Laboratory Study of Gas and Water Flow in the Nordland Shale, Sleipner, North Sea

J. F. Harrington, D. J. Noy, S. T. Horseman, D. J. Birchall, R. A. Chadwick

AAPG Special Volumes

... quantified by inverse modeling using an axisymmetric two-dimensional finite element model. Estimates for elastic deformation parameters were derived...

Three-Dimensional Trend Mapping Using Gamma-Ray Well Logs: Simpson Group, South-Central Kansas

J. H. Doveton , Zhu Ke-an , J. C. Davis

AAPG Bulletin

..." of the shape of a distribution. Higher moments express more subtle aspects of distribution shape, require the calculation of very large numbers...

Abstract: Full Waveform Inversion with Phase Encoded Deconvolution Imaging Condition; #90224 (2015)

Wenyong Pan, Kris Innanen, and Gary Margrave

Search and Discovery.com

... source encoding strategy is used for the gradient calculation. The gradient is a poorly scaled reverse time migration image based on cross-correlation...

Comparison of Bed Form Variance Spectra Within a Meander Bend During Flood and Average Discharge

Raymond A. Levey, Bjorn Kjerfve, Rufus T. Getzen

Journal of Sedimentary Research (SEPM)

... produced by the flood discharge were rapidly altered as the stage return d toward average level. ACKROYD, M. D., 1973, Digital Filters: London...

Abstract: Kirchhoff Imaging in a Matrix Form. Part II: Least Squares Migration; #90174 (2014)

Abdolnaser Yousefzadeh and John C. Bancroft

Search and Discovery.com

... reflectivity model by , and the Kirchhoff modelling operator by , the seismic data, , is given by, . (1) The inverse of this calculation should return...

Insight on the uplift the Wave-Equation Based AVO technology may have on unconventional reservoirs: A case study on the Vaca Muerta Formation, Neuquén Basin, Argentina.

David Curia, Ezequiel Valeff, Francisco Ghersi, Hansel Gonzalez, Pablo Benitez

Unconventional Resources Technology Conference (URTEC)

... indicator, while the Shear Compliance is a lithology indicator, it is completely insensitive to fluid, as the inverse of the Shear Modulus...

Advances in Seismic Fault Interpretation Automation, by Randolph Pepper and Gaston Bejarano, #40170 (2005).

Search and Discovery.com

Abstract: Properties of Gabor Operators for Seismic Imaging; #90171 (2013)

Michael P. Lamoureux and Gary F. Margrave

Search and Discovery.com

...), wm is a window function for some index m, F is the Fourier transform operator, and ω is the frequency variable. An inverse to the Gabor transform...

Abstract: Recovering Low Frequencies for Impedance Inversion by Frequency Domain Deconvolution; #90224 (2015)

Sina Esmaeili and Gary Frank

Search and Discovery.com

... be rewritten as I n1  I1  1  2rj  , n j 1 and by a simple calculation, 1  2rj can be estimated as (7) Datapages/Search and Discovery...

Recent Advances and Experiences in Subsalt Seismic Imaging

Search and Discovery.com

Improvement of inverse scattering angle-domain common image gathers using optical flow

Ammir A. Karsou, Sérgio L. E. F. da Silva, Felipe V. Capuzzo, Felipe T. Costa, Jorge Lopez, Roger M. Moreira, Marco Cetale

International Meeting for Applied Geoscience and Energy (IMAGE)

...Improvement of inverse scattering angle-domain common image gathers using optical flow Ammir A. Karsou, Sérgio L. E. F. da Silva, Felipe V. Capuzzo...

An Inverse Approach for Relating Seismic Velocity and Overpressure to Permeability and Sedimentation History in Deep Basins, #40863 (2012)

Hector M. Moreno, Tim A. Minshull, Rosemary A. Edwards,

Search and Discovery.com

...An Inverse Approach for Relating Seismic Velocity and Overpressure to Permeability and Sedimentation History in Deep Basins, #40863 (2012) Hector M...

Longshore Grain Sorting and Beach Placer Formation Adjacent to the Columbia River

Michael Zhenlin Li, Paul D. Komar

Journal of Sedimentary Research (SEPM)

... liquid and inexpensive filters for separation of mineral grains: Journal of Sedimentary Petrology, v. 57, p. 765-766. CLEMENS, K.E. AND KOMAR, P.D., 1988...

