| 摘要 |
<p>The invention relates to a process for hydrocarbons recovery from an underground deposit by underground combustion, during which the oxidation gas is injected through a vertical bore hole while the fluid extraction is made through a bore hole in the shape of a reversed L. According to the invention, the process consists in injecting an oxidation gas through at least one vertical bore hole within or in the vicinity of the vertical section of a production well bore hole having the shape of a reversed L, creating a vertical combustion front which advances to the top of a horizontal section of the production well which makes the hydrocarbons in the deposit, above the horizontal portion, run up and liquefy, further on they running down to the permeable horizontal portion wherefrom the said hydrocarbons are extracted through a pipe string placed within the production bore hole where a pipe string for the injection of a non-oxidating gas into the bottom area of the horizontal portion is also placed, the injection and production wells being adjacent in front of the vertical portion of the production well.</p> |
