Title:
PROCESS FOR OIL RECOVERY
Document Type and Number:
WIPO Patent Application WO/2017/161554
Kind Code:
A1
Abstract:
A process for recovering oil by injecting an enhanced oil recovery formulation comprising of from 60 to 90 ％by weight of carbon dioxide and of from 10 to 40 ％by weight of dimethyl ether comprising (i) reacting carbon with oxygen in the presence of steam to obtain a reaction product containing hydrogen, carbon monoxide, carbon dioxide and steam, (ii) optionally combining carbon monoxide obtained in step (i) with further steam to obtain a reaction product containing carbon dioxide and hydrogen, (iii) separating carbon monoxide and hydrogen from the product of step (i) and optionally hydrogen from the product of step (ii) and reacting hydrogen and carbon monoxide to obtain dimethyl ether, and (iv) injecting enhanced oil recovery formulation comprising dimethyl ether obtained in step (iii) and carbon dioxide obtained in step (i) and optionally step (ii).
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Inventors:
WEI LINGLI (CN)
Application Number:
PCT/CN2016/077325
Publication Date:
September 28, 2017
Filing Date:
March 25, 2016
Export Citation:
Assignee:
SHELL INT RESEARCH (NL)
WEI LINGLI (CN)
WEI LINGLI (CN)
International Classes:
E21B43/16; C10L3/06
Domestic Patent References:
| WO2010002693A2 | 2010-01-07 | |||
| WO2008125556A1 | 2008-10-23 | |||
| WO2009130292A2 | 2009-10-29 | |||
| WO2013106156A1 | 2013-07-18 |
Foreign References:
| US20110014088A1 | 2011-01-20 | |||
| US20110290703A1 | 2011-12-01 |
Attorney, Agent or Firm:
CCPIT PATENT AND TRADEMARK LAW OFFICE (CN)
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