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The AAPG/Datapages Combined Publications Database

Showing 4,279 Results. Searched 188,834 documents.

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Abstract: High-Accuracy Relative Event Locations using a Combined Multiplet Analysis and the Double-Difference Inversion; #90174 (2014)

Fernando Castellanos and Mirko van der Baan

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...). After calculating crosscorrelation coefficients for all event pairs, we generate an NxN crosscorrelation coefficient upper triangular matrix, where N...


Abstract: Post-processing Technique to Relocate Microseismic Events Using the Double-Difference Method; #90187 (2014)

Fernando Castellanos and Mirko van der Baan

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... beforehand to attenuate noise that might affect crosscorrelation values. After calculating crosscorrelation coefficients for all event pairs, we...


A Simple Autocorrelation Algorithm for Determining Grain Size from Digital Images of Sediment: RESEARCH METHODS PAPERS

David M. Rubin

Journal of Sedimentary Research (SEPM)

... in the denominator (related to the standard deviation) are equal. An autocorrelation curve is determined by calculating r as a function of distance between the two...


Abstract: Application of 2D Crosscorrelation and Radon Transform for Analysis of Double Couple Microseismic Source; #90187 (2014)

Neda Boroumand and Hassan Khaniani

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... by calculating minimum travel-time residual. This method is adopted here and the 2D crosscorrelation and Radon transform are implemented to find...


Abstract: Cable Noise Analysis and Suppression in DAS-VSP Data; #90255 (2017)

Zhidong Cai, Yanhua Wang, Congwei Liu, Qinghong Zhang, Xiaoyin Xu

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... the following: finding the wavelet in each period, calculating these wavelets to normalization wavelets, and then stacking all wavelets to an average...


Cable Noise Analysis and Suppression in DAS-VSP Data, #42052 (2017).

Zhidong Cai, Yanhua Wang, Congwei Liu, Qinghong Zhang, Xiaoyin Xu,

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... trace, wavelet extraction includes the following: finding the wavelet in each period, calculating these wavelets to normalize wavelets, and then stacking...


Abstract: A New Method for Microseismic Event Detection and Automatic Time Picking; #90187 (2014)

Yoones Vaezi and Mirko van der Baan

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...) is dominated by background noise not the events. Therefore, as long as the events’ PSDs are different enough from the total PSD, we can use the crosscorrelation...


Abstract: Migration Velocity Analysis of Incomplete Data Using LSPSM CIGs; #90174 (2014)

Abdolnaser Yousefzadeh, John C. Bancroft, and Gary F. Margrave

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... or irregularly sampled, the LSPSM shot domain CIGs give higher resolution in the unnormalized crosscorrelation panel for choosing the best velocity...


Application of Upscaling Permeability Workflow: Pore to Core Plug Scale on Malay Basin Thin Sections (Paper P6)

L. A. Lubis, Z. Z. Tuan Harith, K. A. Moh Noh, H. Khairy, A. Moh Salih

Geological Society of Malaysia (GSM)

... permeability from pore scale information. Pore scale permeability is calculating on 3D generated porous media using fluid flow simulation. In our work, we...


Abstract: Comparison of Low-Frequency Data from Co-Located Receivers Using Frequency Dependent Least-Squares-Subtraction Scalars; #90172 (2014)

Kevin W. Hall, Gary F. Margrave, Malcolm B. Bertram

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... autocorrelation. In order to investigate amplitude dependence on frequency, data traces were band-pass filtered before calculating the LSSS with a series of 1 Hz...


Investigating the Effect of Salinity on Counter-Current Two-Phase Flow Regimes in Annuli

Benjamin Wu, Mahshid Firouzi, Ayrton S. Ribeiro, Thomas E. Rufford, Brian Towler

Unconventional Resources Technology Conference (URTEC)

... (autocorrelation, power spectral density, Shannon entropy and permutation entropy) and high-speed image analysis were applied to characterize the two-phase...


Kinematics of Sand Avalanches Using Particle-Image Velocimetry

Michael Tischer , Marcus I. Bursik , E. Bruce Pitman

Journal of Sedimentary Research (SEPM)

... at a point by taking an area around that point (reference area) and comparing it to an area in its neighborhood by calculating the autocorrelation...


