Oil filtration to a well in the presence of another fluid in a reservoir

摘要

The oil filtration to a well in the presence of another fluid in a reservoir is presented. In this case, the main consideration is given to the pumping regimes providing the maximum oil bleeding from a well without alien impurities. When simulating the filtration with mobile boundaries, these are the restrictions that have the principal significance that should be necessarily observed in setting the oil well production rate in order to prevent the appearance of fluids concentrated at the reservoir boundaries into it. Due to it, the decrease in the difference between the densities of the oil and the fluid at rest favors the destabilization of the boundary separating them; otherwise, its stability grows. As a possible way of solving such a problem, researchers consider the procedure of oil pumping from the well with a vertical shaft, the inflow in which can proceed through one of the lateral filters coming from the well shaft at different depths.