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71st EAGE Conference and Exhibition incorporating SPE EUROPEC 2009
- Conference date: 08 Jun 2009 - 11 Jun 2009
- Location: Amsterdam, Netherlands
- ISBN: 978-90-73781-67-2
- Published: 08 June 2009
201 - 250 of 585 results
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Whispering Gallery Waves Near Fluid-solid Boundaries
Authors A. P. Krauklis, P. V. Krauklis, N. Y. Kirpichnikova, D. Pissarenko, M. Fukuhara and T. ZharnikovWhispering gallery waves propagated inside fluid along its curved interface with elastic solid are discussed. Asymptotic formula described the wave field is suggested. This formula relates amplitude of WGW to positions of source and receiver with respect
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Simulation of Seismic Waves Propagation in Multiscale Media on the Base of Locally Refined Grids
Authors G. V. Reshetova, V. G. Khaidukov, V. V. Lisitsa, V. A. Tcheverda and P. ThoreNew numerical method for large-scale computer simulation of seismic waves in multiscale heterogeneous media is developed. As multiscale hereafter we mean media with heterogeneities of extremely different sizes. In the paper we deal with a layered medium c
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Multi-dimensional, Multi-variable, and Multi-scale Modeling of Reservoir Heterogeneities
Authors J. W. Huang, G. Bellefleur and B. MilkereitA new approach is developed to model 3D reservoirs that capture different scales of heterogeneities and simultaneously honor statistical features observed in the well logs. Our approach provides a platform to estimate rock physics properties at the well l
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Inversion of Refraction Traveltimes by Homogeneous Function Method Is Analogue of CDP Reflection Method
By V. B. PiipPresented below is a method of the inversion of refraction seismic data. The presentation compares interpretation of refraction data by homogeneous function method with CDP reflection depth section for the same profiles. We show that the method of homogen
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Phase-encoded Modeling
Authors S. Brown and G. SchusterWe propose a phase-encoded modeling (PEM) method to efficiently compute bandlimited Green's functions. These Green's functions, derived from a pair of finite-difference (FD) simulations of phase-encoded monopole and dipole sources, can be used for calcula
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Seismic Modelling and Inversion – What Is the Cause of Observed Amplitude Increase in the Seismic Dataset
Authors N. Ücisik, S. I. Førsund and M. BellerThis seismic modelling study has been performed using well-1, in order to better understand the causes of observed amplitude increase in the seismic data from a sub-marine fan system of Palaeocene age. The 3D seismic dataset has also been inverted for rel
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Random Noise Suppression from Seismic Data Using Time-frequency Peak Filtering
Authors A. Roshandel Kahoo and H. R. SiahkoohiSeismic data usually are affected by various types of noise such as ground rolls, multiples and etc. Random noise resulted from random oscillation during acquiring data, exists in seismic data over entire time and frequency. In this paper we used time-fre
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Seismic Data Denoising and Enhancement Using Intrinsic Time-scale Decomposition
Authors A. Zegadi and K. K. ZegadiIn this paper we present a new denoising and enhancement method in the (t-x) domain, based on intrinsic time-scale decomposition (ITD), to attenuate random and coherent noise. The method is adaptive; the filtered signal in the spatial direction is obtaine
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A Deconvolution Approach Using Statistical Upgoing Waves of Zero Offset VSP
More LessDesigning a deconvolution operator for VSP based on downgoing waves is considered to be one of the most ideal deconvolution methods to get high-resolution images in routine processing of zero offset VSP. However, when the VSP corridor stack image is splic
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Refined P-wave Imaging Using Large Array 3D VSP Data
More LessWith development of downhole receivers, it has been a trend to use large array 3D-VSP, where rich wavefield information can be acquired. However, the processing of large array 3D-VSP is a very interesting issue. This paper introduces a series of refined
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Estimation of the Interval Velocities with VSP Data Using Migration of Multiples
Authors D. A. Nasyrov, D. A. Kiyashchenko, Y. V. Kiselev, B. M. Kashtan and V. N. TroyanVSP data gives an opportunity to obtain high-resolution image of the subsurface around the borehole. However, precise velocity model is required for this. We present a method for velocity analysis with VSP data which is based on separate migration of prim
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Diffractor Location in Cross-well Case by Weighted Kirchhoff Migration
Authors A. Nikitchenko, D. Kiyashchenko, B. Kashtan, Y. Kiselev and V. TroyanBesides conventional reflection imaging, it is useful to locate the scattering objects in the subsurface. They may inform us about the presence of such discontinuities as faults or salt inclusions. In this paper we propose a technique of diffractor locati
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Sigma Processing of VSP Data
Authors T. Gronnwald, L. Sandjivy, J. L. Mari, R. Della Malva and A. ShtukaAfter having previously successfully compared the factorial kriging filter to their most common geophysical counterparts, a full processing of VSP data using probability modelling (geostatistics) has been developed and named sigma processing of VSP data.
