Oil & Gas Geology ›› 2007, Vol. 28 ›› Issue (4): 528-534.doi: 10.11743/ogg20070415

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Application of boundary element theory to the study of percolation in heterogeneous fractured-vuggy reservoirs

Zhang Liehui1, Li Chengyong2, Liu qiguo1, Li Yun1   

  1. 1. State Key Lab of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500;
    2. Chengdu University of Technology, Chengdu, Sichuan 610500
  • Received:2007-06-08 Online:2007-08-25 Published:2012-01-16

Abstract:

A mathematic model for describing percolation in vertical well in heterogeneous fractured-vuggy reservoirs was built based on fluid flow mechanics in porous medium.By using Lord Kelvin point source solution,Bassel integration and superimpose formula,boundary element fundamental solutions(BEFS) are derived for percolation in vertical wells in heterogeous fractured-vuggy reservoirs and a BEFS model of bottom hole pressure in vertical wells in heterogeneous fractured-vuggy reservoirs is also established.Log-log type curves of dimensionless pressures and pressure derivatives vs.dimensionless time are plotted through theoretical calculation;and the effects of wells located in different areas of high-permeability zones and high-permeability zones located in different parts of the reservoirs upon the bottom hole pressure behaviors are analyzed in detail.

Key words: boundary element, heterogeneity, fractured-vuggy reservoir

CLC Number: