In the cements, carbonate and quartz overgrowths are the main cements that reduced the reservoir quality of the sandstones. 其中碳酸盐胶结物和次生石英加大是造成砂岩物性降低的主要胶结物。
Quartz Overgrowths and Their Influence on the Reservoir Quality of Tight Sandstone in the Western Sichuan Basin 川西致密砂岩的石英次生加大及其对储层的影响
Cementation is the other important factor that caused the loss part of the primary porosities. In the cements, carbonate cement and quartz overgrowths are the major factor reduced the reservoir quality. 胶结作用是储层物性变差的另一个重要因素。在胶结物中,碳酸盐和次生石英是使储层物性变差的主要胶结物。
The content of mud matrix is low and the type of cements observed are quartz overgrowths, carbonate and clay minerals which including kaolinite, illite and chlorite. 杂基含量低,胶结物主要为高岭石、伊利石、绿泥石等粘土矿物,以及石英次生加大、碳酸盐矿物。