METHOD FOR DETERMINING THE PROFILE OF FLOW OF FLUIDS AND PARAMETERS OF NEARBELL SPACE

摘要

A method for determining the profile of fluid influx and parameters of the near-wellbore space by temperature measurements along the wellbore, characterized in that after long-term operation of the well with a constant flow rate for a time sufficient to ensure that the duration of production is minimally affected by the rate of subsequent change in temperature of the fluids coming from the reservoir into the well, change the flow rate of the well, measure the pressure at the bottom of the well before and after the change in flow rate, measure the temperature of the well fluid near the upper boundary of the lowest reservoir, as well as lower and higher than the rest of the reservoir, plot graphs of time against temperature measured above the lower reservoir , and the derivative of this temperature according to the logarithm of the time elapsed after the well production rate is changed, the skin factor of the lower reservoir is found from the obtained graphs, after which, using the iterative procedure for the measured temperatures, they successively find temperatures of fluids entering the well from the overlying strata, and the relative flow rates and skin factors of the overlying strata are calculated.