Improved Present-Day Surface Heat Flow Prediction: Examples from Africa

Jeffrey A. Nunn, Robert Pawlowski, Elizabeth Johnson

International Meeting for Applied Geoscience and Energy (IMAGE)

..., hydrothermal circulation of sea water through fractured basalt prior to burial by sediments, and hotspot tracks. Sources of noise include measurement...

Abstract: Duplex Wave Migration … Imaging Vertical Boundaries; #90211 (2015)

Brian Link and Naum Marmalevsky

Search and Discovery.com

... to the surface. This secondary bounce energy appears (on a raw seismic record) to be some form of coherent noise, or offline artifact on the seismic record...

Seismic Detection of Overpressuring and Fracturing: An Example from the Qaidam Basin, People’s Republic of China

Robert J. Paul

Southeast Asia Petroleum Exploration Society (SEAPEX)

..., 1984, Geology of the Chaidamu Basin, Qinghai Province, Northwest China: U.S. Geological Survey Open-File Report 84–413. Loinger, E., 1983, A Linear...

Application of Wide-Azimuth 3-D Seismic Attributes to Predict the Microfractures in Block MA Area for Shale Gas Exploration in South China

Yusheng Zhang, Gang Yu, Xing Liang, Li Jiang

Unconventional Resources Technology Conference (URTEC)

... and obtaining high signal-to-noise ratio (S/N) raw seismic data, conducting prestack denoising, fidelity amplitudepreserved processing, precise velocity...

Improved Exploration, Appraisal and Production Monitoring with Multi-Transient EM Solutions

Search and Discovery.com

... of the seismic signal, as well as the level of geological noise. The resistivity for a given clay-free reservoir (invariant porosity, salinity, temperature...

Current Trends in Geophysics

H. E. Stommel, J. M. Graul

Indonesian Petroleum Association

... is desirable for the purpose of attenuating ground roll and other surface noise, what benefit derives from individual recording? Figures 7 and 8 provide...

The Use of Physical Modeling to Resolve Offshore Seismic Problems

B. J. Evans, M. Urosevic

Indonesian Petroleum Association

... noise in the form of coherent waves totally mask the reflections, as shown in Figure 3a. This Figure shows strong noise waves passing across the record...

Abstract: Structurally-Consistent Interval Velocity Variation with Azimuth; #90187 (2014)

Darren Schmidt, Alicia Veronesi, Chris Davison, and Jeff Durand

Search and Discovery.com

... is presented which uses strong, coherent events on the stacked seismic data to improve the interval velocity derivation. This result has higher VVAz...

Recent advances, road ahead: Acquisition, processing, and interpretation improvements in using land seismic data for QI

Christof Stork, James Corey Morgan

International Meeting for Applied Geoscience and Energy (IMAGE)

... more distorted data. The distorted signal is a type of coherent noise that does not stack out. The distortion is often consistent with surface...

A statistical method-based approach for frequency-varying residual phase detection and correction

Longxiang Han, Rongwei Xu, Chengliang Wu, Huazhong Wang

International Meeting for Applied Geoscience and Energy (IMAGE)

..., China Summary The coherent superposition of band-limited wavelet from the same underground reflection point, but from different shotreceiver pairs...

Abstract: Adaptive Microseismic event Detection and Automatic Time; #90174 (2014)

Jubran Akram and David Eaton

Search and Discovery.com

... the incoherent noise, enhances the coherent signal. Figure 2 shows the STA/LTA response of three microseismic data components and their product. To avoid...

Fracture Imaging and Permeability Fairway Mapping; #41150 (2013)

Charles Sicking, Jan Vermilye, Peter Geiser, Alfred Lacazette, and Laird Thompson

Search and Discovery.com

...-site pair. a weak but coherent signal results in a high semblance value Constructing a Tomographic Fracture Image + 2009 Map view 334 22:43:47...

A Case Study of Seismic Exploration in the Offshore Bonaparte Basin

J. Durrant, A. Young

Petroleum Exploration Society of Australia (PESA)

... noise attenuation and signal penetration. Intensive processing directed, in particular, towards multiple attenuation, coherent noise reduction...

Open-Cast Slump Sheets and their Relationship to Sandstone Beds in an Upper Cambrian Flysch Sequence, Tasmania

Keith D. Corbett

Journal of Sedimentary Research (SEPM)

... Range, southwest Tasmania. The slumps range from coherent types, in which bedding is well preserved, through semi-coherent, in which there has been...

