Cenovus Energy Inc.
METHODS FOR PRODUCING HYDROCARBONS FROM THIN, HETEROGENOUS PAY RESERVOIRS

Abstract:

Disclosed herein is a method of producing hydrocarbons from a subterranean reservoir, the method comprising: penetrating at least a portion of the subterranean reservoir with a first well and a second well, positioning an annulus-flow restrictor within the substantially-horizontal section of the first well at a distance, d.sub.1, from a produced-fluid inlet of the second well, injecting mobilizing fluid into the subterranean reservoir via a mobilizing-fluid injection outlet of the first well to mobilize hydrocarbons therewithin, and producing mobilized hydrocarbons from the subterranean reservoir via the produced-fluid inlet. The method further comprises positioning an annulus-flow restrictor within the substantially-horizontal section of the first well at a distance, d.sub.2, from the produced-fluid inlet such that d.sub.2<d.sub.1, injecting mobilizing fluid into the subterranean reservoir via the mobilizing-fluid injection outlet of the first well to mobilize hydrocarbons therewithin, and producing mobilized hydrocarbons from the subterranean reservoir via the produced-fluid inlet.