Application of large-array microseismic real-time monitoring technique in hydraulic fracturing of shale oil
Shale oil is an important strategic resource for the country.The main type of shale oil in China is con-tinental shale oil,especially in the Jiyang Sag.The geological conditions of the shale reservoir are complex,and the commonly used fracture identification techniques,including ant tracking,coherence volume,and curvature volume,cannot meet the accuracy requirements,thus posing a huge challenge to exploitation.In order to accelerate the development of shale oil,large-array microseismic real-time microseismic monitoring technology has been deployed in the shale oil demonstration area of the Fanye 1 well group,and construction parameter iteration and technical scheme optimization are carried out through closed-loop optimization.A new method for stimulated reservoir volume(SRV)and fracture complexity index(FCI)based on microseismic source pa-rameters was proposed to quantitatively evaluate reservoir stimulation and hydraulic fracture.This article mainly describes the geological engineering integration practice based on large-array microseismic real-time monitoring technique in the shale oil demonstration area of the Fanye 1 well group.The obtained knowledge and ex-perience have a valuble reference.
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