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扶余油层是松辽盆地朝长地区开发的主要目的层段,确定其幕式构造运动期次及其构造变形历史,对于圈闭形成演化、油气成藏分析以及外扩挖潜均具有十分重要的现实意义。通过构造发育史剖面图和古构造图编制,确定朝长地区扶余油层的幕式构造运动期次和构造变形特征。研究表明,朝长地区泉头组扶余油层自沉积开始至嫩江组沉积期为统一的坳陷区,其后经历了嫩江期末、明水期末、古近纪末3个主要的幕式构造运动期次。朝长地区的构造变形总体呈现东强西弱、南强北弱的特点。嫩江晚期至期末在朝长地区东南部形成构造雏形;明水期末形成构造幅度较高的长春岭背斜带和低幅度的朝阳沟阶地;古近纪末长春岭背斜带定型,发育长春岭、三站和五站背斜,而定型的朝阳沟阶地由朝阳沟背斜、翻身屯背斜等组成。
Fuyu oil layer is the main target interval developed in the Chaolong area of the Songliao Basin. It is of great importance to determine the duration of its episode tectonic movement and its tectonic deformation, and to analyze the formation and evolution of traps, the hydrocarbon accumulation analysis and the potential of outward expansion significance. Through the construction of the developmental history profile and the palaeotectonic map, the episodes of episodic tectonic movement and tectonic deformation in the Fuyu oil layer in the Changchang area were determined. The results show that the Fuyu oil layer of the Quantou Formation in the Changchang area has been a unified depression since the sedimentation of the Nenjiang Formation and has experienced three major episodic tectonic periods since the end of the Nenjiang period, the end of the Mingshui period and the end of the Paleogene Times. The tectonic deformation in the long area shows the weakening of the east and the west and the weakening of the south and the strong north. At the end of the Nenjiang period, a tectonic prototype was formed in the southeastern part of the DPRK. At the end of the Mingshui period, the Changchunling anticline and the Chaoyanggou terrace with a low amplitude were formed. The Changchunling anticline at the end of the Paleogene was endogenously developed and Changchun Ridge was developed , Three stations and five stations anticline, and the stereotyped Chaoyang ditch terrace by Chaoyang ditch anticline, turn Tuen anticline and other components.