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71st EAGE Conference and Exhibition incorporating SPE EUROPEC 2009
- Conference date: 08 Jun 2009 - 11 Jun 2009
- Location: Amsterdam, Netherlands
- ISBN: 978-90-73781-67-2
- Published: 08 June 2009
551 - 585 of 585 results
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3D Seismic Megasurvey Geomorphology of the Southern North Sea – Tunnel Valley Records and Associated Ice-sheet Dynamics
Authors J. Moreau, M. Huuse, P. L. Gibbard and A. MoscarielloAnalysis of offshore glacial geomorphology is becoming a popular topic since the massive release of industrial seismic data in the North Sea. As well, glaciogenic sediments are involved in several petroleum systems (Permo-Carboniferous, Ordovician rocks).
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Geomorphology Applied to Heterogeneity Distribution in Point-bar Setting, Example from the Fluvio-estuarine McMurray Formation, Canada (Best of AAPG)
Authors R. Labourdette and V. Delhaye-PratThe result of this study is the characterisation and reconstruction of reservoir heterogeneity distribution through time and space. A relationship can therefore be established between the spatial evolution of preserved heterogeneity and depositional proc
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3D Seismic Data Helps to Lift the Fog – Structural and Stratigraphic Architectural Observations of a Cretaceous Carbonate Platform, offshore Qatar, Submitted to Repeated Emersion and Fluvial Incision
Authors A. T. Pink, C. Sembritzky and M. ZahranA recent marine 3D seismic survey over Block 4, Qatar, provides outstanding images of Mid-Upper Cretaceous stratigraphic intervals and allows detailed observations of both structural and stratigraphic architecture including insights into depositional sett
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Seismic Character of Tectonically Controlled Sedimentation in the Upper Cretaceous Chalk, Danish North Sea
Authors S. Back, H. van Gent, L. Reuning and P. A. KuklaClassically, the North-Sea Chalk is assumed to have deposited under quiet, homogeneous pelagic conditions with local redeposition in slumps and slides. However, in recent times the observation of highly discontinuous reflection patterns on 2D and 3D seism
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Seismic Expression of Sedimentary Processes on a Carbonate Shelf and Slope System, Browse Basin, Australia – Part I – Non-tropical Carbonates, Eocene to Lower Miocene
Authors L. Reuning, S. Back, H. Schulz, M. Hirsch, P. Kukla and J. GrötschSeismic data from the western part of the Browse Basin, North West Shelf, Australia, reveal the internal geometry and depositional history of a progradational Eocene-Lower Miocene non-tropical carbonate shelf. The prograding slope system is superbly image
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Seismic Expression of Sedimentary Processes on a Carbonate Shelf and Slope System, Browse Basin, Australia – Part II – Tropical Carbonates
Authors B. Rosleff-Soerensen, L. Reuning, S. Back and P. KuklaThe Browse Basin on the NW-Australian shelf is a sedimentary basin developing from a heterozoan carbonate ramp to a tropical rimmed carbonate platform during the Middle Miocene. The evolution of this tropical carbonate platform is reconstructed from the i
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Seismic Geomorphology of Ancient Submarine Canyon Systems – Implication for Prospectivity of the Niger Delta, Nigeria
Authors V. Delhaye-Prat, K. Ladipo, A. Aigbe, T. Ujowundu, O. Busari and C. SeyveIn the Niger Delta, the seismic dataset now available reveal numerous Miocene incisions in greater detail than before. Using the seismic geomorphology approach, analysis of such incisions highlighted common features characteristic of submarine canyons. T
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Preliminary Overview of the Plio-Pleistocene of South East Nigerian Deep Offshore Stratigraphy and Morphology
Authors E. Braccini and A. UmarZ032 Preliminary Overview of the Plio-Pleistocene of South East Nigerian Deep Offshore Stratigraphy and Morphology E. Braccini* (Total) & A. Umar (NAPIMS) SUMMARY 71 st EAGE Conference & Exhibition — Amsterdam The Netherlands 8 - 11 June 2009Introduction The shallow part of seismic deep offshore of Nigeria (sea bottom to Pliocene) is generally screened to appraise shallow hazards which could appear during drilling or on a geotechnical point of view. From a cup of time thanks to the very good quality of the 3D high resolution seismic these time sections are also studded with a morphological objective and reveals geological
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Invisible Light Imaging and Classification of Subsurface Rocks and Rock Sequences
By G. StoveWhen pulsed electromagnetic radio-waves pass through a material they generate measurable responses in terms of energy, frequency and phase relationships. Following early applications of Atomic Dielectric Resonance (ADR) investigations in medical studies
