TY - JOUR
T1 - Analysis of crack reopening behavior for hydrofrac stress measurement
AU - Ito, T.
AU - Hayashi, K.
N1 - Funding Information:
Acknowledgement - The authors wish to thank Mr. K. Kuroki for his help in preparing the experimental equipments. The work presented here was supported by the Ministry of Education, Science and Culture under Grant-in-Aid for Encouragement of Young Scientist (A)(No.04750069) and also partly under Grant-in Aid for International Scientific Research Program (No.0344023).
PY - 1993/12
Y1 - 1993/12
N2 - The relation among the so-called reopening pressure, in situ stresses and injection flow rate was clarified theoretically and experimentally for the case that a transverse crack is induced perpendicularly to a borehole axis in hydraulic fracturing stress measurements. The results are summarized as follows. The reopening pressure, i.e. the borehole pressure at which the borehole pressure - time history during pressurization clearly deviates from a linear relationship, is basically governed by the in situ compressive stress normal to the crack plane, Sv. Its magnitude decreases and approaches the magnitude of Sv with decreasing injection flow rate.
AB - The relation among the so-called reopening pressure, in situ stresses and injection flow rate was clarified theoretically and experimentally for the case that a transverse crack is induced perpendicularly to a borehole axis in hydraulic fracturing stress measurements. The results are summarized as follows. The reopening pressure, i.e. the borehole pressure at which the borehole pressure - time history during pressurization clearly deviates from a linear relationship, is basically governed by the in situ compressive stress normal to the crack plane, Sv. Its magnitude decreases and approaches the magnitude of Sv with decreasing injection flow rate.
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U2 - 10.1016/0148-9062(93)90101-I
DO - 10.1016/0148-9062(93)90101-I
M3 - Article
AN - SCOPUS:0027883440
SN - 1365-1609
VL - 30
SP - 1235
EP - 1240
JO - International Journal of Rock Mechanics and Minings Sciences
JF - International Journal of Rock Mechanics and Minings Sciences
IS - 7
ER -