Patent · US Active

Anti-accretion agents for drilling fluids

US8932997B2 · kind B2 · utility

34Cited by

6References

10Claims

0Family size

Assignee

LAMBERTI SPA · IT

Inventors

Luigi Merli · Saronno, IT
Jacopo Franchini · Arese, IT
Pierangelo Pirovano · Cassano Magnago, IT
Mattia Ossola · Somma Lombardo, IT
Franco Federici · Busto Arsizio, IT
Dario Fornara · Novara, IT
Giuseppe Li Bassi · Varese, IT

Key dates

Filing date	May 18, 2009
Grant date	Jan 13, 2015
Priority date	—
Expiry date	Sep 14, 2030

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09K8/528
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Esters of alkanolamines with unsaturated, polyunsaturated or saturated C8-C36 monocarboxylic acids are additives for reducing accretion on drilling equipment (anti-accretion agents) to be used in drilling muds during drilling and completion of oil and gas wells.

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