松辽盆地东部物源的发现及其石油地质意义  

Discovery of Easter Provenance in Songliao Basin and Its Implications on Petroleum Geology

作　　者：潘树新[1,2] 卫平生[2] 王天琦[2] 梁苏娟[2] 赵志魁[3] 赵占银[3] 唐振兴[3] 崔海娜[3] 

机构地区：[1]成都理工大学沉积地质研究所,四川成都610059 [2]中国石油勘探开发研究院西北分院,甘肃兰州730020 [3]中国石油吉林油田公司,吉林松原138001

出　　处：《天然气地球科学》2011年第6期1021-1027,共7页Natural Gas Geoscience

基　　金：国家重点基础研究发展计划"973"项目(编号:2007CB209604)资助

摘　　要：松辽盆地白垩纪发育六大物源及11条主要水系,但对是否存在东部物源一直存在很大的争议。通过对分析化验、钻井及露头等资料的综合研究,在东南隆起带发现一支来自榆树方向的水系并命名为榆树水系。研究表明,榆树水系母岩来源于张广才岭印支期及加里东期花岗岩,该水系从泉头组到嫩江组一致继承性发育,主要以河流和三角洲沉积为主。榆树水系的发现彻底改变了前人关于松辽盆地东部无物源及无水系的认识。因此,这一发现为在松辽盆地东部寻找石油天然气储层开辟了新的领域,具有极为重要的石油地质意义。Cretaceous Songliao basin developed 6 large provenance and 11 major river systems,but the existence of the eastern provenance was much controversy.By heavy minerals,sorting coefficient and REE analysis of laboratory data,a new river named Yushu river was discovered in the southeast uplift.Studies showed that native rock of Yushu river came from Caledonian and Indosinian granite in Zhangguangcai Mountain.The river system developed from the Quantou Formation to the Nenjiang Formation is dominated by fluvial and delta deposits.The discovery of Yushu river completely changed the previous cognition that the eastern part of Songliao basin has no provenance and no river systems.At present,the Yushu river system plays an important role in Jilin oilfield production.Therefore,the discovery of eastern provenance and Yushu river will provide a new target for hydrocarbon reservoir exploration and development.

关 键 词：榆树水系 东部物源 张广才岭 石油地质意义 松辽盆地 

分 类 号：TE122[石油与天然气工程—油气勘探]