石油实验地质Issue(1)：53-59,7.DOI:10.11781/sysydz20130109
苏北盆地金湖凹陷戴南组成岩阶段划分及其油气地质意义
Diagenesis stage division and petroleum geologic significances of Dainan Formation in Jinhu Sag, Northern Jiangsu Basin
摘要
Abstract
Based on the analysis and testing data of microscopic slice, scanning electron microscope (SEMP), X-ray diffraction and fluid inclusion microthermometry, the diagenesis stage of clastic reservoirs of the Dainan Formation in the Jinhu Sag has been divided and confined according to vitrinite reflectance, buried history curve, and the variation of clay mineral as well as various diagenesis phenomena and marks. Most of the Dainan Forma-tion is in A phase of the middle diagenesis stage, and less in B phase of the early diagenesis stage and B phase of the late diagenesis stage. Corresponding to diagenesis stage, pore types in the Dainan Formation also evolve from primary to secondary ones. At present, secondary pores account for a large amount in the Dainan Formation while primary pores are seldom found. It is predicted that the areas around wells Xinzhuang 1, Tian X77 and Guan X2 are favorable for reservoir formation. Based on the division of diagenesis stage, the organism in the un-derlying Funing Formation in most of the study area is predicted matured as the main hydrocarbon source rocks of the Dainan Formation. And it is inferred that the Dainan Formation in the areas around wells Qin X2, Tian X75 and Tian X92 has encountered strong structural uplift and erosion during the early buried stage.关键词
成岩阶段划分/镜质体反射率/埋藏史曲线/孔隙演化/戴南组/金湖凹陷/苏北盆地Key words
division of diagenesis stage/vitrinite reflectance/buried history curve/pore evolution/Dainan For-mation/Jinhu Sag/Northern Jiangsu Basin分类
能源科技引用本文复制引用
张琴,朱筱敏,董国栋,毛凌,杨立干,陈青云..苏北盆地金湖凹陷戴南组成岩阶段划分及其油气地质意义[J].石油实验地质,2013,(1):53-59,7.基金项目
江苏油田科技攻关项目“金湖凹陷龙岗-汊涧地区戴南组砂体成因及储层评价”(G071609ZS0027)资助 （G071609ZS0027）
