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Keywords: inversion
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Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2024
Paper Number: OTC-35354-MS
... of 10m. The data processing was done for each shot and includes the manual picking of the dispersive curves and a 1D inversion modelling. The pseudo 3D gridding was then carried out by interpolation with the closest neighbors. The results are found to be of good quality, with clear dispersive curves...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 2023
Paper Number: OTC-32425-MS
.... In such domains, the integration of sonic log-derived information into the joint inversion problem is critical as the scale is fundamentally different. Our algorithm respects the resolution of sonic measurement, while it calibrates the wavelength where microseismic data have sensitivity: the number of unknown...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2022
Paper Number: OTC-31710-MS
... to characterize the reservoir, considering heterogeneous nature of the carbonate build up ( DTEK, FranLab, 2020 ). Seismic inversion allowed for the porosity prediction and main lateral trends; however, resolution of the prognosis was too coarse to pick variations of individual porosity streaks. What was even...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2022
Paper Number: OTC-32049-MS
... velocity prediction. However, the accuracy of the velocity field created by conventional velocity modeling struggles to meet the requirements for accurate pore pressure prediction. To solve this problem, a new velocity modeling method is proposed that in depth domain is based on grid tomographic inversion...
Proceedings Papers

Paper presented at the Offshore Technology Conference, August 16–19, 2021
Paper Number: OTC-31195-MS
... ( Figure 4 ) represents the resistivity model built to provide UDAR simulation, using offset well 15 S resistivity property. The objective is to guide the landing by confirming the reservoir top on Ultra Deep Azimuthal Resistivity Tool inversion to optimize the landing and neither overshoot the reservoir...
Proceedings Papers

Paper presented at the Offshore Technology Conference, August 16–19, 2021
Paper Number: OTC-31102-MS
... complex shallow sediments. Instantaneous amplitude, phase, and frequency are the most widely used seismic attributes to indicate geological features, but those time-domain data are too limited to define an accurate subsurface model in depth. Therefore, seismic inversion is also required to generate...
Proceedings Papers

Paper presented at the Offshore Technology Conference, August 16–19, 2021
Paper Number: OTC-30917-MS
... of the tool is demonstrated using a full-scale yard mockup with known defects. A data-processing workflow, including multizone calibration and model-based inversion, is proposed to estimate the tubulars electrical conductivity, magnetic permeability, wall thickness, and eccentricity. An in-situ, multizone...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 2020
Paper Number: OTC-30573-MS
... quantitative information on the composition of the sediments and their physical properties. Seismic inversion is a method to convert the wave signals from time-to space-domain and derive specific material properties by using iterative numerical modeling. In this paper, we introduce a probabilistic seismic...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 2020
Paper Number: OTC-30550-MS
... the predictability of geohazards for the entire reservoir overburden section. A variety of seismic volumes including amplitude reflection, amplitude versus offset (AVO), seismic inversion, seismic velocity, coherence data, etc. allows for the optimization of interpretations such as stratigraphy, structure, and rock...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29382-MS
...OTC-29382-MS Accurate Frequency Division Inversion Based on Seismic-Well Fusion in Seismic Data Superposition Area Wenbo Gao, Mingchun Wang, and Wenxiong Chen, Tianjin Branch of CNOOC Ltd; Xin Zhou, Schlumberger; Yue Mao, Wood Mackenzie Copyright 2019, Offshore Technology Conference This paper...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29674-MS
... density upscaling profile), as this is then transferred to a probabilistic geophysical inversion, including the corresponding uncertainty propagation and. gas hydrate material property machine learning well-logging data seismic data upstream oil & gas artificial intelligence modeling...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29310-MS
... upstream oil & gas target layer gamma curve oilfield bottom water reservoir artificial intelligence machine learning application inversion oil column height reservoir characterization geological guidance technology drilling reservoir Zhen zhenlai . Research and Application...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2018
Paper Number: OTC-28730-MS
... Abstract The application of seismic inversion techniques to the foundation and drilling top hole zones has garnered significant interest in recent years. The shift towards more geologically complex and deeper water sites, combined with the global economic climate, has driven a requirement...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 2017
Paper Number: OTC-27723-MS
... [Pirrone, et. al. 2014], inverting for porosity and volume fraction of water using seismic, electrical and density data [Miotti, et. al., 2009], waveform inversion for data from ground penetrating data [Cordua et. al., 2010], determination of lithology [Delfiner, 1987, Merletti, et. al., 2010...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 2017
Paper Number: OTC-27685-MS
...OTC-27685-MS Lithology and Fluid Facies Identification from Post-Stack Seismic Inversion Kyle T. Spikes, The University of Texas Copyright 2017, Offshore Technology Conference This paper was prepared for presentation at the Offshore Technology Conference held in Houston, Texas, USA, 1 4 May 2017...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2016
Paper Number: OTC-27164-MS
... inhomogeneities. Traditional tomographic velocity inversion methods could not provide sufficient resolution of the small-scale velocity anomalies within the MTC. As a result, seismic events below the MTC appeared distorted and out of focus. Multiple iterations of high-frequency full waveform inversion (FWI), up...

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