第24卷第2期 2010年4月
现代地质 GFOSCIFNCE
Vol.24Na.2 Apr.2010
松辽盆地北部他拉哈一齐家地区姚一段沉积
与成藏特征再认识
杨玉芳1,2，钟建华13，司维柳*，倪良田”，陈志鹏3
（1.中国科学院广州地球化学研究所，广东广州510640；2.中国科学院研究生院，北京100039
3.中国石油大学地球资源与信息学院，山东东营257061；4.大港油田勘操开发研究院，大津大港300280）
摘要：综合20口井岩心和496口井测井、录井及分析化验资料，对松辽盆地他拉哈-齐家地区姚一段萄花油层进行高分辨率层序地层研究，提出筋静花油层北、西部为同沉积构造抬升控制的底部缺失的层序地层新格架。研究区最有利相带砂体为窄前细的末梢道砂、薄尽河口坝及席状砂体，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。研究总结发现，砂体发育与岩性油气截分布均受控于一挠曲坡折带，坡折带以内为低水位体系域沉积质基中心，砂岩以薄相间，可形成地层超覆圈闭；坡折带之下为3个层序低水位和水进体系域一角洲前缘砂体叠合区，发育的砂岩较薄且连通性差，是多层位岩性测闭和上倾尖灭型调闭发育区；坡折带之上以水进体系域平原相及前缘相的大厚层河道砂体为主，但闪连通性好，油气易散失，不易形成岩性圈闭，而成为大范围的含水区。坡折带“控
关键词：沉积特征；成截特征；坡折带控油；他拉哈-齐家地区；松辽盆地
中图分类号：TE122.1
文献标志码：A
文章编号：10008527(2010)02-030110
Re-explanation for Deposition and Reservoir Characteristics of the First Member
ofYaojiaFormationinTalaha-QijiaAreaofSongliaoBasin YANG Yu-fang'-2, ZHONG Jian-hua'3, SI Wei-liu', NI Liang-tian', CHEN Zhi-peng
(1. Guangzhou Institate of Geochemistry, Chinese Academy of Sciemnces, Gusngshou, Guangdong 510640, China; 2. Graduate School of Chinese Academy of Sciences, Bejing100039, China; 3. lustitue of Earth Resources and Irformation, Unirersity of Petroleun, Dongying, Shandong257061, China;
4. Dagang Oifield Exploration and Deelopment Research Institute, Dogang, Tiarjins300280, China)
Abstract: By using the high-resolution sequence stratigraphy theory, through depositional dynamic analysis, the cores of 20 wells and 496 well logging data, Putaohua reservoir of the Talaha-Qijia area in Songliao Basin is divided as 1 long-term base level cycles, 3 medium-tem base level cycles, 8 short-term base level cycles, proposed a new framework with the sedimentary structure lifting control the north and west of Putaohua reservoir. Fine study of sedimentary characteristics reveals that the most favorable facies sandbody is narrow submarine riv-er sandbody, thin channel-mouth bar and sheet sanbody. In the northern half of the study area a large number of broad thick favorable submarine river sandbody is not oily but water-bearing zone. It is realized that sandbody development and distribution of lithologic reservoirs are controlled by a slope break. Area within slope break is the LST for the center of mass deposition, which is thick or thin layer of sandstone, and can form the strati-graphic overlapped traps.Area under the slope break is the delta front facies sandstone superimposed zone of LST and TST of 3 sequences with the development of thin sandstone and poor connectivity, and is a multi-layer aeeaeaaa channel sand body of TST.Its connectivity is good, so oil and gas are easily lost and difficult to form a lithologic
收稿日期：2009-07-20；改国日期：2009-11-15：责任编辑：孙义梅。
基金项目：国家重点基础研究计划"973"项月（2006CB202406）；教育部博士点基金项月（20050425515）。
作者简介：杨主芳，女，博士研究生，1977年出生，石油地质学专业，主要从事石油构造地质和油气田开发地质方面的研究工
作。Email；yufangyang2005@sina.come