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67th EAGE Conference & Exhibition
- Conference date: 13 Jun 2005 - 16 Jun 2005
- Location: Madrid, Spain
- Published: 13 June 2005
201 - 250 of 683 results
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Fractured Reservoir Permeability Structure Constrained by Geomechanical and DFN Models
Authors P. Neff, R.V. Ackermann, S.J. Dee, G. Yielding, B. Freeman and L. GhilardiniE036 Fractured Reservoir Permeability Structure Constrained by Geomechanical and DFN Models 1 Ackermann R.V. 1 Dee S.J. 2 Yielding G. 2 Freeman B. 2 Ghilardini L. 3 . Neff P. 3* 1 Beicip Inc. 1880 South Dairy Ashford Suite 630 Houston Texas 77077 U.S.A. 2 Badley Geoscience Ltd North Beck House North Beck Lane Hundleby Lincolnshire PE23 5NB England 3 Beicip-Franlab 232 Avenue Napoleon Bonaparte 92502 Rueil Malmaison France Fractured reservoir models are used for several different purposes from prospect generation and well planning reservoir simulation and depletion planning to risk assessment and reserve calculations. They can be constructed from
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Use of Outcrop Analogues in Fractured Reservoir Characterization – An Example from the Dezful Embayment, SW-Iran
Authors O.P. Wennberg, M. Azizzadeh, E. Blanc, P. Brockbank, K.B. Lyslo, S. Ogilvie, L.D. Salem and T. SvånåE037 Use of outcrop analogues in fractured reservoir characterization – an example from the Dezful Embayment SW-Iran O. P. Wennberg 1 M. Azizzadeh 2 E. Blanc 3 P. Brockbank 1 K.B. Lyslo 1 S. Ogilvie 1 L.D. Salem & T. Svånå 1 Introduction: 1 1) Statoil ASA N-4035 Stavanger Norway; 2) RIPI Tehran Iran; 3) CASP West Building 181A Huntingdon Road Cambridge CB3 0DH - UK Several giant oil fields in the Dezful Embayment in SW Iran (Figure 1) produce from the carbonates of the Asmari Formation (Late Oligocene - Early Miocene) where production depends strongly on the existence of
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More Powerful Fracture Detection – Integrating P-Wave, Converted-Wave, FMI and Everything
Authors D. Todorovic-Marinic, B. Mattocks, R. Bale, D. Gray and J. DewarE038 More Powerful Fracture Detection: Integrating P-wave Converted-wave FMI and Everything Abstract 1 Knowledge of the orientation and distribution of fractures can be critical to exploration success; the advantage of seismically driven fractured reservoir characterization is accurate estimation of the fracture distribution between wells. The key to using seismic to characterize fracturing is to measure and understand anisotropy. Measuring and understanding this anisotropy – which is encrypted in various types of seismic data - will lead us to more reliable descriptions of fracture density orientation connectivity and permeability pathways in fractured reservoirs. The study presented here shows how to use
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Faulting in Poorly Consolidated Sediments – Examples from the Upper Cretaceous Ferron Sandstone, Utah
Authors A. Rotevatn, Å. Vassel, J.A. Howell and J. HesthammerE039 Z-99 FAULTING IN POORLY CONSOLIDATED Introduction 1 CLASTIC SEDIMENTS – EXAMPLES FROM THE UPPER CRETACEOUS FERRON SANDSTONE UTAH A. ROTEVATN 1 Å. VASSEL 1 J.A. HOWELL 1 AND J. HESTHAMMER 1 Structural core analysis from the middle Jurassic Brent Group offshore Norway indicates that faulting in reservoir sandstones may have occurred when the sediments were unconsolidated or poorly consolidated (e.g. Hesthammer & Fossen 2001). In the Ivie Creek- Blue Trail Canyon area Central Utah a field study was undertaken in similar type rocks to investigate fault geometries associated with deformation in poorly consolidated sediments as well as the characteristics
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Analysis of Attenuation Anisotropy in Multi-Azimuth VSP Data from the Clair Field
Authors S. Maultzsch, M. Chapman, E. Liu and X.-Y. LiE040 Z-99 Analysis of attenuation anisotropy in multiazimuth VSP data from the Clair field Abstract 1 We present an analysis of P-wave attenuation anisotropy in multi-azimuth walkaway VSP data from the Clair field. We find that the data recorded in the fractured oil-saturated reservoir show a consistent azimuthal variation in attenuation. This pattern cannot be observed in data recorded above the reservoir. The measured azimuth of minimum attenuation is close to the strike of open fluid-filled fractures mapped from cores and borehole image logs. The results therefore suggest a link between the attenuation pattern and the orientation of open fractures
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Gas Hydrate Exploration with 3D VSP Technology, North Slope, Alaska
Authors D. McGuire, S. Runyon, T. Williams, B. Paulsson, A. Goertz and M. KarrenbachGas hydrate exploration with 3D VSP technology North Slope Alaska Donn McGuire* Anadarko Petroleum Corp Steve Runyon and Tom Williams Maurer Technology Inc. and Bjorn Paulsson Alex Goertz and Martin Karrenbach Paulsson Geophysical Services Inc. Summary A 3D VSP survey was recorded in February 2004 in conjunction with a continuously cored hydrate exploratory well on the North Slope of Alaska. The purpose of the VSP was to identify and delineate lateral variations in the subsurface within the hydrate stability zone (HSZ) by using high frequency seismic sources arrayed in a 3D surface pattern and high-density 3 component geophones in the
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Heavy Oils - Seismic Properties
