QUANTITATIVE CHARACTERIZATION FOR COMPLEX OIL AND WATER INTERFACE MODELING IN OFFSHORE SUPER HEAVY OILFIELDS

A method to better identify the complicated oil/water interface in geological modeling and reservoir numerical simulation is proposed in this paper for extremely heavy oil. Via the simulation of 3d distribution of oil/water interface, the construction of oil/water partition property field and the simulation of water saturation, a final water saturation model is constructed, which can accurately define the complicated oil and water distribution pattern. The definition of complex oil/water interface in reserve fitting and reservoir numerical simulation may be realized by using the final water saturation model instead of oil/water interface. In the LD oil field, the complex problem of oil/water interface presentation was solved by using the method in geological modeling and numerical simulation for oilfield development planning. It can also provide a reference for other similar oilfields.