Aprovider of open source seismic interpretation software to the oil and gas industry, dGB Earth Sciences, and Argentinean geosciences company, Geoinfo SRL have launched a new OpendTect plug-in for the incorporation of petrophysical properties into the seismic interpretation process.
The CLAS (Computer Log Analysis Software) plug-in, developed by Geoinfo and through which well log petrophysics can be performed within OpendTect rather than having to be imported, will result in improved well-to-seismic ties, the enhanced calibration of seismic attributes to reservoir properties, more robust models, and the more accurate interpretation of 3D seismic data.
With CLAS, seismic interpreters can edit well logs and generate vital information on oil in place through data on the saturation, clay volume, porosity, lithology and fluid content of the reservoir. CLAS will also allow net pay to be estimated from seismic attributes and will be able to use dGB's neural networks plug-in to generate acoustic logs. The result will be the building of accurate models and improved acoustic and elastic impedance inversion.
Kristofer Tingdahl CEO of dGB Earth Sciences says: "This is a major step forward for OpendTect, enabling interpreters to combine seismic data with petrophysical data to provide an even more accurate characterization of the prospective reservoir."
He continues: "Whether it be horizon mapping, sequence stratigraphy, fluid migration or well logs, OpendTect and its plug-ins now combine the very best in seismic interpretation techniques with leading petrophysical analysis for improved interpretation and reduced drilling risk."
His words were backed up by Sigfrido Nielsen of Geoinfo SRL: "Reservoir characterisation today is all about relationships - the relationships between well log data and seismic and between seismic data and reservoir properties, such as saturation, clay volume and porosity. CLAS and OpendTect will allow interpreters to better understand these relationships and create a more complete picture of the reservoir."
Key features of the CLAS plug-in within OpendTect include:
- Simple and advanced LAS format data import including well parameters and run information.
- The ability to carry out log calculations, such as temperature curve generation, porosity calculation from cross plots, sonic log editing, and shale volume calculations.
- Sophisticated water saturation analysis.
- And the ability to generate accurate petrophysics-based reports.
dGB's OpendTect remains the only available open source seismic interpretation platform in the oil and gas industry today and an ideal platform for some of the most innovative seismic interpretation tools on the market. In addition to the CLAS plug-in, other plug-ins relate to attribute and processing analysis, horizon mapping, sequence stratigraphy, fluid migration, rock property predictions and velocity modeling.
dGB Earth Sciences is based in Enschede, The Netherlands. www.dgbes.com. Geoinfo SRL is based in Buenos Aires, Argentina. www.geoinfo.com.ar