公开(公告)号：US20230147327A1

公开(公告)日：2023-05-11

申请号：US18049304

申请日：2022-10-25

Applicant: ConocoPhillips Company

Inventor： Alex FILSTEIN

IPC: E21B49/08 ,  E21B47/12 ,  C09K8/592

CPC classification number: E21B49/087 ,  E21B47/12 ,  C09K8/592 ,  E21B2200/20

Abstract: A method for producing heavy oil, the method including testing a plurality of samples either from a reservoir play or simulating a reservoir play in a temperature and pressure controlled gravity drainage experiment. Test injection fluids are injected into the samples at a reservoir temperature and pressure and Cumulative Oil Production (COP) or Recovery Factor (RF) or similar feature measured over time. An injection profile is obtained by selecting n injection fluids based on a best COP or RF at a given time Tn, wherein n is a number of fluid injection stages and switching to an n+1 injection fluid when a rate of change (ROC) in the COP or RF drops at least 25%-75%, but preferably 40-60% or 50%. The injection profile is then implemented in the reservoir to produce heavy oil. Optimized injection profiles for certain reservoirs are also provided.

公开(公告)号：US20250027395A1

公开(公告)日：2025-01-23

申请号：US18748233

申请日：2024-06-20

Applicant: ConocoPhillips Company

Inventor： Alex FILSTEIN ,  Javier SANCHEZ ,  Julian ORTIZ ARANGO

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

Abstract: A method for producing heavy oil, the method including producing oil by SAGD or a SAGD variant in an array of wellpairs until an SOR increases, then shutting in every other injector and injecting steam plus noncondensable gas (NCG) in the remaining injectors and producing oil from all producers. The method reduced steam usage by at least 40% or even at least 50% in the later stages of the well, without comprising oil production.

公开(公告)号：US20240401451A1

公开(公告)日：2024-12-05

申请号：US18675903

申请日：2024-05-28

Applicant: CONOCOPHILLIPS COMPANY

Inventor： Javier SANCHEZ ,  Alex FILSTEIN ,  Mason OGG

IPC: E21B43/24 ,  E21B43/12 ,  E21B47/008 ,  E21B47/07

Abstract: A method for producing heavy oil using solvent injection without gas interference at the electric submersible pump (ESP), the method including completing the injection well with two or more injector tubings, at a heel and toe, and optionally therebetween. Ideally, when gas locking of the ESP is detected, the operator switches to toe dominant injections, mitigating the gas locking problem, and producing oil at a faster rate than possible with evenly distributed injections.