Petrophysics and Pore Pressure: Pitfalls and Perfection; #40654 (2010)

Andrew Buffin

Search and Discovery.com

..., 1974, Formation velocity and density—the diagnostic basics for stratigraphic traps: Geophysics, v. 39, p. 770–780. Greenberg, M.L., and J.P. Castagna...

Quantifying the Benefit from Pressure Gradient Data in Wavefield Reconstruction for Time-Lapse Seismic, #40843 (2011)

Phil Christie, Kurt Eggenberger, Everhard Muyzert, Massimiliano Vassallo, Ali Özbek

Search and Discovery.com

... velocity data. It can be shown that the particle velocity vector is intimately related to the pressure gradient vector. If we could acquire the horizontal...

Uncertainty in Surface Microseismic Monitoring; #41258 (2013)

Mike Mueller, Michael Thornton, and Leo Eisner

Search and Discovery.com

... the sensitivity to velocity model assumptions. Furthermore, these arrays are well disposed for permanent monitoring of multiple wells. The primary...

Seismic Processing Applications on a Personal Computer

Geophysical Service (Malaysia) Sdn. Bhd.

Geological Society of Malaysia (GSM)

... now be performed on a PC workstation include refraction modelling, vertical seismic profiling (VSP) and velocity modelling for CDP stacking. Before we...

Permian glacial paleo-valley identification and characterization using geometrical attributes and 2D forward modelling

Leticia Itzel Flores-Sanchez, Michael LeStrat, Robert H. Richards

International Meeting for Applied Geoscience and Energy (IMAGE)

... Sandstone of variable thickness with a low GR and high velocities, abruptly overlying a Silurian Shale of higher gamma and lower velocities, before...

A 3D immersed boundary method for acoustic wavefield simulation with irregular surface topography

Xiang Li, Ziduo Hu, Yancan Tian, Wei Liu, Zhonghua Xu, Gang Yao

International Meeting for Applied Geoscience and Energy (IMAGE)

... the pressure field, 𝑣 stands for velocity, 𝜌 indicates density, 𝑠 𝑡 denotes the source signature, and 𝛿 𝐱 𝐱 represents the Dirichlet delta...

ABSTRACT: Ultra-High Resolution 3-D Characterization of Deep-Water Deposits-I: A New Approach to Understanding the Stratigraphic Evolution of Intra-Slope Depositional Systems; #90013 (2003)

R. T. BEAUBOUEF, V. ABREU, N. L. ADAIR

Search and Discovery.com

... are of variable size and thickness and consist of small-scale, fan-like bodies (fans within fans). Preliminary Numerical Modeling Results The three...

Characterizing the Near Surface with VSP and Well Logs

Search and Discovery.com

...-calibrated P-wave sonic velocity (light green) and calibrated sonic traveltime (blue) in the field recording time. Synthetic Modelling A synthetic...

The development of seismic reflection sandbox modeling

Donald H. Sherlock, Brian J. Evans

AAPG Bulletin

...., 1976, Effect of brine-gas mixture on velocity in an unconsolidated sand reservoir: Geophysics, v. 41, p. 882-894. Gartrell, A. P., 1997, Evolution...

Experiments on Oscillatory-Flow and Combined-Flow Bed Forms: Implications for Interpreting Parts of the Shallow-Marine Sedimentary Record

Simone Dumas, R.W.C. Arnott, John B. Southard

Journal of Sedimentary Research (SEPM)

...: Journal of Sedimentary Petrology, v. 49, p. 287–294. Dott, R.H., Jr., and Bourgeois, J., 1982, Hummocky stratification: significance of its variable...

Validation of Fracture Height and Density from Rapid Time-Lapse DAS VSP for use in Calculating Stimulated Rock Volume: A Case Study from Hereford Field, Colorado

T. L. Inks, X. Zhao, M. E. Willis, E. Jenner, B. Burke

Unconventional Resources Technology Conference (URTEC)

... referred to as rapid timelapse DAS VSP) data, transformed to an anisotropic seismic velocity model via rock physics relationships, were used to estimate...

The Seismic Exploration of the Mahakam Delta, or "Nine Years Shooting in Rivers, Swamps and Very Shallow Offshore"

Guy Roux

Indonesian Petroleum Association

... an improvement though still quite variable, being dependent on surface shooting conditions. In late 1972 another attempt was made to try to improve...

