ANALYTICAL MODEL FOR COMPOSITE RESERVOIRS PRODUCED AT EITHER CONSTANT BOTTOMHOLE PRESSURE OR CONSTANT RATE. Conference Paper uri icon

abstract

  • In this paper, the authors present a model of the complete characteristic transient response from a composite reservoir including the effects of skin, wellbore storage and phase redistribution at the well. Six flow regimes and the combined effects of wellbore storage and phase redistribution on pressure behavior in composite reservoirs are presented. Using an automatic history matching approach, the authors have analyzed three buildup tests and a pressure falloff test. This method eliminated the serious uniqueness problem associated with type curve analysis. They demonstrate that incorrect reservoir parameter estimates and incorrect production performance predictions would result from the use of any model that lacks the capabilities of the model presented in this paper. They also demonstrate possible misinterpretations of pressure data that may result from not recognizing the presence of phase redistribution in the buildup test data or not recognizing the composite reservoir behavior.

author list (cited authors)

  • Olarewaju, J. S., & Lee, W. J.

complete list of authors

  • Olarewaju, JS||Lee, WJ

publication date

  • December 1987