n. underbalance
misc. lack of balance
...气藏 气体 欠平衡 保护 储集层 长庆气田 [gap=972]Keywords : Drilling, Low permeability pool, Gas, Underbalance, Sidewall stabilization, Protection, Reservoir ..
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欠平衡钻井 underbanlanced drilling ; UBD ; Borehole deviation
欠平衡射孔 underbalanced perforating
气相欠平衡钻井 gaseous phase underbalanced drilling
欠平衡钻井技术 Underbalanced Drilling
液相欠平衡钻井 fluid phase underbalanced drilling
欠平衡钻井技术规范 Specification for underbalanced drilling technology
欠平衡技术 unbalance technique
充气欠平衡钻井 aerated underbalance drilling
Air and Gas drilling is one of the most important parts of under-balanced drilling techniques, which now is being used all over the world because of its benefits.
空气钻井是欠平衡钻井的重要分支。
参考来源 - 空气螺杆钻具螺杆衬套副设计研究In this article,low density drilling fluid is classified. At present,study and application low density underbalance drillig fluid focus on four aspect:①gas drilling fluid;②aeration drilling fluid;③emulsi on drilling fluid;④foam drilling fluid.
在对低密度欠平衡钻井液进行了分类的基础上 ,认为我国目前低密度欠平衡钻井液的研究与应用基本上集中在气体钻井液、充气钻井液、乳化钻井液、泡沫钻井液 4大类钻井液上。
参考来源 - 中国低密度欠平衡钻井液研究应用现状·2,447,543篇论文数据，部分数据来源于NoteExpress
但是，欠平衡钻井技术并非适用于所有的油气藏。
But, underbalanced drilling technology is not suitable for every reservoir.
在低压储层进行欠平衡钻井时常选用气体型低密度流体。
Gas drilling fluid is often used in UBD in low pressure formation.
以优化欠平衡钻井作业为依据，提出了油气藏的筛选步骤。
Finally, it provides the screening process of reservoirs based on the optimizing underbalanced drilling technology.
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