Fine Structure Description Method Research And Its Application Of The West NAN Ⅱ,Ⅲ Zone In Daqing

The west of NAN Ⅱ,Ⅲ Zone located the highs of Saertu anticlinal structural,fault development extremely, the relations of intersection was complex, althoughSaNan oilfields has realized the3d development complete coverage of the earthquake,but only on seismic data can not fine description of the development characteristics ofsmall faults, small fault distribution is still uncertain, affected the waterflooddevelopment in this area, the polymer flooding, remaining oil distribution study. Thispaper make full use of existing logging and seismic interpretation, etc, on the basis ofgeological data, to the fault of the west of NAN Ⅱ,Ⅲ Zone geometry, kinematicscharacteristics, morphological and genetic analysis to determine the fault combination,for the well seismic interpretation still unclear understanding of fault zone, after opendisplay fluid to verify fault exists and the closure work. Combining with faultformation classification results and numerical simulation technology to constructperiod time division, do the research of the west of NAN Ⅱ,Ⅲ Zone, will help tohave a correct understanding of the distribution features of the fracture structure basisfor guiding SaNan oilfields development has important practical significance.The west of NAN Ⅱ,Ⅲ Zone reservoir affected by faults and tectonic faultblock zone existing in the actual development process imperfect injection-productionwell ratio is high, the fault block zone injection pressure rise fast, difficult injectionWells ratio is high, poor ability of injection-production problem, effect of polymerflooding development is affected by the larger. In comprehensive clarify the faultdistribution and structure formation in the study area, on the basis of through thecomprehensive analysis of fault block near the set of well pattern andinjection-production relation connected condition, reservoir development of differentwell pattern design of injection production well injection-production adjustmentprinciple, to improve the polymer flooding well pattern to the greatest extent, effect ofpolymer flooding effectively, thus improve the effect of polymer floodingdevelopment.