摘要
下扬子北部地区下古生界存在两套富有机质泥页岩。通过野外地质调查、岩心观察、老井复查、分析测试等方法手段,建立了页岩基干剖面,明确了页岩有机地球化学特征、储层特征及含气性,据此优选幕府山组底部、五峰组—高家边组底部页岩为优质页岩段。基于区内构造变形特征,认为南通—如皋、扬中—镇江、扬州—江都地区为页岩气保存有利区。最终,结合页岩平面分布特征、保存条件、页岩埋深等条件,指出幕府山组页岩有利区分布于镇江—扬中、黄桥、南通—如东地区;五峰—高家边组页岩有利区分布于镇江—扬中、泰州地区。
There are two sets of organic-rich mud-shales in the lower Paleozoic in the northern part of the lower Yangtze. According to field geological survey, core observation, old well review, and analytical test methods, it was established the shale typical profile. And then it was identified the organic geochemical characteristics, the reservoir characteristics and the gas-bearing properties of shale. On this basis, the shale of the bottom of Mufushan Formation and Wufeng-Gaojiabian Formation is preferably the high-quality shale section. According to the structural deformation characteristics in the area, it is believed that Nantong-Rugao, Yangzhong-Zhenjiang and Yangzhou-Jiangdu areas are favorable areas for shale gas preservation. Finally, combined with the conditions of shale plane distribution characteristics, preservation conditions, shale depth and so on, it was pointed out that the favorable areas of the Mufushan Formation shale were distributed in Zhenjiang-Yangzhong, Huangqiao, and Nantong-Rudong areas. And the favorable areas of the Wufeng-Gaojiabian Formation shale are distributed in Zhenjiang-Yangzhong and Taizhou areas.
作者
赵挺
段宏亮
ZHAO Ting;DUAN Hongliang(Exploration and Development Research Institute of Jiangsu Oilfield Company,SINOPEC,Yangzhou 225009,China)
出处
《复杂油气藏》
2019年第1期11-16,27,共7页
Complex Hydrocarbon Reservoirs
基金
国家油气重大专项任务<下扬子地区海相层系成藏条件及勘探评价>(2017ZX05005003-009)
中国石化科技部项目<苏北地区天然气成藏主控因素与勘探潜力研究>(P17011-2)
关键词
页岩
幕府山组
五峰-高家边组
构造变形
下古生界
shale
Mufushan Formation
Wufeng-Gaojiabian Formation
structural deformation
lower Paleozoic
