CAJ | 학술논문

在定边地区富县组地层的构造特征、沉积相分布及砂体展布的分析基础上,从油源、油气运移路径及盖层等方面分析了富县组的油气成藏条件.分析认为：上三叠统延长组的深湖相泥岩为富县组提供油源,油气通过网络状的砂体向上运移,在构造和岩性圈闭中聚集;岩性圈闭是富县组油气成藏的主控因素;研究区沉积微相由西向东从砾砂质河道渐变为洪泛平原沉积,砂体厚度减薄,直至尖灭;定边东部地区较高,微幅构造发育,有利于形成上倾尖灭性岩性油气藏及岩性-构造油气藏.
재정변지구부현조지층적구조특정、침적상분포급사체전포적분석기출상,종유원、유기운이로경급개층등방면분석료부현조적유기성장조건.분석인위：상삼첩통연장조적심호상니암위부현조제공유원,유기통과망락상적사체향상운이,재구조화암성권폐중취집;암성권폐시부현조유기성장적주공인소;연구구침적미상유서향동종력사질하도점변위홍범평원침적,사체후도감박,직지첨멸;정변동부지구교고,미폭구조발육,유리우형성상경첨멸성암성유기장급암성-구조유기장.
Based on the analysis of the structural characteristics,the distribution of sedimentary facies and the spread of sand body of Fuxian Formation in Dingbian area;this paper analyses the oil and gas accumulation conditions of Fuxian Formation from the oil source,oil and gas migration path and cover etc..It is concluded that： the deep lacustrine mudstones of Upper Triassic provides oil sources for Fuxian Formation,oil and gas migrate upward through netlike sand and accumulate in structural and lithologic traps.Lithologic traps as the main controlling factors of the oil and gas accumulation of Fuxian Formation.The Microfacies of the studied area have a gradient of the sandy river gravel to floodplain from east to west,the thickness of sand body decreases,until the tip off.Because the east of Dingbian area is higher and develop swell structural,form updip pinch lithology reservoir and lithology-tectonic reservoir in the east of the studied area.