Method for removing calcium from crude oil
US8366915B2 · kind B2 · utility
5Cited by
4References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2008 |
| Grant date | Feb 5, 2013 |
| Priority date | — |
| Expiry date | Apr 14, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G53/10
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Methods for reducing calcium deposition along surfaces in contact with the water phase of a resolved water/oil emulsion are disclosed. High calcium crude oil and the like are contacted with a sequestrant to form a sequestered calcium containing complex that partitions to the water phase in the resolved emulsion. A specifically formulated polymeric deposit control agent is added to the water phase to inhibit calcium deposit formation therein and along surfaces in contact with the water phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.