1-20 of 111
Keywords: event location
Close
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3583892
... All methods for microseismic data acquisition, such as surface geophone arrays, downhole geophone arrays, and now distributed acoustic sensing (DAS), have trade-offs in the accuracy of event location. Surface geophone arrays can localize events well in 3D but suffer from high noise levels...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3582729
... fracturing operation in Oklahoma. machine learning deep learning ann location reservoir characterization upstream oil & gas microseismic event neural network accuracy artificial intelligence applied geoscience earthquake arrival time event location traveltime eisner p-wave arrival...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3593211
... time imaging (RTI) for determining microseismic event locations. RTI is based on the reversibility of the wave equations. It propagates the recorded microseismic events back to their source locations. We apply elastic RTI to locate microseismic events in three stages of a hydraulic fracturing treatment...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3579999
... The velocity model in downhole microseismic monitoring plays a vital role in accurate mapping of the hydraulic fracturing image, but the conventional velocity optimization method by the perforation shot introduces non-negligible event location errors when the geological formations are complex...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3581023
...Migration-based event location for DAS geophone hybrid microseismic monitoring from a single monitoring well: Hydraulic stimulation case studies for oil/gas and geothermal applications Takashi Mizuno*, Joel Le Calvez, Schlumberger Summary using a DAS-geophone hybrid array. Thanks...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3426961
... microseismic event locations and the velocity model for horizontal transverse isotropic (HTI) media. The procedure employs Bayesian inference via Markov-chain Monte Carlo (McMC) sampling with parallel tempering and diminishing adaptation to ensure efficient sampling of the parameter space. This algorithm...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3427486
... depth in the reservoir section. Due to strong velocities contrasts, recorded seismic signals were very complex to analyse, with refracted and reflected waves combining with direct arrivals. Seismic events location remains then a major challenge. Thanks to waveform modelling, phase identification...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3423107
... We present a case study from the West Texas Permian Basin of constraining anisotropic velocity and improving microseismic event locations by using microseismic shear-wave splitting data (SH-wave arrival is earlier than Sv-wave arrival). There are 2 downhole arrays with 12 geophones in each array...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3208059
... Start Time: 1:50 PM Presentation Start Time: 3:30 PM Location: 301B Presentation Type: Oral borehole sensor injection seg international exposition upstream oil & gas event cluster co 2 different waveform characteristic constraint decatur cc site event location reservoir...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3213938
... Location: 217B Presentation Type: Oral event location attenuation tomography correlation metals & mining microseismicity corner frequency upstream oil & gas annual meeting spectra van der baan spectral fitting inversion seg international exposition barthwal reservoir...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3215517
... ABSTRACT The velocity model and the distribution of the microseismic events contribute to understanding the hydraulic fracturing processes. We invert the event locations and the five Thomsen parameters simultaneously with the cross doubledifference (CDD) method in vertically layered...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3215358
... for seismic anisotropy may cause enormous errors in microseismic event location for shale formations. In this paper, we first analyze the influence of anisotropy on location results by using numerical simulation, and then propose an improved iterative Geiger’s method by considering velocity anisotropy...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2967915
... velocity model upstream oil & gas receiver origin time evolutionary algorithm event location seg international exposition application thomsen parameter optimization problem tensor annual meeting artificial intelligence machine learning Chapman , C. , and W. Leaney...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2996295
... upstream oil & gas microseismic activity co2 injection reservoir characterization magnitude event greenhouse gas control seismicity locatable event event location microseismic monitoring energy conservation Goertz-Allmann , B. , S. Gibbons , V. Oye , R. Bauer...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2996453
... monitoring. Compared to vendor?s fixed isotropic velocity model results, we not only improved microseismic event locations, but also updated anisotropic velocity model. The mean of arrival time residuals has been reduced by 40%, which implies more accurate event locations, thus can help optimize well...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2997091
... event location from the true event location (e.g. Cipolla et al., 2011), Zimmer, 2017). Accounting for this inflation effect is especially important if the magnitude of the interpreted variable, i.e. fracture height, is of the same order as the location uncertainty in this direction. As an example...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2997548
... network. We expect that the location neural network extract the relationship between the waveform feature and the event location, and predict the locations for the truncated waveforms from the detection neural network. We construct an automatic processing scheme by combining the detection and location...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2980345
... the likelihood of fault reactivation based on their orientations and spatial locations with respect to the mine layout. Results show that the fault inferred from the microseismic event locations near the 480 m tunnel network and the main shaft is well oriented for reactivation. However, the static stresses...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17730445
... event locations using such noisy data is always a major challenge of passive monitoring, especially for a surface array. To overcome a large number of false picks due to background noise, a random sampling method is applied to classify picked arrival times into event and nonevent clusters. By isolating...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17743273
... travel time annual meeting reference list event location historic event station correction seg seg international exposition active fault velocity model recent event seismicity Dewey , J. , 1972 , Seismicity and tectonics of Western Venezuela : Bulletin of the Seismological...

Product(s) added to cart

Close Modal