Study of the Effect of Fracture Fluids Viscosity and Borehole Diameter on Hydraulic Fracturing Breakdown Pressure Using a Newly Developed True Triaxial Apparatus

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SHIRAZI H.; TORABI S.R.; MIRZAEI H.

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Journal: JOURNAL OF ROCK MECHANICS Year:2017 | Volume:1 | Issue:2 Page(s): 89-98

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Information Journal Paper

Title

Study of the Effect of Fracture Fluids Viscosity and Borehole Diameter on Hydraulic Fracturing Breakdown Pressure Using a Newly Developed True Triaxial Apparatus

Author(s)

SHIRAZI H. | TORABI S.R. | MIRZAEI H. | Issue Writer Certificate

Keywords

Hydraulic Fracturing

Injection Fluid

Borehole Diameter

Breakdown Pressure

Abstract

A new apparatus which allows laboratory Hydraulic Fracturing experiments under true triaxial compression was developed at Shahrood University and laboratory Hydraulic Fracturing experiments were conducted to investigate the dependence of Breakdown Pressure upon two factors which could influence the use of the hydrofrac technique for in-situ stress determinations namely: the viscosity of fluid and Borehole Diameter. Therefore, in this study, by using the new apparatus was examined if the fracture pressure will change with viscosity of fluids and Borehole Diameter. In this regard, Some 300 mm cube specimens of concrete were made and used in this study. It should be noted that, three steel rods of 30, 50 and 80 mm outer diameter were buried for a simulated borehole in the specimens. Meanwhile, 3 types of Hydraulic oil (46H, 68H and 100H) were injected to boreholes of different diameters. In this study, to examine the effect of viscosity of fracturing fluid and Borehole Diameter on Hydraulic Fracturing Breakdown Pressure, some tests were conducted. Results show that Breakdown Pressure decreases with increasing Borehole Diameter and also there is an inverse relationship between Breakdown Pressure and viscosity of fracturing fluid. In other words, it decreases with increasing viscosity of fracturing fluid...

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APA: Copy

SHIRAZI, H., TORABI, S.R., & MIRZAEI, H.. (2017). Study of the Effect of Fracture Fluids Viscosity and Borehole Diameter on Hydraulic Fracturing Breakdown Pressure Using a Newly Developed True Triaxial Apparatus. JOURNAL OF ROCK MECHANICS, 1(2 ), 89-98. SID. https://sid.ir/paper/268314/en

Vancouver: Copy

SHIRAZI H., TORABI S.R., MIRZAEI H.. Study of the Effect of Fracture Fluids Viscosity and Borehole Diameter on Hydraulic Fracturing Breakdown Pressure Using a Newly Developed True Triaxial Apparatus. JOURNAL OF ROCK MECHANICS[Internet]. 2017;1(2 ):89-98. Available from: https://sid.ir/paper/268314/en

IEEE: Copy

H. SHIRAZI, S.R. TORABI, and H. MIRZAEI, “Study of the Effect of Fracture Fluids Viscosity and Borehole Diameter on Hydraulic Fracturing Breakdown Pressure Using a Newly Developed True Triaxial Apparatus,” JOURNAL OF ROCK MECHANICS, vol. 1, no. 2 , pp. 89–98, 2017, [Online]. Available: https://sid.ir/paper/268314/en

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