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Method for experimentally determining the conductivity of unpropped fracture in hydraulic fracturing of shale reservoir
Method for experimentally determining the conductivity of unpropped fracture in hydraulic fracturing of shale reservoir
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机译:实验确定页岩水库水力压裂中未分裂骨折的电导率的方法
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摘要
The invention discloses a method for experimentally determining the conductivity of an unpropped fracture in hydraulic fracturing of a shale reservoir, comprising: select an outcrop sample with a natural fracture in the shale reservoir, and cut the outcrop sample with along the extension direction of the natural fracture into no less than eight square rock slabs; use a laser scanner to obtain the rough topography data of the fracture surface of each square rock slab and calculate the area tortuosity; pick out the rock samples; model the rough surface of the selected rock samples; import the treated surface model into the engraving machine, and select the downhole core or outcrop rocks in the same horizon for repeated production; calculate the shear slippage at different positions of unpropped fracture according to the data of the shale reservoir; finally test the conductivity of the shale rock samples after shear slip.
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