松辽盆地新立油田泉三段沉积相研究

The Sedimentary Facies of Member-3 of Quantou Formation in Xinli Oilfield,Songliao Basin

系统研究了松辽盆地新立油田泉三段沉积特征、沉积微相及沉积演化。松辽盆地南部泉三段沉积时期,盆地基底缓慢沉降,地形平缓,湿润与干旱气候交替出现背景下形成曲流河沉积。识别出了边滩、废弃河道、河漫滩、天然堤、决口扇、泛滥平原等6种微相。绘制了沉积相平面展布图,为油田进一步勘探开发奠定地质基础。

The systematic studies of the sedimentary characteristics, sedimentary microfacies and sedimentary evolution of the 3rd member of Quantou formation in Xinli oilfield of Songliao basin show that during the deposition of the 3rd member, the basement of this basin was in slow settlement and gentle terrain, and the meandering river sediments were formed under the background of alternating humid and arid climate appearance. This paper identified 6 types of sedimentary microfacies, such as point bar, abandoned channel, flood land, natural le- vee, crevasse splay, flood plain, and presents the plane graph of sedimentary facies, which could be as a geological basis for further explora- tion and development in this oilfield.