THE CAUSES AND CONSEQUENCES OF HETEROGENEITY OF PRODUCTIVE CARBONATE FORMATIONS IN THE DESIGN AND DEVELOPMENT OF HEAVY OIL DEPOSITS (by the Example of Tatarstan Fields)
The results on the complex reservoirs investigations in carbonate masses of Tatarstan provide some evidence for the massive-bedded oil deposits. The field data and hydroexploration obtained confirm the hydrodynamic separation of layers. It is shown that a dramatic difference in filtration properties of Upper and Lower Tournaisian reservoirs can not operate a common filter. It is shown that a dramatic difference in filtration properties of reservoirs upper and lower tour can not effectively exploit their filter. Field data also show that the effect of the waterflooding of carbonate reservoirs often leads to negative results. It is noted slurred hydrodynamic connection oil deposits with underlying water-bearing collectors. Assessment requires carrying out special field studies, and ignorance leads to significant errors in the simulation.