Pre-drill Reservoir Evaluation Using Passive Seismic Imaging

Charles Sicking, Jan Vermilye, Ashley Yaner

Unconventional Resources Technology Conference (URTEC)

... in the frequency spectrum. Any monochromatic signal will have a spike in the frequency spectrum that is not repetitive or periodic in that domain...

Passive seismic HVSR surveying for groundwater exploration at the Chilalo Graphite Project, Tanzania

Sharna Riley, Jayson Meyers, John Sinnott

Petroleum Exploration Society of Australia (PESA)

... bedrock. SH resonance developed within the low velocity layer produces a local minimum in the vertical component frequency power spectrum of data...

AAPG Memoir 76, Chapter 18: Velocity Estimation for Pore-Pressure Prediction

David W. Bell

AAPG Special Volumes

...AAPG Memoir 76, Chapter 18: Velocity Estimation for Pore-Pressure Prediction David W. Bell 2001 177 215 AAPG Memoir 76: Pressure Regimes...

Premigration attenuation analysis and mapping to image domain by weighted migrations

Yonghe Sun, Chunling Wu, Mark Fan, Zhemin Tan

International Meeting for Applied Geoscience and Energy (IMAGE)

... be quantified by a Q-factor and can be incorporated into a complex velocity representation 1 𝑓 𝑖 𝑣 𝑐 (𝑓) = 𝑣(𝑓0 ) ⋅ [1 + ln ( ) + ], (1) 𝜋𝑄 𝑓0 2...

Frequency vs Azimuth (FVAZ): the Younger Member of the Family of Seismic Driven Fracture Characterization Methods

Juan Tavella, Victoria Lazzari, Marcelo Frydman, Néstor Herrera

Unconventional Resources Technology Conference (URTEC)

.... Elastic wave velocity and anisotropy results presented herein, together with effective stress, were the key for a better understanding of the pressure...

Application of deghosting method based on Greens theorem in reservoir description of Bohai Bay

Shaoxuan Li, Jiangfeng Zheng, Lei Gao, Zhiping Zhao

International Meeting for Applied Geoscience and Energy (IMAGE)

... such as the velocity of the subsurface. At the same time, the construction of Green's function is flexible and convenient, and it is suitable for various...

ABSTRACT: Rejuvenation of a Mature Field Through Application of a Unique Frequency Enhancement Technology; #90007 (2002)

Marcus L. Countiss

Search and Discovery.com

... encrypted messages. Here the earth reflectivity is not viewed as being filtered but rather “encoded” with the upper portion of the spectrum...

High Frequency Full Waveform Inversion as an Interpretation Solution

Laurence Letki, Matt Lamont, Troy Thompson

Australian Petroleum Production & Exploration Association (APPEA) Journal

... overburden, travel-time tomography may not be sufficient to accurately resolve velocity variations, which can compromise the quality of the seismic image...

Anisotropic Assessment of Middle and Lower Bakken Formations using Multi-Physics Measurements

Gama Firdaus, Valeria Suarez, Kurt Livo, Jyoti Behura, Manika Prasad

Unconventional Resources Technology Conference (URTEC)

... anisotropic features of the rocks, we used a single core measurement technique with the ability to record simultaneous ultrasonic velocity and electrical...

Role of Vortices in Surf Zone Prediction: Sedimentation and Wave Forces

Robert L. Miller

Special Publications of SEPM

... of the internal velocity field indicates the importance of breaker vortices whose size and strength are a function of breaker shape Numerous experiments have...

Some Results of Experimental Work on Increasing the Depth of Investigation of Seismic Reflection Surveying in the West Kuban Downwarp

Ye. A. Kozlov

Petroleum Geology: A Digest of Russian Literature

... on the records reach a maximum at times of 3-6 seconds. These waves propagate in sediments located close to the surface with a velocity on the order...

Abstract: Efficient Broadband Marine Acquisition and Processing for Improved Resolution and Deep Imaging; #90172 (2014)

Ed Kragh, Tim Brice, Tony Curtis, Josef Heim, Deepak Kapadia, Morten Svendsen

Search and Discovery.com

..., imaging, and velocity model building, also benefit from the broadband result. Data acquired in this way are also more robust to poor weather conditions...

