Integrated reservoir characterization using high definition frequency decomposition, multi-attribute analysis and forward modelling. Chandon discovery, Australia.

First Break ◽  
2019 ◽  
Vol 37 (3) ◽  
pp. 65-74
Author(s):  
A. Mantilla ◽  
P. Szafian ◽  
R. Bell ◽  
C. Han
Keyword(s):  
Reservoir Characterization ◽  
Forward Modelling ◽  
High Definition ◽  
Frequency Decomposition ◽  
Attribute Analysis

scholarly journals Characterizing carbonate facies using high-definition frequency decomposition: Case study from North West Australia

2017 ◽  
Vol 5 (3) ◽  
pp. SJ49-SJ59
Author(s):  
Mohammed Al-Maghlouth ◽  
Peter Szafian ◽  
Rebecca Bell
Keyword(s):  
Matching Pursuit ◽  
Carbonate Facies ◽  
High Definition ◽  
Coherent Noise ◽  
Sedimentary Processes ◽  
North West ◽  
Frequency Decomposition ◽  
Facies Classification ◽  
Barrier Reefs ◽  
Northern Carnarvon Basin

Carbonate facies identification is difficult using conventional seismic attributes due to subtle lithologic changes that cannot be easily recognized. Therefore, there is a need to develop new methodologies to study their evolution and their associated sedimentary processes, which will eventually lead to better prediction for reservoir-quality rocks. New insights into the Cenozoic carbonates in North West Australia have been captured with the application of a high-definition seismic attribute workflow. The workflow starts with conditioning of the seismic volume using structurally oriented noise attenuation filters to remove any random and coherent noise from the input data. It also benefits from a high-definition frequency decomposition that matches the original seismic resolution without smearing interfaces using a “matching pursuit” algorithm. A color blend of multigeometric attributes, such as semblance and conformance, has also been used in the workflow to define edges and discontinuities present in the data within carbonate deposits that are attributed to depositional geometries, such as barrier reefs. Our workflow has been developed to investigate the geomorphology and the sedimentary processes affecting Cenozoic successions in the Northern Carnarvon Basin in North West Australia. Geomorphological and sedimentological observations have been documented such as an Eocene rounded carbonate ramp with evidence of slump blocks and scarps, Middle Miocene accretions generated due to longshore drift, and the presence of Pliocene-Pleistocene patch and barrier reefs. These observations were extracted as geobodies to allow for visualization, and they can be used in an automated seismically based facies classification scheme. The new appreciations are not only useful for understanding the carbonate evolution but can also be used to identify geohazards such as slumps ahead of future drilling.

Seismic Attribute Analysis Role in Reservoir Characterization - A Successful Application to a Giant Offshore Carbonate Field Abu Dhabi, UAE

2010 ◽  
Author(s):  
Jie Zhang ◽  
Akmal Awais Sultan ◽  
Naeema Ahmed Khouri ◽  
Joseph M. Reilly ◽  
Raed El-Awawdeh ◽  
...  
Keyword(s):  
Reservoir Characterization ◽  
Abu Dhabi ◽  
Seismic Attribute ◽  
Attribute Analysis

Offset vector tile domain wide-azimuth prestack seismic interpretation methods and applications

2018 ◽  
Vol 6 (2) ◽  
pp. T337-T347
Author(s):  
Zhan Shifan ◽  
Chen Maoshan ◽  
Li Lei ◽  
Tao Chunfeng ◽  
Wan Zhonghong ◽  
...  
Keyword(s):  
Reservoir Characterization ◽  
Incidence Angle ◽  
Signal To Noise Ratio ◽  
Seismic Interpretation ◽  
Azimuthal Anisotropy ◽  
Signal To Noise ◽  
Attribute Analysis ◽  
Key Techniques ◽  
Fluid Detection ◽  
Amplitude Versus

The offset vector tile (OVT) is a special prestack seismic gather type, and OVT technology is a seismic processing technology suitable for wide-azimuth seismic (WAZ) exploration. Because current WAZ interpretation is not yet mature and because of the lack of key techniques and tools for OVT-domain seismic interpretation, abundant offset and azimuth information possessed in the OVT gathers has not been fully used. To take full advantage of the OVT gathers to achieve more accurate geologic, reservoir, and fluid information, we have developed an OVT-domain wide-azimuth prestack seismic interpretation technology and a typical workflow. The OVT-domain wide-azimuth prestack seismic interpretation technology is composed of five key prestack analysis and interpretation techniques focused on OVT gathers: (1) sensitive offset and azimuth analysis for choosing their sensitive offset and azimuth ranges, (2) template-based OVT gather optimization for improving their signal-to-noise ratio and quality, (3) multiscale and multiazimuth attribute analysis, (4) OVT domain amplitude versus incidence angle analysis, and (5) azimuthal anisotropy analysis. These technologies are used to extract seismic attributes that vary with offset and/or azimuth from OVT gathers facing on reservoir characterization, fluid detection, and fracture prediction. These technologies can form an OVT-domain prestack seismic interpretation workflow.

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