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Optimal Events Separation in Time Domain
Authors W. V. Karsten and M. V. DavidenkoLeast squares frequency processing is a very elegant and effective technique for separating events in VSP. But it can't take into account variations in apparent velocity of events with time which is the case for offset VSP. Time domain solution can overco
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Long Spreadlength Walkaway NMO Approximations for Layered VTI Models
By E. BliasThe purpose of this paper is to present new moveout equations and test several NMO approximations used in VTI inversion of walkaway VSP data. A method to derive three-term NMO approximations is described. Modeling test show that different approximations h
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Detection of UXO in an Urban Area – Models and a Case Study
Authors B. F. Paap and R. S. WesterhoffOn and below the water bottom of narrow and shallow Dutch canals, UXO form an obstruction for dredging activities. Locations and depths are often unknown which makes clearing of these areas difficult. The purpose of this research is to determine the possi
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Geophysical Monitoring of Contaminated Shallow Structures, Study Case – Petrobrazi Refinery Area, Ploiesti, Romania
Authors D. Ioane, P. Georgescu and F. ChiteaThe paper discuss geophysical possibilities of monitoring the contamination of shallow structures and aquifers. Following recent researches of the authors dedicated to the geoelectrical detection of underground oil-contamination (Ioane et al., 2008; Chite
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Preparing Model of Aquifer of Aman Abad Area Using Resistivity Data Inversion
Authors M. Mirzaei, M. Yosefirad, A. Moradzadeh and A. BaghriUndersurface water resources play an important role in the supplication of Iran's water needs. And the town of Arak as the fourth industrial pole of the country is severely dependent on the water resources of Aman Abad area, located in the southeast of Ar
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Field Fluorometer for Simultaneous Detection of 3 Colourless Tracers
Authors P. A. Schnegg and P. MeusField hydrogeologists employ groundwater tracer tests with artificial tracers to demonstrate the underground interconnection between sinkholes and springs. In surface waters however, and particularly near the injection site, the intense water coloration c
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Prediction of Asphaltene Precipitation during Gas Injection in Heavy Crude Using Micellization Model with a New Approach
Authors R. Kharrat, M. Tavakkoli, M. Masihi and M. H. GhazanfariIn this work, first, the characterization method which is usually used in the solid model was applied and the total amount of resin and asphaltene content were predicted. Then, the thermodynamic micellization model, using the obtained model parameters fro
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Well Testing While Production Logging
Authors P. Dewimille, V. Jaffrezic, J. L. Boutaud-De-La-Combe, J. Rochon, M. Azari, S. Roy, D. Dorffer, A. Webb and J. SinAn innovative cyclic well testing technique was developed in which a cyclic wave function is imposed in the wellbore by modulating the flowrate. The analysis of the acquired rate function and the resulting pressure wave will then provide formation propert
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Establishing a Geomechanical Workflow for Time-lapse Modelling of an HPHT Field
Authors O. P. Dybvik, L. Gemmer, U. Theune and S. ØstmoIn this paper, we present a workflow that extends the conventional time-lapse seismic modelling workflow to include production-related geomechanical stress and deformation changes inside and outside the reservoir. The major new part of the workflow is a g
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4D Time Shifts Caused by Depleting a HPHT Reservoir – An Example from the Kristin Field
Authors O. Hansen, H. A. Aronsen and S. ØstmoA pre-survey 4D feasibility study reveals that time shifts may be expected across the HPHT Kristin Field in the Haltenbanken area offshore mid Norway due to pore pressure reduction. The seismic 4D surveys are based on the same acquisition technology - bas
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Monitoring Surface Deformation over a Hydrocarbon Reservoir by PSInSAR – The Added Information of the Horizontal Component
Authors H. Klemm, I. Quseimi, F. Novali and A. FerrettiWe use PSInSAR, acquired with two different look directions to disentangle the vertical and horizontal deformation over a hydrocarbon reservoir in the Middle East. The deformation rates as measured by PSInSAR compare well with the deformation rates measur