Authors M. Batzle, B. Zadler, R. Hofmann and D.-H. HanHeavy Oils – Seismic Properties Michael Batzle* Brian Zadler Ronny Hofmann Colorado School of Mines De-hua Han University of Houston Summary Heavy oil properties are strongly dependent on composition and temperature. Because of biodegradation alkanes are destroyed and complex heavy compounds dominate. As a result the trends for velocities gas-oil ratios well as for viscosities developed for light oils often do not apply to heavy oils. For heavy oils at low temperatures the viscosity increases and the material can act like a solid. This glass-like behavior results in the ability of the material to have an effective shear modulus and
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Same Cable, Different Vector Fidelity - A Case Study of the Seneca Lake and Valhall LoFS OBC Datasets
Authors J. Dellinger and R. Clarke¢¡¤£¦¥¨§©¡�����¥¤��������¥���¥�������¥�§����¤������¥���������� ¡�§©¡¤��¥¨�����������¤������¥� ¢¥���¥�§©¡���¡��¤¥¨¡¤������¡¤����¡¤�������¤�� ���������¡���¡���¥���� �����������������������������������������������������������������������¦������������� �¤����������� �����������������������������©��������������������������������������������������������� ��������������������������������������������������������������������������������������������� ������������������������������������������������������������������������������������������� ����������������������������������������������������������������������������������������� �������������������������������¨����������������������������������������������������������� �����������������������������������������������������������������������������©������� ����������������������������������������������������������������������������������������� ����������������������������������������������������������������������������������������������������� ������������������������������������������������������������������������������������������������� ����������������������������������� ��������������������������������������������������������������������������������������� ����������������������������������������������������������������������������������������������� ��������������������������������������������������������������������������������������������� �¢������������������������������������������������������������������������������������� ����������������������������������������������������������������������������������������� �������������������������������������������������¤������������������������������������������� ��������������������������������������������������������������������������������������������� �������������������¤�����������������������������¢��������������������������������������������������������� ��������������� � ������� ������� ��� ������� � � ����� �����������������������������������������������������������������¨����������������� �������������������������������¨�������������������������������¨����������������������� ������������������������������������������������������������������������������������������� ��������������������������������������������������������������������������������������������� ������������������������������������������������������������������������������������� ��������������������������������������������������������������������������������������������� �������������������������������������������������������������������������������������¢��� ������������������������������������������������������������������������������������������� �����������������¢�����������������������������������������������������������¢������������� ������������������������������������������������������������������������������������� ���������������������������������¢����������������������������������������������� �����������������������������������������������������¢��������������������������������� ������������������������������������������������������������������������������������� � ����������� ����������������������������������������������������������������������������������������� ��������������������������������������������������������������������������������������������� ��������������������������������������������������������������������������������������������������� �����������������������������������������������������������������������������������������¢��� ��������������������������������������������������������������������������������������������������� �����������������©����������������������������������������������������������������������� ����������������������������������������������������������������������������������������������������� ����������������������������������������������������������������������������������������������� ����������������������������������������������������������������������������������������� ��������������������������������������������������������������������������������������� �����������¢��������������������������������������������������������������������������������� ������������������������������������������������������������������������������������������� ������������������������������������������������������������������������������������������������� �����������¢���������������������������������������������������������������������������¢����� �����������������������������¤������������������������������������������������������������������������� �������������������������������������������������������������������¡ ¢��� �£¢������ ������������������� �����¦¥ � ¤ ¥ ��������������������������� �������§¥ �������©¨�������¥ ���������� ������������£� ���£� ���£� � � � � ��� ¤ ¤ ����� ���¡¢���¢������ ¤ �������������������������¦¥ � ¤ ¥ �����������������¡¥ ����������¥ ����� ������ ¢������� ��� ¤ �������¡¥ ��¥ �£¥ �§¥ ���¤��������������������������� ¤
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Seismic Anisotropy of Shales - What Determines the Sign of Thomsen's Delta Parameter?
