Research On Development Adjustment Numerical Simulation In C55Block Of Chaoyanggou Oil Field

Chaoyanggou is a fracturing low permeability oil field with high reserves which isdifficult to be developed, so it’s necessary to take refined development adjustment measures.This paper based on the sufficient learning about geological conditions and developmenthistory of Chao55Block. Establish the refined geological model using software Petrel, andthen using software Eclipse to build dual-media numerical model. According to the geologicalproperty and development property of this block, different sorts of remaining oil are dividedafter history matching and quantification analyzed. The effects of refined developmentmeasures on Chao55Block demonstration area should be evaluated, then according to theevaluation to conduct the follow-up development work.Basing on the quantification analyzed result of remaining oil, studying specificparameters for development adjustment measures. Analyzing convert injection opportunityand quantify proportion principle of new and original injecting well in the convertinginjection measures of injection-production system. Adopting the way that combining physicssimulation with numerical simulation to quantify injection allocation principle for differentlayers to the refined separate layer water injection technology, and judging invalid or loweffected injection areas. Studying the yield mechanism coming from the technology thatcombining the cyclic water injection with deep-shallow profile control, and confirminginterval between cyclic water injection and deep-shallow profile control and parametervariation of cyclic injection after using deep-shallow profile control measures.The results show that the injection allocation proportion of new and old injection wellsduring converting injection and injection allocation strength ratio of separate layer waterinjection sections will change with the changing of water cut phase. Different intervalsbetween cyclic water injection and deep-shallow profile control and parameter variation ofcyclic injection result in different parameter variation of cyclic injection. By studying refinedparameters of all kinds of development adjustment measures, recovery factor of lowpermeability reservoirs can be improved obviously, meanwhile, the theoretical basis can alsobe provided for development adjustment measures in the sites.