CAJ | 학술논문

大风山风西构造下油砂山组优质储集层为藻灰岩层，包括藻泥晶灰岩、藻叠层灰岩和藻团块灰岩层。藻灰岩储层孔隙度为3.4%~13.1%，平均6.9%，渗透率为0.013~17.5μm2，平均1.353μm2。藻灰岩储集层储集空间主要为溶蚀孔。空隙结构类型主要有粗孔-中喉型、中孔-中喉型和中孔-小喉型。储层物性主要控制因素为风西地区下油砂山组沉积相、沉积微相及成岩作用。
대풍산풍서구조하유사산조우질저집층위조회암층，포괄조니정회암、조첩층회암화조단괴회암층。조회암저층공극도위3.4%~13.1%，평균6.9%，삼투솔위0.013~17.5μm2，평균1.353μm2。조회암저집층저집공간주요위용식공。공극결구류형주요유조공-중후형、중공-중후형화중공-소후형。저층물성주요공제인소위풍서지구하유사산조침적상、침적미상급성암작용。
Based on rock debris,core,thin section and logging,the reservoir of the Neogene Youshashan formation is mainly the algal limestone buried in the Xiayoushashan formation of fengxi structure in DaFeng mountain, including al-gal micrites,stromatolite algal limestone,alga-gobbet limestone.The porosity of algal limestone is 3.4%~13.1% and the average is 6.9%.The permeability is 0.013μm2~17.5μm,and the average is 1.353 μm2.The pore of algal limestone is mainly dissolved pore.Pore structure type is mainly gross pore-middle throat and medium pore-medium throat and medi-um pore-fine throat.The controlling factors of reservoir properties are depositional facies and diagenesis.