SPE Reservoir Evaluation & Engineering
Volume 13,
Number 3,
June 2010,
pp. 438-448
Summary
Sulfate scaling in offshore waterflood projects, in which sulfate from the
injected seawater (SW) reacts with metals from the formation water (FW),
forming salt deposit that reduces permeability and well productivity, is a well
known phenomenon. Its reliable prediction is based on mathematical models with
well-known parameters.
Previous research presents methods for laboratory determination of model
coefficients using breakthrough concentration during coreflooding. The
concentration measurements are complex and cumbersome, while the pressure
measurements are simple and require standard laboratory equipment. In the
present work, a new laboratory method is developed for determination of the
model coefficients from pressure measurements. Several laboratory corefloods
have been performed. The tests show that the proposed method is more precise
for artificial cores than for the natural reservoir cores. Further development
of the method is required to determine parameters of formation damage caused by
sulfate scaling for reservoir core samples.
© 2010. Society of Petroleum Engineers
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History
- Original manuscript received:
19 November 2007
- Meeting paper published:
14 February 2008
- Revised manuscript received:
9 October 2009
- Manuscript approved:
28 October 2009
- Published online:
8 June 2010
- Version of record:
22 June 2010
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