[12] Patent
[11] Patent No.:GC0007535  
[45] Date of Publishing the Grant of the Patent: 30/Apr /2018                48/2018  
Number of the Decision to Grant the Patent:2018/125760
Date of the Decision to Grant the Patent:08/Apr/2018

[21] Application No.:GC 2014-28140

[22] Filing Date:21/10/2014

[30] Priority:

[33] State [32] Priority date [31] Priority No.
US
23/10/2013
61/894,675

[72] Inventors:1- SUIJKERBUIJK Bartholomeus Marinus Josephus Maria،2- BOERSMA Diederik Michiel،3- JANSSEN Albert Joseph Hendrik

[73] Owner: Shell Internationale Research Maatschappij B.V, Carel van Bylandtlaan 30, 2596 HR , Hague, Netherlands

[74] Agent: Saba & Co. T.M.P

  

 

  

[51]IPC:
Int. Cl.: C09K 8/58; E21B 43/22 (2006.01)

[56] Cited Documents:

-EP 2 882 933 A1 (SHELL INT RESEARCH [NL])17 June 2015
-US 3 908 764 A (HARVEY ROBERT R)30 September 1975
 
Examiner: Eng. Ebrahim AlQurashi

[54] PROCESS FOR REDUCING VISCOSITY OF POLYMER-CONTAINING FLUID PRODUCED IN THE RECOVERY OF OIL
[57] Abstract: The present invention is directed to a process for producing a fluid containing oil and water from an oil-bearing formation and separating an oil phase and an aqueous phase from the produced fluid. An aqueous polymer mixture is formed by mixing polymer in water having a total dissolved solids content of from 200 ppm to 15,000 ppm. The aqueous polymer mixture is injected into an oil-bearing formation, and, after injecting the aqueous polymer mixture into the formation, a fluid is produced from the oil-bearing formation containing an oil phase and an aqueous polymer-containing phase. Brine is mixed with the produced fluid to enhance separation of the oil phase from the aqueous polymer phase.
No. of claims: 10     No. of figures: 8


 

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