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Keywords: microseismic event
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Proceedings Papers
Illuminating geothermal reservoir structure: DAS microseismic imaging at Utah FORGE
Available to PurchaseYuanyuan Ma, Jonathan Ajo-Franklin, Michal Chamarczuk, Jeremy Patterson, Ismael Vera Rodriguez, David Podrasky, Thomas Coleman, Carlos Maldaner
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4078563
... This study presents reservoir imaging progress at the Utah FORGE site by using microseismic reflections recorded by Distributed Acoustic Sensing (DAS) during circulation tests in July 2023. The imaging technique treats microseismic events as high-frequency sources, applies prestack Kirchhoff...
Proceedings Papers
Deep learning-based 3D microseismic event direct location using simultaneous surface and borehole data: An application to the Utah FORGE site
Available to PurchasePublisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4100633
... in Geothermal Energy (FORGE) project in Utah, direct location of microseismic events stimulated from fluid injection can offer vital insights about fracture propagation and reservoir connectivity for more informed production decisions. Surface and borehole seismic arrays are usually deployed for monitoring...
Proceedings Papers
Enhancing fiber-optic DAS microseismic event detection in imbalanced data using embedding space optimization
Available to PurchasePublisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-w06-01
... Detecting microseismic events from Distributed Acoustic Sensing data presents significant challenges, particularly due to the prevalent label imbalance in seismic datasets. Noise data overwhelmingly outnumbers event labels, leading to a high false negative ratio when using conventional deep...
Proceedings Papers
Continuous DAS measurements during CCUS operations onshore Japan
Available to PurchaseShotaro Nakayama, Yuji Yamada, Takuji Mouri, Pierre Bettinelli, Takashi Mizuno, Jianxiong Chen, Philip Armstrong, Yuki Maehara
Publisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4095166
... operations. We used two fiber optic cables installed behind a production casing string of two wells in the field. In this pilot project, each of the two wells served dual roles as both a producer and an injector. To efficiently detect microseismic events from a large amount of the continuous DAS record, we...
Proceedings Papers
Automatic detection of DAS-recorded microseismic fracture reflections
Available to PurchasePublisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4095418
... to be identified by manual inspection before, have been identified. deep learning reflection geologist artificial intelligence petroleum geology machine learning economic geology hydraulic fracturing reservoir characterization microseismic event p-and s-wave arrival amplitude microseismic...
Proceedings Papers
Machine-learning based arrival-picking in continuous DAS recordings - Application to the Utah FORGE EGS project
Available to PurchasePublisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4097931
... microseismic arrivals also in the testing data. These picks can be used for further automatic processing such as event localization and magnitude estimates. deep learning das data artificial intelligence structural geology machine learning microseismic event american association reservoir...
Proceedings Papers
Getting more from microseismic data by asking less of it
Available to PurchasePublisher: Society of Exploration Geophysicists
Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4099970
... fracture creation. fracture height fracture exploration geophysicist geology geological subdiscipline receiver array hydraulic fracturing microseismic data applied geoscience & energy 10 geologist reservoir characterization dataset microseismic event david rampton carnegie mellon...
Proceedings Papers
Detecting microseismic events on DAS fiber with super-human accuracy
Available to PurchaseFantine Huot, Ariel Lellouch, Paige Given, Robert G. Clapp, Biondo L. Biondi, Tamas Nemeth, Kurt Nihei
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-2021-3583060
... Microseismic analysis is the primary tool available for fracture characterization in unconventional reservoirs. As DAS fibers are installed in the target reservoir and are thus close to the microseismic events, they hold vast potential for their high-resolution analysis. However, accurately...
Proceedings Papers
Near-field strain of microseismic events in downhole DAS data
Available to PurchasePublisher: 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-2021-3582141
... The emerging fiber-optic DAS technology has revolutionized microseismic acquisition to a new level with unprecedentedly high spatial resolution and low deployment cost. Fiber-optic cables deployed in deviated boreholes enable observation of hydraulic-fracturing-related microseismic events...
Proceedings Papers
Time-frequency sparse Gabor transform for detecting microseismic events
Available to PurchasePublisher: 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-2021-3583114
.... We test the algorithm on a real microseismic data set in a Montney reservoir. The results show that the proposed method can automatically detect potential microseismic events with an increased precision rate and works well with noisy data. Note: This paper was accepted into the Technical Program...
