Patent · US Expired

Scale removal

US6924253B2 · kind B2 · utility

25Cited by

27References

7Claims

0Family size

Inventors

Bentley J. Palmer · Phoenix, US
Diankui Fu · Missouri City, US
Roger J. Card · Paris, FR
Matthew J. Miller · Carlsbad, US

Key dates

Filing date	Apr 9, 2001
Grant date	Aug 2, 2005
Priority date	—
Expiry date	Jun 8, 2022

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S507/927
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A method for treating a wellbore (or well casing) and the contiguous wellbore area to remove scale (mineral deposits comprised of, e.g., BaSO4, CaCO3, etc.) in the context of hydrocarbon recovery and other applications is disclosed, said method including contacting the scale with a fluid comprised of an ionic liquid or liquids.

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