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Issue:ISSN 1006-5539
          CN 51-1183/TE

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    Your Position ：Home->Past Journals Catalog->2012 Vol.1

    Analysis on Fractured Well Productivity in Low-Permeability Gas Reservoirs Considering Non-Darcy Effect
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    Key Words：Low-permeability gas reservoir； Start-up pressure gradient； Slippage effect； Stress sensitivity； Vertical fracture well
    Abstract：A number of recent studies suggest that gas seepage characteristics may be affected by such factors as start-up pressure gradient， slippage effect and stress sensitivity. In view of the characteristics of low permeability gas reservoir， based on non-Darcy seepage theory， creating a new pseudo-pressure form， derived is an equation for calculating production capacity of vertical fracture well with infinite conductivity in low permeability gas reservoir with combined influence of start-up pressure gradient， slippage effect and stress sensitivity on low-permeability gas reservoir taken into account. Research results show that start-up pressure gradient effect has less influence on production capacity of vertical fracture well with infinite conductivity in low permeability gas reservoir， slippage effect and stress sensitivity has no obvious influence on its production capacity during high flow pressure stage， and during low flow pressure stage， fracture well will have more and more production capacity when slippage factor increases and fracture well will have less and less production capacity when stress sensitivity factor increases.
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