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Areal Resolution of Differential Microgravity Logs – A First Look
By T. MeyerTime lapse log data that are sensitive to changes in reservoir state far removed from the wellbore have significant potential for inferring changes in geophysical properties at an inter-well scale. This especially holds when such data are integrated with
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Subsidence in the Netherlands – Measuring, Matching, Monitoring, Modelling
Authors P. A. Fokker, J. Gunnink, I. C. Kroon, G. de Lange, A. G. Muntendam-Bos and M. NepveuSubsidence in the Netherlands is an important socio-economic problem. An integrated approach is required to assist taking policy decisions which involve subsidence. In addition, subsidence estimates can help in subsurface modelling and production optimiza
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A Literature Review on Smart Gas Lifting
Authors F. Bahaloo and S. A. TahamiUntil now, choosing an optimal production strategy for a hydrocarbon-bearing reservoir, needs to be done on basis of very few data. Processes like fluid flow, and properties like fluid composition, porosity, permeability, and temperature can only be measu
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Mature Basins, Maturing our Thinking
By M. G. AmesQ001 Mature Basins Maturing our Thinking M.G. Ames* (Cirrus Energy Corporation) SUMMARY 71 st EAGE Conference & Exhibition — Amsterdam The Netherlands 8 - 11 June 2009Whether you believe in peak oil or not most of us in this industry will spend most or even all our careers working in mature basins. By better understanding how mature basins evolve each of us whether representing large companies or very small contractors or host governments can choose to focus on those areas and capabilities where they add the most value. What is a mature basin? Viewed through the lens of operations it
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Growing up in Mature Areas – What Are The Benefits of Staying Home As Long As You Can?
By L. HambergQ002 Growing up in Mature Areas - What Are The Benefits of Staying Home As Long As You Can? L. Hamberg* (DONG Energy A/S) SUMMARY 71 st EAGE Conference & Exhibition — Amsterdam The Netherlands 8 - 11 June 2009Introduction For more than 20 years DONG E&P has operated in the mature areas of the North Sea primarily in Norwegian and Danish waters. During this period the company evolved from a licence partner undertaking state interests to an attractive operator on commercial terms equal to independent companies. DONG E&P holds a good track record with a North Sea Norway/Denmark portfolio
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A Strategic Focus to Explore in Mature Basins
By N. MadenQ003 A Strategic Focus to Explore in Mature Basins N. Maden* (Petro-Canada) SUMMARY 71 st EAGE Conference & Exhibition — Amsterdam The Netherlands 8 - 11 June 2009At the end of 2003 Petro-Canada took the strategic decision to focus its exploration effort on the countries and basins in which it had existing material production. This strategic shift came about as the result of the integration of the Veba International assets into the Petro-Canada portfolio and also as a result of a number of largely unsuccessful years exploring in the more “frontier” Canadian basin. It was felt that enough undiscovered potential
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Exploring in Mature Basins – A Consultants Perspective
By D. ParkinsonQ004 Exploring in Mature Basins - A Consultants Perspective D. Parkinson* (Wood Mackenzie Ltd) SUMMARY 71 st EAGE Conference & Exhibition — Amsterdam The Netherlands 8 - 11 June 2009Exploration remains probably the best means for upstream companies to create value. We have analysed returns achieved by the exploration industry based on the comparison of global investment in exploration with the value of new field discoveries made. The historical trend picture is positive but only just. And of course not all companies and not all basins are successful. Exploration economics have fundamentally shifted since 2004 with the impacts of increased
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Exploring the Established Petroleum Provinces of the NCS