By C.M. SayersSeismic anisotropy of shales: What determines the sign of Thomsen’s delta parameter? Colin M. Sayers* Schlumberger Summary Shales are a major component of sedimentary basins and are anisotropic because of the partial alignment of platelike clay minerals. Shale anisotropy needs to be quantified to reliably extract reservoir fluid lithology and pore pressure from seismic data and to understand time-to-depth conversion errors and non-hyperbolic moveout. A single anisotropy parameter δ is sufficient to explain the difference between the small-offset normal moveout velocity and vertical velocity and to interpret the smalloffset AVO response of P-waves (Thomsen 1986). The sign of this parameter
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Estimating the Value of Seismic Data at Survey Decision Time
More LessE045 Estimating the value of seismic data at survey decision time. Abstract 1 Using Bayesian theory it is demonstrated how the Expected Monetary Value (EMV) of seismic data can be calculated before a seismic survey is initiated. The procedure is illustrated on a hydrocarbon detection problem and on a structural resolution problem. Applying this procedure for calculating EMV one might compare a seismic project on an equal footing with any other projects competing for available funds. This approach can also be used to prioritize seismic tenders making sure that the survey acquisition or processing alternative that in fact is best
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EGEODE – A Grid Infrastructure for Research in Geosciences
Authors D. Thomas and M. PetitdiderE046 EGEODE: a Grid Infrastructure for Research in Geosciences Summary 1 The paper explains the main benefits of this Grid Computing emerging technology for geosciences and particularly for data sharing and processing in the geophysical industry. Then we introduce EGEODE the “Expanding Geosciences On Demand” Open Virtual Organization with a practical description of how to join the community and become an actor in this exciting project. Introduction Modern seismic data processing and geophysical simulations require more and more huge amount of computing power. The research community hardly keeps pace with this evolution resulting in difficulties for small or medium research
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Combining the Benefits of Structured and Spatial Databases
Authors V. Hirsinger, R. Bruinsma and N. BallsE047 Combining the Benefits of Structured and Spatial Databases Abstract 1 Spatial knowledge is a key component of petroleum exploration and production objects. From the regional delineation of fields and prospects through the legal definition of lease outlines via the geotechnical surveying processes to the detailed exploitation of reservoirs and on to the management and maintenance of surface infrastructure a precise knowledge of the complete shape and location is critical. This paper discusses how practical EP spatial data management is often split into two cultures and describes how the latest generation of spatial database technology can bridge the differing approaches
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Integrated Tools to Enhance Collaborative Work and Data Handling in Geosciences
By P. DiviaccoE048 Integrated tools to enhance collaborative work and data handling in geosciences Summary 1 A new tool based on Open Source software is presented that ease at the same time data handling and collaborative work in geosciences and in particular in the field of geophysics. This requires data to be moved from traditional media to computer based storage systems allowing it to be accessible from a web based data retrieving and analysing portal. To organize and search the mass of data and metadata a relational database linked to the web server should be used. In this framework vertical applications that
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Hydrocarbon Probability Index Based on Ann and Prestack Attributes
Authors F. Aminzadeh, C. Ross, P. de Groot and F. BrouwerF001 HYDROCARBON PROBABILITY INDEX BASED ON ANN AND PRESTACK ATTRIBUTES Summary 1 Risk assessment for hydrocarbon-saturated reservoirs can be improved using neural network classification methods when combined with interpreter's knowledge and multitude of prestack attributes. Training data selected over background events and known hydrocarbon deposits permits calibration of untested reservoirs which in turn improves the pre-drill prediction process as well as the range of possible outcomes thus providing a measure of the uncertainty. The Gulf of Mexico examples presented here demonstrate the potential for improved reservoir assessment and exploration risk reduction with the aforementioned technique. Introduction With the proliferation of
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Reservoir Characterization in Volcaniclastics
Authors A. Ortin, E. Sanchez and U. BustosF002 Z-99 Reservoir characterization in volcaniclastics Abstract 1 Several methods for reservoir evaluation and hydrocarbon detection in complex environments have been developed in the oil industry. Those techniques focused to get petrophysical properties and water saturations -where resistivity-based analysis are not accurate- were inefficient in reducing the uncertainty to acceptable levels especially in volcaniclastic lithologies. Recent hydrocarbon discoveries in these complex environments in Neuquén (Argentina) encouraged the expansion of exploration frontiers to deep reservoirs and consequently the requirement of reservoir models to better understand the hydrocarbons occurrence. A reservoir characterization was performed with the following approach: 1.Integration of petrophysical evaluation
