. It is a significant problem that should be solved urgently about how to estimate productivities of vertical wells with SRV. Microseismic fracture imaging strongly shows multiple fractures (MF) can develop during SRV treatments. However, most of the published works on the productivities of vertically fractured wells assumed the wells contained a single and symmetrical fracture, and little work in literature has focused on asymmetrical MF.