The Trilinear Seepage Model for Fractured Horizontal Well in Shale#br#
Gas Reservoir

doi:10.11885/j.issn.1674-5086.2013.10.16.04

Abstract

Abstract:

Shale gas reservoirs with plenty of natural fractures and nano-scale poreshave a variety of seepage patterns，fractured
horizontal well has become the key production method，in which establishment and solution of percolation mathematical model
is of a strong theoretical and practical value. Drawing lessons from the existing three linear seepage model，we re-designed
the composition of the model，and established seepage mathematical model including adsorption and desorption. The capacity
formula of single well production of fracturing shale gas reservoir horizontal well and the bottom hole pressure formula are
deduced with the help of dimensionless and Laplace transform. Then we applied the results to the analysis of the influence
factors in the process of single well production. The results show thatthe formulae obtained by the simplified model can calculate
and predict the changes of shale gas production with convenience and accuracy，and also provide the optimization of design
parameters for fracturing design.

Key words: shale gas, seepage, horizontal well, fracturing, deliverability equation, fracture

CLC Number:

TE371

GUO Xiaozhe1*, ZHOU Changsha2. The Trilinear Seepage Model for Fractured Horizontal Well in Shale#br# Gas Reservoir[J]. 西南石油大学学报(自然科学版), DOI: 10.11885/j.issn.1674-5086.2013.10.16.04.

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The Trilinear Seepage Model for Fractured Horizontal Well in Shale#br# Gas Reservoir

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