More LessQ005 Exploring the Established Petroleum Provinces of the NCS T.S. Sjøblom* (StatoilHydro) SUMMARY 71 st EAGE Conference & Exhibition — Amsterdam The Netherlands 8 - 11 June 2009StatoilHydro’s exploration in the established petroleum provinces of the North Sea and Halten/Dønna Terrace has been highly successful in recent years providing resources to infrastructure with spare capacity and occasionally providing discoveries with stand-alone potential. The success rate in these areas is typically between 50-80% and the accumulation sizes typically range from 20 – 100Mboe. Despite many small discoveries commercialization is likely in most of the accumulations proven. Examples of successful StatoilHydro exploration
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From an Ugly Duckling to a Cygnus – How a Mature Basin Provided a Perfect Foundation for an Utility Entering the E&P Arena
By A. SpencerQ006 From an Ugly Duckling to a Cygnus - How a Mature Basin Provided a Perfect Foundation for an Utility Entering the E&P Arena A. Spencer* (GDF SUEZ E&P UK Ltd) SUMMARY 71 st EAGE Conference & Exhibition — Amsterdam The Netherlands 8 - 11 June 2009This presentation describes how a Utility with no previous exploration and production history laid the foundations for a significant E&P division by exploiting remaining potential in a mature basin. The Utility in question was Gaz de France (GDF) now GDF SUEZ since 2008. The story began in the late 1990s when GDF came to
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Exploration in a Mature Basin – Carboniferous – Old Reservoir, New Play, New Basin Opener
By C. FlavellQ007 Exploration in a Mature Basin - Carboniferous - Old Reservoir New Play New Basin Opener C. Flavell* (Tullow Oil Plc) SUMMARY 71 st EAGE Conference & Exhibition — Amsterdam The Netherlands 8 - 11 June 2009In 2001 Tullow Oil completed the acquisition of a portfolio of assets in the UK Southern North Sea from BP. The focus of these assets was a number of mature yet declining gasfields including Hewett Thames Gawain Orwell Murdoch and Boulton. Additional to these were a number of near-term development opportunities including Horne and Wren Wissey and the innovative CMSIII project where 5 Carboniferous
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Analysis of Dynamic Fracture Behaviour Using 4D Seismic Data
Authors H. G. Borgos, B. Savary-Sismondini, M. Nickel and L. SonnelandThis paper presents a new methodology for analysing dynamic behaviour of fractures or fracture systems from time lapse seismic data. It is previously demonstrated how a static fracture pattern can be analysed using discontinuity enhancing seismic attribut
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Model for Multiple Fluid Contacts in a Connected Reservoir and Its Applications
Authors M. Pelissier, B. Z. Shang and D. CasabiancaThis paper presents some principles that explain multiple fluid contacts in a hydraulically connected system at steady state. A connected reservoir with separate aquifers can have different contact levels. The aquifer size impacts the contact elevation. M
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Optimized Integration of Geophysical and Field Production Data for Reservoir Modelling and Asset Development
Authors R. Maguire, L. de Groot, A. Castoro and D. ForsythThis paper describes the seismic to simulation workflow followed to create a fine-scale reservoir model for dynamic simulation. The workflow integrates all available geophysical, geological and engineering data and demonstrates advances in seismic inversi
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Reservoir Characterization for Improved Modelling of Tidally-influenced Reservoirs, Heidrun Field, Norway
Authors B. L. S. Leren, G. Lescoffit, J. F. Strømsvik, B. T. Oftedal, A. Næss and A. MartiniusThe current paper documents the work from the Upper Tilje Formation on the Heidrun Field, Norway. The main goal was to revise the conceptual depositional model and consider possible subzonation to better characterize the flow elements: thief zones, barrie
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Evaluating Different Approaches of Permeability Modeling in Heterogeneous Carbonate Reservoirs
Authors F. Khoshbakht, M. Mohammadnia, A. M. Bagheri, A. A. RahimiBahar and Y. BeiraghdarPermeability, the ability of rocks to flow hydrocarbons is directly determined in the laboratory on cores taken from the reservoir. Due to high cost associated with coring, many empirical models, statistical methods and intelligence techniques were sugges
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Hydrocarbon Characterization of the Minagish Reservoir (Lower Cretaceous) in Kuwait
Authors S. A. Q. Qabazard and F. H. AbdullahThe Lower Cretaceous Minagish Formation in Kuwait is a principal carbonate oil reservoir in the southern oil fields. The formation has been investigated petrographically as well as some organic geochemical analyses using Rock-Eval pyrolysis method. The
