松辽盆地长垣以西高台子油层沉积特征与油气分布规律  

Oil and Gas Depositional Characteristic and Distribution Law of the Gaotaizi Reservoir in the Western Placanticline,Songliao Basin

作　　者：杨玉芳[1,2,3] 韩云洁 钟建华[2,5] 周永炳[6] 陈志鹏[5,6] 

机构地区：[1]中石化西北油田分公司,乌鲁木齐830011 [2]中国科学院广州地球化学研究所,广州510640 [3]中国科学院研究生院,北京100039 [4]东方地球物理公司研究院地质研究中心,河北涿州072751 [5]中国石油大学(华东)地球资源与信息学院,山东东营257061 [6]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《地质学报》2011年第8期1377-1388,共12页Acta Geologica Sinica

基　　金：国家重点基础研究计划"973"项目(编号2006CB202406);教育部博士点基金(编号20050425515)资助的成果

摘　　要：应用高分辨率层序地层学理论,通过对各级基准面旋回的沉积动力学分析,依据25口井岩芯和596口井测井、录井及分析化验资料,把松辽盆地长垣以西地区高台子油层划分为1个长期基准面旋回、5个中期基准面旋回、13个短期基准面旋回,提出了高台子油层北、西部为同沉积构造抬升控制的顶部缺失的层序地层新格架。对储层沉积特征进行精细研究,识别出两类特殊优质储集砂体:滨浅湖滩坝与滑塌浊积扇。证实区内最有利相带砂体为薄层的河口坝、席状砂、滩坝及浊积扇砂体,而研究区北半部大量宽泛的厚层优质河道砂却不含油,为大面积含水区。总结发现,研究区内发育多种类型岩性油气藏:砂岩透镜体油气藏、上倾尖灭油气藏、断层-岩性油气藏及不整合遮挡油气藏,且岩性油气藏的分布明显受控于沉积相带,可见,坳陷型盆地"相式控油"的理论在本研究区又一次得到极好地应用与深化。By using the high-resolution sequence stratigraphy theory,depositional dynamic analysis,and the cores of 25 wells and 596 well logging data,the Gaotaizi reservoir of the western Placanticline in Songliao basin is divided into 1 long-term base level cycle,5 medium-term base level cycles and 13 short-term base level cycle.This study proposes a new framework of sequences with top layer absent,in which the north and south of the Gaotaizi reservoir are controlled by lifting of syndepositonal structure.Detailed study of sedimentary characteristics recognizes two types of special high-quality sandstone reservoirs,beach bar of shore-shallow lacustrine and fluxoturbidite fan.Our study reveals that the most favorable facies sandbody is thin channel-mouth bar,sheet sanbody,beach bar and fluxoturbidite fan.However,high-quality thick favorable river sandbody in most northern section of the study area contains no oil,but a large amount of water.Our research found that a variety of types of lithologic reservoirs developed in this area;for example,sand lens reservoir,dumping pinch-out reservoir,fault-lithologic reservoirs and integrated reservoirs.Sandbody development and distribution of lithologic reservoirs are obviously controlled by sedimentary facies.Therefore,the ＂facies controlling＂ theory of depression basin was applied excellently and deepened again in this area.

关 键 词：松辽盆地 滩坝 滑塌浊积扇 相控论 

分 类 号：P618.13[天文地球—矿床学]