Spatial Analysis of Basement and Cover Linears by Optical Diffraction - Methods, Results, and Interpretation

Howard J. Pincus, Thomas W. Doe

Utah Geological Association

.... Variability or dispersion in the data should not necessarily be dismissed as “noise”, for this might be of genetic significance. Abbé, Ernst, 1873...

Case History Study of Seismic-Driven 3-D MEM Calibrated with 1-D MEMs and Petrophysics in Arkoma Basin, Oklahoma

Vivek Swami, Julio Tavares, Vishnu Pandey, Tatyana Nekrasova, Dan Cook, Jose Moncayo, David Yale

Unconventional Resources Technology Conference (URTEC)

... inversion, an amplitude versus offset (AVO) compliant gather conditioning have been applied on the input gathers. Firstly, random and coherent noise...

Imaging Subsurface Structures Under Gas Clounds by Multi-Component Technology

Xiaogui Miao, Loh Fong Cheen, Libo Zi, Jing Du, Magali Beele, Jacques Bonnafe, Natalia Anggriani, Gilles Vallon, Claudio Strobbia

Indonesian Petroleum Association

... of the coherent noise properties and of the coupling. Low frequency reverberations heavily affect the raw records. Figure 4 shows an example of the raw...

Imaging of Subsurface Velocity Structure on Volcanic Area of South East Java: An Application of Passive Seismic Ambient Noise Tomography for Sub-Volcanic Hydrocarbon Exploration

Pongga Wardaya, Erlangga Septama, Vida Irine Rossa, Richie Rahmat Pratama, Rusalida Raguwanti

Indonesian Petroleum Association

... record the coherent seismic noise coming from the atmospheric activity, sea wave, or industrial activity in the surface. Cross correlation between...

Characterizing a Mississippian Tripolitic Chert Reservoir Using 3D Unsupervised Multi-attribute Seismic Facies Analysis

Atish Roy, Benjamin L. Dowdell, Kurt J. Marfurt

Oklahoma City Geological Society

... in the projections. Thus, after the final iteration, we do a non-linear projection of the PVs using a Sammon projection (Sammon, 1969). This algorithm is based...

Structural Curvature versus Amplitude Curvature, #41012 (2012)

Satinder Chopra, Kurt J. Marfurt

Search and Discovery.com

... windows along previous estimates of structural inline and crossline dip. To minimize the negative impact of noise on such computations, we favor...

Limits to Seismic Resolution of Stratigraphic Features -Applications to the Devonian Thirtyone Formation, Central Basin Platform

Charles H. Blumentritt, E. Charlotte Sullivan, Kurt J. Marfurt

West Texas Geological Society

..., but with reduced sharpness. This may suggest that the channel is not located at this time, or that the window length is too short to cancel noise...

Abstract: Low-Frequency Tremor Signals from a Hydraulic Fracture Treatment in Northeast British Columbia, Canada; #90187 (2014)

David W. Eaton, Mirko van der Baan, Jean-Baptiste Tary, and Kim Pike

Search and Discovery.com

...) microseismic events, from stage H1-3. Noise characteristics of the surface sites were also extensively studied. Non-coherent noise from the surface...

Reviving an old Buffalo - Breathing new life into an old dataset with modern technology

R. McGee, H. Debenham, P. Hoiles, A. O'Neill, J. Miller, A. Padman

Petroleum Exploration Society of Australia (PESA)

... with significant lateral velocity variations. However here, in the vicinity of the seafloor reefs, the poor signal-to-noise ratio and resulting difficulty...

Seismic Imaging Technology: Part II: Lessons from Wide Azimuth Subsalt Imaging in Deepwater Gulf of Mexico

Lasse Amundsen, Martin Landrø

GEO ExPro Magazine

... shot from several azimuths results in better illuminated reservoirs. Attenuation of multiples and other types of coherent noise are improved...

Depth Imaging Coil Data: Multi Azimuthal Tomographic Earth Model Building and Imaging of Tulip (Paper A15)

S. Chen, M. Buia, L. Livraghi, M. Bakhrudin, M. Tham, M. Bayly, S. Ng, O. Zdraveva

Geological Society of Malaysia (GSM)

..., very low signal-to-noise ratio (S/N). With conventional narrow azimuth marine acquisition, this results in poor imaging and poor illumination...