f New Log Analysis Technology for Evaluating Bitumen Reservoirs

Bitumen fields feature a complicated mechanism by which reservoirs are formed. Of most interest are bed and lenticular-bed reservoirs sited at depths down to 400 m, since the largest bitumen reserves are related to those reservoirs. The confinement of such reservoirs to shallow water sediments of the lagoon and bar types defines the specific features of reservoir-beds interlayer texture, varied thickness of reservoirs up to wedging out. By and large such reservoirs are characterized by the occurrence of gas accumulations, bitumen viscosity varying in depth and extension, alteration of various bitumen-saterated interlayers and bitumen- ree and water-saturated ones.