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The AAPG/Datapages Combined Publications Database

Showing 2,005 Results. Searched 188,833 documents.

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A Comparative Study of 3-D Noise Attenuation Techniques

Daniel Wheaton, Yendri, Kusnarya

Indonesian Petroleum Association

.... Noise removed from line NS-Y by 2D plus 2D Fx filtering Randomization of Linear Noise Exhibit 4 demonstrates the effect of rotating the grid...

1996

Abstracts: What Receivers will we use for Low Frequencies?; #90173 (2015)

R. Malcolm Lansley and Peter Maxwell

Search and Discovery.com

... geophones that most recording crews use today. Improvements in digital filtering in our recording systems have allowed for steeper-sloped anti-alias...

2015

Corrected Record Sections

Ernest M. Hall Jr.

CSPG Special Publications

... of Fig. 4 show the effect of filtering. Both were played back from the same tape, the first through a high frequency filter and the second through a low...

1957

Seismic Exploration for Stratigraphic Traps: Geophysical Exploration Methods

Paul L. Lyons, M. B. Dobrin

AAPG Special Volumes

..., such as the geophones and the amplifiers, which have a much lower dynamic range than the digital elements. In principle, the most effective approach...

1972

How to Improve the Definition of Seismic Reflection Data

D. Michon, R. Garotta

Indonesian Petroleum Association

... enable him to evaluate the filtering effect of the noise - Fig. 1. Here is the amplitude response of a linear array of nine geophones. The horizontal...

1979

Abstract: Noise and its Effect on Microseismic Event Locations; #90174 (2014)

Neda Boroumand and Henry Bland

Search and Discovery.com

... employ various frequency-selective preprocessing filters prior to picking and locating events. We will also see what (if any) effect pre-pick filtering...

2014

Abstract: Red Sea 2D Transition Zone Reprocessing Case Study; #90254 (2016)

Sergey Kishchik

Search and Discovery.com

..., and three air gun array sources. There were six types of receivers, such as geophones for land surveys and marsh phones, OBC hydrophones, OBC...

2016

Technique and Methods of Geophysical Exploration in Canada

A. I. Bogdanov

Petroleum Geology: A Digest of Russian Literature

... of a spring, and has a system for dampening microseisms. The instrument is very stable; drift of zero is generally less than 0.5 mgl per month. Dreyfus effect...

1959

Abstract: Hurrah for Hussah! Analysis of Stacked Data from a Low-frequency Seismic Data Acquisition Experiment at Hussar, Alberta; #90174 (2014)

J. Helen Isaac and Gary F. Margrave

Search and Discovery.com

... with a custom low dwell sweep, and dynamite. Each source was recorded by three receiver types: 10 Hz 3C geophones, 4.5 Hz 1C geophones and Vectorseis...

2014

Seismic Surveying

W.B. Heroy Jr., R.A. Arnett

Appalachian Geological Society

...-instrument truck (Figure 5), carrying geophones, cables, electrical filtering, amplifying and recording equipment, generators, batteries, developing...

1949

Extending the Resolution of Seismic Reflection Exploration

L. R. Denham

Pacific Section of AAPG

... than this wavelength. The array will then have little overall effect on the desired signal. Geophone array design theory generally assumes all geophones...

1980

The Role of Statics Application in the Imaging of Sub-Surface in Fold Belt Areas, #40746 (2011)

Arun Kumar Arya, Bharat Chandra Joshi, Narinder Pal Singh,

Search and Discovery.com

..., limit the lower part of the frequency band causing a “ringy” effect in the seismic data. On the other hand, the 30 Hz geophones are more sensitive...

2011

Seismic Acquisition in the Papuan Fold Belt: A New Approach

G. S. Hill, S. J. Price, M. S. Foster, R. W. Stephenson, D. Ellis, J. A. Lyslo

Papua New Guinea (PNG) Petroleum Convention Proceedings

... dug through to the bedrock. In addition, wherever possible the geophones were cemented to the limestone. (3) Interactive, iterative seismic data...

1996

Foreword for Geophysical Part of Field Trip

R. E. Kropschot, James E. Walker

Pacific Section of AAPG

... being recorded at any given time during the course of operations. United 1–38 amplifiers and Electro-Tech EVS-2 geophones with a natural frequency...

1965

Surface Source Technology

Stan D. Brasel

Pacific Section of AAPG

... minimized the ground mixing or velocity filtering effect and still have provided the desired level of signal-to-noise enhancement. Figure 20. Seismic...

1972

Seismic Resolution in the Mahakam Delta

J. B. Beauchamp

Indonesian Petroleum Association

... the right parameters were not used on the fields – geophones instead of hydrophones, single shot instead of double shot, horizontal filtering instead...

1980

Field Technique Design for Seismic Reflection Exploration

L. R. Denham

Dallas Geological Society

...). Because we are now interested in attributes of reflections rather than just reflection times, the effect of field parameters on the reflections...

1982

Abstract: Elastodynamic FWI Efficiency Study With Partial Stacking in 2D; #90224 (2015)

Vladimir N. Zubov, Gary F. Margrave, and Michael P. Lamoureux

Search and Discovery.com

... no effect on both stacks until the moment when filtering starts increasing the weight of the noise frequency in the misfit data masking. It appears after...

2015

Telluric Currents and Their Use in Petroleum Exploration

K. Vozoff , R. M. Ellis , M. D. Burke

AAPG Bulletin

... applications. The major problems at the present time are analyzing and interpreting the measurements. Analysis (filtering) is now being done...

1964

Abstract: Receiver Comparison for a Non-repeatable Earthquake Source on the Hussar 2011 Low-frequency Seismic Experiment; #90174 (2014)

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

Search and Discovery.com

... geophones at 10 m station spacing, VectorSeis 3-C accelerometers at 10 m spacing, Sunfull 4.5 Hz 1C geophones at 20 m spacing, a partial line of SM-24...

2014

Abstract: Acquiring Low Frequencies : Sweeps, Sensors, Sampling and Stories; #90224 (2015)

Olivier Winter, Anna Leslie, and Forest Lin

Search and Discovery.com

... 300 m/s ground roll, which helps the linear noise attenuation through velocity-filtering. Statics do not prove as destructive as they can be for higher...

2015

Abstract: Increasing Seismic Resolution by Decreasing Receiver Spacing; #90171 (2013)

David C. Henley, Kevin W. Hall, Malcolm Bertram, and Eric Gallant

Search and Discovery.com

... of very closely spaced geophones recorded individually. Using 3C geophones spaced 1m apart, we demonstrated the benefits of seismic acquisition...

2013

Chapter 12: Microseismic Monitoring in Early Haynesville Development

Peter M. Duncan, William B. Barker, Leo Eisner, Peter G. Smith, Kevin Smith, Sherilyn Williams-Stroud

AAPG Special Volumes

.... The Haynesville posed some particular difficulties to monitoring with geophones placed at near reservoir depths in nearby wells. Being in the early stages...

2013

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