Southwest Petroleum University

Zujun Jiang

Gao Li

Rui Li

Long He

Yi Feng

A multi-slug staged method for plugging a fractured formation includes: determining an average opening of fractures around a well as D, an average particle size of bridging particles for first-stage plugging as Dthat is slightly less than D, and average particle sizes of plugging particles for second to last-stage plugging as D-D, where Dis small enough to form a tight plugging layer; and sequentially injecting a plugging slurry only containing the bridging particles having the average particle size of D, plugging slurries containing the plugging particles having the average particle sizes of D-D, and a plugging slurry containing the plugging particles having the average particle size of Dinto the fractures to achieve the fractured formation plugging.

Growing community of inventors

Chengdu, China

Zujun Jiang