An Efficient Approach for Quantifying the Uncertainty in Groundwater-model Predictions

V. A. Kelley, S. Mishra

AAPG Special Volumes

... of a surrogate traveltime measure and to then accurately reproduce the performance-measure statistics with only a few forward simulations...

Structural segmentation in the Qiongdongnan Basin, South China Sea: Insights from analogue models and implications for hydrocarbon exploration

Gengxiong Yang, Hongwei Yin, Jun Gan, Wei Wang, Jitian Zhu, Dong Jia, Xiaofeng Xiong, and Wenqiao Xu

AAPG Bulletin

... of deep preexisting faults. The influences of the initial crustal rheological structure and extensional velocity, which are closely related to depth...

ABSTRACT: An Integrated Approach to Pressure Prediction from 3D Seismic Data, by Mike French and Dr. Nader Dutta; #90913(2000).

Search and Discovery.com

Combination of Seismic Velocity Gradient and Sonic Gradient Variation as a Hydrocarbon Indicator: A Case Study in Clastic Reservoirs in South Sumatra

Iswani Waryono, Wahyu Triyoso

Indonesian Petroleum Association

...Combination of Seismic Velocity Gradient and Sonic Gradient Variation as a Hydrocarbon Indicator: A Case Study in Clastic Reservoirs in South Sumatra...

Growth and demise of a Paleocene isolated carbonate platform, northwest Sirte Basin, Libya: Sequence stratigraphic architecture and controlling factors

Muneer Abdalla, Wan Yang, and Salah Shaniba

AAPG Bulletin

... bounded by unconformable sequence boundaries. Those seismic sequences are ∼450–550 m thick in two-way traveltime and have an aerial extension of at least...

Abstracts: Sonic Scanner Logging at Site C0009 of IODP Expedition 319, NanTroSEIZE; #90173 (2015)

Hisao Ito

Search and Discovery.com

... S wave anisotropy. Dispersion analysis was applied to find that stress induced anisotropy is dominant for almost entire depth interval. We also found...

Two-dimensional seismic refraction tomography of a buried bedrock valley at Hallsands beach, Devon, United Kingdom

Eric B. Avalos, David H. Malone, Eric W. Peterson, William P. Anderson, and Roland W. Gehrels

Environmental Geosciences (DEG)

.../s (6900-ft/s) velocity contour, which shows bedrock depth at approximately −1-m (3-ft) elevation. This correlates with bedrock located in core 8...

Characteristics of Deep Bahama Channels in Relation to Hydrocarbon Potential: GEOLOGIC NOTES

Henry T. Mullins , George W. Lynts , A. Conrad Neumann , Mahlon M. Balls

AAPG Bulletin

... erosional unconformity. Seconds of two-way acoustic traveltime are marked on left; water depth in meters on right. Profile was obtained using 10-cu in. (164...

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

... in both density and velocity. Figure 14-2-9. Comparison of sonic traveltime logs (above) and density logs (below) from preburn well W306 and postburn...

Abstracts: Synthetic Microseismic Files; #90173 (2015)

J. Wong, P. M. Manning, L. Han, and J. B. Bancroft

Search and Discovery.com

... for finite difference modeling of microseismograms. A microseismic source is located at x = 0 m and depth of 2130 m in the low-velocity layer; (b...

An Integrated Geophysical Analysis of Crustal Structure in the Wichita Uplift Region of Southern Oklahoma

Amanda Rondot Buckey

Oklahoma City Geological Society

.... Zelt, C.A.; and Smith, R.B., 1992, Seismic traveltime inversion of 2-D crustal velocity structure: Geophysics Journal International, v. 108, p. 16–34...

From trash to treasure: Three-dimensional basement imaging with “excess” data from oil and gas explorations

Doyeon Kim, and Larry D. Brown

AAPG Bulletin

..., laccoliths, etc.; Figure 6C). The circular feature in Figure 7 exhibits a successively decreasing radius with increasing traveltime (depth) that implies...

The Global Offset Seismic Approach: Improving Seismic Imaging In Complex Geological Settings

Paolo Dell'Aversana

Petroleum Exploration Society of Australia (PESA)

... as a valid support for static corrections, velocity analysis and migration. Pre-stack depth migration (PSDM) The CMP gathers were used as an input for a PSDM...

