Characteristics of a non-circulating transient flow during gas invasion in the underbalanced drilling process

The wellbore flow in a liquid-based underbalanced drilling process consists of a steady multiphase flow during normal drilling and a transient gas-liquid flow without mud-cycling. The theory of steady multiphase flow has been used to calculate the pressure profile of normal drilling. The...

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Bibliographic Details
Main Authors: Wei Na, Meng Ying-Feng, Liu An-Qi, Li Hai-Tao, Jiang Lin, Zheng Li-Jun, Fu Qiang, Lv Xin
Format: Article
Language:English
Published: VINCA Institute of Nuclear Sciences 2019-01-01
Series:Thermal Science
Subjects:
Online Access:http://www.doiserbia.nb.rs/img/doi/0354-9836/2019/0354-98361904257W.pdf