Journal of Petrochemical Universities
Effect of the Compositions of the OilBased  Drilling Fluid on the Sag Stability
Liu Kouqi， Qiu Zhengsong， Cao Jie， Luo Yang
Journal of Petrochemical Universities . 2014, (5): 54 -57 .  DOI: 10.3969/j.issn.1006-396X.2014.05.012

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