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Velocity

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Proceedings Papers

Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-431
... Analysis of River Velocity Measuring Methods for Low Velocity Considering the Characteristics of Rivers in Korea Hyun Dong Kima, Jinhyu Choia and Kisu Kwakb a Research and Development Center, Mirae Ocean Corporation, Anyang-si, Gyeonggi-do, Korea b Department of Ocean Engineering, Pukyong National...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17538873
... ABSTRACT Defining a meaningful subsalt velocity trend is a major challenge when i) tomography is compromised by poor illumination and/or ii) there is little or no subsalt well information. In such a case, rock physics based velocity modeling can be helpful in building a geologically feasible...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17539593
... time and depth domain, are usually characterized by high speed or low speed with sharp change in thickness. Accurate structure confirming is difficult because fine velocity field construction is very difficult due to sharp lateral anisotropy caused by the locally developed velocity anomalies, and big...
Proceedings Papers

Paper presented at the 2016 SEG International Exposition and Annual Meeting, October 16–21, 2016
Paper Number: SEG-2016-13972107
... ABSTRACT The linear velocity model is often used for depth conversion of interpreted seismic horizons and for building preliminary velocity models for depth migration. The model has an implicit assumption that sediments are currently at their deepest point of burial, which may not be the case...
Proceedings Papers

Paper presented at the 2015 SEG Annual Meeting, October 18–23, 2015
Paper Number: SEG-2015-5932576
... image point iteration upstream oil & gas geophysics reservoir characterization trajectory reflector coimbra schleicher time-migrated image moveout velocity analysis time-remigration trajectory velocity model migration velocity analysis marmousoft data velocity variation...
Proceedings Papers

Paper presented at the 2015 SEG Annual Meeting, October 18–23, 2015
Paper Number: SEG-2015-5831251
... Summary In 2014 we proposed a new technique that used well information to correlate anisotropy with velocity for localized lithology dependent anomalies (Birdus at al., 2014). It is based on the assumption that in appropriate geological settings localized variations in both velocity...
Proceedings Papers

Paper presented at the 2014 SEG Annual Meeting, October 26–31, 2014
Paper Number: SEG-2014-1471
... fomel diffraction imaging reservoir characterization continuation imaging decomposition landa diffraction event migration velocity reflection geophysics diffraction upstream oil & gas migration velocity analysis fourier transform continuation velocity dip-angle gather...
Journal Articles
J Pet Technol 65 (07): 94–97.
Paper Number: SPE-0713-0094-JPT
Published: 01 July 2013
...Chris Carpenter This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper SPE 164495, ’Measured Plunger-Fall Velocity Used To Calibrate New Fall-Velocity Model,’ by O.L. Rowlan and J. McCoy, Echometer Company; J. Lea, PLTech; and R. Nadkrynechny and C. Cepuch, T...
Proceedings Papers

Paper presented at the SPE Production and Operations Symposium, March 23–26, 2013
Paper Number: SPE-164495-MS
...Abstract Abstract Plunger fall velocities for various plungers have been measured in many different wells in the field and measured in a large scale well simulator. A new theoretical plunger fall velocity model has been developed. This model equates plunger fall velocity to be inversely...
Proceedings Papers

Paper presented at the 2011 SEG Annual Meeting, September 18–23, 2011
Paper Number: SEG-2011-0310
... ABSTRACT One of the most serious problems in anisotropic velocity analysis is the trade-off between anisotropy and lateral heterogeneity, especially if velocity varies on a scale smaller than spreadlength. Here, we develop a P-wave MVA (migration velocity analysis) algorithm for transversely...
Proceedings Papers

Paper presented at the 2011 SEG Annual Meeting, September 18–23, 2011
Paper Number: SEG-2011-2512
... ABSTRACT We present the theory of Love wave inversion for shear velocity profiles using phase velocity, group velocity, and shear stress ratio measurements. This theory can be used to setup practical inversion schemes to estimate the near-surface velocity structure in the Earth. The method...
Proceedings Papers

Paper presented at the 2010 SEG Annual Meeting, October 17–22, 2010
Paper Number: SEG-2010-4364
... grid tomography near-surface velocity model interval velocity experiment rvi reservoir characterization velocity model correction tomographic velocity model building true model tomography upstream oil & gas interface initial model deep reflector seg seg denver 2010 geophysics...
Proceedings Papers

Paper presented at the 2010 SEG Annual Meeting, October 17–22, 2010
Paper Number: SEG-2010-2130
... microseismicity microseismic event velocity model fracture geometry seg seg denver 2010 check shot inversion anisotropic velocity modeling reservoir characterization anisotropy arrival time upstream oil & gas perforation shot maxwell anisotropy model calibration geometry...
Proceedings Papers

Paper presented at the 2009 SEG Annual Meeting, October 25–30, 2009
Paper Number: SEG-2009-2258
... laplace-fourier domain density model velocity model waveform inversion full waveform inversion complex frequency true model international exposition inversion algorithm benchmark dataset wavefield deeper part artificial intelligence reservoir characterization bp velocity-analysis...
Proceedings Papers

Paper presented at the The Nineteenth International Offshore and Polar Engineering Conference, July 21–26, 2009
Paper Number: ISOPE-I-09-416
... Shear wave velocity has been commonly used as one of the important design parameters for geotechnical structures which are subjected to dynamic loading. This paper introduces the development and application of a new apparatus, the Field Velocity Probe (FVP) for measurement of shear wave velocity...
Proceedings Papers

Paper presented at the 2008 SEG Annual Meeting, November 9–14, 2008
Paper Number: SEG-2008-3078
... depth migration time-shift gather migration reservoir characterization imaging condition migration velocity velocity perturbation upstream oil & gas annual international meeting wave imaging technology inc wavefield rms velocity velocity analysis iteration wave equation...
Proceedings Papers

Paper presented at the 2008 SEG Annual Meeting, November 9–14, 2008
Paper Number: SEG-2008-1925
... SUMMARY Several method exist to invert for a velocity model from seismic data. Most commonly used methods are defined in the image domain. However, some methods that are defined in the data domain also exist. In this paper we review and compare a few methods on synthetic data, using...
Proceedings Papers

Paper presented at the SPE Saudi Arabia Section Technical Symposium, May 7–8, 2007
Paper Number: SPE-110947-MS
... / ρ 0 . 5 Where V P , compressional wave velocity; E, Young modulus; σ; Poisson ratio; λ is Lame's constant; μ, rigidity modulus and ρ, rock density. Shear wave, Vs When shear deformation propagates in an elastic solid, the motion of individual particles is always perpendicular...
Proceedings Papers

Paper presented at the 2006 SEG Annual Meeting, October 1–6, 2006
Paper Number: SEG-2006-2440
... ABSTRACT Due to the geometrical complexity of the typical Gulf of Mexico (GOM) velocity models, with embedded salt bodies of any shapes, wave equation migration is used preferentially over Kirchhoff methods for subsalt velocity model building. This preference is based on the ability of wave...
Proceedings Papers

Paper presented at the 2005 SEG Annual Meeting, November 6–11, 2005
Paper Number: SEG-2005-1978
... ABSTRACT With complicated and huge salt bodies as in Gulf of Mexico, ray tomography reaches its limitation due to difficulties in performing raytracing. In this paper we investigate a strategy in which ray tomography and wave equation migration velocity analysis are integrated to construct...

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