Abstract: Basement Structure under the Central Eromanga Basin from Seismic Refraction Studies

J. Lock

Petroleum Exploration Society of Australia (PESA)

... structure with depth. No strong primary reflection branches are observed at short distances (less than 20 km) therefore the velocity of the basin sequence...

ABSTRACT: TUTORIAL: IMAGING THROUGH SHALLOW GAS, DIVING WAVE

Brian Broussard, Luis Canales, Charles Carvill, Lee Lu, Juan Perdomo, Chung-Chi Shih, Sherman Yang, Peter Melville, Mehmet Tanis

Geological Society of Trinidad & Tobago

... model for depth migration. Refraction tomographic inversion of first arrival times is an iterative process. It includes initial velocity model building...

Determination of Velocity Model by Using NIP-Wave Tomographic Inversion: Application to Synthetic and Real Data

A. Hendriyana, R. Sule, Y. Akbar, L.A. Poerwaka, T.A. Sanny, Sardjito, Waluyo, Adriansyah

Indonesian Petroleum Association

... heterogeneous and appropriate for ray tracing. The velocity is used as first approximation of velocity field for pre-stack depth migration and updates...

Diving Deeper to Reveal Hydrocarbon Potential in the Barents Sea

Sören Naumann, Rune Sakariassen, PGS

GEO ExPro Magazine

... Figure 2: Fast track KPSTM stack with FWI velocity overlay through the Goliat reservoir (A) and the corresponding gas cloud (B). Velocity depth slice...

Multidisciplinary site investigations using refraction microtremor surveys

A. Pancha, J. Louie, R. A. Apperley

International Meeting for Applied Geoscience and Energy (IMAGE)

... was initially developed by Louie (2001) to measure the average shear-wave velocity to 30 m depth to meet U.S.A. building code requirements but has since...

Extended Abstract: Recent Exploration in ATP 299P(A) Eromanga Basin

D. King

Petroleum Exploration Society of Australia (PESA)

... be derived most reliably using an analytic velocity-depth function. In the absence of reliable velocity information, distortion effects can...

Where Is My Horizontal Well? Use of Borehole Seismic Where Velocities Vary Laterally

Agus Muharam, Frank Musgrove

Indonesian Petroleum Association

... location relative to the top reservoir and the overburden velocity for depth conversion. Examples from onshore North Sumatra illustrate the ideal...

Diapirs of Magdalena Delta: DISCUSSION

M. M. Ball

AAPG Bulletin

... on velocity distribution, this expansion is not uniform. Increase of velocity with depth decreases the vertical expansion. The differential expansion results...

Abstract: Late Cenozoic Vertical Movements around the North Atlantic, by P. Japsen and J. A. Chalmers; #90923 (1999)

Search and Discovery.com

Abstract: Physical Properties of Mudstones During Burial: A Comparison Between Laboratory Investigations and Well Logs from the Northern; #90063 (2007)

Search and Discovery.com

Abstract: Regional Subsurface Mapping of the Northwest Northwest Territories; #90171 (2013)

B.C. MacLean

Search and Discovery.com

..., Velocity, and Depth maps along with supporting databases, text, and figures. Examples Many features that fundamentally affected succeeding horizons...

Thoughts and Observation on Interpreting Depth-Imaged Data in the Jurassic Norphlet Play, Deepwater Eastern Gulf of Mexico, #41342 (2014)

Donald A. Herron

Search and Discovery.com

.... The availability of several versions of depth imaging based on a single velocity model but with different migration algorithms requires an interpreter...

Bottom Simulating Reflectors and Hydrate Occurrences Beneath the Scotian Slope, Offshore Eastern Canada, by John Shimeld, David Mosher, Keith Louden, Chris LeBlanc, and Kirk Osadetz; #90035 (2004)

Search and Discovery.com

Sediment Compaction the Achilles Heel of Basin Modelling

Roy H. Gabrielsen

GEO ExPro Magazine

.... Left: Velocity-depth measurements for 17 wells in the Norwegian Sea. Wells containing overpressured Jurassic sediments are highlighted in blue. Right...

