Global Patent Index - EP 1161616 A1

EP 1161616 A1 2001-12-12 - A METHOD FOR INCREASING RECOVERY OF HYDROCARBONS

Title (en)

A METHOD FOR INCREASING RECOVERY OF HYDROCARBONS

Title (de)

VERFAHREN ZUR ERHÖHUNG DER AUSBEUTE AN KOHLENWASSERSTOFFEN

Title (fr)

PROCEDE POUR AMELIORER LA RECUPERATION D'HYDROCARBURES

Publication

EP 1161616 A1 (EN)

Application

EP 00908135 A

Priority

  • NO 0000070 W
  • NO 991219 A

Abstract (en)

[origin: WO0055474A1] It has been aimed at disclosing a method which, in relation to prior art, ensures increased recovery of hydrocarbons from natural reservoirs (16, 18, 20) and where knowledge of reservoir conditions such as e.g. pressure and temperature has been provided. Based on these known reservoir conditions, hydrocarbon components in the form of light hydrocarbons which will appear in liquid phase at said reservoir conditions are provided and being injected in large amounts into the reservoir, e.g. within an area in an oil zone, beneath producing wells (22). By means of these light hydrocarbon components, the respective reservoir area is washed out, in that the components dissolve and attack themselves to and entrain washed out residual oil and/or other remaining heavier hydrocarbons for recovery. As the reservoir is gradually drained of hydrocarbons, the hydrocarbon liquid injection point/points is/are moved closer to the production well(s) (22), preferably concurrent with water being replenished.

IPC 1-7 (main, further and additional classification)

E21B 43/25; E21B 43/16

IPC 8 full level (invention and additional information)

E21B 43/16 (2006.01); E21B 43/20 (2006.01)

CPC (invention and additional information)

E21B 43/20 (2013.01); E21B 43/16 (2013.01); E21B 43/166 (2013.01)

Citation (search report)

See references of WO 0055474A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU

EPO simple patent family

WO 0055474 A1 20000921; AU 2950700 A 20001004; EP 1161616 A1 20011212; NO 309538 B1 20010212; NO 991219 A 20000913; NO 991219 D0 19990312

INPADOC legal status


2004-04-14 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20031008

2003-07-09 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20030527

2001-12-12 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20010910

2001-12-12 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU

2001-12-12 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Free text: AL;LT;LV;MK;RO;SI