Non-aqueous, acid soluble, high-density completion fluids and process
US9045675B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2012 |
| Grant date | Jun 2, 2015 |
| Priority date | — |
| Expiry date | Aug 13, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/64
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Disclosed herein is a method comprising displacing a first oil-based fluid present in an open hole interval of a wellbore with a second fluid; and contacting the second fluid with an acidic indigenous formation fluid to produce a third fluid wherein the second fluid an aqueous fluid dispersed as a discontinuous phase within an oleaginous fluid, and an amine surfactant, wherein the amine surfactant is selected such that contacting the second fluid with indigenous fluid protonates at least a portion of the amine surfactant in the second fluid to produce the third fluid comprising an emulsion comprising the oleaginous fluid reversibly dispersed as a discontinuous phase within the aqueous fluid. A system for treating a subterranean well and a fluid are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.