2McDaniel B W, McMechan D E, Stegent N A. Proper use of proppant slugs and viscous gel slugs can improve proppant placement during hydraulic fracturing applications [J] . SPE 71661, 2001.
3Hallan S D, Last N C. Geometry of hydraulic fractures from modestly deviated well bores [J] .SPE 20656, 1991.
5Gruesbeck, C. and Collins, R. E. Particle transport through perforations [J] . SPE7006, 1978.
6van der Vlis A C, Haafkens R, Schipper B A, et al. Criteria for proppant placement and fracture conductivity [J] . SPE5637, 1975.
7Weijers L, Wright C A, Sugiyama H, et al. Simultaneous propagation of multiple hydraulic fractures-evidence, impact and modeling implications [J] . SPE 64772, 2000.
