大庆石油地质与开发2018，Vol.37Issue(3)：29-36,8.DOI:10.19597/J.ISSN.1000-3754.201711041
鄂尔多斯盆地南部S205-S102井区长6油层组沉积相特征
CHARACTERISTICS OF THE SEDIMENTARY FACIES FOR OIL GROUP CHANG 6 IN WELL BLOCK S205-S102 IN SOUTH ORDOS BASIN
摘要
Abstract
Well Block S205-S102 is the new explored region in Yanchang Formation of South Ordos Basin,Oil Group Chang 6 is characterized by the short explored time and low researched degree.With the help of the core,thin section,analytical test,well & mud logging and so on,on the bases of the systematically-analyzed depositional symbols of the petrology,grain size characteristic,sedimentary structure and well-logging curves and so on,the regional sedimentary background was summarized and moreover the researches on the depositional phases and characteristics were conducted for Oil Group Chang 6 in Well Block S205-S102 of South Ordos Basin.The study achievements show that the group belongs to the gravity flow-lake depositional system with underwater reductive environment,the gravity flow facies and lacustrine facies are mainly developed,including three sub-facieses:sandy debris flow,turbidity body and semi-deep &deep lake,and moreover five kinds of the microfacieses:lobe,interlobe,turbidity channel,the edges among the turbidity channel and semi-deep & deep lake mud;The turbidity channel is widely stripped with NE-SW trending located in the middle study area,the sandy debris flow lobe is more isolated overlay on the turbidity channel,the semi-deep lake mud with the trending of surrounding the gravity flow is located in the central and western parts of the study area;The isolated lobe is developed best in Sub-oil Group Chang 64,the widest turbidity channel is located in Sub-oil Group Chang 63,the lobe in Sub-oil Group Chang 61 with the best connectivity is the thickest part of the sandbody,the sandbody in the turbidity channel overlaid by the lobe is best developed.The study achievements can provide theoretical basis for the exploration and development of the block or nearby regions.关键词
沉积相/砂质碎屑流舌状体/浊积水道/重力流/长6油层组Key words
sedimentary facies/sandy debris flow lobe/turbidity/turbidite channel/gravity flow/Oil Group Chang 6分类
能源科技引用本文复制引用
刘卉,尚有战,赵永刚,鬲新鹏,刘桂珍,李海飞..鄂尔多斯盆地南部S205-S102井区长6油层组沉积相特征[J].大庆石油地质与开发,2018,37(3):29-36,8.基金项目
国家科技重大专项计划项目“中生界延长组低渗透储层微观评价技术”(2011ZX05044-3) （2011ZX05044-3）
国家自然科学基金项目“煤层对砂岩地震反射特征的影响及其地震岩性学意义——以鄂尔多斯盆地山2段为例”(41372118) （41372118）
西安石油大学全日制研究生创新与实践能力培养项目“鄂尔多斯盆地南部黄陵地区长7段湖相深水沉积及储层特征”(YCS16212051). （YCS16212051）
