Xinjiang Petroleum Geology ›› 2005, Vol. 26 ›› Issue (6): 673-674.

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The Modification and Improvement of Webull Production Decline Equation

BAI Qing-huaa, WANG Yi-caia, JU Ya-mingb, GAO Wen-juna, ZHANG Peng-yia, WANG Wen-xiaa, ZHAO Xiao-pinga   

  1. Tuha Oilfield Company, PetroChina:a.Research Institute of Exploration and Development; b.Santanghu Production Plant, Hami, Xinjiang 839009, China
  • Received:2005-03-29 Online:2005-12-01 Published:2020-11-23

Abstract: In order to solve the problem that is no initialization decline rate in Webull production decline equation when b rangesfrom 0 to 1, modification of the equation is raised.The standard equation and calculated methods of undetermined parameters are presented.The modified equation allows wider range and coverage, which can not only be used to describe the production decline when decline rate shows monotone decreasing, and also describe the production decline when decline rate shows monotone increasing or is a constant value.The good effect for application of the modified equation has been obtained in Tuha oilfield.

Key words: decline, modification, characteristic, method

CLC Number: