Single well stream assisted gravity drainage

摘要

A method for recovering hydrocarbons from a sub-surface reservoir having present therein a wellbore in which a production conduit and an injection conduit are located includes injecting a heating fluid into the reservoir via said injection conduit where the heating fluid is released via a plurality of discrete permeable sections located along the length of the injection conduit and produced hydrocarbons are collected via a plurality of discrete permeable sections located along the length of the production conduit.

主权项

1. A method for recovering hydrocarbons from a sub-surface reservoir having present therein a wellbore in which a production conduit and an injection conduit are located, said method comprising injecting a heating fluid into the reservoir via said injection conduit, wherein said heating fluid is released via a plurality of discrete permeable sections located along the length of the injection conduit and produced hydrocarbons are collected via a plurality of discrete permeable sections located along the length of the production conduit,
wherein said permeable sections located on the production conduit and permeable sections located on the injection conduit are staggered in relation to one another such that the permeable sections located along the length of the injection conduit are never position directly above, never position directly below and never positioned directly beside the permeable sections located along the length of the production conduit, and wherein the longitudinal axis of the injection conduit is parallel to the longitudinal axis of the production conduit.