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An Autonomous Seafloor System for Monitoring Reservoir Deformation
Authors P. J. Hatchell, S. J. Bourne, S. C. Partridge, C. J. Leaf, H. Klemm, S. Kampshoff and A. M. CookA deepwater seafloor geodesy trial is ongoing above the Ormen Lange gas field offshore Norway. This trial is designed to demonstrate the technical and operational feasibility of long-term repeated acoustic ranging measurements within a network of seafloor
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Reservoir Monitoring in Producing Fields with Innovative Geophysical Technology
More LessFor reservoir monitoring, a variety of geophysical instruments can be permanently installed in the borehole and on the surface. These measurements will continuously image reservoir fluid distribution during the life of a field. Properties from conventiona
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Multi-transient EM Repeatability Experiment over Harding Field
Authors A. M. Ziolkowski, R. Parr, D. Wright and V. NocklesWe present results of a multi-transient electromagnetic (EM) repeability experiment conducted over the North Sea Harding field in 2007 and 2008. The segment of the field under investigation had produced 3.9 MMbbls of oil during this time. Processing of t
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A 3D Wide-azimuth Field Test with Simultaneous Marine Sources
Authors W. H. Dragoset, H. Li, L. Cooper, D. Eke, J. Kapoor, I. Moore and C. BeasleyWe acquired a small 3D wide-azimuth (WAZ) survey using simultaneous dithered sources in a geologically complex area that had been previously acquired with a standard WAZ configuration. The simultaneous-source data were processed without application of any
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Subsurface Structure from Ambient Seismic Noise
Authors D. Draganov, X. Campman, J. Thorbecke, A. Verdel and K. WapenaarOne of the applications of seismic interferometry (SI) by cross-correlation is the retrieval of the reflection response of the subsurface from ambient seismic noise recorded at the surface. We apply SI to ambient-noise data recorded in a desert area in No
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Corner Reflectors – A New Concept of Imaging Vertical Boundaries
Authors E. A. Kozlov, Z. Koren, D. N. Tverdohlebov and A. N. BadeikinNear vertical surfaces of sub-seismic faults, steep salt intrusion flanks, and fuzzy boundaries of fracture swarms relate to geologic objects that are difficult to image and characterize by conventional processing of seismic data. To solve the problem, a
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3D First Arrival Traveltime Tomography Algorithm for Very Large Datasets
Authors M. S. Noble, C. Taillandier and P. ThierryWe present a 3 D first arrival traveltime tomography algorithm for the determination of the near surface velocity structure form first break picks. Based on the adjoint state method, the algorithm intrinsic properties make it massively parallelizable and
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A Neuro–Fuzzy Approach for Estimating Shear Wave Velocity Form Porosity Logs – A Case Study from Sarvak Formation, Iran
Authors M. Rajabi, B. Bohloli, S. J. Moosavi and E. Gholampour-AhangarThe shear and compressional wave velocities have important rule in study and evaluation of petroleum reservoirs, wave velocities have many applications, in prtrophysical, geophysical and geomechanical studies. Compressional wave velocity obtain very easil
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Geo-flightseeing – A Virtual Flight and 2D-3D Structural Modeling across the Northen Apennines-Alps Realm
Authors C. Turrini and G. BurridgeUsing the widely-available 3D vision provided by Google Earth is becoming commonplace, but how many of us are using it to its fullest potential? What kind of information is truly useful to the data-voracious geoscientist? What can be displayed and how? An
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Sharing Subsurface Models beneath Out Feet in Living Environments – An Interactive Google Earth Approach
By G. C. SonkeWith the advent of freely available 3D applications such as Google Earth and Virtual Earth it has become possible to place 3D objects within a very detailed geographical context. For both experts and non-experts these applications have become great tools
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Application of Advanced Filtering Techniques to the Analysis of CBL Data
Authors A. O. Bolshakov, J. S. Zhao, E. J. Domangue and V. S. DubinskyRapid technology development and the introduction of new technologies for borehole acoustic measurements over the last several years prompted scientists and engineers for new data acquisition and signal-processing techniques to support these technologies.
