Experimental study on the pseudo threshold pressure gradient of supported fractures in shale reservoirs
Jidong Gao,
Weiyao Zhu,
Aishan Li
et al.
Abstract:Pseudo threshold pressure gradient (PTPG) exists in the propped fractured reservoir, but its nonlinear flow law remains unclear. The effects of the mineral composition of shale and microstructure of fracturing fluid on PTPG were analyzed by X-ray diffraction and liquid nitrogen quick-freezing method. The results demonstrate that a proppant with a large particle size is more likely to form an effective flow channel and reduce liquid flow resistance, thus decreasing PTPG and increasing conductivity. The polymer … Show more
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