Three-phase relative permeability measurements are made experimentally by the steady-state method for WINSOR-III type micellar fluids.Comparisons are made between the two ways("O/M; W" and "O/M+M/Wn)by which the three-phase relative permeability curves are obtained ,The characteristics of the shape of the curves have been recogiused .Preliminary study of the effects of IFT and flow rate on the three-phase flow behavior has been made .It is established that phase saturations can be calculated from fractional flow rate for steadystate flow under ultra low IFT conditions.
The hydration rate of Class G net oil-well cement slurry and the slurry with retarder tartaric arid is measured respectively by the meth ods of electricai conductance and acidity, and then the retardation mechanis of tartaric acid is discussed.Experiment results show that the method of electrical conductance can illustrate the hydration prcccss of oil一well cement more thoroughly and mere really than that of acidity.
Based on the principle of digital image processing, an algorithm finding the grid point values of a griding on a contour is proposed in this paper, It is actually an inverse problem of the existing contour plottingproblem based on the given grid point values, The principle. and algorithm ofsolving the problem are discussed in detail, An example is given and somemain uses of the algorithm is introduced.
