砂岩地层 meaning in English

sandstone formation

Analysis of three - dimensional simulation of casing stress in loose sandstone reservoir
疏松砂岩地层套管应力变化三维仿真分析
Testing on logs in laminated shaly sands it demonstrates that the model can be applied in laminated shaly sands . testing on effects of rdc . and vdc representing clay resistivity and fraction or dry clay resistivity and fraction on water saturation calculated by the model it proves that it is very reasonable for rdc to be clay resistivity and vdc to be dry clay fraction , so the mode l derived from the paper can be used to evaluate shaly sands
通过一组层状泥质砂岩测井资料解释，表明该模型适用于层状泥质砂岩地层解释；通过考察rdc 、 vdc代表粘土或干粘土电阻率及含量对该模型计算含水饱和度的影响，说明rdc代表粘土电阻率，而vdc代表干粘土含量是合适的，因此，使用文中给出的电阻率模型能更好地解决泥质砂岩问题。