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Ten Years of Geomechanical Modelling Using Abaqus PDF

37 Pages·2013·15.82 MB·English
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Preview Ten Years of Geomechanical Modelling Using Abaqus

TTeenn YYeeaarrss ooff GGeeoommeecchhaanniiccaall MMooddeelllliinngg UUssiinngg AAbbaaqquuss CCuurrrreenntt FFrraammeewwoorrkk aanndd NNeeww PPeerrssppeeccttiivveess Stefano Mantica E&P RUM, Milan 07/11/2013 www.eni.it Outline (cid:131) Motivation: need for geomechanics, 1999 (cid:131) The choice: Abaqqus test,, 2000 (cid:131) EEnnii’ss wwoorrkkffllooww ffoorr ffiieelldd ssccaallee ggeeoommeecchhaanniiccaall ssttuuddiieess (cid:131)(cid:131) AAbbaaqquuss UUsseerrss CCoonnffeerreennccee 22000066, BBoossttoonn MMAA (cid:131) EEnii-SSiimulliia CCooperattiion: JJoiintt RR&&DD PProjjectt, 22000088-22001100 (cid:131) Parameter identification: automatic multiscale optimization (cid:131) Focus on the well scale: wellbore and completion stability (cid:131) Future Perspectives in 2013: change the point of view 2 Need for Integrated Geomechanics – 1999 Production//Injjection t t 0 1 Stress state variation DDefformattiion Fluid pressure p 0 variiattiion RReesseerrvvooiirr 33DD ““SSttaattiicc”” mmooddeell RReesseerrvvooiirr 33DD “DDyynnaammiicc” mmooddeell GGeeoommeecchhaanniiccaall 33DD mmooddeell IInntteeggrraatteedd ssiimmuullaattiioonn aapppprrooaacchh 3 Test of the Abaqus Software – 2000 FF.EE.MM. MModdell AAbbaqus 2000 WWoorrkk sscchheedduullee ((RR&&DD pprroojjeecctt)) FFeeaattuurreess AAccccuurraattee • Phase 1 – Geertsma synthetic case FFaasstt • Phase 2 – Geertsma geometry, c = c (z) m m Milestone EEllastto-pllasttiiciitty • Phase 3 – From ECL to FEM model UUser ffriienddlly • PPhhase 44 – RReall reservoiir, straiin nuclleii versus FFEEMM •• PPhhaassee 55 – RReeaall rreesseerrvooiirr, eextteennssiioonn cc ==cc ((z)) Strong support m m •• PPhhaassee 66 – RReeaall rreesseerrvvooiirr, eellaassttoo-ppllaassttiicc bbeehhaavviioouurr Fully integrated Eni Agip Division - DSC 4 Test of Abaqus Phase 1: Geertsma Synthetic Case • Cylindrical reservoir • Homogeneous elastic semi-infinite space rr C … R z DDiissppllaacceemmeenntt Features Accurate FFaasstt Stress Elasto-plasticity User friendly SSttrroonngg ssuuppppoorrtt Fully integrated 5 Outline (cid:131) Motivation: need for geomechanics, 1999 (cid:131) The choice: Abaqqus test,, 2000 (cid:131) EEnnii’ss wwoorrkkffllooww ffoorr ffiieelldd ssccaallee ggeeoommeecchhaanniiccaall ssttuuddiieess (cid:131)(cid:131) AAbbaaqquuss UUsseerrss CCoonnffeerreennccee 22000066 (cid:131) EEnii-SSiimulliia CCooperattiion: JJoiintt RR&&DD PProjjectt, 22000088-22001100 (cid:131) Parameter identification: automatic multiscale optimization (cid:131) Focus on the well scale: wellbore and completion stability (cid:131) Future Perspectives: change the point of view 6 Eni’s Workflow for Subsidence Simulation (cid:131) FEM construction (cid:131) griiddddiing (cid:131) region definition (porous/non-porous; water/oil/gas bearing) (cid:131) Property assignation (cid:131) bulk/dry density (cid:131) fluid ppropperties: sppecific weigght (cid:131) rock properties: constitutive law / geomechanical properties (cid:131) Boundary condition & Initialization (cid:131) ddisspplaacceemeentt aatt tthee bboouunddaarieess (cid:131) initial stress/pore pressure (cid:131)(cid:131) iinniittiiaall vvooiidd rraattiioo (cid:131) EEllaassttoo-ppllaassttiicc ssiimmuullaattiioonnss (cid:131) load history: pressure evolution assignment 0.0 -0.5 (cid:131)(cid:131) sseennssiittiivviittiieess aanndd mmaattcchh ooff mmeeaassuurreedd ddaattaa m)m e (c-1.0 c n e d si-1.5 b (cid:131) RReessuullttss su -2.0 (cid:131) Maps -2.5 (cid:131)(cid:131) MMaaxxiimmuumm vvaalluuee eevvoolluuttiioonn Dec-01 Dec-03 Dec-05 Dec-07 Dec-09 Dec-11 Dec-13 Dec-15 Dec-17 Dec-19 Dec-21 Dec-23 Dec-25 Dec-27 Dec-29 The Implementation: Eclipse-Abaqus Interface, Grid (1/3) Interface Eclliipse Moddell Abbaqus Moddell FF..DD.. GGRRIIDD FF..EE..MM.. GGRRIIDD x F.D. pressure Cell Node coords Node # Coords o F.E.M. pressure ((1,,1)) ((x ,,yy ))…((x ,,yy )) 1 ((x,,yy)) 11 11 44 44 … … (2,1) (x ,y )…(x ,y ) j=1 j=2 j=3 1 1 4 4 12 (x,y) … … o o o o ((22,33)) ((xx ,yy ))…((xx ,yy )) 11 11 44 44 x x x i=1 Element # Node # o o o o 1 1 2 6 5 xx xx xx i=2 … … o o o o 6 7 8 12 11 8 The Implementation: Eclipse-Abaqus Interface, Grid (2/3) Interface Eclliipse Moddell Abbaqus Moddell FF.DD. ggrriidd:: ppiinncchh oouutt F.D. grid: fault F.E. grid: pinch out FF..EE.. ggrriidd:: ffaauulltt 9 The Implementation: Eclipse-Abaqus Interface, Grid (3/3) Interface Eclliipse Moddell Abbaqus Moddell First Abaqus mesh RReeffiinneedd, YY22KK of a reservoir, 2000 10

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Abaqus Users Conference 2006, Boston MA Test of Abaqus Phase 1: Geertsma Synthetic Case . Chris Wohlever, Eric Lapczyk, Jie Wan, Xiaoliang Qin.
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