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Sub-basalt Imaging of the NE Atlantic Margins Reveals New Frontier Plays
Authors P. Keane, I. Davison and P. NuttallNew deep tow 2D PSDM seismic data is presented which reveals coherent Mesozoic sedimentary strata below the thick Paloegene basalts which cover much of the NE Atlantic margins. Major Cenozoic folds and Mesozoic rotated fault block traps are imaged which a
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Seismic Constrained Gravity Inversion for Sub-basalt Exploration in West Coast, India
Authors R. F. Fainstein, L. Roy, N. Banik, B. Rommel, I. Priezzhev and R. BroetzExploration in sub-basalt reservoirs is challenging because conventional seismic fails to image the structures below basalt. Advanced seismic acquisition using long offsets and low-frequency sources as well as improved processing are the possible way-out
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Subbasalt Seismic Processing Strategy for the GlyVeST Data from the Faroes – A Modeling Study
Authors K. D. Nguyen, R. J. Brown and H. T. NguyenSubbasalt seismic processing commonly faces challenges from severe scattering losses by impedance contrasts and rugose surfaces, geometrical spreading, strong multiples and velocity heterogeneity. As a result, conventional methods fail to reveal enough in
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Multi-azimuth Sub-basalt Imaging in the Tulipan Area
Authors V. Valler, C. Jones, R. Pedersen, D. King, J. K. Fruehn, M. Smith and M. GoodwinImaging in environments where basalts have been emplaced can be difficult. In particular, strong velocity contrasts, coupled with rugose body surfaces and the frequently poor signal to noise ratio make construction of an accurate velocity model a challeng
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A New Fault Clay Prediction Algorithm for Fault Seal Analysis Based on Observed Physical Processes
Authors S. R. Freeman, S. D. Harris, V. S. O‘Connor, R. J. Knipe, P. A. Jones, N. A. McCabe and M. J. WelchFault permeabilities in prospect evaluations and reservoir simulations rely on estimates of fault clay distribution. Accurate prediction of fault clay content is therefore critical for calculating cross-fault transmissibilities. Existing algorithms, eg. S
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Quantifying Time-lapse Effects of Solution Squeeze Mining
Authors G. van Noort, G. G. Drijkoningen, R. J. Arts, J. W. Thorbecke, J. G. Bullen and J. VisserIn the northern part of The Netherlands the magnesium salts carnalite and bischofite are mined in a deep solution mine. For optimal production and also for environmental impact such as subsidence, it is vital to understand the process of salt production.
