Geophysical characterization of a nonaqueous-phase liquidcontaminated site

Alberto Godio, Alessandro Arato, Stefano Stocco

Environmental Geosciences (DEG)

..., and hydraulic conductivity). We also wanted to assess the effect of the water table fluctuations on the interaction between the groundwater and the residual...

Recent Experiences with Seismic Imaging and Velocity Analysis: Abstract

John L. Toldi, Nathaniel G. Tilander

Indonesian Petroleum Association

... (e.g. trying to resolve the possible separation of beds along a minor fault). Thus, although no single effect (such as lateral velocity gradients...

In situ stress state in the petroliferous Barmer Basin, northwestern India: A new geomechanical approach

Premanand Mishra, G. Karthikeyan, Sabyasachi Dash, Shubhodip Konar, Ajoy K. Bora, Utpalendu Kuila, Dilip K. Mukhopadhyay, and Mark D. Zoback

AAPG Bulletin

... aftershock data, and structural fieldwork data. Vertical stress (Sv), pore pressure (Pp), and minimum horizontal stress (Shmin) were estimated from...

Subseismic Fault Identification Using the Fault Likelihood Attribute: Application to Geosteering in the DJ Basin

Ron Harris, Kyle Bracken, Bill Miller, Steve Angelovich, Thomas O'Toole

Unconventional Resources Technology Conference (URTEC)

... and throws provided from multiple horizontal wells in the DJ Basin, this paper demonstrates the fault likelihood attribute (Hale, 2013) can resolve fault...

Understanding Azimuthal P-Wave Anisotropy through Multiple Vendor and Attribute Comparisons

Jamie Rich, Breanne Kennedy, Marianne Rauch-Davies

Unconventional Resources Technology Conference (URTEC)

... (Vnmo) are commonly observed in modern 3D seismic surveys. In many cases this effect is visible on azimuthal gathers and correcting for it becomes...

The Value of Building a Multiscale, Regional Geomodel for Reserves Assessment of the Midland Basin

Robin Dommisse, Livia Sivila, Frank Male, H. Scott Hamlin

Unconventional Resources Technology Conference (URTEC)

... 1500 correlated wells, 700 wells with petrophysical and facies interpretations and approximately 6000 horizontal production wells with decline curve...

Seepage pathway assessment for natural gas to shallow groundwater during well stimulation, in production, and after abandonment

Maurice Dusseault and Richard Jackson

Environmental Geosciences (DEG)

... producing well exploiting the same formation as a new shale-gas horizontal well, the effect of stress depletion associated with its pressure depletion...

Chapter 8: Petrophysical Characteristics of the Ivie Creek Case-Study Area - Geological and Petrophysical Characterization of the Ferron Sandstone for 3-D Simulation of a Fluvial-Deltaic Reservoir (MP-02-6)

R.D. Jarrard, M.A. Chan, C.B. Forster, S.H. Snelgrove

Utah Geological Survey

... of dynamic elastic moduli. In the Gassmann (1951) model, velocity is affected by porosity both explicitly and through the effect of porosity on shear...

Interpreting the Direction of the Gravity Gradient Tensor Eigenvectors: The Main Tidal Force and its Relation to the Curvature Parameters of the Equipotential Surface

Carlos Cevallos

Petroleum Exploration Society of Australia (PESA)

... the lateral behaviour (horizontal gradient) and the value of the plunge of the main tidal force. For example, for isolated bodies with a positive density...

Water Expulsion from Clastic Sediments during Compaction--Directions and Volumes

Kinji Magara

AAPG Bulletin

... the same vertical excess-pressure gradient, will exist throughout. That is, there will be no horizontal water-pressure gradient or horizontal water...

Abstract: Re-establishment of Gradient in Frequency-domain Elastic Waveform Inversion; #90174 (2014)

Ju-Won Oh, Dong-Joo Min, and Felix J. Herrmann

Search and Discovery.com

...Abstract: Re-establishment of Gradient in Frequency-domain Elastic Waveform Inversion; #90174 (2014) Ju-Won Oh, Dong-Joo Min, and Felix J. Herrmann...

