| Aonan oilfield is located in Zhaoyuan County of Daqing, Heilongjiang Province, which structure is in the central depression of northern Songliao basin and in the joint part of three second order structural zone among Daqing placanticline,Gulong Sag and Sazhao Sag. It’s oil-bearing area of116.32km2and geological reserves of1840.5×104t. the longitudinal reservoir development of Aonan oilfield changes greatly, although sand bodies develop continuously, it is difficult to exploit with the unified development by water injection among reservoirs which are strong heterogeneity. So it is necessary to study on geological feature and waterflooging characteristics of Aonan oilfield and provide evidence for the reasonable and high efficient water-injection of Aonan oilfield.It studys on the reservoir development characteristics, reservoir micro-characteristics and fracture charactertics of reservoir by the comprehensive utilization of seismic, geology logging, core sample, logging, oil testing, production test and laboratory experimental study. It is better depicted development characteristics of reservoir and distribution by using research methods of single-sand reservoir classification; It is further revealed the reservoir micro pore structure and development of water displacing oil for studying on reservoir micro-characteristics; It is more accurately reflected development status of crack and distribution by various means. At the same time, the initial waterflood project is optimized by reservoir engineering method and numerical simulation technology, it is understood not only the effective characteristics but also further development characteristics of oilfield waterfiooding through oil and water well production performance and monitoring data analysis, thus it is perfection of development project of waterflooging and allocation project of single well for Aonan oilfield, adjustment policy of development is established to make guidance for similar oilfields. |
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