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18 Predicting the Onset of Liquid Loading and Dynamic Behaviour of LL Gas Wells

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onset liquid loading
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  Predicting onset of liquid loading 2nd European Conference on Gas Well 2nd European Conference on Gas Well 2nd European Conference on Gas Well 2nd European Conference on Gas Well DeliquificationDeliquificationDeliquificationDeliquification Predicting onset of liquid loading and dynamic behaviour of liquid loaded gas wells G. G. G. G. AlbertsAlbertsAlbertsAlbertsTNO Science and IndustryTNO Science and IndustryTNO Science and IndustryTNO Science and IndustryS. S. S. S. BelfroidBelfroidBelfroidBelfroidTNO Science and IndustryTNO Science and IndustryTNO Science and IndustryTNO Science and IndustryE. E. E. E. BiezenBiezenBiezenBiezenNAMNAMNAMNAMW. W. W. W. SchiferliSchiferliSchiferliSchiferliTNO Science and IndustryTNO Science and IndustryTNO Science and IndustryTNO Science and IndustryK. K. K. K. VeekenVeekenVeekenVeekenNAMNAMNAMNAM  TNO Science and Industry, 25 September 2007Predicting onset of liquid loading 2 Introduction ãGoal : prediction of behaviour of wet gas wellãPrediction of the liquid loading pointãSimulation of a loading wellãStart-up/shut-in scenario’sãInvestigation best loading mitigation strategiesãControl of loading wells (f.i. Gas injection)ãModelsãSteady models (f.i. Turner)ãDynamic models (f.i. OLGA, TNO dedicated models)ãNatural gas wells, laboratory data (TU Delft Air/Water)  TNO Science and Industry, 25 September 2007Predicting onset of liquid loading 3 Simulation Well (loading) Well 2 0100002000030000400005000060000700000 100000 200000 300000 400000 500000 600000 700000 800000 900000 1000000t [s]    Q  p  r  o   d  u  c   t   i  o  n   [  m   3   /   d   ] 051015202530    W  e   l   l   h  e  a   d  p  r  e  s  s  u  r  e   [   b  a  r  a   ] OlgaProduction dataWellhead pressure Wellhead pressure Production field dataSimulation (OLGA)Shutin and foam job  TNO Science and Industry, 25 September 2007Predicting onset of liquid loading 4 Natural gas well 2 020406080100120140050000100000150000200000250000300000350000400000450000500000 Gas mass flow [Sm3/day]    P   (   t  o  e   )   [   b  a  r   ] OlgaPres=85 bara7565554535 Reservoir decline simulation Decrease in reservoir pressure
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