Spotting fluid compositions and associated methods
US8048828B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 18, 2005 |
| Grant date | Nov 1, 2011 |
| Priority date | — |
| Expiry date | Mar 18, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Fluids and associated methods useful in subterranean applications are provided. More particularly, methods of reducing drill string sticking are provided, which include: providing a spotting fluid composition comprising a water insoluble external phase fluid, a water soluble internal phase fluid, and an ether carboxylic acid emulsifying agent; introducing the spotting fluid to the vicinity of a desired portion of a drill string; and allowing the spotting fluid to interact with a portion of material surrounding the desired portion of the drill string spotting fluid. Compositions are provided that may be useful in subterranean applications for addressing, among other things, drill string sticking problems. Additional optional components may be used, such as viscosifiers, weighting agents, and wetting agents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.