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Mechanisms of mineral scaling in oil and geothermal wells studied in laboratory experiments by nuclear techniques.
- Source :
-
Czechoslovak Journal of Physics . Dec2006 Supplement 4, Vol. 56 Issue 4, pD405-D416. 12p. - Publication Year :
- 2006
-
Abstract
- Two independent nuclear methods have been developed and tested for studies of mineral scaling mechanisms and kinetics related to the oil and geothermal industry. The first is a gamma transmission method to measure mass increase with a 30 MBq source of 133Ba. The other method applies radioactive tracers of one or more of the scaling components. CaCO3-precipitation has been used as an example here where the main tracer has been 47Ca2+. While the transmission method is an indirect method, the latter is a direct method where the reactions of specific components may be studied. Both methods are on-line, continuous and non-destructive, and capable to study scaling of liquids with saturation ratios approaching the solubility product. A lower limit for detection of CaCO3 with the transmission method in sand-packed columns with otherwise reasonable experimental parameters is estimated to be < 1 mg in a 1 cm section of the tube packed with silica sand while the lower limit of detection for the tracer method with reasonable experimental parameters is estimated to < 1 µg in the same tube section. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00114626
- Volume :
- 56
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Czechoslovak Journal of Physics
- Publication Type :
- Academic Journal
- Accession number :
- 156859045
- Full Text :
- https://doi.org/10.1007/s10582-006-0531-6