Drilling difficulties in ultra-deep wells and countermeasures: An example from Kun 1-1 well, Kunteyi structure, Qaidam Basin
HAO Shaojun, AN Xiaoxu, SHI Xiaowen, JIANG Lin
Natural Gas Technology and Economy . 2021, (3): 42 -48 .  DOI: 10.3969/j.issn.2095-1132.2021.03.007

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