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Application of boron isotopes to the understanding of fluid–rock interactions in a hydrothermally stimulated oil reservoir in the Alberta Basin, Canada by L. B. Williams; M. E. Wieser; J. Fennell; I. Hutcheon; R. L. Hervig is a Engineering article available to read on EtoBox.

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## Abstract Boron isotope ratios of reservoir minerals and fluids can be a useful geothermometer and monitor of fluid–rock interactions. In Cold Lake oil sands of northern Alberta, there is a large variation in δ^11^B of the produced waters generated during steam injection and recovery of oil and water. The higher temperature waters (∼ 200 °C) have isotopically light δ^11^B values (+ 3‰ to + 14‰) and high B contents (∼150 p.p.m.). It is inferred that the range of δ^11^B values of the hydrothermal fluids results from reaction with the reservoir rock, and is a function of the temperature of the fluid–rock interaction. The distinct B geochemistry of the produced waters can be used to show that there is no detectable mixing of the oil recovery waters with the regional formation waters or shallow groundwater aquifers containing potable water. Examination of B isotope ratios of reservoir minerals, before and after steam injection, allows the evaluation of sources of B in the reservoir. The only significant phase containing B is pumice. It shows generally positive δ^11^B values before steam injection and negative values after steam, with δ^11^B as low as − 28‰. Other possibly reactive pha

Who reads Application of boron isotopes to the understanding of fluid–rock interactions in a hydrothermally stimulated oil reservoir in the Alberta Basin, Canada?

Author

L. B. Williams; M. E. Wieser; J. Fennell; I. Hutcheon; R. L. Hervig

Publisher

John Wiley and Sons; Hindawi Limited; Wiley (ISSN 1468-8115)

Published

2001

Language

EN

Field

Engineering (Physical Sciences)