Xinjiang Petroleum Geology ›› 1996, Vol. 17 ›› Issue (2): 163-167+204.

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OPTIMIZING EM PIRICAL FORMULA FOR CALCULATING DEVIA-TION FACTOR

Yuan Zixue   

  1. Scientific Research Institute of Petroleum E xploratiom and Development. CNPC. Beijing 100083
  • Received:1995-03-06 Online:1996-06-01 Published:2020-07-27
  • About author:Yuun Zixue . Engineer. Petroleun Geology

Abstract: Comparing the results with 6 common empirical formulae for calculating deviation factor, this paper acquires the method with minimum error. When 1. 05≤Tr≤3.0, 0. 2≤Pr≤20. Dranchuk and Abu-Kassem methods are applicable for all the cases ex-cept that Beggs and Brill methods are applicable only within the subdomain 1. 05~1.1 of Tr and 1.5~4.4 of Pr.

Key words: Deviation, Factor, Experience, Formula Error