Determination method for conglomerate oil reservoir polymer-flooding relative permeability curve
A technology of relative permeability and determination method, which is applied in the field of determination of relative permeability curves of conglomerate reservoirs by polymer flooding, and can solve problems such as excessive deviation of effective permeability.
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[0032] In this embodiment, a method for determining the relative permeability curve of polymer flooding in conglomerate oil reservoirs, taking well A1 in Karamay, Xinjiang as an example, includes the following steps:
[0033] (1) Calculate the comprehensive water cut f of the polymer flooding well w
[0034] f w = q w ρ w q w ρ w + q o
[0035] Where: f w is the comprehensive water cut of polymer flooding well, decimal; q w is the monthly water production, m 3 / d; ρ w is the polymer flooding water phase density, g / cm 3 ;q o is the monthly oil production, t / d;
[0036] (2) Establish a first-order linear fitting relation y 1 =...
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