Methods of servicing a wellbore with compositions comprising Sorel cements and oil based fluids
US7350575B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 2007 |
| Grant date | Apr 1, 2008 |
| Priority date | — |
| Expiry date | Jan 11, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/467
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method of servicing a wellbore in contact with a subterranean formation comprising placing in the wellbore a composition comprising a metal oxide, a soluble salt, a surfactant and an oleaginous fluid, and allowing the composition to set. A method of cementing a wellbore comprising placing a first composition comprising magnesium oxide, a chloride or phosphate salt, an organophilic surfactant and an oleaginous fluid into a wellbore, allowing the composition to set, placing a second cementitious composition into the wellbore, and allowing the second cementitious composition to set. A method of servicing a wellbore comprising placing in the wellbore a composition comprising magnesium oxide, magnesium chloride, an organophilic surfactant, water and an oleaginous fluid wherein the organophilic surfactant is present in an amount of from about 0.25% to about 5% base on the combined weight of the magnesium oxide and magnesium chloride, and the oleaginous fluid is present in a ratio of from about 95:5 cement:oleaginous fluid to about 50:50 cement:oleaginous fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.