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Keywords: baseline
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Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4099790
...). Similar to MF, networks are trained to match the monitor to baseline in the shallow depths, which do not contain reservoir signal. Trained CNNs then match the full data to reduce 4D noise, while preserving the reservoir signal as much as possible. CNNs match monitor time samples one by one, using as input...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 27–September 1, 2023
Paper Number: SEG-2023-3909786
... inversion (FWI) algorithm incorporating the proposed model for predicting the time-evolution of CO 2 saturation and pore pressure. This approach allows for direct updating of reservoir properties from seismic data. We derive static rock properties, such as porosity and clay content, from baseline data...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 27–September 1, 2023
Paper Number: SEG-2023-3917342
... in the sensor, which enables edge processing by collecting and analyzing asset data at high resolution to help understand causal factors, sending only relevant data to the cloud. Physics based models in the cloud autoconfigure assets in minutes to create a machine baseline. A unique asset signature is also auto...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3583439
... reservoirs using 4D seismic faces designed in a temporal window where reservoir changes are many challenges. The repeatability between different not expected and can be computed on a global or trace-by- surveys needs to be optimal in which changes are only trace basis from the baseline to the monitor survey...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3583913
..., due to the inevitable interpreter subjectivity and the long term nature of CCS project. Moreover, reliable interpretation is based on adequate match between the baseline and time-lapse datasets, requiring great processing effort. We propose a neural network (NN)-based interpretation from 4D seismic...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3428312
... wells and a baseline in another. 4D observations made from fast-track analysis in one well are impacting well operations, and more useful results are expected after completion of full processing and interpretation. We share some highlights from all stages of this DAS survey realization – from planning...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3412788
... reservoir characterization production logging field data apache corporation baseline seg international exposition synthetic data geometry operation srv inter-stage das vsp data exploration geophysicist 10 well 9bf Analysis of scattered waves observed in inter-stage DAS VSP data from zipper...
Proceedings Papers
Xuefeng Shang, Henning Kuehl, Michael Kiehn, Bruce Strawn, Jonathan Sheiman, Kaijian Liu, Fons ten Kroode
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3215845
... ABSTRACT In this paper, we report a new implementation of joint leastsquares migration (LSM) in time-lapse (4D) imaging. As in previous work, we invert baseline and monitor reflectivities simultaneously. Instead of promoting the sparsity of the time-lapse signal, we use a structure compliant...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3215704
... ABSTRACT A new 4D iterative Least-Squares Migration (LSM) technology and workflow have been developed to extract 4D signal between two streamer surveys with very different acquisition geometry over the Pyrenees Fields. The study shows the baseline reflectivity is created by iterative LSM which...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3216004
... that attempt to remove differences in phase and amplitude between baseline and monitor seismic volumes to improve the quality of 4D signals. The conventional Least-Squares matching filter derived by minimizing the energy in the square of the difference between baseline and matched monitor datasets has a number...
Proceedings Papers
Richard Ford, Francesca Twynam, Philippe Caprioli, Michael Hooke, Richard Whitebread, Paal Kristiansen, Daniele Boiero, Per-Eivind Dhelie, Vidar Danielsen, Knut Richard Straith
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3216415
... seg international exposition reservoir characterization attenuation udd vintage workflow acquisition baseline deconvolution amplitude annual meeting upstream oil & gas sequence Amundsen , L. , 2001 , Elimination of free-surface related multiples without need of a source...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3213915
... preventing reliable 4D estimates. Interestingly, the reverse bootstrap implementation (i.e., monitor inversion before baseline inversion) can regenerate these forward bootstrap artifacts with a phase reversal; thus, the central-difference summation can attenuate such artifacts. The proposed method provides...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3214042
... time-lapse DAS VSP was acquired to detect changes in the seismic response following hydraulic stimulation. A traveltime analysis revealed that the direct P-wave arrivals were delayed relative to the baseline and the maximum time-delay was located at the center of the fracturing stage. A slower seismic...
Proceedings Papers
Patrick Charron, Abderrahim Lafram, Eddy Brosille, Benoit Santos Luis, Sergio Tchikanha, Emerson Jungo, Kacem Chikh, Celso Gomes
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3214738
... ABSTRACT Even if 4D technology is mature, acquisition solutions available today increase the possibility of having a baseline and a monitor using different technologies. Since the industry "down-turn", all budget went down and 4Ds had also to adapt with this new constraint. Acquisition...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2992209
... ABSTRACT Baseline and repeat VSP surveys were conducted by Shenhua CCS (Carbon Capture and Storage) demonstration project in Ordos Basin, China. A complete workflow of time-lapse VSP monitoring method was presented in this paper. Wave field separation and consistency processing, two key...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2995521
... to handle the larger number of sources simultaneously operational in the field. Additionally, using the Simultaneous Joint Migration Inversion (SJMI) technology it is possible to reliably recover time-lapse information despite the significant mismatch between baseline and monitor survey geometries...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2975383
... baseline innovation joint sparsity recovery seg international exposition jsr inversion acquisition Improve 4D Seismic Interpretability with Joint Sparsity Recovery Lei Wei*, Yue Tian, Chang Li, and Shauna Oppert, Chevron Energy Technology Company Gilles Hennenfent, Chevron Corporation Summary We...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-W12-04
... exposition geophysics time-lapse waveform inversion constraint wavenumber kazei inversion regularization time-lapse waveform inversion regularized baseline Time-lapse waveform inversion regularized by spectral constraints and Sobolev space norm Vladimir Kazei , Tariq Alkhalifah KAUST SUMMARY...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2986775
... calculated using the gradients of the baseline and monitoring data, which acts as a preconditioner, is introduced to localize the update area to the affected regions. Specifically, we suppress the similarities of the two gradients and at the same time highlight their differences when calculating the soft...
Proceedings Papers
Publisher: Society of Exploration Geophysicists
Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2996009
... , 10.1029/94JB03134 . deformation annual meeting porosity factor estimation log analysis heather fm reservoir characterization estimation baseline upstream oil & gas well logging seg international exposition orientation velocity change overburden shale anisotropy shale...
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