Xinjiang Petroleum Geology ›› 2008, Vol. 29 ›› Issue (5): 644-647.

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A Model for Prediction of Constant Volume Sealed Reservoir Performance and Recoverable Reserves

TONG Kai-jun1,2, SHAN Yu-ming1, YANG Lu1, LI Li-juan3   

  1. 1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu, Sichuan 610059, China;
    2. Langfang Branch, Research Institute of Petroleum Exploration and Development, PetroChina, Langfang, Hebei 065007, China;
    3. West Sichuan Gas Production and Transmission Department, Southwest Branch, Sinopec, Deyang, Sichuan 618000, China
  • Received:2008-02-27 Published:2020-10-19

Abstract: It is an important task for forecasting the economically recoverable reserves in oilfield development evaluation when oilfield goes into the middle and late development stage. This paper analyzes and explains the correlative curve distribution characteristic between accumulative oil production and reservoir pressure in sealed reservoirs and its statistical regularity. Based on the study of growth curvature in life system, it introduces a general Usher model and affords a new model suiting for depletion drive stage in sealed reservoirs to predict relevant dynamic targets. By using nonlinear least-squares method to solve the new model, all the fitting parameters and the recoverable reserves can be acquired. The case study shows that this model is effective for use, simple for calculation and precise for prediction.

Key words: oilfield development, recoverable reserves, sealed reservoir, Usher model, depletion drive

CLC Number: