公开(公告)号：CA3064487A1

公开(公告)日：2018-12-06

申请号：CA3064487

申请日：2018-05-16

Applicant: BASF SE

Inventor： BITTNER CHRISTIAN ,  OETTER GUENTER ,  SPINDLER CHRISTIAN ,  BULLIEN HANS ,  LEY DAVID ,  SIGGEL LORENZ

IPC: C09K8/584 ,  C11D1/06 ,  C11D1/62 ,  C11D1/65 ,  C11D1/74 ,  C11D1/90

Abstract: The invention relates to a method for extracting petroleum from underground oil reservoirs, wherein an aqueous, salt-containing surfactant formulation comprising a surfactant mixture for lowering the interfacial tension between oil and water to

公开(公告)号：CA2896186A1

公开(公告)日：2014-07-31

申请号：CA2896186

申请日：2014-01-15

Applicant: WINTERSHALL HOLDING GMBH ,  BASF SE

Inventor： KIMURA RIICHIRO ,  MAURER STEFAN ,  PARVULESCU ANDREI-NICOLAE ,  SIGGEL LORENZ ,  MULLER ULRICH ,  FRECHEN THOMAS ,  HINRICHSEN BERND

IPC: C09K8/58 ,  A61K8/34 ,  B01J13/16 ,  C09K8/26

Abstract: The present invention relates to a process for recovering oil from a subterranean formation by injecting both solid particles and water into the formation. An oil-in-water emulsion that is stabilized by solid particles is formed in the pores of the formation. This emulsion is recovered from the subterranean formation.