Crustal Structure in Gulf of Mexico from OBS Refraction and Multichannel Reflection Data

A. K. Ibrahim, J. Carye, G. Latham, R. T. Buffler

AAPG Bulletin

... 5 and 9 km and layer velocities between 1.7 and 3.5 km/sec. Beneath most of the Gulf, this sedimentary section is underlain by a layer with velocity...

Improving Depth Prediction Accuracy of Quantified Drilling Hazards

W. Scott Leaney, William H. Borland

Geological Society of Malaysia (GSM)

... velocity. This is commonly between 10 Hz and 14 Hz, with no response below H. BORLAND 5 Hz (Fig. 3). Geophones also have a "spurious" response at high...

Velocity Logging and Its Geological and Geophysical Applications

H. R. Breck, S. W. Schoellhorn, R. B. Baum

AAPG Bulletin

... the relationship between lithology and velocity. The Lower Cretaceous section shown includes the Hensel, Cow Creek, and Sligo formations and penetrates...

Influence of Geological Factors on Longitudinal Seismic Velocities

B. B. Weatherby , L. Y. Faust

AAPG Bulletin

... not indicate clearly the velocity of the section between 1,000 and 2,000 feet deep. This can be obtained for a vertical path by taking the difference...

Seismic Activity in the Central Gulf Coast Basin

Eugene R. Brumbaugh

New Orleans Geological Society

..., a reverberating reflection, echoing back and forth between strong reflective interfaces. On a seismic record multiples can superficially look like a series...

Seismic Foldout: Geological understanding based on new data is required to unlock potential in the Vøring Basin

Jens Benfeeldt, Reidun Myklebust, TGS

GEO ExPro Magazine

... and for discrimination between volcanic rocks and sediments​ . Top Vent Fluid escape feature Transgressive sill margin Hydrothermal vent Saucer shaped...

Extended Abstract: Advances and Challenges in Seismic Data Processing and Imaging for Geologically Complex Areas

Ruben D. Martinez

GCAGS Transactions

..., deghosting, demultiple (for surface, ‘peg legs,’ and interbed multiples) (Aaron et al., 2011), are now a new challenge. Very sophisticated algorithms...

Abstract: Fracturing is Distinctly Revealed by Duplex Wave Migration; #90171 (2013)

Alexander Kostyukevych, I.U. Khromova, N. Marmalevskyi, and Y. Roganov

Search and Discovery.com

... still keeps an undisturbed matrix structure (figure 1-С, Left). The velocity of pressure change (piezoconductivity coefficient) between these wells...

Seismic Foldout: New Geo Streamer X data for exploration, ILX and appraisal in the Norwegian Sea

Kjetil Roverud, Stefan Möller, Eric Mueller, Jens Beenfeldt, PGS

GEO ExPro Magazine

... impedance contrasts, rough surfaces, complex velocities, and complex anisotropy. In addition, shallow glacial morphology generates strong noise and multiples...

Improved Subsurface Imaging and Interpretability Through Broadband Reprocessing of Legacy Seismic Data: Examples from North West Shelf Australia

Stephen Malajczuk, Rajesh Saklani, Dean Clark, David Eastwell

Petroleum Exploration Society of Australia (PESA)

..., such as well log information (Lindseth, 1979) or migration velocity models (Oldenburg, et al. 1984). However these sources can only produce a crude estimate...

The Application of Velocities and Models to Seismic Interpretation

G. Jarrota

Indonesian Petroleum Association

... phenomena: for example, the velocity of the last studied layer, between H4 and H5, is very constant, about 3.9 km/sec. On the contrary, between H3 and H4...

Integrated 3D Reservoir Characterization for Oil Sands Evaluation, Development and Monitoring, #40541 (2010)

Laurie Weston Bellman

Search and Discovery.com

... directly (or indirectly) measure P-wave velocity, S-wave velocity and density. From these measured logs, the rock physics attributes lambda...

Presalt time-lapse seismic monitoring with joint 4D FWI

Filipe Rudrigues, Gabriel Brando, Danilo Albuquerque, Danilo Froes, Benjamin Huard, Luis Cypriano, Roberto Pereira, Adel Khalil

International Meeting for Applied Geoscience and Energy (IMAGE)

... and monitor FWI velocity models and computed the difference between them. The FWI Images were obtained by Fourth International Meeting for Applied...

Elastic Multi-parameter FWI Imaging – a North West Shelf undeveloped gas field case study

Fabio Mancini

Southeast Asia Petroleum Exploration Society (SEAPEX)

... diving waves is a well-established tool in the model-building workflow for producing high-resolution subsurface velocity models. However...

Brazil Pre-Salt: Role of Seismic Technology in Full Cycle Hydrocarbon Maturation Process

Search and Discovery.com

Amplitude Mapping of Reservoirs in North Africa

Search and Discovery.com

... is to have the quarter wavelength resonance frequency within the band limit of the seismic data. A 20m thick reservoir with a 4000m/s sand velocity would...

Experience with Surface and Downhole Vector Wavefield Recording in Central Sumatra

Eddy Murhantoro, Jeff Wright

Indonesian Petroleum Association

... to lithology. To increase the S-waves velocity data base, three additional wells were recorded using the airgun source in a pit. These data enabled...

High Resolution Monitoring and Modeling of Steam Injection in the Athabasca Oil Sands at UTF: A Case Study

Search and Discovery.com

... sands deposit in order to construct a petrophysical velocity model of the SAGD process. Although the injected steam pressure and temperature controls...

Finite Difference Modelling: Part IV

Lasse Amundsen, Ørjan Pedersen, Martin Landrø

GEO ExPro Magazine

... (1788–1827), right. 50 GEOExPro March 2019 i r t with velocity V1 just above the boundary. In this case, a part of the boundary between the onset...

Impact of an Integrated Seismic Data Processing Approach: A Case Study in Central Sumatra

Mars E. Semaan, Eddy Murhantoro, Maryanto, Achmad Bermawi, Budi Subianto, Hari Santoso

Indonesian Petroleum Association

... information on the relationship between compressional wave velocity, Poisson's ratio and lithologies. This comparison provides vital information to estimate...

Reflection Seismic Interpretation and Seafloor Spreading History of Baffin Bay

P. D. Rice, B. D. Shade

CSPG Special Publications

... 79-13, 39 p. Baffin Bay is located north of the Arctic Circle between Greenland and Baffin Island (Figure 1). It encompasses an area of approximately...

Resolving DAS versus geophone discrepancies using the DAS transform: A comparative study from the CaMI CCS field research station, Alberta

Ali Sayed, Robert R. Stewart, Marie Macquet, Don Lawton

International Meeting for Applied Geoscience and Energy (IMAGE)

... vertical seismic profile (VSP) data and holds great promise as a monitoring tool in carbon capture and storage (CCS) project. However, mismatches between...

Seismic Stratigraphy — Lodgepole Play Examples

John A. Andrew

Montana Geological Society

... be remembered that: (1) seismic events seen on most conventional seismic data represent the contact (interface) between two acoustic (velocity x...

Refraction Solutions by Wavefront Targeting: ABSTRACT

Frederick L. Schenck

AAPG Bulletin

... between complementary wavefronts provides a solution to a reversed refraction profile that is independent of the refractor velocity. The agreement between...

Discriminating Gas Bearing Sands from Shale Using Rock Physics Guided Inversion, #40909 (2012)

Ahmed W. Daghistani, Aiman M. Bakhorji, Husam M. Al-Mustafa

Search and Discovery.com

... showed the best discrimination between the two lithofacies. Moreover, AVO analysis suggested that the gas bearing sand in well “A” exhibits a class 4 AVO...