公开(公告)号：US10648308B2

公开(公告)日：2020-05-12

申请号：US15968087

申请日：2018-05-01

Applicant: CONOCOPHILLIPS COMPANY

Inventor： Bo Chen ,  Thomas James Wheeler ,  Pradeep Ananth Govind

IPC: E21B43/24 ,  E21B43/16 ,  C09K8/594 ,  C09K8/592

Abstract: A variation of expanding solvent steam assisted gravity drainage (ES-SAGD) production of heavy oil wherein steam and hydrocarbon solvent are co-injected into a heavy oil reservoir and water, hydrocarbon solvent and heavy oil are produced by gravity drainage until the steam chamber is well developed or until oil recovery reaches about 20-30% of oil in place. At that time, the wells are switched to a lateral sweep using non-condensible gas (NSG) and steam co-injection, where more hydrocarbon solvent is recovered than is recovered with ES-SAGD used alone and where the cumulative steam to oil ratio is reduced over using -ES-SAGD alone.

公开(公告)号：US10370949B2

公开(公告)日：2019-08-06

申请号：US15274235

申请日：2016-09-23

Applicant: CONOCOPHILLIPS COMPANY

Inventor： Sergei A. Filatyev ,  Pradeep Ananth Govind ,  Thomas J. Wheeler

IPC: E21B43/24 ,  E21B36/00 ,  E21B36/04 ,  E21B43/17 ,  E21B43/30

Abstract: The present disclosure relates to a particularly effective well configuration that can be used for SAGD and other steam based oil recovery methods. Fishbone multilateral wells are combined with SAGD, effectively expanding steam coverage, but the fishbones are preheated to mitigate plugging problems, with e.g., resistive heating, EM heating or chemical heating.

公开(公告)号：US20170081950A1

公开(公告)日：2017-03-23

申请号：US15274235

申请日：2016-09-23

Applicant: CONOCOPHILLIPS COMPANY

Inventor： Sergei A. FILATYEV ,  Pradeep Ananth Govind ,  Thomas J. WHEELER

IPC: E21B43/24 ,  E21B36/04 ,  E21B43/30 ,  E21B36/00 ,  E21B43/17

CPC classification number: E21B43/2408 ,  E21B36/008 ,  E21B36/04 ,  E21B43/17 ,  E21B43/2401 ,  E21B43/2406 ,  E21B43/305

Abstract: The present disclosure relates to a particularly effective well configuration that can be used for SAGD and other steam based oil recovery methods. Fishbone multilateral wells are combined with SAGD, effectively expanding steam coverage, but the fishbones are preheated to mitigate plugging problems, with e.g., resistive heating, EM heating or chemical heating.