Newly discovered equilibrium controls HF stoichiometry
Conference
·
OSTI ID:166583
The standard description of HF acidizing chemistry suggests a stoichiometry that has been found to be deficient. This paper describes the discovery of a chemical equilibrium between silicon fluorides, aluminum fluorides, and HCl that controls the {open_quotes}reactivity ratios{close_quotes} or stoichiometry of the primary and secondary reactions of HF acid. The significance of the discovery is that it allows accurate predictions of effluent compositions in laboratory flow tests. This discovery is also consistent with returns analyses from HF treatments recently reported in the literature. The discovery and determination of the equilibrium expression was made possible as the result of recently applied experimental techniques including {sup 19}F NMR spectroscopy and fractional pore volume flow experiments. An accurate description of the stoichiometry of the HF acidizing process is presented and verified with laboratory flow experiments and batch tests.
- OSTI ID:
- 166583
- Report Number(s):
- CONF-951002--
- Country of Publication:
- United States
- Language:
- English
Similar Records
Newly discovered equilibrium controls HF stoichiometry
Determination of the chemistry of HF acidizing with the use of {sup 19}F NMR spectroscopy
HF acidizing returns analyses provide understanding of HF reactions
Journal Article
·
Wed Jan 31 23:00:00 EST 1996
· JPT, Journal of Petroleum Technology
·
OSTI ID:205538
Determination of the chemistry of HF acidizing with the use of {sup 19}F NMR spectroscopy
Book
·
Tue Oct 31 23:00:00 EST 1995
·
OSTI ID:113546
HF acidizing returns analyses provide understanding of HF reactions
Conference
·
Sat Dec 30 23:00:00 EST 1995
·
OSTI ID:379624