Regionally Interpolated Pore Pressure Model Utilizing Multiple Empirical Methods in the Delaware Basin

Yamin Li, Jon Roberts

Unconventional Resources Technology Conference (URTEC)

... pore pressure gradient is equal to hydrostatic pressure gradient. This gradient is dependent on formation fluid salinity and typically ranges between...

The Effects of Grain-Density Variation on Turbidity Currents and Some Implications for the Deposition of Carbonate Turbidites

James M. Hodson, Jan Alexander

Journal of Sedimentary Research (SEPM)

... and Church (2004) are shown in Figure 10. This illustrates that although grain size has a bigger influence on settling velocity, the effect of grain...

Simulation of Polymer Flow in Fracture Networks Using Lattice Boltzmann Method

Rijal Ziya Ulhag, M. Aufaristama, Irwan Ary D

Indonesian Petroleum Association

... fracture, H = 0.8: (a), = 15; (c) (c) = 10; (b) Figure 8 – Effect of graphic roughness on permeability. Figure 9 - Velocity contours...

Feasibility Study of Underbalanced Drilling Fluid Design in Depleted Reservoir: Case Study Field X, Indonesia

Irfan Hariz, Bonar Tua Halomoan Marbun

Indonesian Petroleum Association

... uniform production from the target interval. Horizontal wells Underbalanced drilling can keep formation impairment to a minimum because drilling...

Sedimentary Processes, Vertical Stratification Sequences, and Geomorphology of the Roaring River Alluvial Fan, Rocky Mountain National Park, Colorado

Terence C. Blair

Journal of Sedimentary Research (SEPM)

... and deposited where flood velocity locally decreased due to destruction of antidunes, increased roughness, or flow separation around the low-amplitude gravel...

Abstract: Velocity Model Building in the Gulf of Mexico--An Old Story With a New Twist, by M. Witcombe; #90981 (1994).

Search and Discovery.com

Seismic Models and Interpretation of The Casper Arch Thrust: Application to Rocky Mountain Foreland Structure

Riley C. Skeen, R. Randy Ray

Rocky Mountain Association of Geologists

... interpretation. The dominant effect is the large seismic time pull up created by the overthrusting of high-velocity Precambrian rocks. The pull-up effect can both...

Analysis of global navigation satellite system data along the Southern Gas Corridor and estimate of the expected displacements

Giuliana Rossi, Riccardo Caputo, David Zuliani, Paolo Fabris, Massimiliano Maggini, and Panagiotis Karvelis

Environmental Geosciences (DEG)

...). In contrast, the central-eastern sector is affected by a southward positive velocity gradient progressively increasing from 4 to 8 mm/yr (0.2–0.3...

A method for surface wave suppression based on multimodal constraints neural networks

Yixuan Yan, Mengxiu Wang, Dong Cui, Chunming Wang, Sian Hou

International Meeting for Applied Geoscience and Energy (IMAGE)

... the vanishing gradient problem in deep neural network training and improving the training effect. The network utilizes LPLoss as the loss function for error...

Abstract: Seismic Evidence of Formation Damage in the Lower Colorado Group Shales; #90172 (2014)

Jeremy Gallop

Search and Discovery.com

... weakness of 0.1 and a tangential weakness of 0.75 and plot the compressional and shear velocity surfaces if the fractures are horizontal (TI medium...

Fracture Identification and Evaluation Using S Waves, by Bob Hardage, #40792 (2011).

Search and Discovery.com

Velocity-depth trends in Mesozoic and Cenozoic sediments from the Norwegian Shelf: Reply

Vidar Storvoll, Knut Bjrlykke, Nazmul H. Mondol

AAPG Bulletin

... that averaged velocity-depth trends in some basins may be rather similar, but the scatter in each basin reflects the effect of different mineralogies...

Shape Sorting During Wind Transport of Quartz Silt Grains: DISCUSSION

Kenneth Pye

Journal of Sedimentary Research (SEPM)

... velocity. The experimental evidence has clearly demonstrated that variations in gross particle form have a more significant effect than grain...

Possible Causes of Velocity Mis-Ties

R. A. Broding

Oklahoma City Geological Society

...). Consideration has been given to effect of temperature, since the temperature gradient surrounding a new well is quite different from the normal earth's...