40Ar/39Ar Geochronology of Lavas from the Central Plateau Member of Plateau Rhyolite with Implications for Magma Residence Times and Eruptive Reoccurrence Intervals, Yellowstone National Park

Todd A. Dallegge

Rocky Mountain Association of Geologists

... to yield a weighted mean that was too young (109±7 ka). Organizing the data for an ‘inverse’ running weighted mean calculation indicates...

Reducing Geologic Uncertainty in Seismic Interpretation; #41947 (2016)

Jim Bock

Search and Discovery.com

... become exceeding valuable. This presentation will examine a number of uncertainty reducing workflows associated with both forward and inverse...

Deep learning seismic full-waveform inversion and transient EM joint inversion for near surface velocity modeling

Daniele Colombo, Ernesto Sandoval-Curiel, Ersan Turkoglu, Weichang Li

International Meeting for Applied Geoscience and Energy (IMAGE)

... using an empirical regression obtained from shallow well logs (Colombo and Keho, 2010). The forward 1D TEM calculation uses a modified Boerner and West...

An effective multiphysics toolkit for lithium prospecting: From geophysics to the static reservoir model in Pozuelos salt flat, Argentina

Ana Curcio, Eliana Chanampa, Luis Cabanillas, Ricardo Piethe

International Meeting for Applied Geoscience and Energy (IMAGE)

... are shallower than 500 meters. We find an important inverse fault that divides the deeper part of the model. Figure 3 also shows 3 monitoring wells (MW...

Comparison of EMD and S-Transform Spectral Decomposition for Characterizing Hydrocarbon Reservoir: Case Study of East Java Basin

Abdul Haris, A. M. Ustad, Didik Ardiyanto, Gadang G. Wihardy, Budiyono, Tri Bowo, Murti Widyawan

Indonesian Petroleum Association

..., a problem of scale frequency in the CWT method is resolved through the inverse Fourier transform of the CWT. This method was later named Time Frequency...

Viability of long-short term memory neural networks for seismic refraction first break detection … a preliminary study

Tasman Gillfeather-Clark, Eun-Jung Holden, Daniel Wedge, Tom Horrocks, Carlie Byrne, Matthew Lawrence

Petroleum Exploration Society of Australia (PESA)

.... By defining the first break you allow for the calculation of subsurface velocities and subsequently define the depth of the basement. First break...

Inexpensive Dual Beam Turbidimeter

Cathie Lubell, Thomas Barry, Edward Brody, Gregory Hearn

Journal of Sedimentary Research (SEPM)

... of these methods is that multiple scattering effects are significant for small transmittance, and they invalidate the inverse proportionality between...

Delineation of Gas Sands by Seismic Stratigraphy in the Pericocal Area, Orinoco Heavy Oil Belt, Venezuela: Section IV. Exploration Methods

J. Licheri, N. Parra

AAPG Special Volumes

...); it consists of an inverse filter in the time domain where reflection coefficients are obtained using the Burg algorithm (Fig. 9). Later, the wavelet...

Abstract: Digital Expert for DAS Passive Seismic Monitoring: Integration of Image Processing and Geophysical Processing; #91204 (2023)

Takashi Mizuno, Joel Le Calvez, Nicholas Fundytus, and Pierre Bettinelli

Search and Discovery.com

... seismic data processing. After applying filters to the Hough transform result to eliminate non-seismic arrivals, we are able to obtain seismic...

Improved Unconventional Development Decisions using Causal Inference

Henry Galvis Silva, Oliver Rojas Conde, Sebastien Matringe

Unconventional Resources Technology Conference (URTEC)

... across groups based on propensity scores. • Inverse Probability Weighting (IPW): Adjusts groups' weights using propensity scores to form a balanced...

VSP Guided Reprocessing and Inversion of Surface Seismic Data

R. Gir, Dominique Pajot, Serge Des Ligneris

Southeast Asia Petroleum Exploration Society (SEAPEX)

... a multiple local dip computation. The dip tendency calculation at any point is made over a previously defined window of seismic traces. These surfaces...

Recognition of Subtle Features in Geologic Maps

J. E. Robinson, D. F. Merriam

CSPG Special Publications

.... E., and Ellis, M. J., 1971, Spatial filters and a FORTRAN IV program for filtering geologic maps: GEOCOM Programs (1), London, 21 p. Robinson, J. E...