Time series are analysed to detect changes and predict future behaviour. Monitoring of the surface or subsurface in Geoscience provides such time series. As new data becomes available, changes of regime are detected. They should be identified as early as possible with as few ...
Technical Content
Correcting Fault Shadows – a Case Study Comparison of Fault-Constrained Tomography and Time-Lag Full-Waveform Inversion
Correcting Fault Shadows – a Case Study Comparison of Fault-Constrained Tomography and Time-Lag Full-Waveform Inversion
Solving fault shadow imaging problems has been a long-existing topic when heavy faults are present and the seismic imaging underneath is distorted. With full-waveform inversion (FWI), they are usually less of a concern when their depths are within diving wave penetration. However, beyond diving ...
Gippsland Basin, Australia: New data provides compelling insights in unexplored areas
Gippsland Basin, Australia: New data provides compelling insights in unexplored areas
CGG has undertaken a multi-phase, multi-year data enhancement and acquisition project, commencing with a major basin-scale reprocessing initiative (ReGeneration) and culminating in the completion of a new 3D acquisition and imaging project, completed in 2021. The new survey has provided expanded data coverage from ...
Angolan Kwanza Basin - Expanding Proven Opportunities
Angolan Kwanza Basin - Expanding Proven Opportunities
Seismic imaging in the Kwanza Basin has historically proven to be challenging owing to its complex geology and the presence of deep pre-salt targets. CGG has recently re-imaged its Kwanza Basin multi-client data portfolio to benefit from new insights made possible by advanced proprietary ...
Unlocking the properties of a pre-salt carbonate reservoir offshore Brazil with facies-constrained geostatistical inversion
Unlocking the properties of a pre-salt carbonate reservoir offshore Brazil with facies-constrained geostatistical inversion
A continuing concern regarding presalt carbonate reservoirs offshore Brazil is how to derive accurate quantitative estimates of reservoir properties. It is challenging to understand the link between the facies model and the variation in elastic properties, recover a reliable model of elastic properties from ...
Wave-equation deconvolution: A short-period demultiple tool for streamer, OBN and land environments
Wave-equation deconvolution: A short-period demultiple tool for streamer, OBN and land environments
Short-period multiple attenuation is often challenging as the multiple generators are typically not sufficiently well recorded as primary events for SRME to be successful. Model-based approaches have traditionally been used to circumvent this problem but may only model multiples generated by key events such ...
Microplastic Rapid Screening Method Development Using Automated Mineralogy
Microplastic Rapid Screening Method Development Using Automated Mineralogy
This study is concerned with testing the application of Automated Mineralogy (AM), specifically QEMSCAN, to identify and quantify microplastic particles within a solid heterogeneous specimen, as an initial assessment of how this technique may be utilised in microplastic research and environmental monitoring. It utilises ...
How a multidisciplinary, data-driven geoscience approach is required to help achieve the energy transition goals
How a multidisciplinary, data-driven geoscience approach is required to help achieve the energy transition goals
Hydrocarbon energy resources have been extracted from the Earth for many decades using in-depth technical knowledge of its subsurface. With the need to achieve net zero goals, many traditional hydrocarbon companies are reducing the carbon intensity of their operations and investing in renewable energy ...
Baleine Discovery: Cote D’Ivoire’s Exploration “Black Swan”
Baleine Discovery: Cote D’Ivoire’s Exploration “Black Swan”
The recent world-class Baleine discovery within the Deep Tano Basin has attracted renewed exploration interest for the offshore Côte d’Ivoire. Its structural complexity and depositional stratigraphy, resulting from multiphase rifting of this basin, require high-quality seismic data to develop detailed geological models. To achieve ...