莫里青油田双一段沉积相研究  

Sedimentary facies of the first member of Shuangyang Formation in Moliqing Oilfield

作　　者：赵磊 胡源[2] 刘双双 张琪 孙治华 

机构地区：[1]中国石油华北油田公司勘探开发研究院,河北任丘062552 [2]中国地质大学(北京)能源学院,北京100083 [3]延长石油集团研究院,陕西西安710000 [4]东方地球物理勘探有限责任公司华北物探处,河北任丘062552

出　　处：《断块油气田》2014年第3期314-317,共4页Fault-Block Oil & Gas Field

基　　金：国家自然科学基金项目"仿射坐标系下矢量波场分离与地层裂缝预测方法研究"(41104084);中国石油科技创新基金项目"煤层气储层多波联合AVO反演研究"(2011D-5006-0303)

摘　　要：岩性油气藏已成为莫里青油田的重要勘探目标,其中双一段又是重点目的层段。通过详细观察双一段井钻取的岩心,进行了岩相划分、沉积构造、剖面结构及测井相分析,进而将研究区双一段划分为扇三角洲相和湖相沉积。通过研究区地震属性和融合属性的对比,认为融合属性能较好地反映单井情况,并在此基础上完成了双一段研究区的沉积相平面图。研究表明:受物源和古地貌控制,不同时期、不同位置的沉积相存在差异。层序Ⅰ时期,沉积活动主要分布在研究区北部,以扇三角洲沉积为主;层序Ⅱ时期,扇三角洲主要发育在研究区西部,其他地区以湖相沉积为主。该研究成果为圈闭评价和油气勘探提供了重要的地质依据。Searching for lithologic reservoir has become an important problem in Moliqing Oilfield. The first member of Shuangyang Formation is an important interval of interest. This paper analyzes the sedimentary structure, section structure, log facies and lithofacies after a detailed observation and description of rock cores from the first member of Shuangyang Formation in Moliqing Oilfield. The first member of Shuangyang Formation in study area can be divided into the sedimentary facies of fan delta and lake. The blending attribute reflects the single well situation better than other attributes. This paper makes the sedimentary facies map of the first member of Shuangyang Formation in the study area. It is believed that there are differences in sedimentary facies at different geologic periods and in different areas because of the effect of provenance and paleogeomorphology. The north part of study area is fan delta in sequence Ⅰ, and the majority of sequence Ⅱ is lake deposition and the fan delta can be found in the west. The results can provide the important geological references for stratigraphic trap evaluation and oil and gas exploration.

关 键 词：沉积相 地震属性 双一段 莫里青油田 

分 类 号：TE121.32[石油与天然气工程—油气勘探]