Reservoir Drive Mechanism [PDF]

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Reservoir Drive Mechanism Kuliah 3 (06.04.2014)



QE



How the fluids flow to wellbore? HC Saturation High porosity



Permeability Energi Reservoir P wellbore Pres > Pwell



Energi Reservoir darimana ? Mekanisme pendorong reservoir !



P reservoir



P reservoir



Prinsip Dasar Kelakuan Fluida



Undersaturated oil



Gas Cap mengembang



Bubble Point muncul gas



p1



>



p2



Liquid mengkerut Karena gas keluar



p3



>



>



p4



Initial gas cap



Gas Cap mengembang



Oil + Gas tercampur



Expanded of oil + dissolved gas



Pawal



>



P



Reduction in PV due to increased grain packing and connate water expansion



Mekanisme Pendorongan Reservoir • • • • •



Depletion Drive Reservoir Water Drive Compaction Drive Gravity Drainage Drive Depletion Type Reservoir – Solution Gas Drive – Gas Cap Drive



• Combination Drive



Gas/Minyak Reservoir



Minyak Reservoir



Natural Depletion Drive Depletion drive berasal dari sifat compresibilitas fluida.



Reservoir minyak  depletion drive jika reservoir terisolasi dan P res > Pb. RF selama depletion drive tergantung besar compresibilitas minyak. (C minyak