How to improve the quality of slim hole cementing is a difficult problem of perplexing well drilling.
如何提高小井眼固井质量是困扰钻井行业多年的老问题。
The advantages of the slim hole such as reducing cost of drilling, eliminating the risk of the exploration as well as being beneficial to the environment has caught oil field's attention.
小井眼具有可降低钻井成本，减小勘探风险，有利于环保倍受石油界广泛重视。
A re verse circulation well control method applicable in slim hole was advanced firstly and respective calculation equations were set up.
文中首次提出适应小井眼的反循环并控方法并给出了相应的计算公式。
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