Distribution of ground motion seismic surface wave of the 2015 shallow strong earthquake at Ranau central zone seismically active region, Sabah, Malaysia

Bailon Golutin

Geological Society of Malaysia (GSM)

... velocity from various sources such as JMG, MET Malaysia and USGS earthquake database related to the strong earthquake that jolted Ranau, Sabah on 5...

Broad Top Thrust Sheet: An Extensive Blind Thrust in the Central Appalachians (1)

Thomas H. Wilson and Robert C. Shumaker

AAPG Bulletin

... of the structural front. Structures produced by variable tectonic thinning in the inter-sheet detachment zone may also produce additional traps within...

Population Breaks in Grain-Size Distributions of Sand--A Theoretical Model

Kweku-Mensah O. Sagoe, Glenn S. Visher

Journal of Sedimentary Research (SEPM)

... (Eq. 1). Depth also controls vertical velocity distribution in a fluid, hence, is a variable in vertical distributions of shear and suspended sediment...

Finite-difference wavefield propagation using superstepping

T. Nemeth, K. Nihei, A. Loddoch, A. Sekar, K. Bube, J. Washbourne, L. Decker, S Kaplan, Ch. Wu, A. Shabelansky, O. Cristea, Z. Yin

International Meeting for Applied Geoscience and Energy (IMAGE)

... with the combination of material properties (such as velocity or density) in a pattern described by the FD kernel. The accuracy, stability...

Synthetic Seismic Validation of Reservoir Models of the Carbonate Gas Fields in Offshore Sarawak, Malaysia; #41087 (2012)

Alexander David Kayes

Search and Discovery.com

.../DEVELOPMENT UNCERTAINTIES: Porosity Distribution (Horizontal/Vertical). Water Breakthrough Timing/Aquifer Behavior. Karstification. Variable seismic data...

Porosity Reduction in Sandstone by Quartz Overgrowth

Frederic Leder, Won C. Park

AAPG Bulletin

..., sandstone sorting, grain size, and burial histories are assumed to be known. The model is developed in two stages. The first stage results in a velocity...

Estimating Limestone Dissolution Rates in the Kinta and Lenggong Valleys Using the Micro Erosion Meter: A Preliminary Study

Ros Fatihah Muhammad, Yeap Ee Beng

Geological Society of Malaysia (GSM)

..., the last measurements were taken after 5 to 14 months in the field. The results obtained showed that the rates for each tablet are highly variable...

Analysis of Geophysical Well Logs from the Mariano Lake-Lake Valley Drilling Project, San Juan Basin, Northwestern New Mexico

James H. Scott

AAPG Special Volumes

... logging are presented by George and Scott (1982). Sonic Logs Sonic logs (run in holes 4 and 6 only) include velocity, amplitude, and amplitude ratio...

G. Non-Normal Incidence Reflections and the Determination of Lithology - Use of Shear Waves and Amplitude with Offset

Norman S. Neidell

AAPG Special Volumes

... in the lower material asks particle vibrations appropriate for a velocity of 21,000 ft/sec. Yet the adjacent particles are constrained in another way...

Sediment Volume and Grain-Size Partitioning Between Submarine Channel−Levee Systems and Lobes: An Experimental Study

Jan de Leeuw, Joris T. Eggenhuisen, Yvonne T. Spychala, Maarten S. Heijnen, Florian Pohl, Matthieu J.B. Cartigny

Journal of Sedimentary Research (SEPM)

... with a non-erodible substrate and gradually expanding side walls. An ultrasonic velocity probe (UVP) was used to measure the flow velocity profile...

Technique and Methods of Geophysical Exploration in Canada

A. I. Bogdanov

Petroleum Geology: A Digest of Russian Literature

... to convert to usual seismic sections and structural maps, if the rule of change of average velocity of elastic waves both vertically and horizontally...

Fullband imaging

Zhengmin Zhang, Jiwei Jia, Geping Fu, Hao Zhang, David Chow, Barry Hung, Ian Anstey, Wai Leong Lai

Petroleum Exploration Society of Australia (PESA)

... solutions addressing the ghost issue have been implemented and can be broadly classified into two categories: (a) using variable-depth sources and/or cables...

Productivity prediction from well logs in variable grain size reservoirs, Cretaceous Qishn Clastics, Republic of Yemen

Michael Cheng, Marco Leal, Dave McNaughton

CSPG Special Publications

...Productivity prediction from well logs in variable grain size reservoirs, Cretaceous Qishn Clastics, Republic of Yemen Michael Cheng, Marco Leal...