Title:
METHOD AND COMPOSITIONS FOR RHEOLOGY MODIFICATION OF AQUEOUS SOLUBLE SALT SOLUTIONS
Document Type and Number:
WIPO Patent Application WO2005069829
Kind Code:
A3
Abstract:
A method of making a rheology modified aqueous salt solution includes adding thereto, a non-hydratable clay, as defined, and at least one compound capable of contributing, in solution, a divalent metal cation and a trivalent metal cation; and then adjusting the pH to a specific range. A dry composition comprising at least one compound capable of contributing the designated cations and, optionally, the non-hydratable clay is also disclosed. This invention is particularly applicable to drilling fluids, and more particulady to such fluids used in coastal and deepsea drillsites where the presence of salinity has been known to significantly reduce the effectiveness of clays as thickening agents.
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Inventors:
HOY EDGAR FRANKLIN (US)
Application Number:
PCT/US2005/001118
Publication Date:
September 28, 2006
Filing Date:
January 13, 2005
Export Citation:
Assignee:
HOY EDGAR FRANKLIN (US)
International Classes:
C09K8/05; B01F3/08; B01J13/00; C09K8/14
Foreign References:
US2606839A | 1952-08-12 | |||
US4631091A | 1986-12-23 | |||
US3148970A | 1964-09-15 |
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