reverse coning methods
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Reverse Coning Methods
Kelompok 17Bernando Purba (12209009)Ade Anggi NS. (12209027)Anang Nugrahanto (12209089)
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Latar BelakangO Efek water coning pada reservoir bottom water:
O Mengurangi recovery factorO Menurunkan effisiensi mekanisme pengurasanO Meningkatkan biaya operasi
O Critical rate pada sumur konvensional kurang ekonomis untuk diaplikasikan.
O Reverse Coning adalah suatu metode mengatasi permasalahan water coning.
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Single Completion Reverse Coning
Reverse Coning Application : Husky Oil Operation Ltd.
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Prinsip Reverse ConingO Mencegah terjadinya efek water coning.O Mengatasi permasalahan thin oil column pada
reservoir gas-oil-water.O Perforasi ditempatkan pada zona airO Rate produksi besar, agar terjadi kerucut minyak pada
zona perforasi.
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Keuntungan Reverse Coning
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Dual Completion (DWL dan DWS)
DWS App : Nebo Hemphill Field, Lousiana,Parish (Hunt Petroleum)
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Prinsip Dual CompletionO Konsep utama sumur DWL dan DWS adalah
menciptakan pressure drawdown tandingan pada zona air.
O Kondisi ideal yang diharapkan yaitu mengurangi efek water coning dengan tercapainya oil-water contact yang relatif stabil.
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Keuntungan Produksi Dual Completion
O Laju produksi minyak yang relatif besar O Produksi oil free-water pada top completionO Produksi water free-oil pada bottom completion untuk
DWS completionO Looping water free-oil pada bottom completion untuk
DWL completionO Biaya water treatment di permukaan dapat dikurangiO Teknologi DWS sudah terbukti menguntungkan pada
sumur
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Inflow Performance Window (IPW)
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Desain Operasi Sumur DWS (1)O Model Analitik (Utama,Marhaendrajana-2008)
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Desain Operasi Sumur DWS (2)O Model Numerik (Astutik,Marhaendrajana-2007)
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Desain Operasi Sumur DWLO Model Analitik (Jin,Wojtanowicz-2009)
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Nebo-Hemphill Test of DWS
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Daftar PustakaO Cheung et al,An Investigation Of Reverse Coning Methods In
Rainbow Vertical Miscible Floods,Petstoc 92-08,1992.O Astutik, W. Studi Tentang teknologi Downhole Water
Sink(DWS),Tugas Akhir TM-ITB, 2007.O Utama, F.A. An Analytical Model to Predict Segregated Flow
in the Downhole Water Sink Completion and Anisotropic Reservoir. SPE 120196, Proceedings of the SPE ATCE, Denver, CO, Sept. 21–24, 2008.
O Jin L.Downhole Water Loop(DWL) Well Completion for Water Coning Control ,” PhD Dissertation,Louisiana State University and A&M College,Baton Rouge, LA, 2009.