Remaining Oil Distribution Rule Research Of Shahejie Formation For Ma19Block

Remaining oil distribution rule research is an important topic throughout the entirereservoir development, the research level directly related to the exploitation levels andbenefits of oilfields, especially for anaphase level reservoir, this work is more important.Ma19block is a complicated fault-block Reservoir,after40years development,it has entered in thehigh water-cut period. Due to the complexity of geological conditions, Combined the longdevelopment time, the distribution of oil and water is complex, So, it is necessary to dodeeply research for remaining oil distribution rule,thus carrying out oil secondarydevelopment, makes a further increase on exploitation levels and benefits of oilfields,andprovide a good reference to the approximate reservoirs.This artiele is based on the area of core，drilling，logging and other features withhigh-resolution data，established a intensive researeh of stratigraphic division, well logginginterpretation, determine structural features and micro-faeies. the study of a single layer offine sand-level classifieation and contrast，established high-resolution stratigraphic frameworkof all area;through the relationship between lithology and electrical，setup log-phase mode，and then layer by layer by the conduct of the single well well The fine miero-identifieation,atlast phase combination of plane，draw time unit flat sedimeniary facies map。In the basis ofsedimeniary facies，researeh the deposition time of each unit of reservoir heterogeneity andflow unit sand through geologieal modeling direetly refleet changes in reservoir propertiesand characteristies of oil changes。And applied to3-d numerical modeling technology,established a geological model of Ma19block, intuitive and image shows the oil and waterdistribution rule in underground.By analyzing, it is considered that the main block of Ma19still is the the main remainingpotential area. The distribution of remaining oil in area is primarily in the corner and highlevel of the structure, the part further water injection well;vertical distribution is S1下Ⅷ、Ⅸ Ⅹ oil layer group, Though Ⅻ oil layer group is in low remaining oil,but with highreserves, Especially near in ma256well.Finally, according to the main principle that preferuplifted portion of structural, relatively high remaining oil, reservoir thickness is greater than15m, single well controlled reserves remaining more than80000tons, and don’t disturb nowwell pattern,2exploitation wells have been deployed, could enhancee the rate of oilproduction and exploitation benefit after implemented.