Permeability flow balancing within integral screen joints

• US 8,151,881 B2
• Filed: 06/02/2009
• Issued: 04/10/2012
• Est. Priority Date: 06/02/2009
• Status: Active Grant

• Current Assignee: Baker Hughes Incorporated (Baker Hughes Company)
• Original Assignee: Baker Hughes Incorporated (Baker Hughes Company)
• Inventors: Johnson, Michael H., Kim, Namhyo
• Primary Examiner(s): WRIGHT, GIOVANNA COLLINS
• Application Number:
  US12/476,865
• Publication Number:
  US 20100300676A1
• Time in Patent Office: 1,043 Days
• Field of Search: 166/268, 166/245, 166/272.3
• US Class Current: 166/272.3
• CPC Class Codes: E21B 43/2406 Steam assisted gravity drainage [SAGD]

Abstract

A SAGD system in a formation including a heated fluid injection well having a tubular including permeability control, one or more open hole anchors restricting thermal growth of the tubular and one or more baffles directing heated fluid application to target areas of the formation; a production well in fluid collecting proximity to the injection well the production well having a tubular with permeability control, one or more open hole anchors and one or more baffles.

Claims

1. A steam assisted gravity drainage system in a formation comprising:

a heated fluid injection well having a tubular including permeability control, one or more open hole anchors restricting thermal growth of the tubular and one or more baffles directing heated fluid application to target areas of the formation; and

a production well in fluid collecting proximity to the injection well the production well having a tubular with permeability control, one or more open hole anchors and one or more baffles;

wherein the one or more baffles of at least one of the injection well and the production well are open hole baffles having a tapered cross-section including a substantially pointed end contacting the formation.

2. A steam assisted gravity drainage system as claimed in claim 1 wherein the tubular in the injection well is permeability controlled to have lesser permeability at a heel of the tubular and more permeability at a toe of the tubular.

3. A steam assisted gravity drainage system as claimed in claim 1 wherein the tubular in the production well is permeability controlled to have lesser permeability at a heel of the tubular and more permeability at a toe of the tubular.

4. A steam assisted gravity drainage system as claimed in claim 1 wherein the injection well has lower permeability toward a heel of the injection well and relatively more permeability toward a toe of the injection well.

5. A steam assisted gravity drainage system as claimed in claim 4 wherein the permeability control is one or more permeability control devices.

6. A steam assisted gravity drainage system as claimed in claim 5 wherein the one or more devices are beaded matrixes.

7. A steam assisted gravity drainage system as claimed in claim 4 wherein the one or more baffles in at least one of the injection well and production well are metal.

8. A steam assisted gravity drainage system as claimed in claim 1 wherein the production well has lower permeability toward a heel of the production well and relatively more permeability toward a toe of the production well.

9. A steam assisted gravity drainage system as claimed in claim 8 wherein the permeability control is one or more permeability control devices.

10. A steam assisted gravity drainage system as claimed in claim 8 wherein the one or more devices are beaded matrixes.

11. A steam assisted gravity drainage system as claimed in claim 8 wherein the one or more baffles in at least one of the injection well and the production well are metal.

12. A steam assisted gravity drainage system as claimed in claim 1 wherein the one or more baffles in at least one of the injection well and the production well are metal.