| 摘要 |
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.
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