公开(公告)号：US09845668B2

公开(公告)日：2017-12-19

申请号：US13911542

申请日：2013-06-06

Applicant: CONOCOPHILLIPS COMPANY

Inventor： Kate M. Ryan ,  Thomas J. Wheeler ,  John L. Stalder

IPC: E21B43/24 ,  E21B43/30

CPC classification number: E21B43/2406 ,  E21B43/305

Abstract: Methods and systems relate to recovering hydrocarbons with an injection well placed at a bottom of a reservoir some horizontal distance from a producer, such that the injection well and producer may both be in a common horizontal plane. For some embodiments, the process includes co-injection of steam with a non-condensable gas, such as methane, ethane, propane, carbon dioxide, combustion products and combinations thereof. The non-condensable gas provides additional solution gas drive while the location of the injection well beside, instead of above, the producer increases production time before a steam chamber reaches a top of the reservoir, increasing thermal and recovery efficiency of the process.