Developing a robust geologic conceptual model using pseudo 3-D P-wave seismic reflection data

Adrian D. Addison, Michael G. Waddell, Camelia C. Knapp, Duke T. Brantley, John M. Shafer

Environmental Geosciences (DEG)

... seismic profiling (VSP) data allowed the seismic data to be inverted from two-way traveltime to depth, thereby facilitating full integration...

Abstract: Computing Gridded Traveltimes from the Random Locations of Three Known Points; #90211 (2015)

John Bancroft and Xiang Du

Search and Discovery.com

... [email protected] and Xiang Du University of Calgary, Calgary, Alberta, Canada Abstract Gridded traveltimes are an integral part of Kirc hhoff depth...

S-wave velocity model building using PP-PS tomography with dynamic warping

Terence Krishnasamy, Ronaldo Florendo, Aravind Nangarla, Carsten Udengaard, Prajnajyoti Mazumdar, Kevin Searles, Bjorn Olofsson, James Gaiser

International Meeting for Applied Geoscience and Energy (IMAGE)

... velocity model for an existing deep-water ocean-bottom node (OBN) survey in the Gulf of Mexico. Introduction The water depth in the study area ranges...

New Insights into the Deep-Water Otway Basin - Part 1. Integrated Depth Imaging Workflows Unravelling the Subsurface

Si Ying Lee, Bee Jik Lim, Arwindran Anantan, Alexander Karvelas

Australian Petroleum Production & Exploration Association (APPEA) Journal

... velocity variations of the major geological units whilst maintaining the depth consistency at the intersection location of all the 2D lines in both dip...

All that wobbles isnt necessarily azimuthal anisotropy

Helen Debenham, Jennifer Badry, Mohamed Megebry

Petroleum Exploration Society of Australia (PESA)

... rather than the depth of present-day burial. Hence there can be large velocity contrasts across these faults. Figure 4 shows the two-way-time (TWT...

Geometric and seismic interpretation of the Perdido fold belt: Northwestern deep-water Gulf of Mexico

Rion H. Camerlo, Edward F. Benson

AAPG Bulletin

... in 1996. Data quality significantly improved by the late 1990s, especially the imaging and recording of data to much greater depth (traveltime...

Chapter Thirteen: 4-D Reservoir Monitoring

Alistair R. Brown

AAPG Special Volumes

... then differenced and these difference volumes sliced. One such velocity difference depth slice is shown in Figure 13-8, demonstrating in color the effect...

Structural Features of the Crystalline Basement of the Volgograd Area on the Volga in Connection with Evaluation of the Oil-Gas Prospects of the Devonian Clastics

O. D. Kazantsev, V. N. Khlystova, L. M. Naydis

Petroleum Geology: A Digest of Russian Literature

... basement and constructed from linear traveltime curves: a-surface of the basement of Proterozoic age (provisional); b-surface of the basement of Archean...

Pre- and Post-Injection Vertical Seismic Profiling over the Southwest Regional Partnerships Phase II Fruitland Coal CO2 Pilot; #80104 (2010)

Tom Wilson, Les Nutt, Ric Smith, Jitendra Gulati, Marcia Coueslan, Dwight Peters, Art Wells, Craig Hartline, George Koperna, Bill Akwari

Search and Discovery.com

... is complex and reflection discontinuity common. An isopach of the Fruitland sequence (D) reveals considerable variation in traveltime through the Fruitland...

Seismic expressions of a Miocene prograding carbonate margin, Mut Basin, Turkey

Xavier Janson, Gregor P. Eberli, Florence Bonnaffe, Fabrice Gaumet, Vincent De Casanove

AAPG Bulletin

... for building the ray-tracing impedance model (Figure 7).Figure 7. Velocity model in depth used for ray-tracing methods. This section follows the projection...

Time-Lapse Refraction Seismic II: Field Examples

Martin Landrø, Lasse Amundsen

GEO ExPro Magazine

... phase changes between frozen and unfrozen material over time. A significant limitation is the low penetration depth due to strong velocity contrasts...

Shallow Velocity Model Building Considerations for Prestack Depth Migration in Unconventionals

Mike Perz, Josef Heim, Candace Bruins

Unconventional Resources Technology Conference (URTEC)

...Shallow Velocity Model Building Considerations for Prestack Depth Migration in Unconventionals Mike Perz, Josef Heim, Candace Bruins URTeC: 399...