The Fine Description Of Chang8Reservoir In Luol Block

Chang8reservoir in Jiyuan Oilfield is typical of low permeability reservoir, belongs to delta front sub-facies sedimentary; Underwater distributary channel is the main reservoir body; Compositional maturity is low, manifested as near provenance sedimentary characteristics. Using thin layer division and contrast, Chang8reservoir can be divided into eight small layer,where Chang811-1Chang811-2is the main layer of Chang81, and Chang822-1、Chang822-2is the main layer of Chang82.The system study has carrie on Chang8reservoir on geological structure characteristic, stratigraphic division and correlation, reservoir heterogeneity and pore structure characteristics and other aspects. Research have shown that interstitial material composition in Chang8reservoir in Jiyuan is high; particle size is mainly sand and particle separation is good. Chang8reservoir is given priority to microporous and micro larynx, reservoir physical property is poor. The study area has strong heterogeneity and natural fracture developed. Chang8reservoir in Jiyuan is weak lipophilic, sensitivity is weak and oil displacement efficiency is relatively high.Using factor analysis method, summarized six representative factors; Integrated use of factor analysis, cluster analysis and discriminant analysis, Luol blcok could be divided into4flow unit;Combine the characteristics of Chang8reservoir in Jiyuan oilfield, through a variety of modeling methods adaptability analysis, preferred suitable modeling methods and techniques for the target reservoir geological characteristics, using sequential indicator simulation method for geological modeling.