Method for calculating turbulence and laminar flow partition boundary of near-wellbore zones of oil reservoirs

The invention provides a method for calculating a turbulence and laminar flow partition boundary of a near wellbore zone of an oil reservoir. The method comprises the following steps: calculating thespeed of any point of an equal-yield one-source one-sink oil reservoir; calculating the pressure of any point of the equal-yield one-source one-sink oil reservoir; solving a first-order derivative-acceleration of the speed relative to the distance, wherein the point with the fastest curvature change in the near wellbore area is a possible critical point; solving a second derivative-acceleration change rate of the speed relative to the distance, wherein the point with the fastest curvature change in the immediate vicinity of wellbore is a possible critical point; solving a first-order derivative of the pressure relative to the distance r, wherein the point with the fastest curvature change in the immediate vicinity of wellbore is a possible critical point; solving a second derivative of thepressure relative to the