Liu9 well drilled and explored before 30 years is one engineering abandoned well with open hole which is situated at high part of fault nose structure trap in Liuzhuang oil and gas field.
刘9井位于刘庄油气田断鼻构造圈闭高部位，是三十年前钻探的一口裸眼工程报废井。
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。
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。
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