The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 18, 2023
Filed:
Mar. 17, 2020
China University of Petroleum (East China), Qingdao, CN;
Research Institute of Exploration and Development, Shengli Oilfield Branch, Sinopec, Dongying, CN;
Chuanzhi Cui, Qingdao, CN;
Zhongwei Wu, Qingdao, CN;
Zhen Wang, Qingdao, CN;
Tongyu Yao, Qingdao, CN;
Chuanbao Zhang, Dongying, CN;
Guangzhong Lv, Dongying, CN;
Yongpeng Ren, Dongying, CN;
Gang Cao, Dongying, CN;
Xiaoduo Cui, Dongying, CN;
Bo Chen, Qingdao, CN;
Abstract
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.