RC 2.7. Main Menu. SEG/Houston 2005 Annual Meeting 1355
|
|
- Aileen Chapman
- 5 years ago
- Views:
Transcription
1 Thierry Coléou, Fabien Allo and Raphaël Bornard, CGG; Jeff Hamman and Don Caldwell, Marathon Oil Summary We present a seismic inversion method driven by a petroelastic model, providing fine-scale geological models, in depth, fully compatible with pre-stack seismic measurements. Introduction As part of a two years collaborative R&D project between CGG and Marathon Oil, we have developed a petrophysical seismic inversion workflow to generate fine-scale geomodels that are fully consistent with observed seismic data; the geomodels are not simply conditioned to seismic attributes by seismic-guided mapping but reproduce prestack seismic measurements (Bornard et al., 2005). A key component of the inversion methodology is a Petro-Elastic Model (PEM) that links the reservoir properties stored in the geomodel (e.g., porosity, rock types and fluid saturations) to the elastic response. The new technique is illustrated using a direct porosity inversion case study involving a large North Sea reservoir. : methodology Unlike traditional seismic inversion techniques that solve for elastic properties in time, the Petrophysical Seismic Inversion operates on rock properties in depth. Figure 1: workflow. The workflow for is illustrated in Figure 1. We start from an initial fine-scale geomodel defined from a 3-D stratigraphic grid in depth (left). The PEM is applied to calculate elastic properties in each cell of the geomodel from stored values of porosity, rock type and saturations (middle). Angle-dependent reflectivity series are calculated from the elastic properties through the Zoeppritz equation at each trace location. The reflection coefficient series are then converted from depth to time using the velocities stored in the geomodel. Angledependent 3-D synthetics are finally generated by wavelet convolution (top-right in Figure 1). Perturbations of the properties of the geomodel are introduced using a simulated annealing algorithm to optimise the degree of match between the synthetic and the real angle stacks. After convergence, the final geomodel honours the observed seismic amplitudes, is consistent with the user-specified PEM and integrates inversion-based velocities that ensure coherence between the depth and time domains. It should be noted that changes in the initial model such as the smallscale distribution of rock type, or the modification of the PEM will lead to different solutions. The final models then represent alternative solutions consistent with the seismic data. Post and pre-stack inversion: the value of information Post-stack inversion provides acoustic impedance information I P, often assuming zero-offset reflectivity. One seismic measurement is de-convolved into one localized attribute (I P ) more suitable for reservoir characterisation. It is then transformed into petrophysical variables of interest through statistical or empirical, implicit or explicit, relationships (Doyen, 1988). Data integration techniques such as co-kriging or neural networks are used to drive the interpolation away from well control. However, when the same seismic attribute, I P, is used to predict porosity, netto-gross ratio, fluid type and even permeability, we can question the ability of a single measurement to accurately predict such a multiplicity of variables. It should also be stressed that using several attributes derived from the same original measurement does not provide additional information and that the multiplicity of attributes increases the risk of spurious statistical relationship (Kalkomey, 1997). Working pre-stack or with partial angle stacks introduces more than one seismic measurement and therefore provides an additional degree of freedom for reservoir property prediction. We can expect to access more than one petrophysical parameter in a meaningful manner. Traditional pre-stack inversion provides either compressional and shear impedances (I P and I S ) or the triplet V P, V S and density ( ). The last three variables are not independent as they are the elastic expression of various petrophysical variables, for example, porosity, sorting, fluid type and saturations. First attempts to invert for more than two variables from pre-stack data incorporated very tight constraints for example a priori V P /V S or the use of Gardner s equation (Gardner et al., 1974) to link V P and. However, these relations do not SEG/Houston 2005 Annual Meeting 1355
2 properly describe the changes that occur when the reservoir is shaling out or when fluids are substituted. Role of the petro-elastic model during inversion Elastic behaviour of the reservoir rock can be predicted through forward modelling using a petro-elastic model. Seismic inversion methods derive V P, V S and values that reproduce reflectivity observed at various angles through the Zoeppritz equation or one of its approximations and a 1-D convolution. Solutions of the ill-constrained inverse problem are not necessarily compatible with the a priori knowledge given by the elastic response of the rock types within the reservoir. A petro-elastic model is sometimes used for inversion quality control or transformation of the inversion results through lithology classification (Ødegaard and Avseth, 2004). Inversion results at seismic scale can also be downscaled to reservoir properties in a second inversion step through a petro-elastic model; this is the concept of inversion of the inversion (Caldwell and Hamman, 2004). In the petrophysical seismic inversion, we use the petro-elastic model during the inversion process. Porosity, saturation or facies values of the cells within the geomodel are optimised so that their combined elastic response reproduces the observed seismic as shown in Figure 2. This prediction ability from a small number of variables illustrates the relatively low dimensionality of the problem. The use of the petro-elastic model establishes the necessary link between V P, V S and. This link is more complex than the implicit linear relationship obtained by co-kriging, more stable than a statistical fit when data are sparse or biased and has physical meaning. Figure 2: Well calibration. Comparison between measured (black) and predicted (green) V P, V S and and, on the right, between synthetic seismic (blue) and real traces surrounding the well (grey) for three angles. Scale of the inversion Working at the geological scale, which