CAJ | 학술논문

渤南油田下第三系沙河街组沙三段9砂层组的浊流—湖泊沉积由2个四级层序和14个五级层序组成。每个四级层序的形成是碎屑物质供应由充分、中等到匮乏和湖平面由快速下降、缓慢下降、缓慢上升到快速上升共同作用的结果，其中碎屑供应中等与湖平面较为稳定相配合最有利于孔渗性好的砂岩储层的形成。经综合研究后认为，四级层序Ⅰ、Ⅱ的孔渗性好的储层在研究区的东南部、南部较发育。
발남유전하제삼계사하가조사삼단9사층조적탁류—호박침적유2개사급층서화14개오급층서조성。매개사급층서적형성시쇄설물질공응유충분、중등도궤핍화호평면유쾌속하강、완만하강、완만상승도쾌속상승공동작용적결과，기중쇄설공응중등여호평면교위은정상배합최유리우공삼성호적사암저층적형성。경종합연구후인위，사급층서Ⅰ、Ⅱ적공삼성호적저층재연구구적동남부、남부교발육。
The ninth sandbody group of the third section of the Shahejieformation of Paleogene system in the Bonan Oilfield could be divided into two fourth-order sequences and fourteen fifth-order sequences. The clastic supply from abundance, moderate to deficiency and the lacustrine change from quickly falling, slowly falling, slowly rising to quickly rising contribute to the development of each fourth-order sequence. The combination of moderate clastic supply and steady lacustrine level change is the best opportunity for the porous permeable sandstone reservoir to be deposited. As a result, we conclude that the favorable reservoir sandbodies of sequence Ⅰ and sequence Ⅱ should be in the southeast and the south of the study area respectively.