In-situ stress measurement technology and field application based on micro-optical imaging measurement method

doi:10.1088/1755-1315/570/4/042011

	In-situ stress measurement technology and field application based on micro-optical imaging measurement method
	Wang,Yiteng 3; Wang,Chuanying 3; Han,Zengqiang 3; Wang,Chao 2,3; Hao,Haiyang 1
刊名	IOP Conference Series: Earth and Environmental Science
	2020-10-01
卷号	570 期号:4
ISSN号	1755-1307
DOI	10.1088/1755-1315/570/4/042011
英文摘要	Abstract In-situ stress is natural stress existing in rock masses. As an important basic parameter, accurate in-situ stress is highly beneficial to the theoretical research and engineering application of rock mechanics. In-situ tests in boreholes are the most direct and effective way to obtain in-situ stress. However, the high temperature and high water pressure testing environment in boreholes limits the application scope of measurement sensors. In this study, a micro-optical imaging measurement method is proposed. On the basis of this method, an aperture measurement device is developed, and a complete set of in-situ stress measurement technology is formed. Laboratory and field application tests are carried out. The results of the temperature and pressure test in a laboratory show that the in-situ stress test technology improves service temperature and pressure and offers an extensive application range. The field test on a shallow borehole in an iron mine roadway and a deep borehole in a shale gas exploration well reveals the deformation of the test boreholes in the process of stress relief. This result proves the feasibility of the in-situ stress measurement technology. On the basis of the theory of elasticity, in-situ stress is calculated with reference to the in-situ diameter deformation of the boreholes and the mechanical parameters of the rock core. A number of in-situ stress tests are carried out under different borehole depths, and the testing times are recorded. Results show that the application of wireline coring drilling technology speeds up the test process. Hence, it can boost the operability of the in-situ stress test. In sum, the in-situ stress measurement technology based on the micro-optical imaging measurement method is feasible and operable and may thus improve the application depth of the in-situ stress measurement method based on the stress relief method.
语种	英语
出版者	IOP Publishing
WOS记录号	IOP:1755-1307-570-4-042011
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/15598]
专题	中科院武汉岩土力学所
作者单位	1.Shale Gas Production Technique Service Company, Sinopec Oilfield Service Jianghan Corporation, Wuhan 430206, China 2.University of Chinese Academy of Sciences, Beijing 100049, China 3.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, Hubei 430071, China
推荐引用方式 GB/T 7714	Wang,Yiteng,Wang,Chuanying,Han,Zengqiang,et al. In-situ stress measurement technology and field application based on micro-optical imaging measurement method[J]. IOP Conference Series: Earth and Environmental Science,2020,570(4).
APA	Wang,Yiteng,Wang,Chuanying,Han,Zengqiang,Wang,Chao,&Hao,Haiyang.(2020).In-situ stress measurement technology and field application based on micro-optical imaging measurement method.IOP Conference Series: Earth and Environmental Science,570(4).
MLA	Wang,Yiteng,et al."In-situ stress measurement technology and field application based on micro-optical imaging measurement method".IOP Conference Series: Earth and Environmental Science 570.4(2020).