松辽盆地南部大情字井地区油气分布控制因素分析

ANALYSIS OF HYDROCARBON DISTRIBUTION IN DAQINGZIJING AREA OF THE SOUTHERN SONGLIAO BASIN

杨明达 杨铭辉 唐振兴 汪莹汇 初霞 王金峰

YANG Mingda YANG Minghui TANG Zhenxing WANG Yinghui CHU Xia WANG Jinfeng

中国地质大学, 北京, 100083 2. 北京鼎诚信技术发展有限责任公司, 北京, 100083 3. 中国石油, 吉林石油分公司, 勘探开发研究院, 吉林, 松原, 138001

China University of Geosciences, Beijing 100083, China 2. Beijing Bestfaith Technology Development Co. Ltd, Beijing 100083, China 3. Research Institute of Petroleum Exploration and Development, Jilin Oilfield, CNPC, Songyuan, Jilin 138001, China

大情字井地区是松辽盆地南部近几年发现的、具有超亿吨级储量规模的大型含油区.经构造、沉积、储层、成藏模式等研究证实,有效烃源岩与砂体的叠合范围宏观上控制了油气的分布范围;油气分布主要受控于三角洲前缘相水下分支河道、河口坝型砂体,岩性控制油气分布,储层物性、断层、低幅度构造控制油气富集高产.保康三角洲前缘砂体与大情字井地区向斜型的构造背景配置形成多种类型油气藏,使该区成为叠加连片、复合型的岩性油藏含油区.

Daqingzijing is a big oil bearing area with over 100 million tons of oil discovered in recent years in the south of the Songliao Basin.Based on analysis of structural,sedimentary,reservoir and oil-forming characteristics,it has been concluded that the distribution of efficient source rocks and sandbodies had controlled the distribution of oil and gas.Oil and gas were mainly inhabited in the distributary channel and mouth bar of deltaic front.Reservoir properties,faults and low-amplitude structures controlled the accumulation of oil and gas.The combination of Baokang deltaic front sandbody and Daqingzijing syncline resulted in different types of oil pools and a wide development of lithologic oil reservoirs.

https://doi.org/10.11781/sysydz200303252