CAJ | 학술논문

应用显微薄片、扫描电镜、X-衍射、包裹体测温等分析化验资料,根据镜质体反射率、埋藏史曲线、粘土矿物变化特征以及各种成岩现象和标志,综合划分和确定了金湖凹陷戴南组碎屑岩储层的成岩阶段.戴南组大部分处于中成岩 A 阶段,少量为早成岩 B 和中成岩 B 阶段.与成岩阶段相对应,戴南组储层孔隙类型也经历了从原生到次生的演化阶段,目前戴南组大部分以次生孔隙为主,保存少量原生孔隙.根据成岩阶段和孔隙演化进一步预测新庄1井区和天 X77井、关 X2井等井区为有利储层发育带.另外,根据成岩阶段的划分结果,反过来预测大部分地区下伏阜宁组有机质处于成熟阶段,是戴南组有利的油气来源,并推断秦 X2、天 X75、天 X92等井区戴南组早期经历了大的构造抬升运动和较强的剥蚀作用.
응용현미박편、소묘전경、X-연사、포과체측온등분석화험자료,근거경질체반사솔、매장사곡선、점토광물변화특정이급각충성암현상화표지,종합화분화학정료금호요함대남조쇄설암저층적성암계단.대남조대부분처우중성암 A 계단,소량위조성암 B 화중성암 B 계단.여성암계단상대응,대남조저층공극류형야경력료종원생도차생적연화계단,목전대남조대부분이차생공극위주,보존소량원생공극.근거성암계단화공극연화진일보예측신장1정구화천 X77정、관 X2정등정구위유리저층발육대.령외,근거성암계단적화분결과,반과래예측대부분지구하복부저조유궤질처우성숙계단,시대남조유리적유기래원,병추단진 X2、천 X75、천 X92등정구대남조조기경력료대적구조태승운동화교강적박식작용.
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.