Velocity Measurements of Pore Fluids at Pressure and Temperature : Application to bitumen

  • Rabbani A
  • Schmitt D
  • Nycz J
 et al. 
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Abstract

Summary;Time lapse geophysical imaging(e.g. 4D survey)of reservoirs require proper understanding of the saturating fluid’s behavior at ¡n situ conditions during hydrocarbon production. An adapted version of a pulse transmission technique for fluid is used to measure the ultrasonic velocity of highly viscous fluids. Pwave velocities ¡n bitumen decrease 28% as the temperature rises from 10°C (near virgin reservoir) to 13000. We apply these observed wave speeds and estimated fluid bulk moduli through Gassmann substitution in a porous dolomite to predict the changes in seismic reflectivity that would be observed with variations in temperature over a hypothetical bitumen saturated reservoir.

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Authors

  • Arif Rabbani

  • Douglas R Schmitt

  • Jason Nycz

  • Ken Gray

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