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Uncertainty Estimation in Seismic-Based Porosity and Saturation Inversion – Examples from Unconsolidated and Hard Rock Environments
By R. BachrachF003 Uncertainty estimation in seismic-based porosity and saturation inversion: Examples from unconsolidated and hard rock environments Abstract 1 Uncertainties associated with predicting pay saturation and porosity in the subsurface are related not only to seismic inversion accuracy resolution and confidence in rock-physics relations but also to diagenetic processes associated with porosity reduction processes and hydrocarbon migration into the reservoir. In this paper we use stochastic simulation techniques and formal Bayesian inversion to explore the uncertainty associated with porosity and saturation estimates obtained in two prototypical environments: a consolidated hard sand reservoir in east Texas and soft unconsolidated sediments in marine
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Seismic Multi-Attribute Analysis for Lithology Discrimination in the Ganso Field, Oficina Formation, Eastern Venezuela
More LessF004 SEISMIC MULTI-ATTRIBUTE ANALYSIS FOR LITHOLOGY DISCRIMINATION IN THE GANSO FIELD OFICINA FORMATION EASTERN VENEZUELA Abstract 1 Even extensively drilled and supposedly well-understood fields have the capacity to surprise. Whilst drilling a fairly routine development well in the Ganso field Oficina Basin Eastern Venezuela ENI Dación discovered a new accumulation reservoired in a high quality channel facies sandstone 30ft thick and full of relatively light oil. The reservoir flowed at the excellent rate of 950 bopd with 0% watercut on testing. The unexpected element of this discovery was that the accumulation was found with the landing section of a horizontal
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Long Offset Simultaneous Inversion for Seismic Reservoir Characterisation a Case Study – Gryphon Field
Authors C. Reiser, B. Deschizeaux, Y. Freudenreich and O. KirstetterF005 LONG OFFSET SIMULTANEOUS INVERSION FOR SEISMIC RESERVOIR CHARACTERISATION A CASE STUDY: THE GRYPHON FIELD Abstract 1 The work presented in this paper consists of a 3-D long offset pre-stack simultaneous inversion study on the Gryphon Field North Sea. The injected sands reservoir in the Balder formation represents the main reservoir of this field. The use of higher angles should provide better understanding of the reservoir in terms of fluid distribution in the Balder and in the injected sands of the Frigg formations. The aim was to recover the density information from the long-offset seismic as well as the common
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Improved Low Frequency Model Building for Seismic Inversion
Authors R. van Boom and V. BetzlerF006 IMPROVED LOW FREQUENCY MODEL BUILDING FOR SEISMIC INVERSION R. VAN BOOM* V. BETZLER EAGE 67th Conference & Exhibition — Madrid Spain 13 - 16 June 2005 1 Wintershall Noordzee B.V. Eisenhowerlaan 142 2508 EH The Hague The Netherlands Abstract Seismic inversion to acoustic impedance can only be useful for exploration purposes if the low frequency part can be adequately modeled. In areas of limited velocity information regional information can be extrapolated into the area under investigation to build a more reliable model needed for inversion. We present a way for improving the low frequency model by taking into account
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Spectral Decomposition – Transform Methods and Fluid and Reservoir Prediction Case Study
Authors M. Rauch-Davies and M. RalstonF007 Abstract 1 The spectral decomposition of seismic amplitude data has gained significantly in popularity over the last few years and has been successfully used for reservoir fluid prediction. Several different methods of spectrally decomposing seismic amplitude data are possible with commercially available software packages. However the majority of these applications do not produce time-frequency representations with sufficient spatial and temporal resolution for reliably predicting fluids and reservoir character. This paper discusses a comparison between the two commonly used spectral decomposition methods: (1) the Short Term Fourier Transform (STFT) and (2) the Wavelet Transform (WT); and (3) the less often
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The Links between Global Hydraulic Elements, Facies, Grain Size and Sorting
Authors D.K. Potter and J.A. KooistraF008 THE LINKS BETWEEN GLOBAL HYDRAULIC ELEMENTS FACIES GRAIN SIZE AND SORTING Abstract 1 J. A. KOOISTRA and D. K. POTTER Institute of Petroleum Engineering Heriot-Watt University Edinburgh EH14 4AS United Kingdom A significant relationship between global hydraulic elements (GHEs) and facies is shown to exist for different facies types which have historically been hard to distinguish. This link would not have been recognised using conventional hydraulic flow unit analysis (Amaefule et al 1993) which is not able to compare data from different sample populations. The data used in the present study comprised almost 4000 core plugs derived from over
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Bootstrapping AVA for Uncertainty Assessment in Lithology and Fluid Identification
Authors E.F. Gonzalez, G. Mavko and T. MukerjiF009 BOOTSTRAPPING AVA FOR UNCERTAINTY ASSESSMENT IN LITHOLOGY AND FLUIDS IDENTIFICATION Abstract 1 We present a methodology for estimating an important source of uncertainty when using AVA for lithology and fluids prediction. The main idea is to bootstrap the regression between seismic amplitudes and incidence angle and perform a statistical classification of the computed AVA attributes. Moreover the proposed method specifically applying a regression that minimizes the median of squared residuals can be used as an automatic tool for detecting data inconsistencies. As an example the method was applied to a real data set from the Glitne field in North
