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  • JTM VOLUME XVIII NO4./2011
  • English | Indonesia | back
  • ANALISIS PENGARUH ALIRAN NON-DARCY DI SUMUR TERHADAP AOF, LAJU ALIR OPTIMUM GAS DAN WAKTU PLATEAU PADA LAPANGAN X
  • by Dirga Rikandhi, Tutuka Ariadji
  • Program Studi Teknik Perminyakan – Institut Teknologi Bandung, Jl. Ganesa No. 10 Bandung 401032, telp.: +62 22-2504955, fax.: +62 22-2504955, email : dirga_fttm154@students.itb.ac.id
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  • Abstract

  • A condition in retrograde gas reservoir is presence of Non-Darcy flow in porous media. The presence of this flow could make effect for  AOF, skin, optimum gas rate and plateau time. In this paper, by using compositional model, had been determined Darcy coefficient, Non-Darcy coefficient and turbulence coefficient, and the effect of presence of Non-Darcy flow for AOF, skin, Qoptimum and plateau time. By using well testing interpretation, modelling and mathing proccess which involve PVT modelling, IPR-TPR modelling and reservoir modelling, had been gotten a match system reservoir model with field data. Presence of Non-Darcy flow made AOF less become 1/3 than AOF in reservoir without Non-Darcy flow, then presence of Non-Darcy flow made Qoptimum decreased about 1.12 MMSCF/d or 5.56%. In other side, presence of Non-Darcy flow in this X field had contribution to increase skin factor about 7.42 or 26.5% with total skin about 26.02. Sensitivity test for turbulence coefficient in specific rate was done, and made relationship for plateau time.

     

    Keywords : Retrogade gas, Non-Darcy, turbulence, AOF, plateau time

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