Waterflood simulation recovery ratio test method considering energy flow in low-permeability reservoir
A technology of energy flow and testing method, applied in the directions of measurement, production of fluids, and earth-moving drilling, etc., can solve the problems of uneven distribution of irreducible water, influence of experimental accuracy, etc.
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[0018] In this example, the original formation pressure is 15MPa, the formation temperature is 50°C, the current formation pressure is 10MPa, the simulated oil viscosity is 5.04mPa·s, and the simulated crude oil volume coefficient is 1.197ml / ml.
[0019] A water injection huff and puff recovery test method considering energy flow in low-permeability reservoirs, which is completed by a core displacement device, which consists of a confining pressure pump 1, a core holder 7, a back pressure pump 2, an oil-water separator 18, a simulation Oil intermediate container 5, displacement pump 1 3, formation water intermediate container 6, displacement pump 2 4, and constant temperature box 19, the core holder 7 is connected to confining pressure pump 1, and its inlet port is connected to simulated oil intermediate container 5 and the displacement pump one 3, the outlet end is respectively connected to the back pressure valve 17 and the formation water intermediate container 6, the format...
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