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Neural Modeling of Shear Wave Sonic Logs
Authors R.K. Fruhwirth and S.P. SteinlechnerF010 Neural Modeling of Shear Wave Sonic Logs Abstract 1 In this paper we show a neural network based nonlinear regression to develop a relationship between shear wave log data and a set of other well logs to predict pseudo shear wave logs in a well that does not contain shear wave information. We use a special network architecture in combination with parallel learning automatic network growing and sophisticated stopping criteria that allows an efficient and robust estimation of the optimal network size for this particular problem. Initially we use gamma-ray two resistivity and the p-wave sonic logs as model
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Seismic Fluid Prediction in Poorly Consolidated and Clay Laminated Sands
Authors P. Avseth, A.-J. van Wijngaarden, H. Flesche, T. Fristad, J. Rykkje and G. MavkoF011 Z-99 Seismic fluid prediction in poorly consolidated and clay laminated sands Abstract 1 Per Avseth 1 Aart-Jan van Wijngaarden 1 Harald Flesche 1 Torbjørn Fristad 2 Johannes Rykkje 1 and Gary Mavko 3 1) Hydro Research Center Bergen Norway; 2) Hydro Exploration Sandvika Norway; 3) Stanford University California USA Rock physics models based on contact theory have been used successfully to predict lithology and pore fluids from well log and seismic data (Mavko et al. 1998; Avseth et al. 2005). However several studies have indicated that shear wave velocities in poorly consolidated sands are often lower than predicted by
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AVO Analysis with an Optimal Linear AVO Approximation
Authors E. Causse, M. Riede, A.J. van Wijgaarden, A. Buland, J.F. Dutzer and R. FillonF012 AVO analysis with an optimal linear AVO approximation Introduction 1 In AVO analysis it is usual to approximate AVO responses by linear approximations involving trigonometric functions of the reflection angle θ. These approximations normally assume that the contrasts of the seismic parameters across reflectors are small. They may be rather inaccurate e.g. close to the critical angle and these inaccuracies in some situations may strongly affect the quality of the AVO analysis. We present a method (called OptAVO) that enables to build more accurate linear AVO approximations. The coefficients of the basis functions of the new approximation represent new
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Joint Porosity-Impedance Estimation from Seismic Waveform Inversion
By M. BoschF013 Z-99 Joint porosity-impedance estimation from seismic waveform inversion Abstract 1 EAGE 67 th Conference & Exhibition — Madrid Spain 13 - 16 June 2005 MIGUEL BOSCH Geophysical Simulation and Inversion Laboratory Department of Applied Physics Universidad Central de Venezuela (E-mail: [email protected]) Common estimation of porosity from seismic data is made indirectly by deriving impedance estimates or seismic attributes from the seismic data in a first step. The results are used to infer porosity from petrophysical information. In this work I describe a unified approach to solve the problem of porosity estimation from seismic data. This approach requires to define
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AVA Stochastic Inversion of Pre-Stack Seismic Data and Well Logs for 3D Reservoir Modeling
Authors A. Contreras, C. Torres-Verdin, K. Kvien, T. Fasnacht and W. ChestersF014 T-15 AVA Stochastic Inversion of Pre-Stack Seismic Data and Well Logs for 3D Reservoir Modeling Abstract 1 A. CONTRERAS 1 C. TORRES-VERDIN 1 K. KVIEN 2 T. FASNACHT 3 and W. CHESTERS 2 1 The University of Texas at Austin Department of Petroleum and Geosystems Engineering 1 University Station C0300 Austin Texas 78712 USA 2 Fugro-Jason Rotterdam 3 Anadarko Petroleum Corporation This paper describes the application of a novel AVA stochastic inversion algorithm to quantitatively integrate pre-stack seismic data and well logs. The stochastic inversion algorithm is used to characterize flow units of a deep-water Miocene reservoir located in
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Unconstrained Multi-Parameter AVO Inversion
More LessF015 Unconstrained Multi-parameter AVO Inversion Summary 1 PENGYUAN SUN YANPENG LI XIULI LU EAGE 67 th Conference & Exhibition — Madrid Spain 13 - 16 June 2005 BGP of CNPC Zhuozhou China The use of seismic data for estimation of lithology and reservoir properties is important in seismic exploration and reservoir characterization. In this paper a new method for extraction of the fundamental rock properties from pre-stack PP wave AVO is proposed. Unlike conventional AVO inversions the method re-expresses the PP wave AVO formula (Aki and Richards 1980) in terms of the three different angular reflection coefficients P-impedance reflectivity P-velocity
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Net Pay Estimation from Seismic Attributes
By P. ConnollyF016 Net pay estimation from seismic attributes 1 Abstract An improved method to estimate net pay from seismic attributes is presented. The outline of the process is: • Tune seismic response to reservoir property using extended elastic impedance theory • Apply coloured inversion and extract average amplitude and time thickness attributes • Model tuning response of wavelet detune and calibrate attributes The algorithm is validated by testing on synthetic data derived from power-law based geological models. Introduction The derivation of net pay estimates from seismic attributes is a technology that has been around for quite a while (Brown et al
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Seismic Hazard in the Istanbul Region, Turkey – How To Study a Submarine Fault
