Results 241 to 250 of about 39,095 (263)

Azimuthal Anisotropy Characterization Using 3D Multi-azimuth Towed Streamer Dataset

72nd EAGE Conference and Exhibition incorporating SPE EUROPEC 2010, 2010
Understanding the spatial orientation of fractured reservoirs and the stress field around them is essential for the development of an oil reservoir. Fractures and stress create anisotropy effects that can be observed in seismic data. The preferred method for analysing anisotropy from data is the amplitude variation with offset and azimuth (AVOA ...
L. C. Moffat, R. A. Clark, M. van der Baan, T. Manning   +3 more
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Azimuthal Anisotropy Results from STAR

Nuclear Physics A, 2013
Abstract Recent advances in the studies of eventwise azimuthal anisotropy from STAR have been made possible by the high statistics 200 GeV Au + Au datasets taken in 2010 and by the broad range of energies recorded during the first phase of the RHIC beam energy scan.
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Azimuthal Anisotropy and the QGP

AIP Conference Proceedings, 2006
Study of azimuthal anisotropy have played very important role at RHIC(Relativistic Heavy Ion Collider) Physics. The large azimuthal anisotropy is the proof of very early thermalization of the system which cannot be obtained without introducing interactions at the partonic level.
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Azimuthal Anisotropy in Marine Streamer Data

2nd EAGE St Petersburg International Conference and Exhibition on Geosciences, 2006
Towed-streamer acquisition samples a narrow range of azimuths. We discuss the resulting sensitivity of such data to azimuthal velocity anisotropy. Correction for such effects, using either a residual moveout correction before migration or incorporating the anisotropy within the migration step itself, can significantly improve the imaging of the data.
G. Williams, R.J. Wombell
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Azimuth anisotropy prediction and correction of wide-azimuth seismic data

Interpretation
For seismic wave propagation in media with horizontal transverse isotropy (HTI), kinematic and dynamic attributes are anisotropic. P waves propagate slower in perpendicular to fracture azimuth than parallel to it, whereas reflection strength and frequency vary with azimuth.
Liyan Zhang, Ang Li, Nianxu Xi
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Apparent resistivity of azimuthal anisotropy layered media

Acta Seismologica Sinica, 2002
The electric field, equations of boundary conditions and calculation formula of apparent resistivity are derived for azimuthal anisotropy layered media with DC method based on anisotropic Ohm’s law. Taking Schlumberger symmetric system as an example and using recurrence formula of nuclear function, the paper theoretically simulates a model of four ...
Ai-guo Ruan, Tong-en Mao, Qing-he Li, Shuang-cheng Ge   +3 more
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Characteristics of Azimuthal Anisotropy in Narrow-Azimuth Marine Streamer Data

68th EAGE Conference and Exhibition incorporating SPE EUROPEC 2006, 2006
Towed-streamer acquisition samples a narrow range of azimuths. We discuss the resulting sensitivity of such data to azimuthal velocity anisotropy. Correction for such effects, for example by using a residual moveout correction before migration, can significantly improve the imaging in such situations.
openaire   +1 more source

Seismic azimuthal anisotropy analysis after hydraulic fracturing

Interpretation, 2013
Many tight sandstone, limestone, and shale reservoirs require hydraulic fracturing to provide pathways that allow hydrocarbons to reach the well bore. Most of these tight reservoirs are now produced using multiple stages of fracturing through horizontal wells drilled perpendicular to the present-day azimuth of maximum horizontal stress.
Kui Zhang, Yanxia Guo, Bo Zhang, Amanda M. Trumbo, Kurt J. Marfurt   +4 more
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Azimuthal anisotropy: Is it really ubiquitous?

SEG Technical Program Expanded Abstracts 2007, 2007
Following the groundbreaking work of Crampin (1985), Alford (1986), Lynn and Thomsen (1990) and Lewis et al (1991), it quickly became conventional wisdom in the industry that substantial shear-wave azimuthal anisotropy is nearly ubiquitous in the subsurface. Crampin and Zatsepin (1995) made theoretical arguments that implied that most of the subsurface
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Azimuthal anisotropy of scatterometer measurements over land

IEEE Transactions on Geoscience and Remote Sensing, 2006
Studies of the Earth's land surface involving scatterometers are becoming an increasingly important application field of microwave remote sensing. Similarly to scatterometer observations of ocean waves, the backscattering coefficient (sigma0) response of land surfaces depends on both the incidence and azimuth angle under which the observations are made.
Z. Bartalis, K. Scipal, W. Wagner
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