Hydraulic fracturing stress measurement in underground salt rock mines at Upper Kama Deposit

Geodynamics and Stress State of the Earth's Interior 2017

Rubtsova, E.V.^1 ; Skulkin, A.A.^1

Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia^1

关键词: Horizontal stress;    In-situ stress field;    In-situ stress measurement;    Measuring points;    Salt rocks;    Vertical stress;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/134/1/012049/pdf
DOI  :  10.1088/1755-1315/134/1/012049

来源: IOP

【 摘 要 】

The paper reports the experimental results on hydraulic fracturing in-situ stress measurements in potash mines of Uralkali. The selected HF procedure, as well as locations and designs of measuring points are substantiated. From the evidence of 78 HF stress measurement tests at eight measuring points, it has been found that the in-situ stress field is nonequicomponent, with the vertical stresses having value close to the estimates obtained with respect to the overlying rock weight while the horizontal stresses exceed the gravity stresses by 2-3 times.