By R. ArmijoF017 SEISMIC HAZARD IN THE ISTANBUL REGION TURKEY – HOW TO STUDY A SUBMARINE FAULT Abstract 1 After the two disastrous earthquakes in 1999 the Istanbul-Marmara region appears threatened by the probable occurrence of one or more large earthquakes in the next few decades. As a response to this challenge the international scientific community reacted immediately proposing cutting edge projects in seismology space geodesy tectonics and marine geophysics. A French-Turkish research program was provided with important support and was achieved between 2000 and 2003. The outcome of that program summarized here demonstrates the relevance of an integrated study focused on
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Seafloor Deformation Related to the Great Sumatra-Andaman Earthquake of December 26, 2004
Authors P. Tapponier, L.C. McNeill and D.R. TappinF018 SEAFLOOR DEFORMATION RELATED TO THE GREAT SUMATRA-ANDAMAN EARTHQUAKE OF DECEMBER 26 2004 Abstract 1 The great 26/12/2004 Sumatra-Andaman earthquake requires a revision of generally accepted ideas on subduction zone mechanics. With a magnitude of 9.3 and a rupture duration on order of 500 seconds (8.3 minutes) this earthquake the second largest event recorded instrumentally ruptured a 1200 km-long section of the subduction interface between the Indo- Australian and Asian plates. The rupture jumped along strike from one plate boundary (Australia/Sunda) to the next (India/Burma) a circumstance never observed before. In so doing it crossed a triple junction concatenating two
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Geomorphology of the 26 December 2004 Indian Ocean Earthquake Rupture Zone – Results from the First Seafloor Survey Onboard the HMS Scott, 2005
More LessF019 GEOMORPHOLOGY OF THE 26 DECEMBER 2004 INDIAN OCEAN EARTHQUAKE RUPTURE ZONE – RESULTS FROM THE FIRST SEAFLOOR SURVEY ONBOARD THE HMS SCOTT 2005 Abstract 1 TIMOTHY J. HENSTOCK 1 LISA C. MCNEILL 1 DAVID R. TAPPIN 2 1 National Oceanography Centre Southampton University of Southampton Southampton SO14 3ZH UK 2 British Geological Survey Keyworth Nottingham NG12 5GG UK The 26 December 2004 Mw 9.3 Sumatra to Andaman Islands subduction zone earthquake was the second largest earthquake recorded. The tsunami generated by the earthquake caused the loss of ~300 000 lives and devastation of many Indian Ocean coastal communities. The
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The Questionability of Tsunami Warning Systems
More LessF020 THE QUESTIONABILITY OF TSUNAMI WARNING SYSTEMS Abstract 1 On December 26 Asia was shocked by one of the largest earthquakes from the last 100 years. Unfortunately the disaster did not end there and the earthquake was followed by a disastrous tsunami. An enormous wave hit many islands and countries in the region taking the lives of over 230.000 people. One important question that everybody asks about this disaster is: can and will it happen again? Unfortunately it can not be excluded. We can not regulate the occurrence of earthquakes and tsunamis. Any large earthquake with the right mechanism can
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Natural Hazards – Man-Made Disasters
More LessF021 NATURAL HAZARDS – MAN-MADE DISASTERS Abstract 1 Mankind evolved and has lived on planet earth over several million years co-existing with the hazards posed. Despite rapidly increasing knowledge concerning natural hazards and how to mitigate their consequences disasters originating from natural hazards do not appear to be reducing. In Algeria in a recent earthquake 80% of those who died did so in buildings less than 10 years old. Building standards may be well documented but simply not implemented. Further evidence comes from the tragic events during and following the 26 December 2004 when a magnitude 9 earthquake struck off
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Earthquake Hazard Assessment – Some Lessons Learned from the December 2004 Sumatra-Andaman Islands Earthquake and Indian Ocean Tsunamis
By M. FreeF022 EARTHQUAKE HAZARD ASSESSMENT – SOME LESSONS LEARNED FROM THE DECEMBER 2004 SUMATRA-ANDAMAN ISLANDS EARTHQUAKE AND INDIAN OCEAN TSUNAMIS Abstract 1 The devastation and loss of life caused by the December 2004 Sumatra-Andaman Islands earthquake and Indian Ocean tsunamis was a clear demonstration of the power and unpredictability of nature and the vulnerability of man. This catastrophe once again reinforced the urgent need for global attention to natural hazard and risk management. Identifying and assessing natural hazards is an essential component of the risk management process. This paper provides an overview of earthquake-related hazards as well as guidance on how
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Sumatra-Andaman Great Earthquake Research (SAGER) Initiative
By S. SinghF023 Sumatra-Andaman Great Earthquake Research (SAGER) Initiative Abstract 1 SATISH C. SINGH AND SAGER TEAM Laboratoire de Géoscieces Marine Intitut de Physique du Globe de Paris 4 Place Jussieu 75252 Paris Cedex 05 France The disastrous tsunami from the Great Sumatra earthquake of December 26 2004 killed over 250 000 people in South-East Asia and is responsible for unaccountable loss of properties. The main earthquake (Mw=9.3) the biggest such event for the last forty years occurred along the major Sumatra subduction zone from Sumatra up to Andaman Islands. The earthquake initiated at about 50 km depth and ruptured over 1250
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Environmental Assessment After Decommissioning at the Offshore North Sea – Frøy Oil Production Site – A New Field Proven Methodology (SPE94064 )
