Error analysis and discussion of determining the maximum horizontal principal stress by hydraulic fracturing based on the compliance analysis of testing system

被引：0
作者：
Yang Y. [1 ,2 ]
Sun D. [1 ,2 ]
Qin X. [1 ,2 ]
Li A. [1 ,2 ]
Sun W. [1 ,2 ]
Zhang C. [1 ,2 ]
Li R. [1 ,2 ]
Meng W. [1 ,2 ]
Chen Q. [1 ,2 ]
机构：
[1] Institute of Geomechanics, Chinese Academy of Geological Science, Beijing
[2] Engineering Technology Innovation Center of In-situ Stress, Ministry of Natural Resources, Beijing
来源：
Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering | 2024年 / 43卷
基金：
中国国家自然科学基金;
关键词：
error analysis; hydraulic fracturing method; re-opening pressure; rock mechanics; test system compliance; the maximum horizontal principal stress;
D O I：
10.13722/j.cnki.jrme.2022.1273
中图分类号：
学科分类号：
摘要：
The large error in the results of the maximum horizontal principal stress is a prominent problem in the in-situ stress measurement by hydraulic fracturing method. In this paper，the differences and applicability of several main formulas used to calculate the maximum horizontal principal stress are compared and analyzed on the basis of the domestic and foreign hydraulic fracturing in-situ stress measurements regulations or suggested methods. Taking the test system compliance as the main influencing factor，the error sources and physical mechanism that affect the calculation accuracy of the maximum horizontal principal stress are analyzed in detail and depth. On this basis，taking the measured hydraulic fracturing data of the deep-hole obtained from the granite borehole in Beishan，Gansu as an example，the fracture reopening process is numerically analyzed based on the KGD theoretical model, and the influence of system compliance on the calculation result of the maximum horizontal principal stress is quantitatively studied. Taking the theoretical calculation value of eliminating the influence factors of compliance as correction value，the measured data and heoretical correction valueof 6 testing intervals in the hole depth range of 18–930 m are given. The results show that the error of the maximum horizontal principal stress measurement results increases gradually with the increase of test depth due to the influence of the test system compliance. When the test depth is 930 m，the relative error of the measurement results is 24.55%. The research results can provide a reference for the error problem of the maximum horizontal principal stress measurement results in relevant engineering applications，also provide a new idea and technical approach for the error analysis and further improvement of the reliability of the hydraulic fracturing in-situ stress measurements. © 2024 Academia Sinica. All rights reserved.
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页码：3385 / 3396
页数：11
相关论文
共 54 条
[11]  
LIU Yunfang, In-situ 3-dimensional stress measurements by hydraulic fracturing technique[J], Chinese Journal of Rock Mechanics and Engineering, 10, 3, pp. 246-256, (1991)
[12]  
CHEN Qunce, SUN Dongsheng, CUI Jianjun, Et al., Hydraulic fracturing stress measurements in Xuefengshan deep borehole and its significance[J], Journal of Geomechanics, 25, 5, pp. 853-865, (2019)
[13]  
WU Aiqing, HAN Xiaoyu, YIN Jianmin, Et al., A new hydraulic fracturing method for rock stress measurement based on double pressure tubes internally installed in the wire-line core drilling pipes and its application[J], Chinese Journal of Rock Mechanics and Engineering, 37, 5, pp. 1126-1133, (2018)
[14]  
BREDEHOEFT J D, WOLF R G, KEYS W S，, Et al., Hydraulic fracturing to determine the regional in situ stress field in the Piceance Basin，Colorado[J], Geological Society of America Bulletin, 87, 2, pp. 250-258, (1976)
[15]  
HAIMSON B C，, ZHAO Z., Effect of borehole size and pressurization rate on hydraulic fracturing breakdown pressure[C], Rock Mechanics as a Multidisciplinary Science, pp. 191-199, (1991)
[16]  
CUISIA T, HAIMSON B C., Scale effects in rock mass stress measurements[J], International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts, 29, 2, pp. 99-117, (1992)
[17]  
WANG Chenghu, SONG Chengke, XING Borui, Compliance of drilling-rod system for hydro-fracturing in situ stress measurement and its effect on measurements at great depth[J], Geoscience, 26, 4, pp. 808-816, (2012)
[18]  
WANG Chenghu, WANG Rentao, WANG Chunquan, Development of multiple-diameter core hydraulic fracturing machine to test tensile strength of rocks[J], Chinese Journal of Rock Mechanics and Engineering, 36, pp. 3321-3331, (2017)
[19]  
CHANG C D, OH Y K，, Et al., Hydraulic fracturing in situ stress estimations in a potential geothermal site，Seokmo island，South Korea[J], Rock Mechanics and Rock Engineering, 47, 5, pp. 1793-1808, (2014)
[20]  
WANG Chunquan, WANG Chenhu, JIANG Yinghao, Et al., Comparative analysis of determinating the maximum horizontal principal stress based on different tensile strength of rocks[J], Chinese Journal of Underground Space and Engineering, 13, 1, pp. 41-47, (2017)
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