Method of drilling boreholes with invert emulsion drilling fluids having enhanced rheology
US9296937B2 · kind B2 · utility
6Cited by
2References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 9, 2013 |
| Grant date | Mar 29, 2016 |
| Priority date | — |
| Expiry date | Nov 2, 2033 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/16
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An invert emulsion drilling fluid, and a method of drilling with such fluid, having improved rheology effected with addition of a fatty dimer diamine additive in the presence of little or no lime. The drilling fluids of the present invention exhibit similar yield points and gel strengths at temperatures ranging from about 40° F. to about 375° F. or higher and at pressures ranging from about 0 psi to about 13500 psi.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.