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The AAPG/Datapages Combined Publications Database

Showing 17,263 Results. Searched 200,293 documents.

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Net Benefit of Well Purging Reevaluated

Paul D. Lundegard, Ken Williams, Anthony Martinez, Seth Daugherty

Environmental Geosciences (DEG)

... several casing volumes of groundwater from monitoring wells before sampling (i.e., purging) has long been standard operating procedure...

1997

Research Methods Papers A Monolith Sampler for Saltmarsh Sediments

Jannine Stoodley

Journal of Sedimentary Research (SEPM)

... for sequentially sampling unconsolidated cohesive sediments on exposed salt-marsh and river cliffs: Sedimentary Geology, v. 61, p. 151-154. ALLEN, J.R.L....

1998

An anti-aliasing plane wave decomposition method based on local linear Radon transform

Jian Xiang, Huazhong Wang, Bo Feng, Chengliang Wu

International Meeting for Applied Geoscience and Energy (IMAGE)

... are discrete samples of wavefields, excessive spatial sampling intervals can lead to aliasing noise in the PWD results obtained by conventional LRT...

2024

Assessing spatial uncertainty in reservoir characterization for carbon sequestration planning using public well-log data: A case study

Erik R. Venteris, Kristin M. Carter

Environmental Geosciences (DEG)

... of the semivariance with spatial structure) to the nugget effect (part without spatial structure because of spatial variation below the sampling distance...

2009

Application of Geostatistical Estimation and Simulation to Petroleum Geology

John Vann

Petroleum Exploration Society of Australia (PESA)

..., Vertical etc.). The comparative contributions of the structured (or regionalised) and chaotic (or nugget) components to spatial variability can...

1994

Integrated Reservoir Characterization and Modeling of the Umm Gudair Minagish Oolite Reservoir, Kuwait; #41751 (2015)

Nasser Al-Khalifa, Asmaa Al-Blooshi, Zee Ma, William Clark, Jason Sitchler, Gennady Makarychev, Gary Forrest, Kelsey Schiltz

Search and Discovery.com

... of each lithofacies. When there is no preferential sampling, the lithofacies model honors the global frequencies of the lithofacies data from the well...

2015

High Resolution Characterization of Reservoir Heterogeneity with Cross-well Seismic Data … A Feasibility Study, #41591 (2015).

Brad Bonnell, Chuck Hurich, Rudi Meyer

Search and Discovery.com

... vertically and spatially. Large areas are surveyed in 2-D or 3-D with a spatial sampling normally around 10 – 30 m (depending on acquisition geometry...

2015

Migration Velocity Analysis by Migration of Velocity Spectra

Craig J. Beasley, Rolf Klotz

Southeast Asia Petroleum Exploration Society (SEAPEX)

..., the velocity estimate is positioned at an unmigrated location and should be moved to the correct temporal and spatial location prior to use as a migration...

1992

Subsurface Parameter Uncertainty: A Structured Approach; #41071 (2012)

Arnout Everts, Laurent Alessio, Peter Friedinger, and Faeez Rahmat

Search and Discovery.com

... fit to well data, in combination with transforms to reflect of spatial trends e.g., facies conditioning, depth trends or seismic inversion-based...

2012

Optimizing Completion Designs for the East Texas Haynesville Utilizing Production Flow Allocations From Lower-Cost Fiber Optic Sensing DAS/DTS Systems

M. Weber, D. Weatherly, V. Mahue, R. A. Hull, K. Trujillo, R. Bohn, E. Jimenez

Unconventional Resources Technology Conference (URTEC)

... need reviewed. For example, 1.) spatial sampling locations, 2.) spatial sampling interval, and 3.) gauge length need reviewed because...

2021

Abstract: Petrographic Identification of Contaminant Particles in Soil around a Coal-Fired Thermal Power Plant (Sines, Portugal)

Joana Ribeiro, Mónica Ribeiro, José Erbolato Filho

The Society for Organic Petrology (TSOP)

... and spatially limited place. Further work should include the expansion of the soil sampling grid (either in depth and laterally) to define the spatial extent...

2023

Abstract: Field Investigation of E. Coli Contamination of a Shallow Vulnerable Aquifer, Abbotsford, British Columbia; #90172 (2014)

Andrea Mellor, Edwin Cey

Search and Discovery.com

... application of manure. The main goal of this field study was to investigate temporal and spatial patterns of bacterial loading to the Abbotsford aquifer...

2014

Abstract: Processing Challenges and Technologies of Ocean Bottom Node Survey; #90319 (2018)

Ahmed A. Alghamdi, Huang Mingzhong, Saud Aldeghaither, Constantinos Tsingas, Mamadou S. Diallo, Bader Alqarni

Search and Discovery.com

... and land nodes on islands. The spatial sampling of receivers is sparse whereas the source sampling is much finer and distributed on a regular grid...

2018

Abstract: 3D Geological Modeling and Uncertainty Analysis of Pilot Pad in the Long Lake Field with Lean Zone and Shale Layer; #90224 (2015)

Jinze Xu, Zhangxin Chen, and Ran Li

Search and Discovery.com

... parts of the McMurray Formation in the Long Lake field. Thus, applying SAGD in this lease is a challenge. To understand the spatial distribution...

2015

The Use of the Environmental Isotope Caesium-137 as a Tracer for Soil Erosion Study

Mohd Tadza Abdul Rahman, Daud Mohamad, Zainudin Othman, Abdul Rahim Samsudin

Geological Society of Malaysia (GSM)

... of the resultant soil loss data, which frequently provide little or no indication of the spatial patterns involved. Because of these limitations...

1999

A Critique of the "McLaren Method" for Defining Sediment Transport Paths: DISCUSSION

Shu Gao, Michael Collins

Journal of Sedimentary Research (SEPM)

... to spatial changes in the mean grain size, µ, the sorting coefficient, 2, and the skewness, Sk, of the distribution. As shown on Figure 1, for sampling...

1991

Coupling Spatial and Frequency Uncertainty Analyses in Reservoir Modeling: Example of Judy Creek Reef Complex in Swan Hills, Alberta, Canada

Y. Zee Ma, Andrew Seto, Ernest Gomez

AAPG Special Volumes

...Coupling Spatial and Frequency Uncertainty Analyses in Reservoir Modeling: Example of Judy Creek Reef Complex in Swan Hills, Alberta, Canada Y. Zee...

2011

Abstract: Artifact-Free Population of Geologic Models from Seismic Inversions; #90172 (2014)

John V. Pendrel, Sumon Bhattacharyya, David Fowler

Search and Discovery.com

... information gives the result in the middle panel. Although the spatial sampling in the geologic model is coarser laterally, we suggest that the indications...

2014

Modeling 3D Fracture Network in Carbonate NFR: Contribution from an Analogue Dataset, the Cante Perdrix Quarry, Calvisson, SE France; #120052 (2012)

B. D. M. Gauthier, K. Bisdom, and G. Bertotti

Search and Discovery.com

... are observed: N130 (Set 1) and N045 (Set 2). Due to the preferential orientations of the sampling quarry walls, Set 1 is under sampled compared to Set 2. Set...

2012

-- no title --

Search and Discovery.com

... Sampling Errors Data Variability Decision Errors Non-uniformity within the sample container Contamination is heterogeneous at the same spatial scale...

Unknown

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