Fluid content effect on acoustic impedance and limits of direct detection capability : illustrated on an offshore prospect

The presence of gas and oil in some sand formations decreases the seismic velocity and density to such an extent that anomalously large reflections coefficients are encountered at fluid contacts. Geerstma and Gassmann's theories are equivalent and provide a good way to study the physical properties that affect the elastic behavior of the porous rock. The fluid-contact reflectivity (gas-water, oil-water) can be well estimated based on the brine saturated velocity alone. A comparison between the estimated and observed fluid-contact reflectivities on seismic and well log data from an Offshore prospect showed a remarkable agreement.

Name thesis:degree_name

Master of Arts

Level thesis:degree_level

Masters

Discipline thesis:degree_discipline

Geology/Geological Sciences

Grantor

The University of Texas at Austin

Year dc:date.issued

1980

Author dc:creator

• Catto, Antonio José

Advisor dc:contributor.advisor

• Backus, Milo M., 1932-

Statement dc:rights

• Copyright is held by the author. Presentation of this material on the Libraries' web site by University Libraries, The University of Texas at Austin was made possible under a limited license grant from the author who has retained all copyrights in the works.

Language dc:language.iso

eng

Handle dc:identifier.uri

http://hdl.handle.net/2152/26894

OAI identifier oai:identifier

oai:repositories.lib.utexas.edu:2152/26894