Proceedings Papers
Reservoir characterization using DAS microseismic events
Available to PurchasePublisher: 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-2021-3583216
... We show examples of rich microseismic events’ data acquired using fiber optic cables (DAS) during hydraulic fracturing in the Chalk Bluff Denver-Julesburg (DJ) basin in Colorado, US. DAS microseismic recordings contain signal of many different waves such as P- and S-direct waves, converted waves...
Proceedings Papers
Moment-tensor inversion of hydraulic fracturing-induced events in a Montney reservoir, Northeastern British Columbia
Available to PurchasePublisher: 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-2021-3583256
... inversion. First, we apply the inversion on synthetic amplitudes and test different input parameters to find the best inversion scheme. Then, we perform the moment-tensor inversion on over 1000 microseismic events in a Montney reservoir, northeastern British Colombia (BC). The inversion results are compared...
Proceedings Papers
Convolutional neural network for guided-wave energy identification in microseismic DAS data
Available to PurchasePublisher: 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-2021-3573385
... of microseismic events with guided wave energy recorded by distributed acoustic sensing (DAS). Because of a limited number of field events, we use finite difference modeling to generate a larger number of synthetic events with and without guided wave energy, which are then used to train the CNN. The CNN performs...
Proceedings Papers
Adaptive full-waveform moment-tensor inversion of microseismic data
Available to PurchasePublisher: 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-2021-3594469
... It is very challenging to accurately invert for moment tensors of microseismic events recorded using a single-borehole geophone array. Full-waveform moment-tensor inversion uses the phase and amplitude of microseismic waveforms to invert for the moment tensor of a microseismic event...
Proceedings Papers
Transdimensional downhole velocity optimization by incremental pseudo-master method
Available to PurchasePublisher: 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-2021-3579999
... with inclinations or pinch-outs. We exploit the advantages of the reversible jump Markov Chain Monte Carlo (rjMCMC) approach in generating different dimensions of velocity models and propose a transdimensional velocity optimization approach called incremental pseudo-master (IPM) method to improve microseismic event...
Proceedings Papers
Predicting the azimuth of in-situ horizontal stress by integrating multiple discipline data
Available to PurchasePublisher: 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-2021-3595028
... stress reservoir geomechanics azimuth value microseismic event histogram fracture horizontal stress horizontal well anisotropy azimuth strike Predicting the azimuth of in-situ horizontal stress by integrating multiple discipline data Bo Zhang*, The university of Alabama; Kai Lin, Chengdu...
Proceedings Papers
Microseismic event location using artificial neural networks
Available to PurchasePublisher: 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-2021-3582729
... of feed-forward neural networks to real datasets is in changing set or receivers where we pick time arrivals, leading to a non-regular input. We show how this problem can be overcome with a transfer learning approach and validate it by locating microseismic events that occurred during a hydraulic...
Proceedings Papers
Microseismic reservoir imaging in the Permian Basin
Available to PurchasePublisher: Society of Exploration Geophysicists
Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3399804
... hydraulic fracturing wavelength microseismic imaging ramya ravindranathan imaging expanded abstract exploration geophysicist 10 upstream oil & gas permian basin vladimir grechka microseismic event seg international exposition derivative grechka reservoir characterization resolution...
Proceedings Papers
DAS characterization of an unconventional shale reservoir using guided waves
Available to PurchasePublisher: Society of Exploration Geophysicists
Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3406984
... Unconventional shale reservoirs can act as waveguides if their velocity is lower than their surroundings. Using DAS, we can record such guided waves as unaliased signals originating from both cross-well perforation shots and microseismic events. When S-type guided waves propagate through...
Proceedings Papers
Microseismic event or noise: Automatic classification with convolutional neural networks
Available to PurchasePublisher: Society of Exploration Geophysicists
Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3414896
... to determine whether the data contain microseismic events or only noise. The manual nature of these inspections can take many weeks, sometimes over a month, to perform for one geophysicist. Automated approaches usually use a short-term-average long-termaverage (STA/LTA) ratio, but end up picking false...
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