AN ANALYSIS OF DRILLSTRInNG FRCTIONAL DRAG IN DIREVYIONAL WELL
Zhang Jianqun, Sun Xuezeng, Yan Tie, Pan Weiguo
Editorial office of ACTA PETROLEI SINICA . 1992, (S1): 98 -107 .  DOI: 10.7623/syxb1992S1013

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