Reservoir Evaluation and Development ›› 2018, Vol. 8 ›› Issue (3): 35-39.

• Reservoir Evaluation • Previous Articles     Next Articles

A new approach to establishing the capillary bundle model

Yuan Yuan1,Meng Yingfeng1,Tang Hanlin2   

  1. 1. State Key Laborotary of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China
    2. Gudong Oil Production Plant, Sinopec Shengli Oilfield Company, Dongying, Shandong 257237, China
  • Received:2017-06-18 Online:2018-06-26 Published:2018-12-07


The capillary bundle model is one of the most common physical models for the porous media. The most classic physical model is the straight capillary bundle model with same diameter. But the bendability of the porous media is neglected in this physical model. Therefore, based on the tight sandstone, combined with the mercury data, and by the introduction of the correction factor-tortuosity, we put forward a new approach to establish the capillary bundle model. This approach considers the bendability of the capillary bundle model and can accurately calculate the radius of capillary, capillary porosity and permeability, capillary volume of different radius and permeability contribution of capillary bundle model with different radius. This new approach has great significance for the study of the reservoir fluid imbibition of specific pressure and quantitatively characterizing the water invasion reservoir damage.

Key words: physical model, capillary bundle model, capillary pressure, tortuosity, porosity, permeability

CLC Number: 

  • TE122.2