【作者】 孙万军；

【导师】 史晓颖；

【作者基本信息】 中国地质大学（北京） ， 地层学及古生物学， 2007， 博士

【摘要】 通过30余口井岩芯和5条野外地质剖面观察,结合地质、地震、测井和分析化验资料,建立了松辽盆地长岭凹陷地层、岩性、物性和试油等12类数据库,编制各类成果图件100余张,解释地震剖面1000余千米。以典型油气藏解剖为基础,研究储层类型和几何形态,分析生储盖匹配关系及油气充注过程,对资源潜力及勘探前景作出科学评价,并运用物探技术预测有利勘探区带,指出岩性油气藏是今后勘探开发的重要对象。在此基础上,结合已有勘探成果,研究大型湖盆富油凹陷区三角洲油气成藏理论,总结油气聚集规律,为类似盆地勘探提供指导依据。论文以含油气系统理论为指导,综合运用地质和地球化学资料进行含油气系统研究,描述系统的静态地质要素,分析系统中油气成藏的动态作用过程,重点研究长岭凹陷生烃潜力和油气的运聚过程。结合盆地模拟工作,科学评价研究区油气资源潜力,指出了有利的勘探目标。取得了以下主要成果和认识:1.以盆地综合模拟为主要手段,进行含油气系统的分析,研究认为本区的两套烃源岩层各有千秋,青山口组烃源岩丰度高,类型好,由南向北逐渐增厚,成熟度已经达到大量生排烃阶段,Ro值在0.8～1.0%之间;嫩江组烃源岩的质量和厚度好于青山口组,但成熟度较低,影响了生烃量。2.通过含油气系统时空动态分析,系统总结了生烃史、排烃史以及油气成藏的关键时刻,并应用多种手段进行成藏期次的研究,结合油源对比及埋藏史的研究结果,建立了各体系域沉积砂体与油气分布的时空配置关系。3.系统总结了不同沉积体系内油气分布规律与高产富集控制因素,对不同层位的有利油气聚集相带进行了预测。利用三维地震资料,结合钻井资料,展开砂体预测工作,预测砂体空间展布,结合构造、断层分布规律及含油气系统动态地质作用进行油藏描述,预测有利目标。4.大情字井油田是长岭凹陷区内的一个大型整装岩性油藏,油藏的分布具有很大的隐蔽性。新理论、新技术、新方法的综合运用,大大加速了隐蔽油气藏的勘探进程,取得了良好的经济效益和社会效益。更多还原

【Abstract】 Guided by petroleum system theory, this thesis systematically uses geological and geochemistry data to do a research on petroleum system, describes the dynamic characteristics of the system, focuses on hydrocarbon producing potential and oil migration and accumulation processes; based on the dissection of exemplary reservoirs, analyzes producing and reservoir and cap configuration, as well as filling process, studies reservoir layer type and geometrical shapes, predicts favorable exploration zone utilizing geophysical technology, makes scientific appraisal of resource potential and exploration prospect. Negative structures are the vital exploratory and producing target in the near future. Based on these researches, combining with the current exploratory results, the study that reveals accumulation theory and controlling rules of incline delta within giant lacustrine basin and summarizes procedures and methods on how to explore and research, provides guidance for the similar basins exploration.The study comprehensively analyzes substantial geological, well logging, seismic and other experimental data, finishes observation of more than 30 wells’core and 5 field geological profiles, sets up 12 kind of database including strata and lithology and oil test, etc. makes more than 100 maps of all kinds, interpret more than 1000 meter long seismic profiles, submits reports with more than 80 thousand characters. The project basin models Changling subsidence, analyzes oil accumulation process and distribution patterns, make scientific appraisal of resource potential, pinpoints favorable facies and exploration targets, accomplishes the follows:1、Taking comprehensive basin modeling as the main method, analyzes petroleum system, concludes that the two suits source rock have their own characteristics, Qinshankou formation source rock with high abundance and good kerogen type, becomes thicker northwards, maturity has already comes to large amount discharge phase, and Ro value is between 0.8 and 1.0; Nenjiang formation source rock gets better quality and more thicker than Qinshankou formation, but lower maturity affects its hydrocarbon produced.2、According to spatial and temporal dynamics analysis of petroleum system, systematically summarizes hydrocarbon producing and discharging history, as well as critical moment, also applies various methods to study oil accumulation periods, with oil source correlation and bury history results, establishes spatial and temporal configuration relations in different depository system tracts sand and petroleum distribution.3、Systematically summarizes oil distribution pattern and high production controlling factors in different depository systems, predicts facies favorable to accumulate oil in different layers. Utilizing 3D seismic data, together with borehole data, predicts sand spatial distribution, fatherly combines structure and fault distribution pattern and petroleum system dynamics to make reservoir description, predicting favorable targets.4、Comprehensive application of New theories, new technology and new methods, dramatically accelerates the exploration process of subtle oil pools. Daqingzijing oilfield is a giant full load lithological reservoir in incline areas of Changling subsidence, which distributes with great subtlety.The study systematically summarizes petroleum accumulation mechanism and research methods in inline delta of giant lacustrine basin, providing theory accordance for the next exploration strategy in Jilin Oilfield. This study will undoubtedly be the technical support for optimization of the exploratory targets in the eleventh five years.更多还原