CAJ | 학술논문

储层的微观孔隙结构不仅决定着油气的运移、聚集，而且影响着油水分布、油气采收率。通过物性分析、扫描电镜、铸体薄片、高压压汞等技术对长8储层微观孔隙结构特征进行分析研究，结果表明孔隙类型主要有剩余粒间孔、粒间溶孔、粒内溶孔、晶间孔，其中以前2种为主要有效孔隙。孔喉组合以小孔微喉为主，小孔微细喉型次之。根据毛细管压力曲线形态特征，结合排驱压力、孔喉分选性、进汞饱和度、中值压力等参数，将研究区储层分为三类。
저층적미관공극결구불부결정착유기적운이、취집，이차영향착유수분포、유기채수솔。통과물성분석、소묘전경、주체박편、고압압홍등기술대장8저층미관공극결구특정진행분석연구，결과표명공극류형주요유잉여립간공、립간용공、립내용공、정간공，기중이전2충위주요유효공극。공후조합이소공미후위주，소공미세후형차지。근거모세관압력곡선형태특정，결합배구압력、공후분선성、진홍포화도、중치압력등삼수，장연구구저층분위삼류。
Microscopic pore structure not only determines the oil and gas migration and accumulation,but also affects the water distribution,oil and gas recovery. By analysis of the physical property,SEM,and casting slice,high pressure Hg injec-tion and other techniques,the micro-pore structure of Chang 8 reservoirs in the Dadonggou blocK of Zhiluo oilfield is analyzed and studied. The results show that the main pore types consist of the remaining inter-granular pore,inter-granular solution pores,inter-granular solution pore ,inter-crystal pore,where the former two as the main active pores. The main pore-throat type is low pore-micro throat,low pore - minuteness throat followed. According to capillary pressure curve morphological characteristics,combined with displacement pressure,pore throat sorting ,Hg into saturation,median pressure and other param-eters,the reservoir of the studied area is divided into three types.