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3D WAZ Land Acquisition Driving New Processing Developments
3D WAZ acquisition on land has driven innovative processing in Shell, giving benefits through improved near surface model building, noise attenuation, multiple attenuation, and wide azimuth velocity model building and imaging. We demonstrate the new devel
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History of Exploration in the Southern Permian Basin Atlas (SPBA) Area
As part of the Southern Permian Basin Atlas (SPBA)project, exploration and appraisal drilling, seismic acquisition, licensing, fiscal policy, legislation and success rates were examined between the UK, Denmark, Belgium, the Netherlands, Germany and Poland
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An Integral 3D Geo-modeling Helps to Reveal New Exploration Trends – Case Study for the NW Black Sea Basin, Ukraine
An approach of integral geological and geophysical modeling has been applied to study the NW Black Sea basin (Odessa Gulf) and its local hydrocarbon prospects and leads. It was built an integral spatial geo-model that features peculiarities of deep struct
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The Northern Siberia Geology and Hydrocarbon Systems – Project and the First Results
Authors V. Verzhbitsky, A. Khudoley, A. Prokopiev, E. Frantzen, M. Tuchkova, A. Egorov, G. Serkina, D. Vasiliev, M. Rogov, D. Zastrozhnov and A. LiThe northern Siberia occupies a wide area with several sedimentary basins with high hydrocarbon potential. To the north from it there is the Laptev Sea rift basin which is believed to be one of the most promising offshore areas for hydrocarbon discoveries
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The Bonga 4D – Shell Nigeria's First Deepwater Time Lapse Monitor
Authors A. Onuwaje, A. Adejonwo, I. Al-Mandhary, R. Detomo Jr, O. Effiom, W. Gouveia, N. Kremers, E. Legius, A. MacLellan, R. Mcclenaghan, E. Quadt and S. WeaverThe Bonga Main field was discovered by Shell Nigeria E&P (SNEPCO) in 1995 and is located 120 km offshore Nigeria at water depths of 800-1200m. First oil production started in November 2005. Bonga is Nigeria's first deepwater discovery. Oil production at
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Feasibility of Urban Land 4D Time-lapse Seismic Surveys in the Niger Delta – Challenges
Authors R. Dike, N. Osayande, S. Olotu, R. Mbah, I. Suleiman, O. Ugborugbo and F. OsayandeUrbanisation and industrial growth within the Niger Delta has made 3D repeat & 4D time-lapse seismic surveys for reservoir delineation and management hugely challenging, both technically and operationally. Experience from Shell Nigeria’s previous onshore
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A New Look at Seismic Properties of Low Gas-saturated Reservoirs
Authors D. Broseta, P. Khalid, D. V. Nichita, G. Galliéro, N. Favretto-Cristini and J. BlancoIn seismic applications, the bulk modulus of porous rocks saturated with gas and liquid is usually estimated using Gassmann’s model, in which the fluid bulk modulus is Wood’s (or Reuss’) average of the liquid and gas moduli. This average holds if there is
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Gas Hydrate in the Krishna-Godavari Basin, India
Authors P. Jaiswal, P. Dewangan, T. Ramprasad, S. Gullapallis, C. A. Zelt, M. V. Ramana, M. V. Lall, B. J. P. Kumar and A. V. SatheLarge quantities of gas hydrate were discovered while drilling in the Krishna-Godavari (K-G) basin along the Indian east coast in 2006. Drilling also showed significant inhomogenity in hydrate distribution. Using the unified imaging approach of Jaiswal an
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Near Surface Facies Based Global Constrained Near Surface Modeling
Topographical and geological conditions variations cause serious static and imaging problems
to the seismic data processing of the contract area, Block B, West Rub’ Al-Khali Basin.
Although fairly good result was obtained with continuously effort for Near Surface Model
(NSM) updating during the 2D and 3D seismic data processing, limited static correction
accuracy was showed and possible static problems were also observed during later on data
processing and interpretation.
Bunches of near surface modeling methodologies can be adopted for near surface modeling
and each one has its advantages and limitations in terms of adaptability and accuracy. Sorts of
geosciences data are also available in the working area, Block B. By dedicated research and
analysis all possible methodologies and geosciences data, a new term Near Surface Facies
(NSF) was introduced and a new approach called Global Constrained Near Surface Modeling
(GCNSM) was developed for the NSM building based on the NSF analysis. Comparing with
the old NSM, the new model showed better accuracy and more reliable result.
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