3-D Finite Difference Modeling of Microseismic Source Mechanisms in the Wolfcamp Shale of the Permian Basin

Robert Meek, Robert A. Hull, Austin Von der Hoya, David Eaton

Unconventional Resources Technology Conference (URTEC)

..., Peter M., 2011, Microseismic Event Models from Finite-differencing with Corrections, Presented at the CSPG CSEG CWLS Geoconvention. Maxwell, S.C....

Tropical Storm Isidore and Hurricane Lili: Louisiana Barrier Shoreline Response, Preliminary Results

Asbury Sallenger, Shea Penland, William Krabill

GCAGS Transactions

... were created by gridding the two lidar surveys and differencing the surface elevations. These vertical differences were plotted on top of grey-scale...

The Bipolar Line Level: A Simple Method of Topographic Surveying

Joann Mossa

Journal of Sedimentary Research (SEPM)

.... Following field work, line heights are added to the spreadsheet, and relative elevations are computed by cumulative differencing of line elevations...

Abstract: The Phase Shift Time Stepping Equation and the Marmousi Data Set; #90171 (2013)

Ben D. Wards, Gary F. Margrave, and Michael P. Lamoureux

Search and Discovery.com

...-difference RTM. Figure 2 is a comparison of the Migrated Marmousi data set using PSTS equation (right) and finite differencing the wave equation...

Direct Reservoir Imaging: The Need for Innovative Advancement in Exploration and Production, #41510 (2014).

Sofia Khan

Search and Discovery.com

... that the particular formation is porous and permeable. The lower frequencies of interest are generated due to summing and differencing of the discrete...

3D Inversion of Time-Domain Electromagnetic Data for Ground Water Aquifers, #41610 (2015).

Elliot M. Holtham, Mike McMillan, Eldad Haber

Search and Discovery.com

... data can be computed from ui by finite differencing in time, and interpolating in space and time. For time channel j and source-receiver pair i, we...

Particle Shape in Simulants of the Lunar Regolith

Doug Rickman, Christopher Immer, Philip Metzger, Emily Dixon, Matthew Pendleton, Jennifer Edmunson

Journal of Sedimentary Research (SEPM)

... simulant particle shapes, and lunar regolith particle shapes measured in the future, can be quantified by differencing the accumulated distributions. Thus...

Methodology for Enhancing and Evaluating Geologic Effects of Time Series Models: A Case of Ground Response in Santa Clara Valley, California, #41097 (2012)

Olusola Samuel-Ojo, Lorne Olfman, Linda A. Reinen, Arjuna Flenner, David D. Oglesby, Gareth J. Funning

Search and Discovery.com

... implements first order differencing while a Laplacian filter uses Laplacian operators and implements second order differencing on a Gaussian filter which...

Comparison of Satellite Altimetric Gravity and Ship-Borne Gravity„Offshore Western Australia

Asbjorn Norlund Christensen, Ole B. Andersen

Petroleum Exploration Society of Australia (PESA)

... by differencing the satellite gravity data from the marine gravity data. The spectra have been clipped to wavelengths shared by the reference marine...

Abstract: Case Study- High Resolution Velocity Model Building to Improve Carbonate Reefs Image in Tz Area; #91204 (2023)

Hongjun Zhang, Yang Chen, Zhengzheng Zhou, Xiang Li, Hotma Yusuf, Haryono Haryanto, Farid Dasa Marianto

Search and Discovery.com

... to prevent from time frequency dispersion and aliasing due to insufficient sampling during time differencing to guarantee the resolution of inversion...

With Proper Spacing and Enough Time, Shale Wells May Produce Much More Gas; #80670 (2019)

Tadeusz Wiktor Patzek

Search and Discovery.com

... counties with no adjustable parameters The field production rate is obtained from differencing cumulative production and some smoothing Match...

Reservoir Modeling and Composition Simulation of Primary Depletion and Carbon Dioxide Flooding of a Small Pennsylvanian Carbonate Mound Complex, Runway Field, Paradox Basin, Utah, Volume 1-3 (OFR-421)

Wilmer E. Culham, Douglas M. Lorenz

Utah Geological Survey

... over Runway field, the gridded two-way seismic travel time within the Desert Creek interval was first computed by differencing the top and base Desert...

