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The AAPG/Datapages Combined Publications Database

Showing 20,638 Results. Searched 200,756 documents.

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The impact of organic pores on estimation of overpressure generated by gas generation in organic-rich shale: Example from Devonian Duvernay Shale, Western Canada Sedimentary Basin

Pengwei Wang, Zhuoheng Chen, Kezhen Hu, and Chen Xiao

AAPG Bulletin

... of gamma ray greater than 70 API was applied to the data set to remove sandy and carbonate intervals. The matrix porosity trend with depth (a normal...

2023

Improved TOC and Lithology Prediction for Wolfcamp Shales Using AVO Attribute Analysis

Jaewook Lee, Un Young Lim, David Lumley

Unconventional Resources Technology Conference (URTEC)

... data by using the exact Zoeppritz AVO equation. First, we conduct statistical analyses of three Wolfcamp well logs to derive relationships between...

2020

Mitigation of the 3D Cross-Line Acquisition Footprint Using Separated Wavefield Imaging of Dual-Sensor Streamer Seismic Data … A First Example from Malaysia

Mazin Farouki, Andrew Long, Richard Jones, Yee Ah Chim, Magdalene Tang, Hui LeGleut, Shaoping Lu, Dan Whitmore, Adam Betteridge

Indonesian Petroleum Association

... al., 2007). Whitmore et al. (2010) published an approach whereby one-way wave equation pre-stack depth migration (PSDM) is reconfigured to use up...

2013

Seismic Reflections from a Lau Basin Magma Chamber

Janet L. Morton, Norman H. Sleep

Circum Pacific Council Publications

.... Depth migration is highly dependent on the input velocity model. As noted earlier, the interval velocity estimate of 4.8 km/s may be slightly too...

1985

The Geophysical Aspects of Abnormal Fluid Pressures

Edward B. Reynolds, John E. May, Alf Klaveness

Houston Geological Society

... are being processed to generate plots of interval velocity versus depth which grossly approximate velocity surveys or integrated acoustic logs. Lower...

1971

Utilizing Geochemical, Petrophysical, and Geomechanical Analysis to Optimize Stimulation Design in Pimienta Formation

Douglas J. Betancourt, Claudio Rabe, Omer Iqbal, Jesus P. Salazar, Besmir Hoxha

Unconventional Resources Technology Conference (URTEC)

... a suitable hydraulic fracturing design. The reservoir characterization included lithofacies and pore classification using X-ray Diffraction, Scanning...

2023

The plug drum effect, or why your microseismic events may not be where you think they are

Guillaume Bergery, Zhishuai Zhang, Jing Du, D. Diller, T. Shuck, B. Fish

Unconventional Resources Technology Conference (URTEC)

... assumption of the unknown event is due to the reflection from the lower high velocity layer around -2300 m. Figure 6: Ray tracing arrival times...

2017

Joint Anisotropic Parameter Inversion Based on Nonhyperbolic Moveout and Azimuthal Amplitude Variance

Fangyu Li, Jie Qi, Bin Lyu, Kurt J. Marfurt

Unconventional Resources Technology Conference (URTEC)

...  , (7) where, Vnmo is the NMO velocity, and V0 is the velocity of the seismic wave traveling vertically; is the azimuthal angle between seismic ray...

2016

2D isotropic and vertical transversely isotropic RTM using SEG Hess VTI Model

Richa Rastogi, Abhishek Srivastava, Monika Gawade, Nithu Mangalath, Laxmaiah Bathula, Bhushan Mahajan, Suhas Phadke

International Meeting for Applied Geoscience and Energy (IMAGE)

... is acoustic velocity, p is acoustic pressure, t is time, U is dimensional parameter and us is shot location. Equation (1) is implemented using...

2022

Least-squares reverse time migration of seismic source coding based on Shearlet transform

Yingkaer Nabi, Xiangbo Gong, Zhuo Xu

International Meeting for Applied Geoscience and Energy (IMAGE)

... of the subsurface medium. Migration methods commonly used in industrial processes include Kirchhoff ray migration, one-way wave fluctuation equation...

2022

Wave-equation based inversion for carbonate reservoir characterization in Kuwait

Rao Narhari, Ahmad Al-Sabari, Afrah Al-Ajmi, Justin Ugbo, Jeremy Harris, Gerard Soto, Panos Doulgeris

International Meeting for Applied Geoscience and Energy (IMAGE)

... for linear synthetics and Wave Equation based synthetics. Observe the amplitudes imbalance observed in the linear synthetics with respect...

