CAJ | 학술논문

孔隙衬里绿泥石发育的砂岩大多属于优质储层，前人将其归功于绿泥石对孔隙的保护作用。按照孔隙衬里绿泥石形成的铁质来源，可划分为同沉积黏土膜转化型、富铁镁物质溶蚀再结晶型和转化与直接结晶混合型3种类型。通过国内外富孔隙衬里绿泥石砂岩实例的对比研究表明，孔隙衬里绿泥石可以通过抑制自生石英生长、提高抗压实能力、指示早期碱性溶蚀发育程度和堵塞孔喉等4种方式影响储层性能，且不同成因的孔隙衬里绿泥石对储层性能影响方式不同，同一成因绿泥石在不同成岩阶段的影响方式也不同。中成岩 A期以前，转化型孔隙衬里绿泥石通过占据孔喉和提高抗压能力影响储层，而溶蚀结晶型孔隙衬里绿泥石主要指示火山物质发生碱性溶蚀的程度；只有砂岩成岩阶段达到中成岩 B期以后，孔隙衬里绿泥石对石英生长的抑制作用才得到充分体现。
공극츤리록니석발육적사암대다속우우질저층，전인장기귀공우록니석대공극적보호작용。안조공극츤리록니석형성적철질래원，가화분위동침적점토막전화형、부철미물질용식재결정형화전화여직접결정혼합형3충류형。통과국내외부공극츤리록니석사암실례적대비연구표명，공극츤리록니석가이통과억제자생석영생장、제고항압실능력、지시조기감성용식발육정도화도새공후등4충방식영향저층성능，차불동성인적공극츤리록니석대저층성능영향방식불동，동일성인록니석재불동성암계단적영향방식야불동。중성암 A기이전，전화형공극츤리록니석통과점거공후화제고항압능력영향저층，이용식결정형공극츤리록니석주요지시화산물질발생감성용식적정도；지유사암성암계단체도중성암 B기이후，공극츤리록니석대석영생장적억제작용재득도충분체현。
The sandstone reservoirs containing pore-lining chlorite are commonly high-quality reservoir which is believed to be due to the pore-lining chlorite by weakening authigenic quartz cement growth on detrital grains.Based on the source of iron,the formation mechanism of pore-lining chlorite consists of transformation of precursor clay minerals, direct precipitation from iron-rich substance dissolution,and mixture of precursor clay and direct precipitation.Comparative study of domestic and foreign sandstone reservoirs with abundant pore-lining chlorite shows that the pore-lining chlorite can influence reservoir quality by retarding authigenic quartz cement growth,enhancing sandstone resistance ability to compaction,indicating the degree of early alkaline dissolution and blocking pore throat.The influence way and degree on reservoir are determined by chlorite genesis and diagenetic stage.Before period A of middle diagenetic stage,the transformed chlorite affects sandstone reservoir quality by suppressing quartz overgrowth and raising sandstone resistance ability to compaction,and the direct precipitation chlorite affects by indicating the degree of early alkaline dissolution.After accessing to period B of middle diagenetic stage, the pore-lining chlorite show full ability to weaken quartz cementation in sandstone reservoirs.