THERMOLOGGING PROBLEM WITH A GIVEN RADIAL OIL-VELOCITY PROFILE IN THE WELL SHAFT

摘要

With the use of the asymptotic method the thermologging problem with a given radial oil-velocity profile is presented in the form of a sequence of simpler problems containing different types of equations for corresponding expansion coefficients, remainder term, and boundary-layer functions. Analytical expressions for the zeroth and first expansion coefficients and boundary-layer functions taking into account the arbitrary radial oil-velocity profile have been constructed. It has been shown that the derived asymptotic formula makes the perturbation sources vanish in the averaged problem for the remainder term.