Simulation of Multi-component Thermal Fluid Flooding in Horizontal Well of Offshore Heavy Oil Reservoirs

Abstract

After many-turns of huff and puff of multi-component thermal fluid, only the heavy oil in a limited area near the wellbore is produced. However, the inter-well areas, namely the dead oil areas, are not influenced by multi-component thermal fluid. Therefore, it is necessary to carry out the research on multi-component thermal fluid flooding. The facility of thermal recovery 3D physical stimulation is adopted to carry out simulation of flooding in various well spacing of pseudo-line well pattern, and producer-injector spacing and parameters are optimized with numerical simulation. The results of physical simulation and numerical simulation results show that the effect of the 250m spacing of well pattern with injectior-productor ratio 1:3 is better than other well spacing, with maximum recovery of 56.02%. The research results provide a technical support for the offshore multi-component thermal fluid flooding experiment.