西南石油大学学报(自然科学版) ›› 2012, Vol. 34 ›› Issue (6): 113-117.

• 石油与天然气工程 • Previous Articles     Next Articles

A New Deconvolution Algorithm Based on Pressure Derivative

Hu Xixaohu1，2, Zheng Shiyi2，3, Long Shengxiang1   

  1. 1. Exploration & Production Research Institute，SINOPEC，Haidian，Beijing 100083，China2. Heriot-Watt Institute of Petroleum Engineering，Edinburgh EH144AS，England3. College of Petroleum Engineering，China University of Petroleum（Beijing），Changping，Beijing 102249，China
  • Received:1900-01-01 Revised:1900-01-01 Online:2012-12-01 Published:2012-12-01

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Abstract: The pressure deconvolution result is very sensitive to the initial reservoir pressure，and the error in this parameter
must be controlled within 0.5%. It requires at least two different flow periods to determine this parameter by Levitan’s method，
and it is very susceptible to such factors as nonlinearity in pressure and rate data. A new deconvolution algorithm based on
pressure derivative is presented，and it’s in sensitive to the initial reservoir pressure. Moreover，only one flow period can be
used to determine its value. Through detailed analysis in this paper，this algorithm can tolerate both errors in pressure and rate.

Key words: pressure derivative, deconvolution, initial reservoir pressure, rate error, non-sensitivity