Drilling fluid methods and composition
US5007489A · kind A · utility
66Cited by
9References
53Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 27, 1990 |
| Grant date | Apr 16, 1991 |
| Priority date | — |
| Expiry date | Apr 27, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method is provided for the prevention of balling of formation cuttings upon the surface of drilling equipment and for lubrication of said equipment used in conjunction with subterranean well operations. An aqueous system is prepared to which is added a composition of a water insoluble polyglycol having a molecular weight of from between about 1,200 and about 10,000, an emulsifying surfactant having a hydrophilic/hydrophobic balance of about 4 or more, and a hydrotrope. An additive for use in the method also is disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.