The Injection-Production Adjustment Technology of Chang 6 Reservoir in Ansai Oil Filed

Continuous composite father was made on Chang 6 reservoir of Ansai low permeability oil field, which made combined decline rate decline yearly, and made old well keep continuous stable productivity rate. According to reservoir characteristic and development practice, the main injection-production adjustment technology of injection development in Ansai oil filed was summarized, which are early enhanced injection, unstable injection, synchronizing or ahead injection, injection along fracture, enhance fluid productivity index in high water aquifer, seepage flow field change, well pattern crowding, injection profile adjustment, fluid-production profile adjustment and so on. By means of these methods single well productivity and final recovery was increased.