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- Volume 28, Issue 2, 2010
First Break - Volume 28, Issue 2, 2010
Volume 28, Issue 2, 2010
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Land cableless systems: use and misuse
By D. MougenotDenis Mougenot of Sercel discusses the emergence of cableless land seismic acquisition systems and compares them with conventional cable architecture concluding that they provide complementary applications depending on terrain and spread configuration.
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Land seismic super-crew unlocks the Ara carbonate play of the Southern Oman Salt Basin with wide azimuth survey
Authors R. Sambell, S. Al-Mahrooqi, C. Matheny, S. Al-Abri and S. Al-YarubiThe Southern Oman Salt Basin 3D seismic survey being acquired by Petroleum Development Oman (PDO) is the largest, most densely populated wide-azimuth (WAZ) land seismic survey yet acquired, benefiting from the use of a land seismic super-crew. PDO geoscientists Robert Sambell, Said Al-Mahrooqi, Christopher Matheny, Said Al-Abri and Said Al-Yarubi describe what was involved in this breakthrough survey.
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Exploration and development of the Tawke oilfield in the Kurdistan region of Iraq
Authors A.O. Harstad, N.A. Bang and T.A. ChalabiAndreas O. Harstad, Nils A. Bang and Tarik A. Chalabi of DNO Iraq tell the story of the first project for many years by an international company in Iraq – a fast track development of an oil and gas field in the Kurdistan region.
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Near surface solutions in South Rub Al-Khali, Saudi Arabia applying seismic-gravity joint inversion and redatuming
Authors D. Colombo, M. Mantovani, M. Sfolciaghi, P. van Mastrigt, A. Al-Dulaijan and T. NafieD. Colombo, M. Mantovani, M. Sfolciaghi, P. van Mastrigt, A. Al-Dulaijan and T. Nafie demonstrate in this Saudi Arabian case study how seismic imaging problems caused by complex near surface conditions can be significantly resolved with the judicious use of gravity data, joint inversion integration schemes and redatuming techniques.
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How advanced processing and interpretation added value to major 3D VSP pilot studies in Abu Dhabi
Authors K. Müller, W.L. Soroka, S. Marmash, M. Al-Baloushi, O. Al Jeelani and B. PaulssonKlaus Müller, William L. Soroka, Samer Marmash, Mariam Al-Baloushi, Omar Al Jeelani and Bjorn Paulsson describe a pilot field study intended to demonstrate the potential advantages over conventional seismic of a 3D VSP for imaging thinner beds, characterizing reservoir properties and better imaging of faults with little significant offset. Among other benefits the method could have implications for future time lapse reservoir monitoring.
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AVO applications for porosity and fluid estimation of carbonate reservoirs offshore Abu Dhabi
Authors T. Ishiyama, H. Ikawa and K. BelaidTomohide Ishiyama, Hidemasa Ikawa and Kamel Belaid of ADMA-OPCO take an offshore example offshore Abu Dhabi to show how AVO techniques and attributes, especially in the domain of λρ and μρ, can be used for reservoir characterization of porosity and fluid estimation for carbonate reservoirs as long as rock physics and appropriate seismic applications are taken into account.
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Comparison of lithology and net pay uncertainty between deterministic and geostatistical inversion workflows
Authors M. Sams and D. SaussusAssessment of the uncertainty associated with net pay estimates can be made from inversion of seismic data, either using deterministic inversion followed by probabilistic interpretation, or directly with geostatistical inversion. The uncertainty from the deterministic workflow is higher than from the geostatistical workflow. The difference in uncertainty increases as the thickness of the reservoir beds decreases. However, the estimates of mean net pay are very similar, suggesting that deterministic inversion followed by a probabilistic interpretation is able to provide reasonable estimates even when the reservoir is seismically thin. The uncertainty in the detailed distribution of lithology and properties in 3D space is also higher in the deterministic workflow. This is because the geostatistical inversion is able to overcome, to some degree, the limited seismic bandwidth by integrating all of the available information, especially the rock physics properties of the different lithologies, simultaneously during the inversion.
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Tutorial: Velocity estimation via ray-based tomography
By I.F. JonesTomographic inversion forms the basis of all contemporary methods of updating velocity models for depth imaging. Over the past 10 years, ray-based tomography has evolved to support production of reasonably reliable images for data from complex environments for models with modest lateral velocity variation scale lengths. In this tutorial, the basics of ray-based tomography are described along with the concepts behind full waveform tomography.
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Volumes & issues
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Volume 42 (2024)
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Volume 41 (2023)
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Volume 40 (2022)
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Volume 39 (2021)
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Volume 38 (2020)
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Volume 37 (2019)
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Volume 36 (2018)
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Volume 35 (2017)
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Volume 34 (2016)
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Volume 33 (2015)
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Volume 32 (2014)
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Volume 31 (2013)
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Volume 30 (2012)
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Volume 29 (2011)
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Volume 28 (2010)
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Volume 27 (2009)
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Volume 26 (2008)
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Volume 25 (2007)
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Volume 24 (2006)
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Volume 23 (2005)
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Volume 22 (2004)
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Volume 21 (2003)
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Volume 20 (2002)
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Volume 19 (2001)
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Volume 18 (2000)
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Volume 17 (1999)
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Volume 16 (1998)
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Volume 15 (1997)
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Volume 14 (1996)
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Volume 13 (1995)
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Volume 12 (1994)
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Volume 11 (1993)
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Volume 10 (1992)
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Volume 9 (1991)
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Volume 8 (1990)
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Volume 7 (1989)
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Volume 6 (1988)
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Volume 5 (1987)
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Volume 4 (1986)
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Volume 3 (1985)
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Volume 2 (1984)
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Volume 1 (1983)