Authors S. Plisson-Sauné, J. Beyer, U.E. Moltu, L. Pinturier, R. Sundt, H. Berland and A. BjørnstadSPE 94064 Environmental Assessment After Decommissioning at the Offshore North Sea - Frøy Oil Production Site: A New Field Proven Methodology S. Plisson-Sauné SPE TOTAL E&P; J. Beyer RF-Akvamiljø; U.E. Moltu and L. Pinturier TOTAL EP NORGE; and R. Sundt H. Berland and A. Bjørnstad RF-Akvamiljø Copyright 2005 Society of Petroleum Engineers This paper was prepared for presentation at the SPE Europec/EAGE Annual Conference held in Madrid Spain 13-16 June 2005. This paper was selected for presentation by an SPE Program Committee following review of information contained in an abstract submitted by the author(s). Contents of the paper as presented
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Mexico's Influence in the World's Oil and Gas Supply and Demand (SPE93301)
Authors S. Rojas, L. Saputelli and M.J. EconomidesSPE 93301 Mexico’s Influence in the World’s Oil and Gas Supply and Demand S. Rojas SPE PEMEX E&P; L. Saputelli SPE Halliburton and U. of Houston; and M. Economides SPE U. of Houston Copyright 2005 Society of Petroleum Engineers This paper was prepared for presentation at the SPE Europec/EAGE Annual Conference held in Madrid Spain 13-16 June 2005. This paper was selected for presentation by an SPE Program Committee following review of information contained in an abstract submitted by the author(s). Contents of the paper as presented have not been reviewed by the Society of Petroleum Engineers and are subject
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Adding Value through Integrated Research to Unlock the Tight Gas Potential in the Rotliegendes Formation of North-Germany (SPE94354)
Authors R. Gaupp, N. Liermann and G. PuschSPE 94354 Adding Value through Integrated Research to Unlock the Tight Gas Potential in the Rotliegendes Formation of North-Germany R. Gaupp University Jena; N. Liermann DGMK; and G. Pusch Technical U. Clausthal Copyright 2005 Society of Petroleum Engineers This paper was prepared for presentation at the SPE Europec/EAGE Annual Conference held in Madrid Spain 13-16 June 2005. This paper was selected for presentation by an SPE Program Committee following review of information contained in an abstract submitted by the author(s). Contents of the paper as presented have not been reviewed by the Society of Petroleum Engineers and are subject to
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CO2 Capture and Storage in Mature Oil Reservoir – Physical Description, EOR and Economic Valuation of a Case of a Brazilian Mature Field (SPE94181)
Authors A.T.F.S. Gaspar, G.A.C. Lima and S.B. SuslickSPE 94181 CO2 Capture and Storage in Mature Oil Reservoir: Physical Description EOR and Economic Valuation of a Case of a Brazilian Mature Field A.T. F. S. Gaspar SPE G.A.C. Lima SPE and S.B. Suslick SPE State U. of Campinas Copyright 2005 Society of Petroleum Engineers Inc. This paper was prepared for presentation at the SPE Europec/EAGE Annual Conference held in Madrid Spain 13-16 June 2005. This paper was selected for presentation by an SPE Program Committee following review of information contained in an abstract submitted by the author(s). Contents of the paper as presented have not been reviewed by
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Probabilistic Discharge Forecasting for Improved Asset Investment Decision Support (SPE94116)
Authors J.W. Jannink and C.F.M. BosSPE 94116 Probabilistic Discharge Forecasting For Improved Asset Investment Decision Support J.W. Jannink Accenture and C.F.M. Bos SPE TNO Netherlands Inst. of Applied Geoscience Copyright 2005 Society of Petroleum Engineers This paper was prepared for presentation at the SPE Europec/EAGE Annual Conference held in Madrid Spain 13-16 June 2005. This paper was selected for presentation by an SPE Program Committee following review of information contained in an abstract submitted by the author(s). Contents of the paper as presented have not been reviewed by the Society of Petroleum Engineers and are subject to correction by the author(s). The material as presented
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Satisfying Profitability and Non-Flaring Gas Policy in an Emerging Gas Market Context – A Case History (SPE94045)
Authors G. Boni, D. Castano, S. Dresda, E. Esor and C. MonicoSPE 94045 Satisfying Profitability and Non-Flaring Gas Policy in an Emerging Gas Market Context: A Case History G. Boni D. Castano and S. Dresda SPE Eni; E. Esor SPE Nigerian Agip Oil Co.; and C. Monico Eni Copyright 2005 Society of Petroleum Engineers This paper was prepared for presentation at the SPE Europec/EAGE Annual Conference held in Madrid Spain 13-16 June 2005. This paper was selected for presentation by an SPE Program Committee following review of information contained in an abstract submitted by the author(s). Contents of the paper as presented have not been reviewed by the Society of Petroleum
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Reflection Seismics Using Boreholes – Geological Validation of Reflectors
Authors P. Saksa, E. Heikkinen, T. Vaittinen, J. Palmén and T. AhokasF033 REFLECTION SEISMICS USING BOREHOLES – GEOLOGICAL VALIDATION OF REFLECTORS Abstract 1 Seismic 3D reflection investigations in different scales and geometries using boreholes in Olkiluoto spent nuclear fuel repository site were validated against geological and geophysical information from boreholes. Review included surface-to-borehole Walkaway-VSP results 3D VSP data of five boreholes at the site and crosshole seismic tomographic reconstruction and 3D DMO migrated reflection data from vertical plane between two deep boreholes. Processed and interpreted seismic data and models (Enescu et al. 2004b) were received from Vibrometric Ltd. The review performed in JP- Fintact (Heikkinen et al. 2004) consisted of projection
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Appraisal of Fault Connectivity and Reactivation Potential, Laminaria High, North West Shelf
