China University of Petroleum

Research Institute of Exploration and Development, Shengli Oilfield Branch, Sinopec

Tongyu Yao

Zhen Wang

Bo Chen

Guangzhong Lv

Xiaoduo Cui

Zhongwei Wu

Gang Cao

Chuanbao Zhang

Chuanzhi Cui

Yongpeng Ren

The invention discloses a method for determining vertical well stratified fracturing crack length based on interlayer equilibrium development. According to the method, interlayer equilibrium development can be achieved by determining the crack length of fracturing of each layer in the condition that an oil well meets the productivity requirements. The method comprises the following steps: 1) a threshold pressure gradient of each layer is determined; 2) a relationship chart of the crack half-length xand the equivalent well diameter ris established; 3) daily oil production rate per unit thickness Qmeeting the production requirements is calculated; 4) the equivalent well diameter rof each layer is calculated according to the daily oil production rate Q; and 5) the crack half-length xof fracturing of each layer is calculated according to the equivalent well diameter rof each layer.

Method for determining vertical well stratified fracturing crack lengths based on interlayer equilibrium displacement

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Qingdao, China

Tongyu Yao