Influence of Shale Distribution Types on the Effective Porosity of Sandstone Reservoirs

Gregory J. Ferguson, James J. Willis, Duncan S. McIntosh, Jr., Jesse W. Zwennes, James Pasley, Garrett M. Goettel

GCAGS Transactions

...) and differencing the clay bound water fraction (Coates et al., 1999). However, both total and effective porosities derived via nuclear magnetic...

CSPG/CSEG/CWLS GeoConvention 2011; - Abstracts, #90173 (2015).

Search and Discovery.com

Coastal Hazards and the Global Distribution of Human Population

Christopher Small, Vivien Gornitz, Joel E. Cohen

Environmental Geosciences (DEG)

...) includes ocean convection, vertical diffusion, and bottom friction. The mass balance of the crysosphere is calculated by differencing snowfall and ice melt...

Pore Type Analysis: Relation to Producibility, Recovery Efficiency and Log Response in Some Indonesian Reservoirs

David K. Davies, Abdul Muin

Indonesian Petroleum Association

... and geometric complexity of that porosity (erosion-dilation differencing). Objective determination of pore types using a procedure for pattern...

Micro-CT Analysis of Pores and Organics in Unconventionals Using Novel Contrast Strategies

Andrew Fogden, Thomas McKay, Michael Turner, Rohini Marathe, Tim Senden

Unconventional Resources Technology Conference (URTEC)

... with a contrast brine, followed by registration and differencing, generally will not suffice for unconventionals, as the local attenuation boost...

Geochemical Variations in an Alpine Lake and Watershed Underlain by Siliciclastic Bedrock, Uinta Mountains, Utah

John W. Christensen Jr., Paul W. Jewell

Utah Geological Association

... scheme in the vertical dimension and a leapfrog time differencing scheme (Mellor and Durbin, 1975). The model uses 40 vertical grid points which have...

Extension of the Western Transverse Ranges Zone of Cenozoic Block Rotations North of the Santa Ynez Fault, California

Katherine J. Whidden, Steve P. Lund, David J. Bottjer

Pacific Section SEPM

... a well defined linear characteristic remanence and an alpha95 <20°. The vector directions were calculated using vector differencing within well...

4D Seismic Bandwidth and Resolution Analysis for Reservoir Fluid-flow Model Applications

Rafael Souza, David Lumley, Jeffrey Shragge, Alessandra Davolio, Denis Schiozer

Petroleum Exploration Society of Australia (PESA)

... extract amplitude maps, A(t0) and A(t1). We then generate 4D amplitude maps by differencing the baseline and the monitor maps, ∆A = A(t1) − A(t0). We...

4D Acquisition Strategies For Australian Reservoir Monitoring Projects

Andrew Long

Petroleum Exploration Society of Australia (PESA)

... important during 40 process ing and differencing. April/May 2006 PESA news...

Genesis 4-D Project Status and Preliminary Lookback

Tom Hudson, Bernard Regel, John Bretches, Pat Condon, James Rickett, Brian Cerney, Phil Inderwiesen, Russ Ewy

GCAGS Transactions

... with more detailed interpretation of differences from horizon-based amplitude extractions. Horizon-based techniques proved reliable but differencing...

4D Finite Difference Forward Modeling within a Redefined Closed-Loop Seismic Reservoir Monitoring Workflow, #41922 (2016).

David Hill, Dominic Lowden, Sonika, Chris Koeninger

Search and Discovery.com

..., they will subtract out during the 4D differencing. Therefore, randomized versions of the basic shot-domain noise models are summed with the time-step...

4-D Seismic: A Powerful New Technology for Monitoring Steam Movements in Duri Field-Central Sumatra

S. D. Jenkins, M. F. Bee, J. H. Lyle, E. Murhantoro

Indonesian Petroleum Association

.../Water Contact) show the spatial distribution of reservoir changes after steam injection. Travel time differencing over the entire reservoir column shows...

Diving wave tomography: Velocity modelling using first arrival traveltime

Amatul Syafi Abdul Basit, Abdul Rahim Md Arshad, Arulini Permalu

Geological Society of Malaysia (GSM)

... by approximating the solution to the eikonal equation at nodal point of each grid in a mesh using Taylor series expansion. Two popular finite-differencing...