Authors J. Slater and M. UrosevicZ-99 Appraisal of Fault Connectivity and Reactivation Potential Laminaria High North West Shelf F034 Abstract J. SLATER and M. UROSEVIC 1 Department of Exploration Geophysics Curtin University of Technology GPO Box U 1987 Perth WA 6845 E-mail: [email protected] E-mail: [email protected] Trap integrity particularly in regard to fault seal is considered a major exploration risk in the Timor Sea. We investigated trap integrity risk and related this to the present distribution of hydrocarbons in the Laminaria region. Due to notoriously poor seismic data quality over Laminaria High an integrated approach of 3D seismic interpretation seismic attribute analysis stress-based reactivation potential estimates
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Automatic Fault Extraction in 3D Seismic Interpretation
More LessF035 Automatic Fault Extraction in 3-D Seismic Interpretation Abstract 1 Fault interpretation remains one of the most tedious and time-consuming aspects of 3D seismic interpretation and geologic model building. Traditionally faults are manually picked from seismic data as discontinuities in seismic amplitude on sections slices or in volumes. There have been several attempts to automate fault interpretation in the past that have failed to deliver acceptable interpretations with less effort in less time than manual methods. In general these methods have required very high quality data sets with very simple fault geometries and significant user correction. The Automatic Fault Extraction
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3D Edge Preserving Smoothing and Applications
Authors N.M. AlBinHassan and Y. LuoF036 T-05 3D Edge Preserving Smoothing and Summary 1 This paper presents a new algorithm for reducing noise in seismic impedance cubes while preserving structural and stratigraphic discontinuities or edges. The method divides a moving 3D cubicle surrounding every location in the impedance cube into number of segments. The average values of the most homogenous segment will be assigned as the output at the central locations of the cubicles. The main advantage of this 3D edge preserving smoothing (EPS) algorithm is that it can preserve not only spatial but also vertical edges (e.g. the impedance boundaries). No dip steering is
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Composite Attribute Volumes for Reservoir Characterization and Risk Reduction in the NOCS
Authors E.A.C. Chellingsworth, P.A. Spencer and J. HendersonF037 Composite attribute volumes for reservoir characterization and risk reduction in the NOCS Overview 1 E.A.C. CHELLINGSWORTH 1 P.A. SPENCER 2 J. HENDERSON 1 The utility of volume attributes is determined by the availability and appropriate use of visualisation technologies. Although much useful information can be extracted from single attribute displays or side-by-side comparisons of two or more attributes even more information can be extracted from multi-attribute composite or blended displays. ffA has been working closely with Norsk Hydro to develop techniques for producing composite and RGB blended multi-attribute displays for use in advanced integrated 3D workflows which have applications
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Parameterisation of Pointbars in High-Resolution Seismic Data
Authors I. Rivera Rabelo, S.M. Luthi and L. van VlietF038 PARAMETERISATION OF POINT BARS IN HIGH-RESOLUTION SEISMIC DATA Introduction 1 We developed a simple method to parameterise fluvial point bars which are common sedimentary deposits in meandering river environments. The method needs four points defining the point bar and is based on high-resolution seismic data. A model geometry is compared with the real point bar geometry. We optimise the model parameters by minimizing the error in the area covered by both objects. The method was applied to real seismic data from an oil reservoir in South America. Two circles model I. RIVERA RABELO¹ S.M. LUTHI¹ L.J. VAN VLIET² ¹Department
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Volume Interpretation of a Turbidite System, Los Molles Fm, Neuquén Basin, Argentina
Authors M. Suarez, H. Verzi and M.F. RaggioF039 Volume Interpretation of a Turbidite System Los Molles Fm Neuquén Basin Argentina. Summary 1 Turbidites systems in the Southern portion of the Neuquén basin were analyzed using volume seismic interpretation techniques.This paper tries to reflect the interpretation work done on a 3D post-stack seismic volume regarding the GVI (Geovolume Visualization and Interpretation) premises integrated by: recognition color motion and isolation. (Sheffield et al. June 1999 Leading Edge; Sheffield et al. May 2000 Leading Edge). Introduction Volume interpretation in a 3D environment has been key to the recognition of turbidites systems of Pliensbachian-Toarcian age located in the Neuquén Basin West-Central
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Coherency Processing as a High Resolution Tool for Seismic and Sub-Seismic Deformation Analysis in Sedimentary Basins
Authors H. Trappe, H. Endres, R. Samiee, T. Lohr, C.M. Krawczyk, D.C. Tanner, O. Oncken and P.A. KuklaZ-99 Coherency processing as a high resolution tool for seismic and sub-seismic deformation analysis in sedimentary basins F040 Abstract 1 H. ENDRES 1 3 R. SAMIEE 1 T. LOHR 2 C. M. KRAWCZYK 2 D. C. TANNER 3 H. TRAPPE 1 O. ONCKEN 2 A case study underlining the role of coherency processing in comprehensive basin studies is presented for the North German Basin. The analysis of seismic and sub-seismic deformation in this basin requires a very detailed fault detection in order to bridge the information gap between seismic data and well data. In order to increase the fault resolution
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