What Causes those Annoying Stair Step Artifacts on Coherence Volumes?  
By Kurt Marfurt, Tengfei Lin / March 2017

Since its original introduction 20 years ago, coherence remains, along with bright spots, to be one of the most popular seismic attributes used by interpreters.

Enhancing Seismic Discontinuity Attributes with Creative Workflows  
By Satinder Chopra, Kurt Marfurt / February 2017

Seismic discontinuity attributes such as coherence and curvature are routinely applied to 3-D seismic data volumes to delineate faults or fractures, channel and reef edges, and other geological features.

Deciphering Seismic Amplitude Language  
By Luis Vernengo, Eduardo Trinchero, Satinder Chopra / January 2017

Interpretation of seismic amplitude anomalies could be a direct solution to finding hydrocarbons, or defining lithology, but is usually a tricky problem.

Benefits from Pattern Recognition and Visualization  
By Tao Zhao, Kurt Marfurt / December 2016

Recent developments in pattern recognition-based seismic facies classification (clustering) provide a means to analyze multiple seismic attributes in a single volume.

Enhancing the Quality of Seismic Impedance Data  
By Satinder Chopra, Ritesh Sharma, Rebecca Daniels, Brian Schulte, Jim Pullishy, Tammy Chow / November 2016

Raw seismic data are almost always found to be contaminated with coherent or incoherent noise. Concerted efforts are directed at elimination of such noise during processing of the seismic data, so that its interpretation can be carried out accurately.

Interpreting Fault and Fracture Lineaments with Euler Curvature  
By Satinder Chopra, Kurt Marfurt / October 2016

Geometric attributes such as coherence and curvature are commonly used for mapping faults, joints and large fractures, or fault damage zones.

Improving Resolution and Clarity With Neural Networks  
By Christopher P. Ross / September 2016

Using supervised neural networks for mapping reservoir properties can improve resolution as demonstrated by the PNN Zp inversion, or using such networks for classifying variable lithologies can improve clarity as established by the seismic object detection result.

Volumetric Fault Enhancement Applications  
By Satinder Chopra, Kurt Marfurt / August 2016

Coherence is an iconic attribute available on most interpretation workstations and it helps with the characterization of small and large-scale faults, large structures, fault truncations, buried channels, reef edges and unconformities. There are various algorithms available for coherence computation, each having its advantages and limitations in terms of the quality of coherence imaging of the features of interest and run times associated with them.

Structure-preserving 6-D Interpolation  
By Mark Ng, Dan Negut / July 2016

Interpolation of seismic data is an important application in exploration seismic signal processing. The need for interpolation on incomplete data may be due to acquisition limitations, economic constraints or regularizing of merged data with a variety of shooting parameters from different vintages.

Extracting Large-Scale Fracture Networks  
By Ayon Kumar Dey / June 2016

This work demonstrates a modern workflow that directly extracts high-resolution, large-scale fracture networks from seismic inversion-based structural attributes. The workflow is successfully applied to a thrust-belt controlled, lower Triassic, siltstone reservoir in the Montney Formation of the Farrell Creek area in northeast British Columbia to extract a 3-D fracture network orthogonal to the primary stress direction.

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Geophysical Corner

Geophysical Corner - Satinder Chopra
Satinder Chopra, award-winning chief geophysicist (reservoir), at Arcis Seismic Solutions, Calgary, Canada, and a past AAPG-SEG Joint Distinguished Lecturer began serving as the editor of the Geophysical Corner column in 2012.

Geophysical Corner

The Geophysical Corner is a regular column in the EXPLORER that features geophysical case studies, techniques and application to the petroleum industry.

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