PROBLEMS OF DEVELOPMENT OF LARGE AND UNIQUE OIL FIELDS IN RUSSIA DURING THE LATE STAGE EXPLOITATION AND QUESTIONS OF GEOPHYSICAL CONTROL

摘要

1. The analysis of the largest and unique fields development in Russia showed the high efficiency of the designed stimulation systems . These systems allowed to obtain the high technological characteristics. 2. The improvement of stimulation systems, conversion from 7-rowed and 5-rowed to 3-rowed well spacing, introduction of block-square and selective flooding allowed to rise the efficiency of development at the late stage. 3. The application of barrier flooding in combination with pattern and block flooding allows to develope the wide undergas zones with small thickness of oil saturated part of reservoir profitably. 4. The two-sided barrier flooding with the sepatation of undergas zones in independent units of development is effective in conditions of development of wide undergas zones of gas-oil reservoirs. 5. The unstationary flooding (cyclic and with alteration of filtration flows) is the promising method of development control. This method is characterized by wide possibilities, it can be used for any stage of development. 6. The geophysical control for development of oil and oil-gas fields is widely used in Russia, it allows to solve many problems in the process of designing of development.The reservoir tomography acquires a great importance, it allows to define in dynamics the current oil saturation for area and volume of productive reservoir, that is, to accomplish the interwell sounding. 7. The application of the physical-chemical methos of stimulation in bottom-hole formation zones of producing and injecion wells allows to accomplish the development control of productive reservoirs. In this case the early nondrained interbeds are involved and, thereby, the water cut and volumes of pumping water are decreased.