TY - GEN
T1 - Determination of the minimum horizontal principal stress from pressure decay after breakdown in hydraulic fracturing
AU - Ito, Takatoshi
AU - Hayashi, Kazuo
PY - 1991/12/1
Y1 - 1991/12/1
N2 - A new method is presented for determining the minimum horizontal principal stress from the pressure decay curve after breakdown during hydraulic fracturing with a constant injection flow rate. The method is developed by the analysis of the growing process of vertically created cracks during hydraulic fracturing being based on the linear fracture mechanics. The method utilizes the plot of the downhole fluid pressure vs the inverse of the cubic root of time since breakdown. The plot fits to a straight line. The line is extrapolated to the time when the time since breakdown is infinite. The pressure value evaluated by the extrapolation gives the magnitude of the minimum horizontal principal stress. In order to verify the present method, laboratory hydraulic fracturing experiments were performed. The results show that the method determines the minimum horizontal principal stress within the error of about 10%.
AB - A new method is presented for determining the minimum horizontal principal stress from the pressure decay curve after breakdown during hydraulic fracturing with a constant injection flow rate. The method is developed by the analysis of the growing process of vertically created cracks during hydraulic fracturing being based on the linear fracture mechanics. The method utilizes the plot of the downhole fluid pressure vs the inverse of the cubic root of time since breakdown. The plot fits to a straight line. The line is extrapolated to the time when the time since breakdown is infinite. The pressure value evaluated by the extrapolation gives the magnitude of the minimum horizontal principal stress. In order to verify the present method, laboratory hydraulic fracturing experiments were performed. The results show that the method determines the minimum horizontal principal stress within the error of about 10%.
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M3 - Conference contribution
AN - SCOPUS:0026397108
SN - 0934412693
T3 - Transactions - Geothermal Resources Council
SP - 483
EP - 488
BT - Transactions - Geothermal Resources Council
PB - Publ by Geothermal Resources Council
T2 - 1991 Annual Meeting of the Geothermal Resources Council
Y2 - 6 October 1991 through 9 October 1991
ER -
