Finite Difference Modeling: Part II: How to clean numeric time dispersion

Lasse Amundsen, Ørjan Pedersen, Martin Landrø

GEO ExPro Magazine

... in of the subsurface. The finite difference (FD) approximation gives us step two.” another partial differential equation – the one that we are actually solving...

Approximation of Geothermal Gradients in Northern West Virginia Using Bottom-Hole Temperatures from Electric Logs: GEOLOGIC NOTES

T. W. Grisafi , H. H. Rieke, III , D. R. Skidmore

AAPG Bulletin

...Approximation of Geothermal Gradients in Northern West Virginia Using Bottom-Hole Temperatures from Electric Logs: GEOLOGIC NOTES T. W. Grisafi , H...

The TsunamiŽ Survey Offshore Sumatra, a Cooperative Geo-Technical Project for Deep Crustal Study WesternGeco/Schlumberger/CNRS-IPG Paris/BPPT

Soelistijani M, Martin Bayly, Tim Bunting, Satish C. Singh

Indonesian Petroleum Association

... PETROLEUM ASSOCIATION Thirty-Second Annual Convention & Exhibition, May 2008 THE “TSUNAMI” SURVEY OFFSHORE SUMATRA A COOPERATIVE GEO-TECHNICAL PROJECT...

Structural Significance and Analysis of Mid-Continent Gravity High

Richard L. Coons , George P. Woollard , Garland Hershey

AAPG Bulletin

... has been measured. The problem is to obtain an approximation to g(x,y) from the observed values gi(xi,yi) at discrete points i for the N number...

Velocity Analyses of Near Seafloor Strata Based on Multichannel Seismic Data from the Tonga Platform

Jeffrey E. Cole, Dennis M. Mann

Circum Pacific Council Publications

... proper processing procedures. The first used the velocity inversion that was apparent in much of the data. The second model treated the inversion...

Abstract: Converted Wave Receiver Statics from First Break Mode Conversions; #90171 (2013)

Kristof De Meersman and Marcelo Roizman

Search and Discovery.com

..., the conversion occurs at the base of, or at some internal interface within, the weathered zone. Second, we can assume near-vertical rays so...

Abstract: Converted Wave Receiver Statics from First Break Mode Conversions; #90171 (2013)

Kristof De Meersman and Marcelo Roizman

Search and Discovery.com

..., the conversion occurs at the base of, or at some internal interface within, the weathered zone. Second, we can assume near-vertical rays so...

Estimating Seismic Anisotropy Parameters from Rock Properties in Wolfcamp Shales, Midland Basin

Jaewook Lee, David Lumley

Unconventional Resources Technology Conference (URTEC)

... the statistical relationships between the three rock properties and various independent elastic stiffness coefficients. Second, we perform both linear...

ABSTRACT: Three-Dimensional Forward Modeling of Closure on Normal Faults, by John H. Spang; #91020 (1995).

Search and Discovery.com

Abstract: Interferometric Assessment of Clamping Quality of Borehole Geophones; #90224 (2015)

Yoones Vaezi and Mirko van der Baan

Search and Discovery.com

... shorter offsets; second the levels of surface waves, which can mask weaker and distant microseismic events, are considerably lower in deeper zones...

Lithology and Fluid Seismic Determination for the Acae Area, Puerto Colon Oil Field, Colombia

F. H. Gómez, J. P. Castagna

Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)

... with approximately N-S strike, average dip of 4 degrees and inverse faulted on the east flank that controls the oil accumulation (Figure 1). 00 -95 -9500...

Introduction to Contouring Geological Data with a Computer: Part 8. Integrated Computer Methods

J. L. Gevirtz

AAPG Special Volumes

... variation were prepared by hand. Hand-contoured maps represent a geologist's best approximation of the shape of a surface under investigation. Ideas based...

THE APPLICATION OF HIGH RESOLUTION SEISMOLOGY TO THE DELINEATION OF FAULTING AND COAL SEAM THICKNESS: A CONTINUING CASE HISTORY

Anthony R. Wagner

North Dakota Geological Society

... corrects for minor shallow velocity variations, was completed. Then, a second velocity analysis was added to fine-tune...

Ways for Increasing Effectiveness of Seismic Surveying in Preparing Structures in West Yakutia

V. Ya. Belen’kiy, N. Ya. Kunin

Petroleum Geology: A Digest of Russian Literature

... of distribution of values of mira for wells of the Srednebotuobinsk area (a-First approximation; b-second); Khapchagay area (c). The seismic surveys show...

Test Analysis of a 2D Seismic Survey With Finer CMP Interval

Zhao Xuewu, Widya Putri Pratami, Xu Qingsen, Muchlis MYS, Guo Shanli

Indonesian Petroleum Association

... the LVL, thus not affected basically. Figure 5, a raw record and its linear moveout (LMO) record with velocity 1800m/s, indicates...

Chapter 14 (Case Histories of Three-Dimensional Seismic Surveys)—Case History 2: Three-Dimensional Seismic Monitoring of an Enhanced Oil Recovery Process

Robert J. Greaves, Terrance J. Fulp

AAPG Special Volumes

... a period of 15 months. The first (preburn) survey was recorded several months previous to ignition of the combustion process. The second (midburn...

Application of poststack image enhancement with dip-guided selective stacking in southern Gulf of Mexico

Janet Ravelo-Cervantes, Ricardo Francisco Castrejon-Martinez, Julio Cesar Hernandez-Villalobos, Raul Ysaccis, Said Hernandez-Jaramillo, Doan Saavedra-Castaneda

International Meeting for Applied Geoscience and Energy (IMAGE)

... In this case study we have shown that the proposed modelbased post-stack image conditioning method using DIP Second International Meeting for Applied...

Abstract: Intergration of Borehole Dips and Seismic Data

Peter B. Woodroof

Geological Society of Malaysia (GSM)

.... The second example comes from a deviated well. The fault and structural dip data were seismically-adjusted as in the first example, but were...

Abstract: Evaluation of Reservoir Connectivity Between Gas and Oil Zones for Predicting Down Dip Oil, by Rong Hwang and Stan Teerman; #90082 (2008)

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Structure of the McConnell Thrust Sheet in the Ghost River Area, Alberta

E. L. Fitzgerald

CSPG Bulletin

... of the Rocky Mountains," Geol. Surv., Canada, Ann. Rept. 2, 1886, pt. D. McKinstry, H. E., 1953, "Shears of the Second Order," Amer. Jour. Sci., Vol. 251...

Gulf Coast Logging

Gunnar J. Teilmann, Robert E. Murphy

New Orleans Geological Society

... zone is usually close to the borehole. Therefore, the SFL* response is, in most cases, largely from the transition zone and only an approximation...

Slide Rule Seismic Computations

Robert H. Mansfield

Oklahoma City Geological Society

... and the resulting move-out correction. Around the edge is the second part of the dip projection slide rule. Figure 8 shows the complete dip, "normal...

New Geostatistical Method for Mapping Faults with Well Logs

An-Ping Yang

Indonesian Petroleum Association

... which run parallel to the dip direction. The second solution is to search different directions and use the largest displacement. This approach is more...

Relations Between Cross-Bedding, Bedforms, and Flow

David M. Rubin

Special Publications of SEPM

... twodimensional bedforms are readily recognizable because their cross-beds dip toward the same direction (dispersion of dip directions is low), dispersion...

Chapter 3: Preparation of Seismic Data for Stratigraphic Work

Tom Wittick

North Texas Geological Society

... is that the data available are not in the proper location. There is a second reason which should motivate us to shoot new data and that is the data...