is a scale fine enough to represent the significant heterogeneities of the reservoir, we ensure that the geomodel is consistent with the seismic data while preserving the known rock types and their elastic relationships. A simple case with a binary mix of alternating thin sand and shale layers cannot be resolved by the band-limited seismic data alone. A priori geological knowledge expects a bi-valued acoustic impedance distribution (one value for shale and one for sand) while post-stack inversion in the seismic bandwidth provides a continuous distribution corresponding to the different aggregates of rock types. In this simple binary case, the petrophysical inversion will provide the expected bi-valued acoustic impedance distribution. In our stratigraphic framework, the finest scale, V3 in Figure 3, is the target scale and is defined by the geologic layering of the initial model with a typical layer thickness of one meter or less. It is the scale at which the petro-elastic models are considered valid. The intermediate V2 scale is the scale at which acoustic or elastic inversions are commonly performed. A layer at that intermediate scale corresponds to a pile of consecutive fine-scale layers with geological significance, typically within two sequence boundaries or maximum flooding surfaces. The order of magnitude for this seismic scale is about ten meters. The coarsest scale, V1 in Figure 3, is defined by macrohorizons, such as the interpreted seismic events, which are calibrated to well markers and give the structural framework of the geomodel. These three vertical scales provide nested partitions of the subsurface in such a way that a fine-scale layer belongs to a single layer at coarser scale. Why use a layered model? They are several reasons why we use a layered model during the inversion instead of the regular time sampling of the seismic data. First, the stratigraphy is better modelled, both for geological description and flow unit definition, as relatively homogeneous layers with property contrasts between layers. Also, seismic amplitude, despite being regularly sampled in time, is better modelled with accurate positioning of important contrasts beyond the seismic sample. This is observed when we consider seismic event interpretation, interval attribute computation and seismic facies analysis (Coléou et al., 2003). Another reason is that the earth is not graduated in TWT and inversion results need to be converted to depth. In depth, as well as TWT, the stratigraphic layering system is preserved. This is true irrespective of the data acquisition domain, PP or PS time. Furthermore, a layered model enables accounting for small position adjustments, often much smaller than a seismic sample, in the different seismic cubes to compensate for residual NMO or to model time shifts and eventually compaction-induced depth shifts between 4D vintages. SEG/Houston 2005 Annual Meeting 1356
3 Inversion in TWT or Depth domain? The also addresses the seismic time-to-depth conversion challenge. Traditionally, seismic inversion results are depth-converted prior to integration with the geomodel and inconsistencies often exist between the various manipulated velocities. These velocities are generated at different scales, which does not facilitate their comparison and reconciliation. We have horizon-based velocities used for depthing at large scale (V1), inversion-derived velocities at seismic resolution scale (V2) and velocities coming from the forward petroelastic modelling of the geological information at small scale (V3). By incorporating time-to-depth conversion as part of the inversion, consistency between the time depth relationships and the velocities stored in each of the cells of the geomodel is maintained throughout the entire inversion process. This is achieved using a multi-scale, multi-axis stratigraphic grid system as illustrated in Figure 3. V1 V2 V3 ~100m ~10m ~1m Figure 3: Velocity section at different scales inside the same geomodel. computer architectures, working with a large number of angle stacks for pre-conditioning and inversion is no longer a problem, even for extremely large models. S SS R FS Figure 4: composite sections of 6 seismic gathers from 6 angle stacks: raw seismic (S), Zoeppritz-compliant synthetic seismic (SS), residuals (R) and geostatistical filtered seismic (FS). Application to a North Sea field The has been applied to porosity inversion on a large North-Sea reservoir composed of deep-water deposited sandstones. Six seismic angle stacks were used during the inversion of the fine-scale geomodel derived from an exploration well. Residual analysis Inversion using AVO/AVA information implies the choice of the number of cubes used during the inversion. We can invert the full gathers or limit the number of cubes to as little as two partial stacks, i.e.: nears and fars. There is obviously a trade-off between computational efficiency and our ability to understand and filter the energy within the partial stacks that is not Zoeppritz-compliant. Unlike with post-stack inversion where small residuals are considered a must, residuals in pre-stack inversion are quite often significant. We believe that working with a larger number of seismic cubes, with more redundancy of the data, provides a better way to filter seismic energy that is considered as noise such as multiples or residual NMO. This energy is somewhat coloured, with spatial, temporal and offset dependencies and therefore not efficiently filtered by the brute stacking process. Pre-stack geostatistical filtering (Hoeber et al., 2003) operating in 4 dimensions (Inline, Crossline, Time and Offset or Angle) proved to have a significant impact on the inversion results (Freudenreich et al., 2004). It is proving quite efficient at reducing the dipping energy in the gathers prior to inversion as seen in the composite sections of seismic gathers in Figure 4. With the use of massively parallel Figure 5: Inverted porosities are displayed on layers and vertical sections, intersecting at a well location, extracted from the finescale geomodel, with higher porosity values in red. The oilsaturated sands are displayed in green and two seismic sections from the near cube are displayed on the edges. SEG/Houston 2005 Annual Meeting 1357
