Investigation of Non-Newtonian Characteristics of Water Flow in Micro-/Nanochannels and Tight Reservoirs

The characteristic scale of pore flow in tight reservoirs is generally the range 0.1 μm to 1 μm, which shows obvious micro- and nanoscale effect. traditional oil gas seepage theory cannot accurately describe law liquid nanopores. determination characteristics crucial development, layout, prediction oil. Therefore, a non-Newtonian fluid model established discuss confined heterogeneous pores microtubules reveal nonlinear water nanochannels reservoirs. Based on nanospace, under action shear stress was deduced. velocity variation nanochannel dense core analyzed, rate less than that predicted by macro theory. According experiment nanochannels, power-law verified. At same time, through rock core, used for fitting, parameters average radius were obtained, verified effectiveness model.