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Seismically Driven Fractured Reservoir Characterization Using an Integrated Approach – Joanne Field, UK
Authors J. G. Ross, A. Zellou and D. KlepackiThe Joanne Field is an Upper Cretaceous Chalk reservoir in the UK sector of the Central North Sea. Over the production life of the field it has become increasingly apparent that the presence of fracturing has a significant impact upon the efficacy of the
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Simple Zonation and Principal Component Analysis for Speeding Up Porosity and Permeability Estimation from 4D Seismic and Production Data
Authors M. Dadashpour, D. Echeverría Ciaurri, T. Mukerji, J. Kleppe and M. LandrøSimple zonation and a mathematical transformation based on principal component analysis are used in a distributed computing environment for the estimation of porosity and permeability from production and 4D-seismic data, in the form of zero offset amplitu
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Assessing the Value of Time-lapse Seismic in History Matching and Forecasts of the Schiehallion Field
Authors K. D. Stephen and N. EdrizHistory matching is performed by reducing the difference between observed dynamic data and predictions based on reservoir simulations. Time-lapse (4D) seismic offers spatial information in the inter-well region and acts as additional constraints to more c
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Well Performance Diagnostics by Integrating 4D Seismic in a Coupled Fluid Flow/Geomechanical Model
Authors J. Haukaas, J. Bakke and L. SonnelandIn this paper we present an integrated workflow for modeling and monitoring geomechanical effects in and around a producing reservoir stimulated by injection. The novelty of the workflow is the updates of a coupled fluid flow / geomechanical model based o
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Improved Characterization of Fault Zones by Quantative Integration of Production and Seismic AVAZ Data
Authors A. Ali, A. Shahraini and M. JakobsenThis paper proposes a method for the parameterization and quantification of reservoirs which consist of fault core along with a damaged zone using integration of seismic and production data. We will try to represent the faulted reservoir models with relat
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Increase of Efficiency of Soil Remediation from Radioactive Pollution
Authors O. K. Tyapkin, A. G. Shapar, M. A. Yemets and O. G. BilashenkoUkraine intends to become the full member of the European Union and consequently should demonstrate the decision by the adequate responsibilities and actions. One of bases of the sustainable development of Ukraine is the modern nuclear fuel cycle (complex
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Anomalous Geo-magnetic Effect of Acid Producing Reactions in Mine Wastes
More LessMining waste deposits are today one of the biggest environmental problems, whose solving is urgently demanded because of the important negative impact upon the human society that they represent. Analyzing the geochemical and mineralogical processes that o
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Redevelopment of the Schoonebeek Oil Field, Netherlands – Tackling a Giant with the Necessary Detail
Authors M. de Keijzer, A. Boscolo, T. Evers, A. Foster, D. den Hartog Jager, F. Jelgersma, F. de Mik, O. Shokoya and T. VandeweyerAfter full abandonment in 1996, redevelopment of the 1 billion bbls Schoonebeek oil field (Cretaceous Bentheim sandstone reservoir) is attractive. The field contains viscous (25°API, 160 cP in situ) and waxy oil. The western part, known as the Solution Ga
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Stratigraphic Inversion for CO2 Monitoring Purposes – A Case Study for the Saline Aquifer of Sleipner Field
Authors N. Delépine, V. Clochard, K. Labat, P. Ricarte and C. Le BrasFor years, theoretical advances and algorithm improvements in stratigraphic inversion of seismic data have been carried out in the petroleum industry for better reservoir characterization and enhanced oil recovery. Nowadays, these techniques may also be u
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Updating the Simulation Model Using 4D-derived Fault Transmissibility Multipliers – An Application to the Heidrun Field
Authors A. Benguigui and C. MacBethThe quantification of the sealing capacity of fault rock represents one of the major challenges in the study of compartmentalized reservoirs. In particular, fault seal properties may degrade flow affecting the recovery whilst the reservoir is depleted. In
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