Seismograph Interpretation as Related to Changes in Sedimentary Section in West Texas and New Mexico

John Daly , C. N. Page

AAPG Bulletin

... in the lowest velocity clastics a two-way travel time of 3/4 second is observed, a 300 per cent change from the minimum. If this range of travel times had...

Mapping Rock-Property Changes and Fluid Migration Due to Hydraulic Fracturing

Jyoti Behura

Unconventional Resources Technology Conference (URTEC)

..., the imaged hypocenters are most likely inaccurate. This is because the imaging is done using a velocity model extracted from traveltime tomography...

2023 Middle East Oil, Gas and Geosciences Show ; - Abstracts, #91204 (2023).

Search and Discovery.com

Structural and Tectonic Evolution of Oceanic Crust within the Jurassic Quiet Zone, Offshore Morocco: Chapter 14: African and Mediterranean Margins

James S. Holik, Philip D. Rabinowitz

AAPG Special Volumes

... used here to evaluate the different provinces is the acceleration factor or the slope of the regression (K). Combining all velocity-traveltime points...

Geophysical Programs for Regonal and Local Prediction of Hydrocarbons in the Near-Ural Region of the West Siberian Platform

Yu. Z. Segal’, N. N. Yaitskiy, L. A. Zerchaninova, V. V. Khoronzhin

Petroleum Geology: A Digest of Russian Literature

... and gas pools, which was inexplicable fully as a direct effect of the presence of the pool. The dimensions of an anomaly approximated the dimensions...

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...

Chapter 8: Evaluation of Anomalous Pressuring and Gas Saturation Using 2-D and 3-D Visualizations of Well Log Information

Zun S. Jiao, Ronald C. Surdam

Montana Geological Society

... on the velocity-depth plot. In order to better isolate the effect of gas saturation and anomalous pressure on the velocity profiles...

Salt-driven evolution of a gas hydrate reservoir in Green Canyon, Gulf of Mexico

Alexey Portnov, Ann E. Cook, Mahdi Heidari, Derek E. Sawyer, Manasij Santra, and Maria Nikolinakou

AAPG Bulletin

... compressional traveltime (Δt = Vp−1, Vp is compressional wave velocity), Δtma is the matrix traveltime, and f is an acoustic formation factor. The β...

Seismic Attenuation Analysis for Reservoir Description

Search and Discovery.com

... is the NMO shift at an offset for an event starting from two8Q way traveltime t 0 at zero-offset. Δt is a function of t 0 , RMS velocity and offset...

erformance of Seismic Arrays in the Presence of Weathering Layer Variations, #41841 (2016).

Jubran Akram, Abdullatif A. Al-Shuhail

Search and Discovery.com

... traveling signal. We investigate the effect of variations in the near-surface layer thickness on the performance of arrays by studying their impulse...

Integrated Rock-Log Calibration in the Elmworth Field - Alberta, Canada: Well Log Analysis Methods and Techniques: Part II

R. W. Hietala, E. T. Connolly

AAPG Special Volumes

... and recorded regardless of zone. This was necessary because input constants and cutoff values usually change with increased control, and having the basic...

Abstract: Migration of Velocity Spectra: An Example from the Philippines

Craig J. Beasley, Rolf Klotz

Geological Society of Malaysia (GSM)

... data is located at an unmigrated position and thus should be repositioned prior to use as a migration velocity. The effect of this phenomenon...

Application of full-waveform inversion to ultra-high-density OBN data at Clair field

Simon Luo, Xukai Shen, Philip Tillotson, Lindsey Smith, Dan Davies

International Meeting for Applied Geoscience and Energy (IMAGE)

... as well as the additional pre-processing steps described above. fixed likely leads to crosstalk in the velocity update. Although this effect can...

Origin of overpressure and pore-pressure prediction in the Baram province, Brunei

Mark R. P. Tingay, Richard R. Hillis, Richard E. Swarbrick, Chris K. Morley, Abdul Razak Damit

AAPG Bulletin

...-vertical effective stress plots. Acoustic traveltime is inversely related to porosity. Hence, sonic velocity-vertical effective stress data can also...

What Can Elasticity Moduli Tell Us About Lithology and Diagenesis?: ABSTRACT

Gildas Omnes

AAPG Bulletin

... of the rigidity which links particles to each other. In the shear waves, displacement occurs without volume change and the velocity is, for a given...

Abstract: Application of Gassmann's Model in Hydrocarbon-Bearing Reservoir Characterisation

Ng Tong San, Leong Lap Sau

Geological Society of Malaysia (GSM)

... CARIGALI SDN BHD KUALA LUMPUR & LEONG LAP SAU UNIVERSITI SAINS MALAYSIA PENANG The effect of gas saturation and resultant decrease in acoustic...

Reply to Stringham's Discussion: DISCUSSION

Louis I. Briggs

Journal of Sedimentary Research (SEPM)

... on pages 651-653 is stated with ambiguity. The point of the discussion in the original paper should be the effect of shape variation alone on size...

Exploration of the North Seribu Area, Northwest Java Sea

Roberto Fainstein

Indonesian Petroleum Association

..., tied fairly well with the velocity log and the VSP (Fig. 7). In the borehole, basement was established at 1680 ms of two-way time. The basement...

Investigation of DMO Algorithms during Test-Line Processing: Some Recommendations

Ng Tong San, Mohd. Hashim Abas, Leong Lap Sau

Geological Society of Malaysia (GSM)

... constrained velocity trend is evident in the velocity spectrum after DMO. Figures 2(g) and 2(h) illustrate this effect and reinforces the stacking...

Abstract: Local Stretch Zeroing NMO Correction; #90174 (2014)

N. Kazemi and H. R. Siahkoohi

Search and Discovery.com

..., Series approximation in Velocity and traveltime computations: Geophys. Prosp., 21, 783-795. Brouwer, J. H., 2002, Improved nmo correction...

Abstract: Thermal and Compositional Structure of the Lithospheric Mantle in the Barents Sea, by Laura Marello; #90177 (2013)

Search and Discovery.com

Application of land multiple numerical simulation identification and well-driven suppression technology in ultra-deep layers of S Basin

Zhang Shurui, Zang Dianguang, Li Guangpeng, Diao Yongbo, Du Jiajun, Liu Shumin

International Meeting for Applied Geoscience and Energy (IMAGE)

... the dilemma that the existing methods are difficult to work because of the minor velocity difference between the internal multiples and the primaries...

Regional exploration of crustal structures from long-offset OBN data by extended-source FWI

Gaoshan Guo, Stéphane Operto

International Meeting for Applied Geoscience and Energy (IMAGE)

..., the predominant approach for determining large-scale crustal structures still relies on traveltime tomography (see Christeson et al. (2014) for a Gulf...

The deblending processing of multi-well 3D DAS-VSP data in the Middle East

Fei Li, Gang Yu, Haibo Liu, Jiawen Song, Yanbin Zhang, Yuanzhong Chen, Tiankui Yin, Jianxin Han, Qingfeng Li

International Meeting for Applied Geoscience and Energy (IMAGE)

...The deblending processing of multi-well 3D DAS-VSP data in the Middle East Fei Li, Gang Yu, Haibo Liu, Jiawen Song, Yanbin Zhang, Yuanzhong Chen...

Imaging Solutions for Geophysical Challenges in South East Asia (Paper A13)

N. El Kady, Z. Mohd Dom, Y. Prasetyo, M. Bayly, G. Nyein, P. Vasilyev, N. Mat Don Ya

Geological Society of Malaysia (GSM)

... anomalies, major faulting and “fault shadow” effect, and seismic velocity anisotropy estimation and implementation. We will address each part...