【摘要】 目的认识储层沉积特征、油藏分布特征与控制因素,指导油田勘探。方法依据测井曲线突变面(岩性突变界面)和主要沉积不连续面(冲刷面、煤线、煤层、底界沉积间断面等),结合岩相分析延长油田长6油层组古环境变化面、沉积韵律等。结果将其沉积微相划分为分流河道、决口扇、分流间湾、河漫沼泽等;砂体为北北东向展布,发育三级层序2个,层序I为湖相层序,由湖泛期湖进体系域(TST)和高位体系域(HST)构成,层序II为湖水退出本区后形成的以平原曲流河环境为主的沉积,是冲积层序,由低位体系域、水进体系域(TST)和高位体系域(HST)构成。结论冲积层序的低位体系域中三角洲平原分流河道砂体、湖相层序高位体系域中三角洲前缘水下分流河道砂体是油田的主要储集层段。更多还原

【Abstract】 A im To understand the sed imentary characteristics of reservoir,oil-gas d istribution and control factors in order to guide the exploration for oil field;M ethods Synthetic stud ies on the sequence development and its re-lationship with the oil-gas d istribution using sed imentary facies and d ivision of the sequence stratigraphy.R esu lts D ivid ing the m icro-sed imentary facies of oil field and understand ing the d istribution characteristics of sand bod ies;D ivid ing bedd ing sequence and revealing the development of sequences and its relationship with the oil-gas d istribu-tion;C onclu sion The main reservoir of oil field is the d istributary channel sand bod ies developed on the delta plain of the low stand system tract formed by the alluvial sequences.The d istributary channel sand bod ies under the water developed at the delta front in the high stand tract of lake facies sequences also is the important reservoir.更多还原