公开(公告)号：US10597579B2

公开(公告)日：2020-03-24

申请号：US14594456

申请日：2015-01-12

Applicant: CONOCOPHILLIPS COMPANY

Inventor： Siluni Wickramathilaka ,  Logan Warren ,  Thomas J. Wheeler ,  David A. Brown

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

Abstract: The present invention relates to a method for reducing solvent retention in ES-SAGD process so as to increase process economics wherein an anti-retention agent is injected into the reservoir to decrease solvent retention in the reservoir. The anti-retention agent can be made pre-injection or can form in situ, and comprises an agent in which the solvent is readily soluble, such that the solvent partitions into the foam, colloidal dispersion, or gel, and out of the condensed water or steam, and away from the reservoir rock.

公开(公告)号：US10385666B2

公开(公告)日：2019-08-20

申请号：US14595614

申请日：2015-01-13

Applicant: CONOCOPHILLIPS COMPANY

Inventor： John A. Stanecki ,  Thomas J. Wheeler

IPC: E21B43/24 ,  E21B43/30

Abstract: The present disclosure relates to a particularly effective well configuration that can be used for steam-drive based oil recovery methods. Fishbone multilateral wells are combined with steam drive, effectively allowing drive processes to be used where previously the reservoir lacked sufficient injectivity to allow steam drive or cyclic steam based methods.

公开(公告)号：US10316632B2

公开(公告)日：2019-06-11

申请号：US14595614

申请日：2015-01-13

Applicant: CONOCOPHILLIPS COMPANY

Inventor： John A. Stanecki ,  Thomas J. Wheeler

IPC: E21B43/24 ,  E21B43/30

Abstract: The present disclosure relates to a particularly effective well configuration that can be used for steam-drive based oil recovery methods. Fishbone multilateral wells are combined with steam drive, effectively allowing drive processes to be used where previously the reservoir lacked sufficient injectivity to allow steam drive or cyclic steam based methods.

公开(公告)号：US10287864B2

公开(公告)日：2019-05-14

申请号：US14956030

申请日：2015-12-01

Applicant: CONOCOPHILLIPS COMPANY

Inventor： Bo Chen ,  Qing Chen ,  Thomas J. Wheeler

IPC: E21B43/16 ,  E21B43/24 ,  E21B43/30

Abstract: Producing hydrocarbons by steam assisted gravity drainage, more particularly utilizing conventional horizontal wellpair configuration of SAGD in conjunction of infill production wells the production wells comprising two or more fishbone lateral wells to inject steam initially and then switch to NCG-steam coinjection after establishing thermal communication between the thermal chamber and infill well.