Detecting reservoir fractures and their orientation using multi azimuth walkaway VSP
Event name: 9th International Congress of the Brazilian Geophysical Society
Session: VSP, Crosswell & Downhole Migration
Publication date: 11 September 2005
Info: Extended abstract, PDF ( 184.32Kb )
Four walkaway VSP lines were acquired in the Kashagan East 1 well located in the Caspian Sea. Fracture orientations in the reservoir were obtained by acquiring data from multi azimuths and offsets recorded with several 3-component geophones lowered into the carbonate zone. Orientations were detected by interpreting the polarization of the fast and slow shear waves (figure 1) observed in the horizontal geophone component data.