4 The inversion revealed spatial variations in the porosity hidden in the amplitude volumes by the strong AVO response to the hydrocarbon content. Conclusions A petro-elastic model is the link between rock properties and seismic data and should be at the core of seismic calibration. Through the, the fine-scale geomodel is reconciled with the seismic data, not by simply guiding the interpolation in between wells, but by guaranteeing the reproduction of the seismic amplitude for all angles after forward modelling. This is a particularly interesting feature for further developments towards quantitative time-lapse simultaneous inversion. The model response is directly optimised for reservoir property changes, in depth and at the scale of the flow units, the natural variables and domain to express the production-induced constraints. Such constraints are necessary to control the simultaneous inversion of different seismic vintages. They do not come from wave equation as in the case of simultaneous pre-stack inversion where Zoeppritz equation dictates the behaviour of reflectivity across angles. The constraints across the acquisition times come from the knowledge of the production-induced changes in the reservoir, usually expressed in terms of saturation and pressure changes and translated into elastic property constraints ( V P, V S and ) through a petroelastic model. Aknowledgements The authors would like to thank Marathon Oil Company and Compagnie Générale de Géophysique for the support and permission to publish this work and coworkers of both companies for valuable input. References Bornard R., Allo F., Coléou T., Freudenreich Y., Caldwell D.H. and Hamman J.G.: to determine more accurate and precise reservoir properties, SPE 94144, SPE Europec, Madrid, June Caldwell D.H. and Hamman J.G.: IOI A method for fine-scale, quantitative description of reservoir properties from seismic, paper B027 EAGE 66 th Conference and Exhibition, Paris, 7-10 June Coléou T., Poupon M. and Azbel K.: Unsupervised seismic facies classification: A review and comparison of techniques and implementation, The Leading Edge, Vol. 22, No. 10, pp , October Doyen P.M.: Porosity from seismic data: A geostatistical approach, Geophysics, Vol. 53, No. 10, pp , October Freudenreich, Y., Reiser, C. and Helgesen, J.: Preconditioning workflow for optimised reservoir characterisation by stratigraphic inversion, Petex 2004 Conference, London, November Gardner G., Gardner L. and Gregory A.: Formation velocity and density The diagnostic basis for stratigraphic traps, Geophysics, Vol. 39, No. 6, pp , December Hoeber, H., Coléou, T., LeMeur, D., Angerer, E., Lanfranchi P. and Lecerf, D.: On the use of geostatistical filtering techniques in seismic processing, SEG 73 rd Ann. Intern. Mtg., Dallas, October Kalkomey C.T.: Potential risks when using seismic attributes as predictors of reservoir properties, The Leading Edge, Vol. 16, No. 3, pp , March Ødegaard E. and Avseth P.: Well log and seismic data analysis using rock physics templates, First Break, Vol. 23, pp , October SEG/Houston 2005 Annual Meeting 1358
5 EDITED REFERENCES Note: This reference list is a copy-edited version of the reference list submitted by the author. Reference lists for the 2005 SEG Technical Program Expanded Abstracts have been copy edited so that references provided with the online metadata for each paper will achieve a high degree of linking to cited sources that appear on the Web. REFERENCES Bornard, R., F. Allo, T. Coléou, Y. Freudenreich, D. H. Caldwell, and J. G. Hamman, 2005, to determine more accurate and precise reservoir properties: SPE Caldwell, D. H., and J. G. Hamman, 2004, IOI A method for fine-scale, quantitative description of reservoir properties from seismic: 66th Annual Conference, EAGE, Extended Abstracts, B027. Coléou, T., M. Poupon, and K. Azbel, Unsupervised seismic facies classification: A review and comparison of techniques and implementation: The Leading Edge, 22, Doyen, P. M., 1988, Porosity from seismic data: A geostatistical approach: Geophysics, 53, Freudenreich, Y., C. Reiser, and J. Helgesen, 2004, Preconditioning workflow for optimised reservoir characterisation by stratigraphic inversion: Petex 2004 Conference. Gardner, G., L. Gardner, and A. Gregory, 1974, Formation velocity and density The diagnostic basis for stratigraphic traps: Geophysics, 39, Hoeber, H., T. Coléou, D. LeMeur, E. Angerer, P. Lanfranchi, and D. Lecerf, 2003, On the use of geostatistical filtering techniques in seismic processing: 73rd Annual International Meeting, SEG, Expanded Abstracts, Kalkomey, C. T., 1997, Potential risks when using seismic attributes as predictors of reservoir properties: The Leading Edge, 16, Ødegaard, E., and P. Avseth, 2004, Well log and seismic data analysis using rock physics templates: First Break, 23,
A021 Petrophysical Seismic Inversion for Porosity and 4D Calibration on the Troll Field
A021 Petrophysical Seismic Inversion for Porosity and 4D Calibration on the Troll Field T. Coleou* (CGG), A.J. van Wijngaarden (Hydro), A. Norenes Haaland (Hydro), P. Moliere (Hydro), R. Ona (Hydro) &
More informationC002 Petrophysical Seismic Inversion over an Offshore Carbonate Field
C002 Petrophysical Seismic Inversion over an Offshore Carbonate Field T. Coleou* (CGGVeritas), F. Allo (CGGVeritas), O. Colnard (CGGVeritas), I. Machecler (CGGVeritas), L. Dillon (Petrobras), G. Schwedersky
More informationF003 Geomodel Update Using 4-D Petrophysical Seismic Inversion on the Troll West Field
F003 Geomodel Update Using 4-D Petrophysical Seismic Inversion on the Troll West Field K. Gjerding* (Statoil), N. Skjei (Statoil), A. Norenes Haaland (Statoil), I. Machecler (CGGVeritas Services) & T.
More information23855 Rock Physics Constraints on Seismic Inversion
23855 Rock Physics Constraints on Seismic Inversion M. Sams* (Ikon Science Ltd) & D. Saussus (Ikon Science) SUMMARY Seismic data are bandlimited, offset limited and noisy. Consequently interpretation of
More informationSEISMIC PROFILE CGG SEISMIC INVERSIONS. by Lucia Levato, CGG. three offshore case studies show how one size does not fi t all. 18 seismic profile
4D SEISMIC INVERSIONS by Lucia Levato, CGG three offshore case studies show how one size does not fi t all 18 seismic profile The following three cases of offshore 4D seismic inversions illustrate how
More informationReservoir connectivity uncertainty from stochastic seismic inversion Rémi Moyen* and Philippe M. Doyen (CGGVeritas)
Rémi Moyen* and Philippe M. Doyen (CGGVeritas) Summary Static reservoir connectivity analysis is sometimes based on 3D facies or geobody models defined by combining well data and inverted seismic impedances.
