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。
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。
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。
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