An Electronic Seismic Dip Plotter

J. A. Westphal

Oklahoma City Geological Society

... be approximated by (1) and (2): When the velocity distribution is assumed to be: R = the distance from datum zero to the depth point measured...

Paleoflow Characteristics of a Late Cretaceous River in Utah from Analysis of Sedimentary Structures in the Ferron Sandstone: A Discussion

Dag Nummedal

Journal of Sedimentary Research (SEPM)

.... This discussion, therefore, proposes a new methodology for the determination of some paleoflow parameters, specifically velocity and depth. Although...

Geologic Nature of Pre-Jurassic Structural Complex in Connection with its Oil-Gas Potential in the Southeast of West Siberia

V. A. Benenson, A. S. Yefimov, N. I. Karapuzov, V. G. Sibgatullin

Petroleum Geology: A Digest of Russian Literature

... metamorphic basement with an interface velocity of 6-6.5 to 7.2 km/sec has been found to be at much greater depth than had been assumed earlier...

EXTENDED ABSTRACT: Deep Crustal Structure Of The Argentine Continental Margin From Seismic Wide-Angle And Multichannel Reflection Seismic Data; #90022 (2002)

D. Franke, S. Neben, K. Hinz, H. Meyer, B. Schreckenberger

Search and Discovery.com

... from the refraction seismic data and discuss them in context with the MCS data and potential field data. Fig. 1: Velocity-depth model across...

Abstract: P-wave and S-wave Near-surface Characterization in Northeast British Columbia (NEBC); #90174 (2014)

Liliana M. Zuleta and Don C. Lawton

Search and Discovery.com

... to calculate the depth and velocity of the layers that were detected with the offset of 1500 m used during the acquisition. The objective...

Time-Depth Modeling in High Pore-Pressure Environment, Offshore East Coast of India; #30463 (2016)

Nidhi Jindal, Ajoy Kumar Biswal, Kumar Hemant Singh

Search and Discovery.com

... becomes challenging in a complex geological environment. This study investigates plausible models between depth and interval velocity in a high...

Near Surface Seismic Investigations of Mississippian and Pennsylvanian Outcrops, #41800 (2016).

Daniel Moser, Chris Liner, Matthew Rugerri

Search and Discovery.com

... to estimate P-wave velocity and depth. Velocity also has possible application for discriminating buried LS/chert facies in the Boone Formation...

Effective Use of High Density VSP Measurements to Predict Pore Pressure and Estimate Mud Weight Ahead of Drilling in the Mahakam Delta, Indonesia

Mohammed Badri, Stephane Gazet, Gregoire de Tonnac

Indonesian Petroleum Association

... top of overpressure zone. To address this challenge, VSP method was used in accurately estimating seismic velocity to determine depth to overpressure...

A Comparison of Depth Conversion Methods in Buntal Gas Field, Block B, Natuna Sea, Indonesia

Irfan Yuliandri Syukri, John Hughes, Medi Medianesterian

Indonesian Petroleum Association

... incorporated included: (1) a linear average velocity-time function; (2) a 2nd order polynomial time-depth function; (3) an instantaneous velocity-depth V0k...

Sonic velocity, submarine canyons, and burial diagenesis in Oligocene-Holocene cool-water carbonates, Gippsland Basin, southeast Australia

Malcolm W. Wallace, Guy R. Holdgate, Jim Daniels, Stephen J. Gallagher, Andrew Smith

AAPG Bulletin

... begins at around 300-500 m burial depth, and most macroporosity is filled by calcite cement at a burial depth of around 1.5 km. Sonic velocity data from...

Application of Seismography to Geological Problems

Eugene McDermott

AAPG Bulletin

... alluvial sediments the velocity increases with depth as a result of overburdening. Such a gradual change of velocity has no practical value...