降低比重。
The raising in mud density can reduce the area of cuttings bed .
泥浆密度增加可使环空岩屑床面积大大降低。
When logging or general overhaul for long time, mud density must BE raised to E. C. D. for stable of hole.
在电测或长时间停钻检修设备时，将泥浆密度提高到循环时的当量泥浆密度范围。
In view of the engineering application, the actual connotative meaning of the dual-gradient drilling technique is that the adjustable limit of the mud density is enlarged obviously.
就工程应用意义而言，双梯度钻井技术原理的实质含义主要是泥浆密度的可调范围变大。
By solving the mechanical model, the casing bearing forces can be obtained under the conditions of different hole types, mud density, casing suspension length and casing running ways.
通过对模型的求解，可以得到不同井眼类型、泥浆密度、悬浮长度以及不同下套管方案下的套管受力，为大位移井下套管作业提供了力学参考。
The technology was helped by the density of houses and other buildings, made of mud brick so that they showed up somewhat clearly.
这种技术利用了显现房屋和其他由泥砖建成的建筑的密度特性，因此可以显现很清晰的事物。
The technology was helped by the density of houses and other buildings, made of mud brick so that they showed up somewhat clearly against the looser soil cover.
这种技术利用了显现房屋和其他由泥砖建成的建筑的密度特性，因此可以清晰的显现被松散的泥土覆盖的物体。
Accurate density of gas-cut mud can be measured using a pressurized mud balance.
气侵泥浆的精确密度可以用加压泥浆比重秤测量。
The mud program gives details on mud type, composition, density, rheology, filtration and other property requirements and general and specific maintenance needs.
泥浆设计详细给出了泥浆类型、组份、密度、流变性、滤失及其它性能要求，以及泥浆一般的和具体的维护要求。
The aerated foam mud fluids can used in negative drilling, and enlarge the life of drilling bits for its low density, and low sap pressure.
充气泡沫泥浆由于比重低，液柱压力低，实现了负压钻进，能大幅度提高机械钻进，延长钻头寿命。
The deep formation has a high degree of hardness and abrasivity; the bit type selection is difficult and the ROP is low especially under the high density mud.
深部井段地层的硬度高、研磨性强，钻头选型困难，特别是在高密度条件下机械钻速低。
The deep formation has a high degree of hardness and abrasivity; the bit type selection is difficult and the ROP is low especially under the high density mud.
深部井段地层的硬度高、研磨性强，钻头选型困难，特别是在高密度条件下机械钻速低。
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