Time Series Analysis II

Gerard V. Middleton

Special Publications of SEPM

... extremes. There is no theory which indicates exactly what delay should be chosen but two guiding rules have been suggested: Plot the autocorrelation...


Punch-Card Calculations of Detailed Stratigraphic Correlations

Charles W. Oliphant, Paul Fullerton

Tulsa Geological Society

..., the mean pair product, is largest the two rock sections are best matched. By this process we are calculating what mathematicians call an approximate cross...


A New Permeability Prediction Workflow Using 3D Porous Media Reconstruction Method, Case Studies: Malay Basin Thin Sections

Luluan A. Lubis, Zuhar Zahir T. Harith, Khairul Arifin M. Noh, Hilfan Khairy

Indonesian Petroleum Association

... of this method was first employed on sand sediment by Rubin (2004). Rubin (2004) used autocorrelation between two rectangular regions in digital images...


Microseismic Without Dots … Probabilistic Interpretation and Integration of Microseismic Surveys

Ulrich Zimmer

Unconventional Resources Technology Conference (URTEC)

... the crosscorrelation coefficient against the position (Figure 2 right) it shows that the most likely origin would be around 40 m. URTeC 2668390 5 Figure 2...


Computer Mapping: A Review of What is Available and What is Useful for Exploration Purposes

Nigel M. Waters

CSPG Bulletin

... Autocorrelation: London, Pion, 178p. Cubitt, J. M. and Henley, S., 1978, Statistical analysis in geology: Benchmark Papers in Geology, v. 37, Dowden, Hutchison...


Practical Application of Adaptive Least-Squares Reverse Time Migration (LSRTM) to Advance Field Development and Uncover New Reserves in the Subsalt Provinces

Chong Zeng, Shuqian Dong, Zhaohong Wu, Jean Ji, Darrell Armentrout, Bin Wang

GCAGS Transactions

... adaptive correction. The confidence level at each sample point was calculated by a normalized 2D crosscorrelation. We measured the coherence of the warped...


Assessment of a Marcellus Shale Prospect Using Seismic, Microseismic, and Completions Data

Scott Singleton, Mark Suda

GCAGS Transactions

... units, etc. The original Coherence Cube algorithm was defined by Bahorich and Farmer (1995) and consisted of an inline and crossline crosscorrelation...


Forecasting the Domestic Utilization of Natural Gas in Nigeria (2015…2020)

J. J. Adaji, R. U. Onolemhemhen, S. O. Isehunwa, A. Adenikinju

Africa Energy and Technology Conference, 2016

... measure of goodness of fit for a model suitability. 4.4.The F-statistic, Intercept and Autocorrelation result The F-statistic result (127.1194...


AAPG Continuing Education Course Note Series #38: Geostatistics in Petroleum Geology, Course Exercises, Exercise 1: Calculating an experimental indicator variogram

Olivier Dubrule

AAPG Special Volumes

...AAPG Continuing Education Course Note Series #38: Geostatistics in Petroleum Geology, Course Exercises, Exercise 1: Calculating an experimental...


Coherence Attribute Applications on Seismic Data in Various Guises

Satinder Chopra, Kurt Marfurt

Unconventional Resources Technology Conference (URTEC)

... algorithms The different coherence algorithms that have been proposed over time are the crosscorrelation-based (Bahorich and Farmer, 1995), semblance...


Physics of Marine Orogenesis

A. E. Scheidegger

CSPG Bulletin

... in the Arctic. Attempts at calculating isostatic anomalies from the gravity profiles have been singularly unsuccessful. (Hess, 1954). 3.2 Seismicity...


Transition–Zone Seismic Surveys in Southeast Asia

R. E. Sheriff, Palmer L. Greene, Harold Reaves

Indonesian Petroleum Association

... gauge. The survey boat takes a final position just prior to shooting which is used for calculating locations. Pre-plots and post-plots are calculated...


Application of Data Analytics for Production Optimization in Unconventional Reservoirs: A Critical Review

Srikanta Mishra, Luan Lin

Unconventional Resources Technology Conference (URTEC)

... (KM) - Models the response as a trend term with an autocorrelation structure, where neighboring observations have similar responses [10]  Self...


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