Patent · US Active

Method of treating subterranean formation with crosslinked polymer fluid

US8003577B2 · kind B2 · utility

28Cited by

9References

17Claims

0Family size

Assignee

SCHLUMBERGER TECHNOLOGY CORPORATION · US

Inventors

Leiming Li · Sugar Land, US
Paul R. Howard · Sugar Land, US
Carlos Abad · Richmond, US
Michael D. Parris · Richmond, US
Lijun Lin · Sugar Land, US
Andrey Mirakyan · Katy, US
Richard D. Hutchins · Placentia, US
Baudel William Quintero · Friendswood, US

Key dates

Filing date	Mar 22, 2007
Grant date	Aug 23, 2011
Priority date	—
Expiry date	Feb 9, 2029

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09K8/90
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A method of treating a subterranean formation penetrated by a wellbore utilizes a treating fluid formed from an aqueous solution of a water-soluble polymer. The treating fluid further contains a crosslinking agent and an optional delayed release alkaline additive. The delayed release alkaline additive may be at least one of urea, a urea derivative, a solid alkaline earth metal carbonate, a solid alkaline earth metal oxide and combinations of these. The treating fluid further includes an acidic pH adjusting agent used in an amount to provide the treating fluid with a pH of less than about 5. The treating fluid is then introduced into the formation.

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