Patent · US Active

Water-based drilling fluid

US7833946B2 · kind B2 · utility

1Cited by
29References
10Claims
0Family size

Assignee

Inventor

Key dates

Filing dateFeb 7, 2008
Grant dateNov 16, 2010
Priority date—
Expiry dateSep 1, 2028

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC09K8/12
  • WIPO fieldBasic materials chemistry
  • WIPO sectorChemistry

Abstract

A water based drilling fluid contains as additive one or more alkyl ethoxylates having the formula RO(CH2CH2O)nH; The fluid further contains one or more viscosifying agents, and is substantially clay-free.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.