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The AAPG/Datapages Combined Publications Database

Showing 383 Results. Searched 191,921 documents.

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Application of Pseudorandom m-Sequences for Seismic Acquisition

Joe Wong

Search and

... mathematical constructs with impulse-like autocorrelations that make them attractive for use in seismic acquisition. They are easily produced by logic...


Application of Pseudorandom m-Sequences for Seismic Acquisition

Joe Wong

Search and

... mathematical constructs with impulse-like autocorrelations that make them attractive for use in seismic acquisition. They are easily produced by logic...


Abstract: A Field Experiment Recording Low Seismic Frequencies; #90174 (2014)

G. F. Margrave, M. B. Bertram, K. L. Bertram, K. W. Hall, K. A. H. Innanen, D. C. Lawton, L. E. Mewhort, and T. M. Phillips

Search and

.... Such a correction filter can be designed as the inverse of the geophone's impulse response. Bertram and Margrave (2011) showed that the instrument response...


Basics of Resistivity Tools - Application of Resistivity-Tool-Response Modeling for Formation Evaluation - Archie Series No. 2

Hezhu Yin

AAPG Special Volumes

... of an induction sonde in a homogeneous medium. An approximation to the exact solution can be obtained by a Taylor-series expansion in powers of L/δ...


Characterization of Early-Time Performance of a Well with a Vertical Fracture Producing at Constant Pressure

Nicholas Wiewiorowski, Alex Valdes-Perez, Thomas A. Blasingame

Unconventional Resources Technology Conference (URTEC)

... inversion of a constant (in this case, CD) is the Dirac delta, δ(t), which is an impulse function where the result is zero for all values other than...


Predicting Frac Performance and Active Producing Volumes Using Microseismic Data

Charles J. Sicking, Jan Vermilye, Alfred Lacazette

Unconventional Resources Technology Conference (URTEC)

... in the traces at each location. In the upper left corner of the depth slice there was no signal. In the upper right location there was one impulse...


Fracture Surface Extraction and Stress Field Estimation From Three-Dimensional Microseismic Data

Dylan Copeland, Alfred Lacazette

Unconventional Resources Technology Conference (URTEC)

... in Figure 1. The trace panel was created using a wave equation modeling program. An impulse was generated at the reservoir depth and the response...


Electronics & Lightning—A Study on Secondary Protection in the Arun Field

Pratignjo M., Suharyanto R., Djoko Darwanto, Reinaldo Zoro

Indonesian Petroleum Association

... of rise, di/dt Figure 6 shows the distribution of the charge related to the total flash and to the current impulse. This figure shows that the highest...


A Field Method for Determining the Firmness of Colonized Sediment Substrates

Murray K. Gingras , S. George Pemberton

Journal of Sedimentary Research (SEPM)

... by the substrate requires equating the potential energy at the top of the indentor's free fall to the energy (or impulse) absorbed by the substrate. This can...


Abstract: Macro-velocity Model Building in a Laplace-domain Waveform Inversion; #90174 (2014)

Changsoo Shin and Wansoo Ha

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... is the amplitude of an impulse source. If we take the Fourier transform of the equation with respect to x and the Laplace transform with respect to the time, we can...


Abstract: Least Squares Pre-Stack Time Migration for Imaging and Reconstruction of Converted Waves; #90224 (2015)

Aaron Stanton

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... parallelization over offsets classes using a cluster with shared memory architecture. In figure 1 the forward operator, L is applied to an impulse in model...


Petroleum Geologist and Exploration Geophysicist: Co-Ordination and Seismic Velocity

John D. Hale

CSPG Bulletin

... RECORDED BY THE REFLECTION SEISMOGRAPH An energy impulse is created by the explosion of a charge of dynamite either above (in water or air...


IV. The Role of Seismic Wavelets and Wavelet Processing

Norman S. Neidell

AAPG Special Volumes

... instruments used to record these data have an impulse response as shown in the next figure. This wavelet is the time domain expression of the filter...




Search and

...). Using the proper 3D seismic research methodology allows to follow the changes in the amplitude of seismic impulse record which marks the range...


Abstract: Simultaneous Multiple Source Acquisition using m-Sequences; #90187 (2014)

J. Wong

Search and

... in diverse fields of science and engineering. Examples of applications are the estimation of impulse responses of linear systems, wireless...


Drilling Uphill

Paul Wood

GEO ExPro Magazine

... sources, all shots in 1998 were impulse sources, buried charges onshore and airguns offshore. Micro-charges and special Magnaseis™ detonators were even...


Vaporchoc: Utilization of Steam as a New Seismic Source

P. Staron

Pacific Section of AAPG

... of the gas creates the seismic impulse, then the gas bubble oscillates giving rise to a secondary acoustic emission at each of its contractions...


Scientific-Technical Geophysical Conference

N. P. Dobrynina

Petroleum Geology: A Digest of Russian Literature

... for high temperature and pressure, core lifters, and new perforators and tests for study of slim-hole wells. To intensify development of impulse...


Single-Channel Seismic, Uniboom, and 3.5-kHs Systems Used in Solomon Islands

D. L. Tiffin

Circum Pacific Council Publications

... simultane­ ously. SINGLE-CHANNEL AIRGUN SYSTEM The SCAG seismic-reflection system utilized the acoustic impulse generated by the multichannel seismic airgun...


The Attenuation Effects of Surface-Wave Propagations on Rockmass Using SASW Method

Suharsono, Abdul Rahim Samsudin

Geological Society of Malaysia (GSM)

... characterization across broad ranges of scales from the near-surface to the whole of earth's crust. If an impulse of short duration is created...


Determination of Oil-Water Saturation and Position of the Water-Oil Contact in Carbonate Reservoirs of Fields of the Kuybyshev Region by Radiometric Methods

L. Z. Tslav, V. V. Laptev

Petroleum Geology: A Digest of Russian Literature

... impulse, etc. In many cases satisfactory results can be obtained with electrical logging using large gradient sondes (V. D. Sukhareva, 1958). The second...


Intensification of Oil Field Development - a Major Way of Increasing Oil Output

N. S. Yerofeyev, G. P. Ovanesov, M. M. Ivanova, N. F. Chernov

Petroleum Geology: A Digest of Russian Literature

... is experimenting with impulse injection of water in the Pokrovka, Kuleshov, and other fields. This works well for reservoirs with low permeability...


Quaternary buried valley characterization on the Canadian Prairies using a shear land-streamer

David G. Schieck, Robert B. Hearst

Petroleum Exploration Society of Australia (PESA)

... simultaneously from shear-shear source. An impulse source was also deployed every 10th VP at the end of the tail-spread to provide a comparison...


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