| Title | Fracture Opening/Propagation Behavior and Their Significance on Pressure-Time Records During Hydraulic Fracturing |
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| Authors | T. Kojima, Y. Nakagawa, K. Matsuki, and T. Hashida |
| Year | 1992 |
| Conference | Stanford Geothermal Workshop |
| Keywords | |
| Abstract | Hydraulic fracturing with constant fluid injection rate was numerically modelled for a pair of rectangular longitudinal fractures intersecting wellbore in an impermeable rock mass, and numerical calculations have been performed to investigate the relations among the form of pressuretime curves, fracture opening/propagation behavior and permeability of the mechanically closed fractures. The r e s u l t s have shown t h a t both permeability of the fractures and fluid injection rate significantly 'influence the form of the pressure-time relations on the early stage of fracture opening. Furthermore i t has been shown t h a t wellbore pressure during fracture propagation is affected by the pre-existing fracture length. |