Single long sand pack experiment indicated injecting foamer and nitrogen alternately could form fine and smooth foam at front end face of core.

单长填砂管实验结果表明液气交替注入完全可以在岩心前端面形成质量较好的细腻泡沫。

youdao

Using the sand pack model, the percolation features of low permeability cores with various clay minerals and different proportions of clays are studied under different fluid injection patterns.

通过室内填砂管渗流实验，研究了不同粘土类型、不同粘土比例的低渗透岩心在不同流体注入方式下的渗流特性，并根据实验结果分析了其渗流机理。

youdao

Fearing that their vacations could comprise of surf, sand and swine flu, potential travelers are turning to health organizations for guidance on whether to pack their bags or stay home.

由于担心他们的假期包括冲浪，沙滩和猪流感，潜在的旅行者们向卫生组织咨询是打包行李出门旅行还是待在家中。

youdao