Underbalanced drilling technology can increase ROP and decrease formation damage, so it is increasingly used worldwide.
欠平衡钻井技术可以降低地层损害、提高机械钻速，所以在世界范围内被逐渐采用。
But, underbalanced drilling technology is not suitable for every reservoir.
但是，欠平衡钻井技术并非适用于所有的油气藏。
To economically and efficiently develop the gas field, Wells were drilled using underbalanced drilling and slim-hole drilling technology.
根据高效低成本开发苏里格气田的要求，进行了欠平衡及小井眼钻井，为低成本开发苏里格气田做前期技术准备。
Finally, it provides the screening process of reservoirs based on the optimizing underbalanced drilling technology.
以优化欠平衡钻井作业为依据，提出了油气藏的筛选步骤。
For understanding the geologic feature of the reservoir, underbalanced pressure drilling technology is tested in Zhongyuan Oilfield.
为了正确认识油气藏的地质条件，中原油田对负压钻井技术进行了现场试验。
For understanding the geologic feature of the reservoir, underbalanced pressure drilling technology is tested in Zhongyuan Oilfield.
为了正确认识油气藏的地质条件，中原油田对负压钻井技术进行了现场试验。
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