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。
Dual Gradient drilling (DGD) is also known as Dual Density drilling, which is a new type of drilling technology for deepwater drilling.
双梯度钻井又称为双密度钻井，是一种适用于深水钻井的新型钻井技术。
Several new approaches to the deepwater dual gradient drilling were developed, including subsea mudlift drilling, riserless drilling, and dual density drilling.
双梯度钻井又称为双密度钻井，是一种适用于深水钻井的新型钻井技术。
Several new approaches to the deepwater dual gradient drilling were developed, including subsea mudlift drilling, riserless drilling, and dual density drilling.
双梯度钻井又称为双密度钻井，是一种适用于深水钻井的新型钻井技术。
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