(19)
(11) EP 2 431 567 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
04.04.2012 Bulletin 2012/14

(43) Date of publication A2:
21.03.2012 Bulletin 2012/12

(21) Application number: 11181541.1

(22) Date of filing: 16.09.2011
(51) International Patent Classification (IPC): 
E21B 43/16(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 17.09.2010 US 384121 P

(71) Applicant: Shell Internationale Research Maatschappij B.V.
2596 HR The Hague (NL)

(72) Inventors:
  • Frajzadeh, Rouhollah
    2288 GS Rijswijk (NL)
  • Wassing, Leonardus Bartholomeus Maria
    2288 GS Rijswijk (NL)

(74) Representative: Matthezing, Robert Maarten 
Shell International B.V. Intellectual Property Services P.O. Box 384
2501 CJ The Hague
2501 CJ The Hague (NL)

   


(54) Methods for producing oil and/or gas


(57) A method for producing oil from an underground formation (406) comprising injecting an enhanced oil recovery formulation into a first well (432) in the formation, the enhanced oil recovery formulation comprising a foam; floating the foam on top of the oil, in order to force the oil towards a second well (412) in the formation; and producing the oil and/or gas from the second well.







Search report