Technical Meeting and Luncheon: Tuesday, November 10, 2015

Where: The Petroleum Club of Lafayette

When: 11:30am

Lunch: $20.00 for members ** Be Sure to Bring Your 2015-2016 Membership Dues!**

Luncheon Talks:  

Multi-Attribute Rotation Scheme (MARS) – A tool for reservoir property prediction from seismic inversion attributes.

Pedro Alvarez (RSI) & Francisco Bolivar (RSI)


The multi-attribute rotation scheme (MARS) is a methodology that uses a numerical solution to estimate a transform to predict petrophysical properties from elastic attributes.  This is achieved by estimating a new attribute in the direction of maximum change of a target property in an n-dimensional Euclidean space formed by n-number of attributes, and subsequent scaling of this attribute to the target unit properties. The transform is computed from well-log-derived elastic attributes and petrophysical properties, and posteriorly applied to seismically-derived elastic attributes.  Such transforms can be used to estimate reservoir property volumes for reservoir characterization and delineation in exploration and production settings, and to estimate secondary variables in geostatistical workflows for static model generation and reserve estimation.  To illustrate the methodology, MARS was applied to estimate a transform to predict water saturation and total porosity from elastic attributes in a well located in the Barents Sea, as well as, to estimate a water saturation volume in a mud-rich turbidite gas reservoir located onshore Colombia.



Pedro Alvarez holds a B.S. degree in Geophysical Engineering from Universidad Central de Venezuela (2002), ranking first in his class. He holds an M.S. degree in Petroleum Geophysics, from Instituto Superior de la Energia/Heriot-Watt University (2007). He worked for eight year as Seismic Interpreter and Reservoir Geophysicist for PDVSA focusing in structural and quantitative seismic interpretation of clastic and carbonate reservoirs. Since 2012 he has been working for RSI, where he currently has the position of Team Lead/Sr. QI Geoscientist. In this position his main responsibility is the quantitative interpretation of post-stack, AVO, seismic inversion and CSEM attributes using a geological, geostatistical and rock physics framework. He has experience working in projects from Venezuela, Colombia, Mexico, USA, Australia, Falkland Island, Middle-East and Norway. He is member of the SEG, AAPG and EAGE.


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