High-Resolution Model Building in a Full-Azimuth Nodal Survey in the GOM

Sandip Chattopadhyay, Gary Rodriguez, Tefera Eshete, Guy Hilburn, TGS

GEO ExPro Magazine

... velocity trend was manually inserted in the trench area. A constant velocity value of 1,350 m/s was inserted in the region between the water bottom...

Integration of Geologic Data into Structural Imaging of the Andean Subthrust, Peru; #41605 (2015)

Margaret A. Stratton, Robert Vestrum, Dennis Ellison

Search and Discovery.com

... on the structural model. With limited prestack information for velocity analysis in the shallow section where the velocity structure is the most complicated...

Near Surface Imaging using Joint Seismic Gravity Inversion

Teguh Suroso, Boko Nurdiyanto, Trilaksita B. Nugraha, Lita Novitasari, Heri Winarto

Indonesian Petroleum Association

.... Velocity Analysis Velocity analysis was performed on seismic gathers using a range of constant velocities. The resulting constant velocity migration...

Imaging Complex Structures in Colombia … Full Wave Equation Migration Approach

Hector A. Alfonso, Luis E. Rojas, Weizhong Wang, Jie Zhang, Oz Yilmaz

Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)

... time migration of shot gathers, equivalently from the floating datum, using a range of constant velocities. Next, we combined the constant-velocity...

Abstract: Automatic High-Density Constrained Velocity Picking; #90211 (2015)

Emil Blias

Search and Discovery.com

... Velocity Picking Emil Blias1 1 SeisVS, Calgary, Alberta, Canada ([email protected]) Abstract Velocity analysis is one of the main steps in seismic processing...

Geological Input Valuable in Seismic Velocity Analysis, by Supratik Sarkar; #41118 (2013).

Search and Discovery.com

The SDP Dip Plotter

W. S. Hawes

Oklahoma City Geological Society

.... Figure 1 shows the form of the constant velocity case which may be used with good approximation in some areas where a very low rate of increase...

Inversion of Magnetotelluric (MT) Data with Enhanced Structural Fidelity, #42333 (2018).

Federico Golfre Andreasi, Simone Re, Federico Ceci, Luca Masnaghetti

Search and Discovery.com

.... In this case the inversion started from a uniform half-space and converged after 25 iterations. Since we are providing a reference image that is substantially...

An Interpreter's Guide to Improvements in Depth Imaging through Model-Based Velocity Estimation and Refinement

Andy Furniss

Petroleum Exploration Society of Australia (PESA)

...An Interpreter's Guide to Improvements in Depth Imaging through Model-Based Velocity Estimation and Refinement Andy Furniss PESA Journal No. 27 (1999...

Non-First-Break Solution for Shallow Velocity Anomaly Problem; #41602 (2015)

Emil Blias

Search and Discovery.com

... constrained hyperbolic velocity analysis based on coherence semblances. The distinguishing feature of this step is that one has to manually pick...

Particle Roundness and Surface Texture Effects on Fall Velocity: NOTES

Garnett P. Williams

Journal of Sedimentary Research (SEPM)

... increments, the force F increases. At such time when F becomes equal to F, the velocity ceases to increase with time and becomes constant. In other words...

Influence of Lithology and Neogene Uplift on Seismic Velocities in Denmark: Implications for Depth Conversion of Maps

Peter Japsen

AAPG Bulletin

... with little variation in depth of burial and thickness, in which case the interval velocity will be almost constant in all wells. Note that what...

Experimental Evaluation of a Generalized Suspended-Sediment Transport Theory

Guy Gelfenbaum, J. Dungan Smith

CSPG Special Publications

... load is characterized by a single, spatially constant value of the particle settling velocity; 2. the shear has the same functional form throughout...

Flowback Analysis of the Abadi Field

Iwan Kurniawan

Indonesian Petroleum Association

... gravitational force less the buoyancy, solid particle continues to fall at a constant velocity called terminal settling velocity. The terminal...

Gaining Insight into Formation Anisotropy Using Full Azimuth Imaging and Analysis Tools

Duane Dopkin, Anat Canning, Philip Neri

Indonesian Petroleum Association

..., analysis and prospect ranking. Because these velocity differences (moveouts) are detectable with the seismic method, the goal is to capture those...

Abstracts: An Investigation of Systematic Location Errors of Microseismic Events; #90173 (2015)

Martin E. Nicola, Bernd Milkereit, and Emmanuel Bongajum

Search and Discovery.com

... in the earth vary spatially and hence affect seismic wave travel times. However, most travel time analyses are based on constant velocity models...

Formation Porosity and Fluid Content from Velocity Logs

E. R. Denton

CSPG Bulletin

... if the shale is taking the place of the lime or sand. If the lime or sand remains constant in quantity but has shale occupying the pore space, an increase...

Comparison of Interval Velocity and Inversion Velocity Usage to Build 3D Pore Pressure Models - Case Study: JA Field, East Java Basin

Jihan Hardiyanti Arief, Alamsyah M. Juwono, Muhajir

Indonesian Petroleum Association

... pressure value with sonic logs tending to be constant in 3D models as quantitative analysis result. 2. Qualitatively, the usage of interval velocity...

Imaging of Fractures and Faults inside Granite Basement Using Controlled Beam Migration (Geophysics Paper 5)

Don Pham, Jason Sun, James Sun, Qingbing Tang, Graeme Bone, Nguyen Truong Giang

Geological Society of Malaysia (GSM)

... and constant velocity sweep below the top of basement. Even with this effort, it was difficult to interpret because the image was contaminated with noise...

A Comparison of Depth-Conversion Methods in the Gulf of Mexico

Melvan D. Carter, Gary R. Hyatt

GCAGS Transactions

... the simplest constant-function approach to the "layer-cake" method to an average-velocity technique based upon seismic velocities, each method has...

Subsidence and Heat Flow in Intracontinental Basins and Passive Margins

Jean-Claude Mareschal

CSPG Special Publications

... will be examined: the cooling of a half space, the cooling of a slab with constant flux at the base and any initial temperature perturbation, the cooling...

The Seismic and Geological Definition of a Reef

R. A. Maxwell, W. Thomsen, F. Wilson

Oklahoma City Geological Society

.... Figure 4. FINAL SECTION - 12 FOLD End_Page 269------------------------ Figure 5. CONSTANT VELOCITY STACK SHOTPOINTS, 12-24 Figure 6. AVERAGE...

Chapter 8: Evaluation of Anomalous Pressuring and Gas Saturation Using 2-D and 3-D Visualizations of Well Log Information

Zun S. Jiao, Ronald C. Surdam

Montana Geological Society

... be detected and delineated using the sonic velocity analysis and advanced 3D visualization techniques developed by IER. In the present...

The Application of Image Processing Techniques for Complex Structures

V. Sudhakar, I. T. McMahon

Indonesian Petroleum Association

.... Once the migration is completed, the data is reorganized into the common depth point (CDP) domain. The velocity analysis for stack will use...

Characterizing the Seismic Response of Naturally Fractured Basement Reservoir in Sumatra Area: Towards an Efficient Seismic Exploration Strategy

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

Indonesian Petroleum Association

... little section in the lower half space of the wavefront. In contrary, both 0o and 90o orientation show that the wavefront at the lower half space has been...