AVERAGE/INITIAL RESERVOIR PRESSURE AND WELLBORE EFFICIENCY ANALYSIS FROM RATES AND DOWNHOLE PRESSURES

摘要

Systems and methods for calculating reservoir characteristics, including well pressure and flow rates are disclosed. Plotting and monitoring a plot of pressure (p) and flow rate (q) as p/q on a y-axis and 1/q on an x-axis can provide insight into well characteristics with zero RMS error.

主权项

1. A method of calculating reservoir characteristics of a well, comprising:
obtaining a reservoir effective permeability, k; obtaining a reservoir net pay thickness, h; obtaining an initial reservoir pressure, Pi; obtaining a reservoir flow rate, q; obtaining a viscosity of oil in the well, μ; obtaining a formation volume factor, B; calculating a dimensionless parameter for wellbore pressure, PwD; and calculating a dimensionless number Pwf/q, according to the equation: Pwf/=Pi(1/q)−CμBPwD/kh, wherein C is a constant; and plotting the parameters p and q with p/q on a y-axis and 1/q on the x-axis.