More informationBertrand Six, Olivier Colnard, Jean-Philippe Coulon and Yasmine Aziez CGGVeritas Frédéric Cailly, Total
4-D Seismic Inversion: A Case Study Offshore Congo Bertrand Six, Olivier Colnard, Jean-Philippe Coulon and Yasmine Aziez CGGVeritas Frédéric Cailly, Total Summary The first 4D seismic survey in Congo was
More information3D geologic modelling of channellized reservoirs: applications in seismic attribute facies classification
first break volume 23, December 2005 technology feature 3D geologic modelling of channellized reservoirs: applications in seismic attribute facies classification Renjun Wen, * president and CEO, Geomodeling
More informationDownloaded 09/09/15 to Redistribution subject to SEG license or copyright; see Terms of Use at
Reservoir properties estimation from marine broadband seismic without a-priori well information: A powerful de-risking workflow Cyrille Reiser*, Matt Whaley and Tim Bird, PGS Reservoir Limited Summary
More informationPorosity. Downloaded 09/22/16 to Redistribution subject to SEG license or copyright; see Terms of Use at
Geostatistical Reservoir Characterization of Deepwater Channel, Offshore Malaysia Trisakti Kurniawan* and Jahan Zeb, Petronas Carigali Sdn Bhd, Jimmy Ting and Lee Chung Shen, CGG Summary A quantitative
More informationA E. SEG/San Antonio 2007 Annual Meeting. exp. a V. a V. Summary
Time-lapse simulator-to-seismic study - Forties field, North Sea. Christophe Ribeiro *, Cyrille Reiser, Philippe Doyen, CGGeritas, London, UK August Lau, Apache Corp., Houston, US, Steve Adiletta, Apache
More informationTHE USE OF SEISMIC ATTRIBUTES AND SPECTRAL DECOMPOSITION TO SUPPORT THE DRILLING PLAN OF THE URACOA-BOMBAL FIELDS
THE USE OF SEISMIC ATTRIBUTES AND SPECTRAL DECOMPOSITION TO SUPPORT THE DRILLING PLAN OF THE URACOA-BOMBAL FIELDS Cuesta, Julián* 1, Pérez, Richard 1 ; Hernández, Freddy 1 ; Carrasquel, Williams 1 ; Cabrera,
More informationDownloaded 10/02/18 to Redistribution subject to SEG license or copyright; see Terms of Use at
Multi-scenario, multi-realization seismic inversion for probabilistic seismic reservoir characterization Kester Waters* and Michael Kemper, Ikon Science Ltd. Summary We propose a two tiered inversion strategy
More informationUpdating the low-frequency model in time-lapse seismic inversion: A case study from a heavy-oil steam-injection project
Updating the low-frequency model in time-lapse seismic inversion: A case study from a heavy-oil steam-injection project Peter R. Mesdag 1, M. Reza Saberi 1, and Cheran Mangat 2 Abstract A workflow to update
More informationDownloaded 09/16/16 to Redistribution subject to SEG license or copyright; see Terms of Use at
Data Using a Facies Based Bayesian Seismic Inversion, Forties Field, UKCS Kester Waters* (Ikon Science Ltd), Ana Somoza (Ikon Science Ltd), Grant Byerley (Apache Corp), Phil Rose (Apache UK) Summary The
More informationInterpretation and Reservoir Properties Estimation Using Dual-Sensor Streamer Seismic Without the Use of Well
Interpretation and Reservoir Properties Estimation Using Dual-Sensor Streamer Seismic Without the Use of Well C. Reiser (Petroleum Geo-Services), T. Bird* (Petroleum Geo-Services) & M. Whaley (Petroleum
More informationMultiple horizons mapping: A better approach for maximizing the value of seismic data
Multiple horizons mapping: A better approach for maximizing the value of seismic data Das Ujjal Kumar *, SG(S) ONGC Ltd., New Delhi, Deputed in Ministry of Petroleum and Natural Gas, Govt. of India Email:
More informationComparative Study of AVO attributes for Reservoir Facies Discrimination and Porosity Prediction
5th Conference & Exposition on Petroleum Geophysics, Hyderabad-004, India PP 498-50 Comparative Study of AVO attributes for Reservoir Facies Discrimination and Porosity Prediction Y. Hanumantha Rao & A.K.
More informationQUANTITATIVE INTERPRETATION
QUANTITATIVE INTERPRETATION THE AIM OF QUANTITATIVE INTERPRETATION (QI) IS, THROUGH THE USE OF AMPLITUDE ANALYSIS, TO PREDICT LITHOLOGY AND FLUID CONTENT AWAY FROM THE WELL BORE This process should make
More informationHampsonRussell. A comprehensive suite of reservoir characterization tools. cgg.com/geosoftware
HampsonRussell A comprehensive suite of reservoir characterization tools cgg.com/geosoftware HampsonRussell Software World-class geophysical interpretation HampsonRussell Software is a comprehensive suite
More informationA Petroleum Geologist's Guide to Seismic Reflection
A Petroleum Geologist's Guide to Seismic Reflection William Ashcroft WILEY-BLACKWELL A John Wiley & Sons, Ltd., Publication Contents Preface Acknowledgements xi xiii Part I Basic topics and 2D interpretation
More informationThe SPE Foundation through member donations and a contribution from Offshore Europe
Primary funding is provided by The SPE Foundation through member donations and a contribution from Offshore Europe The Society is grateful to those companies that allow their professionals to serve as
More informationIntegrating rock physics and full elastic modeling for reservoir characterization Mosab Nasser and John B. Sinton*, Maersk Oil Houston Inc.
Integrating rock physics and full elastic modeling for reservoir characterization Mosab Nasser and John B. Sinton*, Maersk Oil Houston Inc. Summary Rock physics establishes the link between reservoir properties,
More informationFifteenth International Congress of the Brazilian Geophysical Society. Copyright 2017, SBGf - Sociedade Brasileira de Geofísica
Geostatistical Reservoir Characterization in Barracuda Field, Campos Basin: A case study Frank Pereira (CGG)*, Ted Holden (CGG), Mohammed Ibrahim (CGG) and Eduardo Porto (CGG). Copyright 2017, SBGf - Sociedade
More informationEstimation of density from seismic data without long offsets a novel approach.
