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The AAPG/Datapages Combined Publications Database

Showing 3,547 Results. Searched 191,826 documents.

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Abstract: Anisotropic Frequency-Dependent Spreading of Seismic Waves from VSP Data Analysis; #90174 (2014)

Amin Baharvand Ahmadi and Igor Morozov

Search and

... of spreading, logarithms of spectral ratios of the amplitudes in eq. (2) were calculated for pairs of receivers within each shot: u1  AR AS R 1 Nlayers (4...


Recent Advances in Borehole Seismic

W. L. Nutt

Indonesian Petroleum Association

... sensors and one downhole geophone. The downhole data are sampled at 1 or 2 mS for 3000 samples and digitization occurs with a dynamic range of 90 dB...


Downhole Microseismic Mapping of More Than 400 Fracturing Stages on a Multiwell Pad at the Hydraulic Fracturing Test Site (HFTS): Discussion of Operational Challenges and Analytic Results

Neil A. Stegent, Cody Candler

Unconventional Resources Technology Conference (URTEC)

...Downhole Microseismic Mapping of More Than 400 Fracturing Stages on a Multiwell Pad at the Hydraulic Fracturing Test Site (HFTS): Discussion...


Integrating Fracture Diagnostics for Improved Microseismic Interpretation and Stimulation Modeling

Norman Warpinski, Mike Mayerhofer, Eric Davis, Eric Holley

Unconventional Resources Technology Conference (URTEC)

... microseismicity is difficult to understand. Downhole hybrid arrays of microseismic receivers and tiltmeters provide not only the microseismic data but also...


Source Mechanism Characterization of Microseismic Data at Pouce Coupe Field, Alberta, Canada

Matthew J. Lee, Shawn Maxwell, Thomas L. Davis

Unconventional Resources Technology Conference (URTEC)

... Alberta. The completions were monitored using a variety of microseismic methods (surface, shallow water well and downhole). This paper will focus...


Characterization of a Shallow Steamed Oil Reservoir Using Crosswell Seismology

Bjorn N. P. Paulsson, John W. Fairborn

Indonesian Petroleum Association

... generated in the 68BW steam pattern using an 80 cubicinch, downhole airgun as the seismic source. Three of the sections intersect the steam zone while...


Geophysical Interpretation of Pinedale Field

Sally G. Zinke

AAPG Special Volumes

... (active two-way ray paths) • Active surface sources and downhole receivers or active downhole sources and surface receivers (active one-way ray paths...


Eagle Ford Microseismic Acquisition Geometry Benchmark

Dan Kahn, Joe Teff, Ken Silver, David Langton, Eric Hart

Unconventional Resources Technology Conference (URTEC)

... receivers causes a significant decrease in resolution. • Evaluating whether the projected savings are worth the risk of decreased resolution...


Subsurface characterisation for future CCS applications using uncommon 3D surface and borehole seismic survey geometries at Harvey, Western Australia

Milovan Urosevic, Sasha Ziramov, Roman Pevzner, Konstantin Tertyshnikov, Sinem Yavuz, Anton Egorov, Andrej Bona, Valeriya Shulakova, Dominique Van Gent

Petroleum Exploration Society of Australia (PESA)

... recordings in an unconventional way. The downhole surveys included an important borehole component, which involved 550 multi-offset Vertical Seismic...


Abstracts: Q Determination, Corner Frequency and Spectral Characteristics of Microseismicity Induced by Hydraulic Fracturing; #90173 (2015)

David W. Eaton

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.... For a given wave type (P or S) recorded on two downhole receivers, the ratio of spectral amplitudes is given by: A1 ( ) A2 ( ) e   2Q (t2 t1...


The Velocity-Deviation Log: A Tool to Predict Pore Type and Permeability Trends in Carbonate Drill Holes from Sonic and Porosity or Density Logs

Flavio S. Anselmetti and Gregor P. Eberli

AAPG Bulletin

... with the neutron-porosity or density log, provides a tool to obtain downhole information on the predominant pore type in carbonates. The log can be used to trace...


Evaluation of Naturally Fractured Reservoirs in Indonesia Using Formation Imaging and Sonic Logs

William H. Borland, Richard E. Netherwood, Sanggam Hutabarat, Dedi Juandi, Leo Anis, Hari Kurniawan, Ramsin Eyvazzadeh

Indonesian Petroleum Association

..., through the use of a downhole tool magnetometer (e.g. Plumb and Luthi, 1986), and geological features, particularly those of planar nature...


Interpretation of Down Hole Microseismic Data

Mark Boyd, Brent Riley, Davis Tolman

Indonesian Petroleum Association

... geometries. Downhole monitoring uses a few geophones (10-30) placed in a monitoring wellbore close to the events being observed for optimal...


3-D Finite Difference Modeling of Microseismic Source Mechanisms in the Wolfcamp Shale of the Permian Basin

Robert Meek, Robert A. Hull, Austin Von der Hoya, David Eaton

Unconventional Resources Technology Conference (URTEC)

... in the industry to understand AVO responses and complex geologic relationships using surface or downhole arrays. These methods tend to use simple explosive...


Applications of Broadband Land Seismology; #70253 (2017)

Zhang Ruijie

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... KZ28LF vibrator (Prototype) 1.5Hz signal was recorded by conventional geophones(10Hz) in both downhole and the surface (long-offset (30km) 2D acquisition...


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)

... approximately 25,000 1C surface receivers. The data for two perforation shots are shown in Figure 2. The left two plots are from the 4th perforation shot...


Seismic Reflection Imaging with Active Sources and Microseismic Events Recorded on Horizontal DAS Cables

David Langton, Dan Kahn, Brian Fuller

Unconventional Resources Technology Conference (URTEC)

... seismic sources and seismic receivers are at very different elevations, as they are in Figure 4, the assumption of the common mid-point that we have...


Abstracts: Microseismic Source Inversion in Anisotropic Media; #90173 (2015)

Scott Leaney, Chris Chapman, and Tadeusz Ulrych

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... of the focal sphere (e.g. Eaton, 2009), which, considering deep borehole monitoring, generally translates to needing downhole receiver arrays in at least two...


Shale Reservoirs: Improved Production from Stimulation of Sweet Spots; #41355 (2014)

Khaled H. Hashmy and Ashok Bhatnagar

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..., directionally focused transmitter and one array of six directional receivers that are azimuthally aligned with the transmitter is used in the LWD...


Practical Use of Borehole Seismic in Exploration; Goals and Shortcomings

F. Sandnes, L. Nustt, S. G. Henry

Indonesian Petroleum Association

... seismic method. Its development has been made possible by the improvement of downhole sensors and of portable recording systems. VSP has been used...


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