Advanced analysis of helicopter-borne microTEM data for seismic base of sand corrections

Ersan Turkoglu, Daniele Colombo, Ernesto Sandoval-Curiel

International Meeting for Applied Geoscience and Energy (IMAGE)

... the final stacked images while large areas entirely covered by extremely low velocity sand dunes are subject to interpretation pitfalls due to the time...

Amplitude Recovery of Digitally Recorded Data

Roy O. Lindseth

Pacific Section of AAPG

... is directly related to changes in lithology, characterized by velocity and density variations. Properly recovered amplitude data can be mapped...

Noise Attenuation in Common Receiver Gather to Enhance S/N Ratio in Seismic Data

Dara Felisia A, Triswan Mardani Ade Surya, R.B.Fauzan Irshadibima, Firman Syaifuddin

Indonesian Petroleum Association

... receiver gather domain are processed with the same flow, which is bandpass filter, deconvolution, time variant spectrum balancing, velocity analysis...

Abstract: Robust Surface-Consistent residual Statics and Phase Correction…Part 1; #90224 (2015)

Nirupama Nagarajappa and Peter Cary

Search and Discovery.com

... deconvolution (Cary et al. 1993) is to attempt to whiten the amplitude spectrum and zero the phase. Due to noise and other factors, we expect that phase errors...

Seismic Estimation of Point-Bar Sands Using Simple Modeling Procedures

Robert Dennison

Indonesian Petroleum Association

... by inputing the sonic and density logs from tape, digitised every 10 ft. Acoustic impedance values, i.e. velocity × density, versus two way time...

Application of VTI PSDM for imaging carbonate structures

Seyed Yaser Moussavi Alashloo, Deva Ghosh, Yasir Bashir, Amir Babasafari

Geological Society of Malaysia (GSM)

...) is recognized by the industry as a tool for areas with strong velocity variations, such as salt domes, thrust belts, faults, and stratigraphic structures...

Production Logging: Part 9. Production Engineering Methods

James J. Smolen

AAPG Special Volumes

..., sink, and restriction to flow are the noise sources. The frequency spectrum of the noise is also observed to further improve the understanding of flow...

Enhancing Seismic Discontinuity Attributes with Creative Workflows; #42025 (2017)

Satinder Chopra, Kurt J. Marfurt

Search and Discovery.com

... interactive velocity analysis. Once an accurate velocity analysis has been done, it is used to migrate the original (noise contaminated) rather than...

Estimates of Sand Transport on the New York Shelf Using Near-bottom Current Meter Observations

P. E. Gadd, J. W. Lavelle, D. J. P. Swift

Journal of Sedimentary Research (SEPM)

... depths along the New Jersey coast during the same measurement period. The Spring 1974 current velocity field yields transport rates of lesser magnitudes...

Robust localized adaptive waveform inversion: A new regularization for Gabor deconvolution

Peng Yong, Romain Brossier, Ludovic Mtivier

International Meeting for Applied Geoscience and Energy (IMAGE)

... a localized adaptive waveform inversion method (LAWI) to tackle the cycle-skipping issue in velocity reconstruction by waveform inversion. In LAWI, the Gabor...

Bottom Cable 3-D Seismic Operations in the Transition Zone

Ezhar Manaf, Bambang Indroyono, Peter C. Johnson, James A. Musser

Indonesian Petroleum Association

...; V is the average stacking velocity to the target; and Fmax is the highest unaliased frequency in the signal spectrum. The scalar factor 0.414...

Abstract: Q Estimation by a Match-filter Method; #90174 (2014)

Peng Cheng and Gary F. Margrave

Search and Discovery.com

... the change in the spectra of reflections. The spectrum of the reflected wave is subjected to the tuning effect (Sheriff and Geldart, 1995) of local thin...

Understanding the Seismic Wavelet; Steven G. Henry; Search and Discovery Article #40028 (2001)

Search and Discovery.com