Estimation of density from seismic data without long offsets a novel approach. Ritesh Kumar Sharma* and Satinder Chopra Arcis seismic solutions, TGS, Calgary Summary Estimation of density plays an important
More informationStochastic vs Deterministic Pre-stack Inversion Methods. Brian Russell
Stochastic vs Deterministic Pre-stack Inversion Methods Brian Russell Introduction Seismic reservoir analysis techniques utilize the fact that seismic amplitudes contain information about the geological
More informationThe reason why acoustic and shear impedances inverted
SPECIAL The Rocky SECTION: Mountain The Rocky region Mountain region Comparison of shear impedances inverted from stacked PS and SS data: Example from Rulison Field, Colorado ELDAR GULIYEV, Occidental
More informationShaly Sand Rock Physics Analysis and Seismic Inversion Implication
Shaly Sand Rock Physics Analysis and Seismic Inversion Implication Adi Widyantoro (IkonScience), Matthew Saul (IkonScience/UWA) Rock physics analysis of reservoir elastic properties often assumes homogeneity
More informationSEISMIC INVERSION OVERVIEW
DHI CONSORTIUM SEISMIC INVERSION OVERVIEW Rocky Roden September 2011 NOTE: Terminology for inversion varies, depending on the different contractors and service providers, emphasis on certain approaches,
More information2011 SEG SEG San Antonio 2011 Annual Meeting 771. Summary. Method
Geological Parameters Effecting Controlled-Source Electromagnetic Feasibility: A North Sea Sand Reservoir Example Michelle Ellis and Robert Keirstead, RSI Summary Seismic and electromagnetic data measure
More informationThe elastic properties such as velocity, density, impedance,
SPECIAL SECTION: Rr ock Physics physics Lithology and fluid differentiation using rock physics template XIN-GANG CHI AND DE-HUA HAN, University of Houston The elastic properties such as velocity, density,
More informationNew Frontier Advanced Multiclient Data Offshore Uruguay. Advanced data interpretation to empower your decision making in the upcoming bid round
New Frontier Advanced Multiclient Data Offshore Uruguay Advanced data interpretation to empower your decision making in the upcoming bid round Multiclient data interpretation provides key deliverables
More informationEstimating vertical and horizontal resistivity of the overburden and the reservoir for the Alvheim Boa field. Folke Engelmark* and Johan Mattsson, PGS
Estimating vertical and horizontal resistivity of the overburden and the reservoir for the Alvheim Boa field. Folke Engelmark* and Johan Mattsson, PGS Summary Towed streamer EM data was acquired in October
More informationReservoir properties inversion from AVO attributes
Reservoir properties inversion from AVO attributes Xin-gang Chi* and De-hua Han, University of Houston Summary A new rock physics model based inversion method is put forward where the shaly-sand mixture
More informationTh LHR2 08 Towards an Effective Petroelastic Model for Simulator to Seismic Studies
Th LHR2 08 Towards an Effective Petroelastic Model for Simulator to Seismic Studies A. Briceno* (Heriot-Watt University), C. MacBeth (Heriot-Watt University) & M.D. Mangriotis (Heriot-Watt University)
More informationKeywords. PMR, Reservoir Characterization, EEI, LR
Enhancing the Reservoir Characterization Experience through Post Migration Reprocessed (PMR) Data A case study Indrajit Das*, Ashish Kumar Singh, Shakuntala Mangal, Reliance Industries Limited, Mumbai
More informationThe Marrying of Petrophysics with Geophysics Results in a Powerful Tool for Independents Roger A. Young, eseis, Inc.
The Marrying of Petrophysics with Geophysics Results in a Powerful Tool for Independents Roger A. Young, eseis, Inc. While the application of new geophysical and petrophysical technology separately can
More informationA seismic reservoir characterization and porosity estimation workflow to support geological model update: pre-salt reservoir case study, Brazil
A seismic reservoir characterization and porosity estimation workflow to support geological model update: pre-salt reservoir case study, Brazil Laryssa Oliveira 1*, Francis Pimentel 2, Manuel Peiro 1,
More informationDownloaded 10/25/16 to Redistribution subject to SEG license or copyright; see Terms of Use at
Facies modeling in unconventional reservoirs using seismic derived facies probabilities Reinaldo J. Michelena*, Omar G. Angola, and Kevin S. Godbey, ireservoir.com, Inc. Summary We present in this paper
More informationOTC OTC PP. Abstract
OTC OTC-19977-PP Using Modern Geophysical Technology to Explore for Bypassed Opportunities in the Gulf of Mexico R.A. Young/eSeis; W.G. Holt, G. Klefstad/ Fairways Offshore Exploration Copyright 2009,
More informationQuantitative Interpretation
Quantitative Interpretation The aim of quantitative interpretation (QI) is, through the use of amplitude analysis, to predict lithology and fluid content away from the well bore. This process should make
More informationOil and Natural Gas Corporation Ltd., VRC(Panvel), WOB, ONGC, Mumbai. 1
P-259 Summary Data for identification of Porosity Behaviour in Oligocene Lime Stone of D18 Area Of Western Offshore, India V.K. Baid*, P.H. Rao, P.S. Basak, Ravi Kant, V. Vairavan 1, K.M. Sundaram 1, ONGC
More informationSimultaneous Inversion of Clastic Zubair Reservoir: Case Study from Sabiriyah Field, North Kuwait
Simultaneous Inversion of Clastic Zubair Reservoir: Case Study from Sabiriyah Field, North Kuwait Osman Khaled, Yousef Al-Zuabi, Hameed Shereef Summary The zone under study is Zubair formation of Cretaceous
More informationRock physics integration of CSEM and seismic data: a case study based on the Luva gas field.
Rock physics integration of CSEM and seismic data: a case study based on the Luva gas field. Peter Harris*, Zhijun Du, Harald H. Soleng, Lucy M. MacGregor, Wiebke Olsen, OHM-Rock Solid Images Summary It
More informationHeriot-Watt University
Heriot-Watt University Heriot-Watt University Research Gateway 4D seismic feasibility study for enhanced oil recovery (EOR) with CO2 injection in a mature North Sea field Amini, Hamed; Alvarez, Erick Raciel;
More informationWe LHR3 06 Detecting Production Effects and By-passed Pay from 3D Seismic Data Using a Facies Based Bayesian Seismic Inversion
We LHR3 06 Detecting Production Effects and By-passed Pay from 3D Seismic Data Using a Facies Based Bayesian Seismic Inversion K.D. Waters* (Ikon Science Ltd), A.V. Somoza (Ikon Science Ltd), G. Byerley
More informationRock Physics and Quantitative Wavelet Estimation. for Seismic Interpretation: Tertiary North Sea. R.W.Simm 1, S.Xu 2 and R.E.
