公开(公告)号：US20210180437A1

公开(公告)日：2021-06-17

申请号：US17187479

申请日：2021-02-26

Applicant: CONOCOPHILLIPS COMPANY

Inventor： Qing CHEN ,  Wendall P. Menard

IPC: E21B43/24

Abstract: Single well SAGD is improved by having one or more injection segments and two or more production segments between the toe end and the heel end of a flat, horizontal well. The additional injection points improve the rate of steam chamber development as well as the rate of production, as shown by simulations of a central injection segment bracketed by a pair of production segments (-P-I-P-), and by a pair of injection segments with three production segments (-P-I-P-I-P). Although the completion of the single well costs more, this configuration allows the development of thin plays that cannot be economically developed with traditional SAGD wellpairs.