1) sandstone formation
砂岩地层
1.
Acidizing is an effective method of rebuilding formation in sandstone formation, but it can also bring formation damage taken by forming oil-wetting formation, clay dispersing and flocculating, interfacial film and stringy milk.
砂岩地层酸化是改造地层的一种有效手段,但对砂岩地层酸化的同时,又可能形成油湿地层、粘土分散和絮结、界面薄膜和粘稠乳液对地层造成伤害。
2.
Tested samples were taken from different sandstone formations of Changqing, Erlian, Jilin Oilfield, Sichuan and Tarim Basin and Venezuela and hydraulic fracturing treatments would be performed in these formations.
采用长庆油田、二连油田、吉林油田和四川盆地、塔里木盆地以及委内瑞拉将要进行水力压裂施工的砂岩地层的岩样,用该方法测定最小主应力,将测定结果与长源距声波测井和微压裂测定结果对比,误差一般为2～3MPa,证实这是一种经济可靠的方法。
2) shale sand formation
砂泥岩地层
1.
In this paper, a new method called Integrated Evaluation Model is proposed, which uses sonic and other related well log data to evaluate pore pressure, that is, with giving consideration to the effect of clay content, porosity, vertical effective stress of shale sand formation on sonic velocity.
提出利用声波速度等测井资料检测地层孔隙压力的“综合解释方法” ,即同时考虑砂泥岩地层的泥质含量、孔隙度、垂直有效应力对声波速度的影响 ,先由相关测井资料求取泥质含量和孔隙度 ,再由声波速度计算垂直有效应力 ,最后通过有效应力计算地层孔隙压力。
3) mud rock and sand rock strata
泥岩砂岩地层
4) tight sand formation
致密砂岩地层
5) formation and sandstone characteristic
地层及砂岩特征
6) unconsolidated sandstone formation
疏松砂岩地层
1.
Experimental study of micro fine migration in unconsolidated sandstone formation;
疏松砂岩地层微细粒运移特征实验研究
补充资料：粉砂岩
| 粉砂岩 siltstone 由粒径为0.0625～0.0039毫米（mm）的粉砂的含量占50％以粉砂岩标本的一种碎屑沉积岩。除粉砂以外其它由砂、粘土或化学沉淀物组成。按粒度划分为粗粉砂岩（0.0625～0.0312mm）和细粉砂岩（0.0312～0.0039mm）。按碎屑成分划分为石英粉砂岩、长石粉砂岩、岩屑粉砂岩（少见）和它们间的过渡类型。根据胶结物成分划分为粘土质粉砂岩、铁质粉砂岩、钙质粉砂岩和白云质粉砂岩。黄土也是一种疏松的或半固结的粉砂质沉积物。粉砂岩多形成于河漫滩、三角洲、潟湖和海洋的较深水部位。
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参考词条