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:
Nov. 24, 2020
Filed:
Aug. 26, 2019
Southwest Petroleum University, Chengdu, CN;
Cong Lu, Chengdu, CN;
Jianchun Guo, Chengdu, CN;
Yang Luo, Chengdu, CN;
Bin Qian, Chengdu, CN;
Meiping Li, Chengdu, CN;
Congbin Yin, Chengdu, CN;
Yunchuan Zheng, Chengdu, CN;
Yong Ren, Chengdu, CN;
Ye Zhong, Chengdu, CN;
Chi Chen, Chengdu, CN;
Yongjun Xiao, Chengdu, CN;
Xianjun He, Chengdu, CN;
SOUTHWEST PETROLEUM UNIVERSITY, Chengdu, CN;
Abstract
A method for acquiring an opening timing of natural fracture under an in-slit temporary plugging condition and a device thereof are provided. The method includes steps of: acquiring physical parameters of stratum according to site geological data, and measuring a slit length L of a hydraulic fracture; dividing the hydraulic fracture into N unit bodies of equal length and numbering them sequentially; and dividing a total calculation time t into meter fractions of time with equal interval; calculating a width of each unit body in the hydraulic fracture at the initial time; calculating a fluid pressure in the hydraulic fracture at the k-th fraction of time; calculating a closed pressure at an entrance of the natural fracture on an upper side and a lower side of the hydraulic fracture at the k-th fraction of time; and determining whether the natural fracture is opened by a determining criteria based on the above calculation results.