Sandstone and limestone are the main targets cut by oil and gas well drilling and for their physical mechanical property there have been systematic determination method and quantitative gradation.
砂岩和石灰岩是石油天然气钻井破岩的主要对象,它的物理力学性质已有系统的测定方法和定量分级。
Vitrified microsphere; expanded perlite; insulating mortar; aggregate gradation; mechanical property; insulation property; workability;
玻化微珠; 膨胀珍珠岩; 保温砂浆; 骨料级配; 力学性能; 保温性能; 工作性;
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