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Lubricating and anti-collapse drilling fluid for ultra-deep directional wells in Shunbei Oilfield
QIU Chunyang, WANG Zhi, LI Yancao, LI Mingwei, GONG Wei, BU Fankang
Natural Gas Exploration and Development . 2025, (1): 72 -80 .  DOI: 10.12055/gaskk.issn.1673-3177.2025.01.009