南皮斜坡孔二段成藏模式与富集规律  

Hydrocarbon accumulation model and enrichment rules for the second member of Kongdian formation in Nanpi slope

作　　者：马红 刘子藏[2] 李洪香[2] 孙凤兰 官全胜[2] 田永[2] 苏沛强 刘晓燕 

机构地区：[1]中国石油渤海钻探第一录井公司 [2]中国石油大港油田公司勘探开发研究院 [3]中国石油大港油田公司勘探事业部

出　　处：《录井工程》2016年第3期75-78,89,共5页Mud Logging Engineering

基　　金：中国石油天然气集团公司重大专项"随钻电磁波成像与测录井解释支持系统研发"子课题"地质工程一体化支持系统"(2013E-38-09)

摘　　要：通过对沧东凹陷南皮斜坡构造特征及其砂体、成藏的控制作用研究,指出南皮继承性斜坡孔二段分布3种不同成因类型断裂(走滑断裂、同沉积断裂及继承性断裂),并且受燕山期构造翻转背景控制的古地貌呈沟谷相间的态势分布。认为古地貌凹槽区辫状河三角洲前缘富砂,其常规砂岩与湖盆区发育的泥质粉砂岩、白云岩、过渡岩类等致密储集层叠合连片,奠定连片成藏基础。详细阐述了南皮斜坡近源充注,源内砂体控藏新认识,构建斜坡区常规油藏聚集与远端细粒沉积区形成致密油叠加连片的油气富集模式。经有效指导勘探生产,部署实施预探井位10口,均见到良好油气显示并获得油流,形成整装规模增储区,成为大港油田增储上产的重点领域。By the study of the structural feature and its sandbody,control effects of hydrocarbon accumulation in Nanpi slope of Cangdong sag,the authors noted that three different genetic types of faults are distributed in the second member of Kongdian formation of Nanpi inherited slope(strike-slip fracture,contemporaneous fracture and succession fracture),and the palaeogeomorphology is controlled by Yanshan tectonic facing down background,it showed valley interbedded with trench.It was thought that braided river delta front of the palaeogeomorphology groove area enriched sand,and its normal sandstone stacked together with tight reservoirs,which are developed in lake basin,such as argillaceous siltstone,dolomite,transition rocks,etc.,they laid the contiguous area to form the accumulation.The paper elaborated the new understanding of near source filling and the sandbody control reservoiring within source in Nanpi slope,building a hydrocarbon accumulation mode of forming a tight oil superimposed contiguous area of the conventional hydrocarbon accumulation and deposition area of fine-grained in distal region of slope area.Through guiding the exploration and production effectively, well 10 preliminary prospecting wells were deployed,which gained better oil and gas shows and oil stream.It is the key storage area of increasing reserves and production in Dagang Oilfield.

关 键 词：致密油 岩性油藏 过渡岩类 孔二段 成藏模式 富集规律 

分 类 号：TE132.1[石油与天然气工程—油气勘探]