Rock Physics and Quantitative Wavelet Estimation for Seismic Interpretation: Tertiary North Sea R.W.Simm 1, S.Xu 2 and R.E.White 2 1. Enterprise Oil plc, Grand Buildings, Trafalgar Square, London WC2N
More informationDownloaded 11/02/16 to Redistribution subject to SEG license or copyright; see Terms of Use at Summary.
in thin sand reservoirs William Marin* and Paola Vera de Newton, Rock Solid Images, and Mario Di Luca, Pacific Exploración y Producción. Summary Rock Physics Templates (RPTs) are useful tools for well
More informationSensitivity Analysis of Pre stack Seismic Inversion on Facies Classification using Statistical Rock Physics
Sensitivity Analysis of Pre stack Seismic Inversion on Facies Classification using Statistical Rock Physics Peipei Li 1 and Tapan Mukerji 1,2 1 Department of Energy Resources Engineering 2 Department of
More informationStatistical Rock Physics
Statistical - Introduction Book review 3.1-3.3 Min Sun March. 13, 2009 Outline. What is Statistical. Why we need Statistical. How Statistical works Statistical Rock physics Information theory Statistics
More informationNet-to-gross from Seismic P and S Impedances: Estimation and Uncertainty Analysis using Bayesian Statistics
Net-to-gross from Seismic P and S Impedances: Estimation and Uncertainty Analysis using Bayesian Statistics Summary Madhumita Sengupta*, Ran Bachrach, Niranjan Banik, esterngeco. Net-to-gross (N/G ) is
More informationEarth models for early exploration stages
ANNUAL MEETING MASTER OF PETROLEUM ENGINEERING Earth models for early exploration stages Ângela Pereira PhD student angela.pereira@tecnico.ulisboa.pt 3/May/2016 Instituto Superior Técnico 1 Outline Motivation
More informationURTeC: Summary
URTeC: 2665754 Using Seismic Inversion to Predict Geomechanical Well Behavior: a Case Study From the Permian Basin Simon S. Payne*, Ikon Science; Jeremy Meyer*, Ikon Science Copyright 2017, Unconventional
More informationGeological Classification of Seismic-Inversion Data in the Doba Basin of Chad*
Geological Classification of Seismic-Inversion Data in the Doba Basin of Chad* Carl Reine 1, Chris Szelewski 2, and Chaminda Sandanayake 3 Search and Discovery Article #41899 (2016)** Posted September
More informationOptimizing the reservoir model of delta front sandstone using Seismic to Simulation workflow: A case study in the South China Sea
Optimizing the reservoir model of delta front sandstone using Seismic to Simulation workflow: Lin Li and Bin Tao, CNOOC (China) Panyu Operating Company; Haihong Wang*, Shulin Sun, Fengping Mu, Wanlong
More informationPETROLEUM GEOSCIENCES GEOLOGY OR GEOPHYSICS MAJOR
PETROLEUM GEOSCIENCES GEOLOGY OR GEOPHYSICS MAJOR APPLIED GRADUATE STUDIES Geology Geophysics GEO1 Introduction to the petroleum geosciences GEO2 Seismic methods GEO3 Multi-scale geological analysis GEO4
More informationIntegrating reservoir flow simulation with time-lapse seismic inversion in a heavy oil case study
Integrating reservoir flow simulation with time-lapse seismic inversion in a heavy oil case study Naimeh Riazi*, Larry Lines*, and Brian Russell** Department of Geoscience, University of Calgary **Hampson-Russell
More informationRESERVOIR SEISMIC CHARACTERISATION OF THIN SANDS IN WEST SYBERIA
www.senergyltd.com RESERVOIR SEISMIC CHARACTERISATION OF THIN SANDS IN WEST SYBERIA Erick Alvarez, Jaume Hernandez, Bolkhotivin E.A., Belov A.V., Hakima Ben Meradi,Jonathan Hall, Olivier Siccardi, Phil
More informationNEW GEOLOGIC GRIDS FOR ROBUST GEOSTATISTICAL MODELING OF HYDROCARBON RESERVOIRS
FOR ROBUST GEOSTATISTICAL MODELING OF HYDROCARBON RESERVOIRS EMMANUEL GRINGARTEN, BURC ARPAT, STANISLAS JAYR and JEAN- LAURENT MALLET Paradigm Houston, USA. ABSTRACT Geostatistical modeling of reservoir
More informationA010 MULTISCALE RESERVOIR CHARACTERIZATION USING
1 A010 MULTISCALE RESERVOIR CHARACTERIZATION USING RODUCTION AND TIME LASE SEISMIC DATA Mokhles MEZGHANI, Alexandre FORNEL, Valérie LANGLAIS, Nathalie LUCET IF, 1 & 4 av de Bois réau, 92852 RUEIL-MALMAISON
More informationRC 1.3. SEG/Houston 2005 Annual Meeting 1307
from seismic AVO Xin-Gong Li,University of Houston and IntSeis Inc, De-Hua Han, and Jiajin Liu, University of Houston Donn McGuire, Anadarko Petroleum Corp Summary A new inversion method is tested to directly
More informationTowards Interactive QI Workflows Laurie Weston Bellman*
Laurie Weston Bellman* Summary Quantitative interpretation (QI) is an analysis approach that is widely applied (Aki and Richards, 1980, Verm and Hilterman, 1995, Avseth et al., 2005, Weston Bellman and
More informationReservoir Characterization using AVO and Seismic Inversion Techniques
P-205 Reservoir Characterization using AVO and Summary *Abhinav Kumar Dubey, IIT Kharagpur Reservoir characterization is one of the most important components of seismic data interpretation. Conventional
More informationSEG/New Orleans 2006 Annual Meeting
Carmen C. Dumitrescu, Sensor Geophysical Ltd., and Fred Mayer*, Devon Canada Corporation Summary This paper provides a case study of a 3D seismic survey in the Leland area of the Deep Basin of Alberta,
More informationA new model for pore pressure prediction Fuyong Yan* and De-hua Han, Rock Physics Lab, University of Houston Keyin Ren, Nanhai West Corporation, CNOOC
A new model for pore pressure prediction Fuyong Yan* and De-hua Han, Rock hysics Lab, University of Houston Keyin Ren, Nanhai West Corporation, CNOOC Summary Eaton s equation is the most popularly used
More informationWe LHR3 04 Realistic Uncertainty Quantification in Geostatistical Seismic Reservoir Characterization
We LHR3 04 Realistic Uncertainty Quantification in Geostatistical Seismic Reservoir Characterization A. Moradi Tehrani* (CGG), A. Stallone (Roma Tre University), R. Bornard (CGG) & S. Boudon (CGG) SUMMARY
