松辽盆地三肇凹陷葡萄花油层成藏规律  

FORMATION LAWS OF PUTAOHUA OIL RESERVOIRS IN SANZHAO SAG OF SONGLIAO BASIN

作　　者：席国兴[1] 

机构地区：[1]大庆油田有限责任公司第四采油厂,黑龙江大庆163511

出　　处：《大庆石油地质与开发》2012年第6期11-14,共4页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家大型油气田及煤层气开发科技重大专项课题（2011ZX05007-002）.

摘　　要：通过对三肇凹陷油的分布规律、成藏的主控因素和模式的研究认为，葡萄花油层成藏主要为断块和断层一岩性油藏2种类型。平面上，既可以分布在断裂密集带两侧，又可以分布在断裂密集带内部；剖面上，主要分布在构造高部位。油成藏与分布的控制因素主要有：①油源断裂控制着油的成藏与分布；②断裂密集带附近的正向构造是油聚集的有利区域；③地垒构造和断裂密集带交叉处是断裂密集带两侧和内部油富集的有利部位；④分流河道砂体为油提供了有利储集条件。油成藏的模式为青一段源岩生成的油在超压和浮力作用下沿油源断裂向上运移至葡萄花油层，在断裂密集带附近的正向构造内聚集成藏。With the helps of the studies of the distribution laws of the oil, the key controlling factors and modes of oil reservoir formation of Sanzhao Sag, there are mainly two kinds of reservoir formation in Putaohua oil layers ： fault blocks and fauh-lithological reservoirs. In horizon, the oil reservoirs are distributed in both the two sides and/or in the dense fault belts; in cross section, the oil reservoirs are mainly distributed in the peak of the structures. The key controlling factors of oil reservoir formation and distribution are shown as follows： （1）the faults in the source rocks control the oil reservoir formation and distribution; （2）the positive structures near the dense fault belts are fa- vorable areas for oil to accumulate; （3）between the cross part the horsts and dense fault belts are the favorable places for oil enrichment in two part of the belts ; （4） the distributary sandbodies provide much better oil accumula- tive space. The oil forming model is that under the actions of the overpressure and buoyance the oil generated in Qing No. 1 Member source rocks migrates upwards along the source-rock faults to Putaohua oil layers and accumu- lates in the positive structures near the dense fault belts and finally forms the oil reservoirs.

关 键 词：下生上储 油成藏 主控因素 葡萄花油层 三肇凹陷 松辽盆地 

分 类 号：TE122.1[石油与天然气工程—油气勘探]