Technical Library

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Orthogonal Wide Azimuth Surveys: Acquisition and Imaging

21 September 2011
We present results from a case study being performed in the Gulf of Mexico (GoM) that utilizes two orthogonal Wide Azimuth (WAZ) surveys to create an.
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Maximizing Throughput for High Performance TTI-RTM: From CPU-RTM to GPU-RTM

19 September 2011
The implementation and production application of fast Reverse Time Migration (RTM) algorithms, especially for Tilted Transverse Isotropic (TTI) medium, is.
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Layer-stripping RTM based on wavefield redatuming

17 September 2011
Tilted Transverse Isotropic (TTI) Reverse Time Migration (RTM) is routinely used for depth velocity model building. To improve the efficiency of RTM we.
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Improved subsalt imaging using TTI anisotropy and reverse time migration scans

17 September 2011
We present an advanced velocity model building and imaging methodology that resulted in significant enhancements in defining the salt flanks with.
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Imaging the Hoop Fault Complex via horizon and fault constrained tomography

16 September 2011
The Hoop Fault complex in the Southwestern Barents Sea presents an imaging challenge to accurately model the sharp velocity contrast across a major fault.
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Expanding domain methods in GPU based TTI reverse time migration

16 September 2011
Three expanding domain methods are studied which include: (1) constant velocity layer, (2) eikonal equation solver and (3) amplitude comparison. The layer.
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Detailed velocity model building in a carbonate karst zone and improving sub-karst images in the Gulf of Mexico

14 September 2011
A velocity anomaly zone with high contrasts and small wavelength variations is often a challenge for conventional depth imaging. It requires model details.
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Automatic RTM-based DIT scan picking for enhanced salt interpretation

13 September 2011
Delayed Imaging Time (DIT) scans based on Reverse Time Migration (RTM) are often used in production to update velocity models, particularly in subsalt or.
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Applications of Layer-Stripping RTM to Gulf of Mexico Imaging Projects

12 September 2011
We have applied layer-stripping Reverse Time Migration (RTM) to several Gulf of Mexico (GOM) depth imaging projects. The key element of layer-stripping.
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Merging multiple surveys before imaging

10 September 2011
We present a redatuming data regularization technique based on a 3D true azimuth Common Focusing Point (CFP) technique. It can effectively merge different.
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A case study: Improved subsalt imaging through TTI model building and imaging of a WAZ survey in the Gulf of Mexico

08 September 2011
Here we present a case study of improved subsalt imaging for a wide azimuth (WAZ) survey in the Mississippi Canyon/Atwater Valley area in the Gulf of.
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Anisotropic tomography for TTI and VTI media

06 September 2011
A simultaneous anisotropic tomographic inversion algorithm is developed. Check shot constraints and appropriate algorithm preconditioning play an.
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3D RTM angle gathers from source wave propagation direction and dip of reflector

03 September 2011
Creating an angle gather is a conceptually simple process of plotting reflection amplitudes along the angle. Reflection or opening angle can be directly.
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