More informationA031 Porosity and Shale Volume Estimation for the Ardmore Field Using Extended Elastic Impedance
A31 Porosity and Shale Volume Estimation for the Ardmore Field Using Extended Elastic Impedance A.M. Francis* (Earthworks Environment & Resources Ltd) & G.J. Hicks (Earthworks Environment & Resources Ltd)
More informationDownloaded 09/16/16 to Redistribution subject to SEG license or copyright; see Terms of Use at
Ehsan Zabihi Naeini*, Ikon Science & Russell Exley, Summit Exploration & Production Ltd Summary Quantitative interpretation (QI) is an important part of successful Central North Sea exploration, appraisal
More informationFracture characterization from scattered energy: A case study
Fracture characterization from scattered energy: A case study Samantha Grandi K., Sung Yuh, Mark E. Willis, and M. Nafi Toksöz Earth Resources Laboratory, MIT. Cambridge, MA. Total Exploration & Production.
More informationReducing Uncertainty through Multi-Measurement Integration: from Regional to Reservoir scale
Reducing Uncertainty through Multi-Measurement Integration: from Regional to Reservoir scale Efthimios Tartaras Data Processing & Modeling Manager, Integrated Electromagnetics CoE, Schlumberger Geosolutions
More informationQuantitative Seismic Interpretation An Earth Modeling Perspective
Quantitative Seismic Interpretation An Earth Modeling Perspective Damien Thenin*, RPS, Calgary, AB, Canada TheninD@rpsgroup.com Ron Larson, RPS, Calgary, AB, Canada LarsonR@rpsgroup.com Summary Earth models
More informationSpectral decomposition based inversion: application on Brenda Field, Central North Sea Basin
first break volume 31, October 2013 special topic Spectral decomposition based inversion: application on Brenda Field, Central North Sea Basin Baskoro Arif Kurniawan 1, Ehsan Zabihi Naeini 2* and Dinara
More informationUnconventional reservoir characterization using conventional tools
Ritesh K. Sharma* and Satinder Chopra Arcis Seismic Solutions, TGS, Calgary, Canada Summary Shale resources characterization has gained attention in the last decade or so, after the Mississippian Barnett
More informationDelineating a sandstone reservoir at Pikes Peak, Saskatchewan using 3C seismic data and well logs
Delineating a sandston reservoir at Pikes Peak Delineating a sandstone reservoir at Pikes Peak, Saskatchewan using 3C seismic data and well logs Natalia L. Soubotcheva and Robert R. Stewart ABSTRACT To
More informationCalibration of the petro-elastic model (PEM) for 4D seismic studies in multi-mineral rocks Amini, Hamed; Alvarez, Erick Raciel
Heriot-Watt University Heriot-Watt University Research Gateway Calibration of the petro-elastic model (PEM) for 4D seismic studies in multi-mineral rocks Amini, Hamed; Alvarez, Erick Raciel DOI: 10.3997/2214-4609.20132136
More informationBest practices predicting unconventional reservoir quality
Introduction Best practices predicting unconventional reservoir quality Cristian Malaver, Michel Kemper, and Jorg Herwanger 1 Unconventional reservoirs have proven challenging for quantitative interpretation
More informationLithology prediction and fluid discrimination in Block A6 offshore Myanmar
10 th Biennial International Conference & Exposition P 141 Lithology prediction and fluid discrimination in Block A6 offshore Myanmar Hanumantha Rao. Y *, Loic Michel, Hampson-Russell, Kyaw Myint, Ko Ko,
More informationIntegration of Rock Physics Models in a Geostatistical Seismic Inversion for Reservoir Rock Properties
Integration of Rock Physics Models in a Geostatistical Seismic Inversion for Reservoir Rock Properties Amaro C. 1 Abstract: The main goal of reservoir modeling and characterization is the inference of
More informationRobust one-step (deconvolution + integration) seismic inversion in the frequency domain Ivan Priezzhev* and Aaron Scollard, Schlumberger
Robust one-step (deconvolution + integration) seismic inversion in the frequency domain Ivan Priezzhev and Aaron Scollard, Schlumberger Summary Seismic inversion requires two main operations relative to
More informationUse of Seismic Inversion Attributes In Field Development Planning
IOSR Journal of Applied Geology and Geophysics (IOSR-JAGG) e-issn: 2321 0990, p-issn: 2321 0982.Volume 6, Issue 2 Ver. II (Mar. Apr. 2018), PP 86-92 www.iosrjournals.org Use of Seismic Inversion Attributes
More informationTraining Venue and Dates Ref # Reservoir Geophysics October, 2019 $ 6,500 London
Training Title RESERVOIR GEOPHYSICS Training Duration 5 days Training Venue and Dates Ref # Reservoir Geophysics DE035 5 07 11 October, 2019 $ 6,500 London In any of the 5 star hotels. The exact venue
More informationElements of 3D Seismology Second Edition
Elements of 3D Seismology Second Edition Copyright c 1993-2003 All rights reserved Christopher L. Liner Department of Geosciences University of Tulsa August 14, 2003 For David and Samantha And to the memory
More information3D geostatistical porosity modelling: A case study at the Saint-Flavien CO 2 storage project
3D geostatistical porosity modelling: A case study at the Saint-Flavien CO 2 storage project Maxime Claprood Institut national de la recherche scientifique, Québec, Canada Earth Modelling 2013 October
More informationSeismic characterization of Montney shale formation using Passey s approach
Seismic characterization of Montney shale formation using Passey s approach Ritesh Kumar Sharma*, Satinder Chopra and Amit Kumar Ray Arcis Seismic Solutions, Calgary Summary Seismic characterization of
More informationQuantitative interpretation using inverse rock-physics modeling on AVO data
Quantitative interpretation using inverse rock-physics modeling on AVO data Erling Hugo Jensen 1, Tor Arne Johansen 2, 3, 4, Per Avseth 5, 6, and Kenneth Bredesen 2, 7 Downloaded 08/16/16 to 129.177.32.62.
