CAJ | 학술논문

鄂尔多斯盆地北部杭锦旗断阶、塔巴庙地区下石盒子组-山西组的成岩作用主要包括压实作用、胶结作用和溶蚀作用。随着埋藏深度的增加，砂岩孔隙逐渐减少，胶结作用成为孔隙度降低的主要因素，但早期形成的胶结物同时又增加了岩石抵抗压实作用的能力而有利于粒间孔隙的保存。不同产状的高岭石对储层孔隙的贡献不同，生长于长石溶孔中的自生高岭石，自形晶极好且堆积松散，保留了良好的晶间隙，对孔隙贡献较大;而长石蚀变而成的高岭石，堆积紧密，晶间隙极小，对孔隙贡献较小。
악이다사분지북부항금기단계、탑파묘지구하석합자조-산서조적성암작용주요포괄압실작용、효결작용화용식작용。수착매장심도적증가，사암공극축점감소，효결작용성위공극도강저적주요인소，단조기형성적효결물동시우증가료암석저항압실작용적능력이유리우립간공극적보존。불동산상적고령석대저층공극적공헌불동，생장우장석용공중적자생고령석，자형정겁호차퇴적송산，보류료량호적정간극，대공극공헌교대;이장석식변이성적고령석，퇴적긴밀，정간극겁소，대공극공헌교소。
Diagenesis influences the reservoir quality. The diagenetic pathways in sandstones are complex, being governed by numerous interrelated parameters, such as, mineral composition, deposition-faces, as well as the composition and flow patterns of basinal fluids. The diagenetic processes that govern reservoir properties include the extent of compaction, cementation (mainly by carbonates, quartz, and clay-minerals), and dissolution of framework-grains. With increasing burial depth, sandstones progressively lose porosity. In deep sandstones, porosity is decreased mainly due to carbonate and quartz cementation, but, at the same time, cements also protect grains from further compaction. The aim of this study is to unravel the influence of diagenesis on the reservoir quality by analyzing the relationship between porosity, permeability and the content of corbonate cement, quartz cement and authigenetic clay minerals, respectively.