Methods for producing oil and/or gas

(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.

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