More informationPorosity prediction using cokriging with multiple secondary datasets
Cokriging with Multiple Attributes Porosity prediction using cokriging with multiple secondary datasets Hong Xu, Jian Sun, Brian Russell, Kris Innanen ABSTRACT The prediction of porosity is essential for
More informationWe apply a rock physics analysis to well log data from the North-East Gulf of Mexico
Rock Physics for Fluid and Porosity Mapping in NE GoM JACK DVORKIN, Stanford University and Rock Solid Images TIM FASNACHT, Anadarko Petroleum Corporation RICHARD UDEN, MAGGIE SMITH, NAUM DERZHI, AND JOEL
More informationToward an Integrated and Realistic Interpretation of Continuous 4D Seismic Data for a CO 2 EOR and Sequestration Project
SPE-183789-MS Toward an Integrated and Realistic Interpretation of Continuous 4D Seismic Data for a CO 2 EOR and Sequestration Project Philippe Nivlet, Robert Smith, Michael A. Jervis, and Andrey Bakulin,
More informationModelling of 4D Seismic Data for the Monitoring of the Steam Chamber Growth during the SAGD Process
Renewable energies Eco-friendly production Innovative transport Eco-efficient processes Sustainable resources Modelling of 4D Seismic Data for the Monitoring of the Steam Chamber Growth during the SAGD
More informationSeismic reservoir characterization in offshore Nile Delta.
Seismic reservoir characterization in offshore Nile Delta. Part II: Probabilistic petrophysical-seismic inversion M. Aleardi 1, F. Ciabarri 2, B. Garcea 2, A. Mazzotti 1 1 Earth Sciences Department, University
More informationAn empirical method for estimation of anisotropic parameters in clastic rocks
An empirical method for estimation of anisotropic parameters in clastic rocks YONGYI LI, Paradigm Geophysical, Calgary, Alberta, Canada Clastic sediments, particularly shale, exhibit transverse isotropic
More informationSEG Houston 2009 International Exposition and Annual Meeting
The role of EM rock physics and seismic data in integrated 3D CSEM data analysis I. Brevik*, StatoilHydro, Pål T. Gabrielsen, Vestfonna and Jan Petter Morten, EMGS Summary An extensive 3D CSEM dataset
More informationTOM 2.6. SEG/Houston 2005 Annual Meeting 2581
Oz Yilmaz* and Jie Zhang, GeoTomo LLC, Houston, Texas; and Yan Shixin, PetroChina, Beijing, China Summary PetroChina conducted a multichannel large-offset 2-D seismic survey in the Yumen Oil Field, Northwest
More informationIntegrating rock physics modeling, prestack inversion and Bayesian classification. Brian Russell
Integrating rock physics modeling, prestack inversion and Bayesian classification Brian Russell Introduction Today, most geoscientists have an array of tools available to perform seismic reservoir characterization.
More informationVertical and horizontal resolution considerations for a joint 3D CSEM and MT inversion
Antony PRICE*, Total E&P and Don WATTS, WesternGeco Electromagnetics Summary To further explore the potential data content and inherent limitations of a detailed 3D Controlled Source ElectroMagnetic and
More informationRock physics and AVO analysis for lithofacies and pore fluid prediction in a North Sea oil field
Rock physics and AVO analysis for lithofacies and pore fluid prediction in a North Sea oil field Downloaded 09/12/14 to 84.215.159.82. Redistribution subject to SEG license or copyright; see Terms of Use
More informationSEG/New Orleans 2006 Annual Meeting
A non-differencing approach to seismic monitoring: Implications for difficult carbonate reservoirs Abdelmoneam E. Raef* and Richard D. Miller, Kansas Geological Survey Summary Application of time-lapse
More informationSeismic Inversion on 3D Data of Bassein Field, India
5th Conference & Exposition on Petroleum Geophysics, Hyderabad-2004, India PP 526-532 Seismic Inversion on 3D Data of Bassein Field, India K.Sridhar, A.A.K.Sundaram, V.B.G.Tilak & Shyam Mohan Institute
More informationTime-lapse seismic monitoring and inversion in a heavy oilfield. By: Naimeh Riazi PhD Student, Geophysics
Time-lapse seismic monitoring and inversion in a heavy oilfield By: Naimeh Riazi PhD Student, Geophysics May 2011 Contents Introduction on time-lapse seismic data Case study Rock-physics Time-Lapse Calibration
More informationIntegration of broadband seismic data into reservoir characterization workflows: A case study from the Campos Basin, Brazil
t Technical papers Integration of broadband seismic data into reservoir characterization workflows: A case study from the Campos Basin, Brazil Ekaterina Kneller 1 and Manuel Peiro 1 Abstract Towed-streamer
More information