Patent · US Active

Process for mineral oil production using hydrophobically associating copolymers

US8939206B2 · kind B2 · utility

1Cited by

2References

17Claims

0Family size

Assignee

BASF SE

Inventors

Björn Langlotz · Trostberg, DE
Roland Reichenbach-Klinke · Traunstein, DE
Christian Spindler · Günzburg, DE
Benjamin Wenzke · Hamburg, DE

Key dates

Filing date	Nov 23, 2011
Grant date	Jan 27, 2015
Priority date	—
Expiry date	Aug 31, 2032

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B43/20
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A process for mineral oil production, in which an aqueous formulation comprising at least one water-soluble, hydrophobically associating copolymer is injected through at least one injection borehole into a mineral oil deposit, and crude oil is withdrawn from the deposit having a deposit temperature of 35° C. to 120° C., preferably 40° C. to 90° C., through at least one production borehole, wherein the water-soluble, hydrophobically associating copolymer comprises at least acrylamide or derivatives thereof, a monoethylenically unsaturated monomer having anionic groups and a monoethylenically unsaturated monomer which can bring about the association of the copolymer.

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