2024

The Geophysicists' Bane: Multiple Suppression on the North West Shelf

C. R. T. Ramsden, M. R. Hobson, R. Cooper

Petroleum Exploration Society of Australia (PESA)

... lines of equal slowness for all tau to produce each p trace in the transform. For example, a linear event in the space-time (x,t) domain with velocity...

1988

Abstracts: Determining Microseismic Event Locations by Semblance-weighted Stacking; #90173 (2015)

David W. Eaton, Jubran Akram, Andy St-Onge, and Farshid Forouhideh

Search and Discovery.com

... using an efficient ray-bending algorithm that is robust in the presence of large velocity gradients and strong velocity contrasts at layer boundaries...

2015

Magnitude, mechanisms, and prediction of abnormal pore pressure using well data in the Krishna–Godavari Basin, east coast of India

Sumangal Dasgupta, Rima Chatterjee, and Sarada Prasad Mohanty

AAPG Bulletin

.... The equation obtained from the linear-regression equation of the crossplot can be written asThe equation 3 can be rewritten asComparing equations 4 and 5, we...

2016

Estimating Stimulation-Zone Anisotropy Effects During Microseismic Monitoring

Martin Karrenbach, Steve Cole, Victor Yartsev

Unconventional Resources Technology Conference (URTEC)

... shear wave velocity. The values are plotted as a percentage and extend over a considerable area in depth. The geophone array extent in depth...

2015

Large-Scale Pore Pressure Prediction After Pre-Stack Depth Migration in the Caspian Sea (Geophysics Paper 24)

Norbert van de Coevering, Hazim Hameed Al-Dabagh, Liau Min Hoe, Tony Jolly

Geological Society of Malaysia (GSM)

... with a standard Dix conversion. To be consistent with the depth conversion decided upon during the PSDM post-processing phase, this new final interval velocity...

2008

Wave Modeling and Hydrodynamics

J. Ian Collins

Special Publications of SEPM

... is ware namely gT2 L Mathematically continuity 72 I boundary condition w function of depth and period follows 4 T the problem of linear wave...

1987

Abstract: Shallow VSP Survey using a Small Vibrator Source; #90171 (2013)

Joe Wong, Soo K. Miong, Robert R. Stewart, Eric V. Gallant, and Kevin W. Hall

Search and Discovery.com

... velocity of the homogeneous single-layered medium, normal incidence time of reflection, and depth of the receiver respectively. This equation is valid...

2013

Abstract: Digital Log Data to Mechanical Rock Properties for Stimulation Design; #90224 (2015)

E. R. (Ross) Crain and Dorian Holgate

Search and Discovery.com

..., but older data sets usually need adjustment.  An expanded depth plot is useful for this – typically gamma ray is taken as being on depth and the other...

2015

ABSTRACT: Porosity-Velocity Distribution in Stratigraphic Sequences: The Marion-Yin Model; #90013 (2003)

JUAN FLOREZ, GARY MAVKO

Search and Discovery.com

... of transitional facies changes from clean sand to pure clayey shale in the velocity-porosity plane varies from a linear trend at low confining pressure...

2003

Seeing through the Salt

Jerry Kapoor, Nick Moldoveanu, Denes Vigh

GCAGS Transactions

... into the velocity model, iterating to a final detailed model. Figure 2 shows an example of the detail added to the velocity model at a depth of 16,000 ft [5000 m...

2013

Comparison of Petrographic Characteristics of Selected Carbonate Rocks to their Petrophysical Log Response--Smackover Formation (Upper Jurassic)

Alfred A. Biehle , Carey M. Crocker

GCAGS Transactions

... in these zones (Schlumberger, 1979). Gamma Ray Log The Gamma Ray Log is a record measuring natural radioactivity versus depth (Schlumberger, 1972...

1987

Depth conversion and seismic inversion of the Scarborough gas field

Joseph Kremor, Manish Agarwal, Paul Spaans, Ung Sing Wong

Petroleum Exploration Society of Australia (PESA)

... FWI velocity model producing the final well calibrated velocity model. To aid the depth conversion and the reservoir characterisation of the field...

2019

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