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The AAPG/Datapages Combined Publications Database

Showing 39,748 Results. Searched 187,797 documents.

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Abstract: Adaptive f-xy Hankel Matrix Rank Reduction Filter to Attenuate Coherent Noise; #90174 (2014)

Nirupama (Pam) Nagarajappa

Search and Discovery.com

... wave). Other types of coherent noise that are less common in occurrence and yet equally important, include air blast, flexure waves and near surface...

2014

Abstract: Importance of Pre-Frack Site Surveys and Broadband Seismometers to Microseismic Monitoring; #90174 (2014)

N. Ackerley and N. Spriggs

Search and Discovery.com

... understanding of the characteristics of site noise before attempting to detect events. Because events are fundamentally transient signals, power spectral...

2014

Abstract: Resolution and Location Uncertainties in Surface Microseismic Monitoring; #90174 (2014)

Michael Thornton

Search and Discovery.com

... higher levels of noise at surface. While borehole monitoring schemes typically rely on detection of events followed by event location, the reduced...

2014

Uncertainty in Surface Microseismic Monitoring; #41258 (2013)

Mike Mueller, Michael Thornton, and Leo Eisner

Search and Discovery.com

... types of uncertainty, we constructed a synthetic data set that was used in our imaging algorithm to locate events with varying amounts of noise...

2013

Abstracts: Microseismic Network Design: Estimating the Number of Detected Events During Hydraulic Fracturing; #90173 (2015)

Shawn Maxwell

Search and Discovery.com

... microseismic events to 1e-6 hydraulic energy of the injection) which appears to account for the injection characteristics and also 1e-7 potentially...

2015

S/N RATIO AND BANDWIDTH CONSIDERATIONS WHEN UTILIZING SEISMIC DATA IN EXPLORING FOR SUBTLE TRAPS - EXAMPLES FROM THE KNOX PLAY

Edward R. Tegland, Exploration Development, Inc., S. Pikes Peak Dr., Parker, CO Patrick H. Bygott, Exploration Development, Inc., S. Pikes Peak Dr., Parker, CO

Ohio Geological Society

... where there is significant amplitude variation between different geologic events one normally defines this by the behavior...

1999

Abstract: Estimating the Spectra of Small Events for the Purpose of Evaluating Microseismic Detection Threshholds; #90174 (2014)

N. Ackerley

Search and Discovery.com

...on and Heaton were developed for comparison to clip levels, they are just as useful for comparison to noise floors, because the problem of triggering even...

2014

A Comparative Study of 3-D Noise Attenuation Techniques

Daniel Wheaton, Yendri, Kusnarya

Indonesian Petroleum Association

... coherent noise characteristics that are essentially consistent within a given receiver group collection but are (phase) variable from receiver to receiver...

1996

Abstract: Uncertainty in Surface Microseismic Monitoring; #90187 (2014)

Michael Thornton, Mike Mueller, and Leo Eisner

Search and Discovery.com

... that sign-to-noise-ratio is a key indicator of both types of the uncertainties. Introduction Unconventional resource plays demand intense drilling...

2014

Salt Related Volume Interpretation: An Example of Utilizing Volume Interpretation Software with Challenging Data Quality

Adam M. Seitchik

GCAGS Transactions

.... By analyzing the changing characteristics of the data during animation, geologic events become separated from noise trains and uncollapsed migrations...

2006

Abstract: Interferometric Assessment of Clamping Quality of Borehole Geophones; #90224 (2015)

Yoones Vaezi and Mirko van der Baan

Search and Discovery.com

... body waves and the corresponding formation velocity models nearby the wellbore from correlation of noise records at borehole geophones in different...

2015

Methods for reducing unwanted noise (and increasing signal) in passive seismic surveys

Tim Dean, Aidan Shem, Mus'ab Al Hasani

Petroleum Exploration Society of Australia (PESA)

... noise spectrum of an instrument adjusted for three different noise levels, 0.3, 0.6, and 1.2 µV respectively. In this example we can see that we...

2018

Abstract: Confidence and Accuracy of Microseismic Images; #90171 (2013)

S.C. Maxwell

Search and Discovery.com

... corresponded to the arrival time of induced seismic events resulting in a localized “noise” spike. Of particular interest in this example...

2013

Surface Source Technology

Stan D. Brasel

Pacific Section of AAPG

... theory. Since good records means good signal-to-noise ratios both the signal and noise characteristics of seismic source systems must be evaluated. First...

1972

Application of Lift Technique before Spectral Decomposition to Re-Model Channel Distribution in the Sungai Gelam Field, Jambi

Agi Robby Rizaldi, Firman Fauzi

Indonesian Petroleum Association

... data processing is attenuating these different noise types while preserving the character of the underlying data. Traditional noise attenuation methods...

2015

Seismic Frequency Bandwidth Constraints in Deepwater Locations

Andrew Long, Iain Buchan

Indonesian Petroleum Association

... characteristics and complex stratigraphic styles collectively yield surface seismic data that has a small frequency bandwidth and a poor signal-to-noise content...

2004

Abstract: Black Box Recording of Passive Seismicity: Pitfalls of not Understanding your Acquisition Instrumentation and its Limitations; #90187 (2014)

Ted Urbancic and Andreas Wuestefeld

Search and Discovery.com

... outline frequency and bandwidth limitations, consider different noise and resonance effects on signals, the effects of coupling behaviour, and introduce...

2014

Key Features of TEM and EM-IP Investigations in South-East Asia (Paper P45)

Y. A. Agafonov, I. V. Bouddo, I. V. Egorov, M. M. Salleh

Geological Society of Malaysia (GSM)

... was complicated by several factors. Through the analysis of EM data the different types of noise interfering with electromagnetic data were estimated...

2012

A Case Study on the Challenges Overcome in the Merge of Seven On-Shore 3-D Surveys of Varying Acquisitions in Huila Department, Colombia

Henry Maldonado, Timothy Brooks, Lilia Maria Saavedra, Gilbert Gutierez, Albeiro Saavedra, Peter Watterson

Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)

... to noise ratio of the different surveys. Due to the difficult signal to noise ratio of the data in many areas and the different acquisition grids...

2009

Abstract: Challenges in AVO Compliant Processing of Multiple Surveys; #90171 (2013)

Greg Cameron, Josef Heim, Frederik Horn, and Andy Dyke

Search and Discovery.com

... geometry, overlaps between surveys, and different noise content must be compensated for if seismic data are to be merged with the ultimate goal...

2013

Abstract: Challenges in AVO Compliant Processing of Multiple Surveys; #90171 (2013)

Greg Cameron, Josef Heim, Frederik Horn, and Andy Dyke

Search and Discovery.com

... geometry, overlaps between surveys, and different noise content must be compensated for if seismic data are to be merged with the ultimate goal...

2013

Amplitude Recovery of Digitally Recorded Data

Roy O. Lindseth

Pacific Section of AAPG

... of this procedure. However, there are many other types of noise which cause the output amplitude characteristics to be quite different from the model...

1972

A New Solid Streamer Design

Rune Tenghamn, Andrew Long

Petroleum Exploration Society of Australia (PESA)

... streamer noise types are therefore highly variable accordin g to the combination of vessel towing characteristics, streamer design, and sea state...

2005

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