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| | Abstract | | We conducted a GPR monitoring to observe the extension of fractures created by hydraulic fracturing. At the same time, we estimated the fluid movement in unconsolidated sand. When the fracturing fluid infiltrated into the specimen, the fluid invaded to not only the empty pore but also the pore which is occupied by distilled water. Hence the distilled water is forced out and moves to the empty pore near the outer boundary of the region. By a migration modeling, we found that the relation between the pressure of the fracturing fluid and the formation of the fracture in real time. We could estimate the development of fracture and infiltrated region. |
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