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First EAGE Data Processing Workshop
- Conference date: February 26-28, 2024
- Location: Cairo, Egypt
- Published: 26 February 2024
1 - 20 of 40 results
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Advanced Imaging of Hybrid Acquisition Data
More LessAuthors S. Masclet, F. Wang, L. Janot and H. JiangSummaryNot Provided
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Deep Structural Imaging in the Vienna Basin
More LessAuthors A. Mamdouh, K. Pelz, S. Bezdan, E. Angerer, A. Oteleanu, H. Granser, A. Abubakr, A. Sakharov and I. JonesSummaryNot Provided
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Addressing Imaging Challenges in the Nile Delta, Results from Various Multi-Azimuth Towed Streamer Case Studies
More LessAuthors J. Fruehn, M. Romanenko, V. Butterworth and A. CrosbySummaryThe Nile delta poses a series of seismic imaging challenges for hydrocarbon exploration and development, throughout the entire section from the seabed to the deepest Cretaceous events at around 10km depth. In the Post-Messinian there are numerous mud volcanoes, some of which are currently active, others of which are buried beneath more recent deposits. Together with pockets of free gas, the mud-volcanoes lead to a very high degree of lateral variability of rock properties such as seismic velocity and seismic attenuation. The Messinian layer is the most complex unit in the Nile delta. It consists of layers of sands, shale and evaporites, which are highly disrupted by faults and lateral and vertical movement of mobile shale. The thick pre-Messinian sequence contains the majority of the hydrocarbon bearing targets and is generally less complex than the overlying Messinian, but seismic images of it are often detrimentally affected by inaccurate detail added to the upper units during velocity model-building (VMB). Examples are shown of these challenges from various areas of the Nile delta, and ways to address them with the aim of obtaining the best possible seismic image from the current available data.
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A Case Study Solving VMB Overburden Complexities in the Eastern Mediterranean Sea Using FWI and RTM
More LessAuthors T. Darwish, J. Kumar, M. Ahmed, M. Georgy and M. AhmedSummaryImproving imaging beneath Messinian salt layers has garnered a lot of attention, especially due to recent pre-Messinian gas discoveries in the Eastern Mediterranean Sea, which has proven promising hydrocarbon potential in the region. The primary challenges of imaging the pre-Messinian targets are related to enhancing the overburden velocity resolution, including Messinian layer which is very heterogeneous in this region. Advanced technology like Full Waveform Inversion (FWI) and Reverse Time Migration (RTM) can help in developing an optimized velocity model building (VMB) workflow. In this paper, one such VMB workflow has been proposed demonstrating different overburden solutions to improve the pre-Messinian Image. The proposed workflow has been implemented on recently acquired data from some of the blocks in the Eastern Mediterranean region.
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An Automated Framework for Coherent Noise Suppression
More LessAuthors R. Bachrach, S. Re, M. Clementi and C. WilsonSummaryNot Provided
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Integrated Workflow for Ccs Site Evaluation and Near Field Exploration: a UK Southern North Sea Study
More LessAuthors C. Reiser, D. Rumyantsev, E. Mueller and N. PerninSummaryOil companies face many challenges in mature basins such as the UK Southern North Sea (UK-SNS) while seeking to optimize their exploration and production efforts along with growing environmental regulations and commitments to reduce carbon emissions. Utilizing rejuvenated regional 3D seismic data libraries provides a cost-effective and scalable data source fit for both near field exploration and Carbon Capture and Storage (CCS) projects. This study aims to address these challenges by utilizing multi-survey vintages reprocessing and modern geosciences techniques to enhance seismic imaging quality from shallow to deep, unlock new hydrocarbon prospects, improve interpretation and assist evaluating CCS site(s) and reservoir development potential. High quality seismic data are an essential foundation for these energy projects. 26 Legacy seismic data sets (acquired between 1988 – 2006) have been reprocessed and are being delivered by the time of this workshop.
To complement this effort a complete regional interpretation and seismic reservoir characterisation (including regional rock physics, seismic inversion and reservoir properties transform) have been performed representing a regional screening product of around 12 000 sqkm available for CCS site selection, characterization and near-field exploration. This case study will demonstrate that an integrated geoscience approach can have a dual benefit for the energy security and transition challenges we are facing today.
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