System and Method to Facilitate Interventions from an Offshore Platform

• US 20090025937A1
• Filed: 07/16/2008
• Published: 01/29/2009
• Est. Priority Date: 07/20/2007
• Status: Active Grant

• Current Assignee: Schlumberger Technology Corporation (SLB)
• Original Assignee: Schlumberger Technology Corporation (SLB)
• Inventors: Robinson, Larry, Simmons, Gary
• Granted Patent: US 9,062,500 B2
• Time in Patent Office: Days
• US Class Current: 166/351
• CPC Class Codes: E21B 15/003 adapted to be moved on their substructure, e.g. with skidding means; adapted to drill a plurality of wells
• CPC Class Codes: E21B 15/02 specially adapted for underwater drilling E21B15/04 takes precedence
• CPC Class Codes: E21B 19/22 Handling reeled pipe or rod units, e.g. flexible drilling pipes lifting or hauling appliances using two or more cooperating endless chains B66D3/003

Abstract

A technique facilitates intervention operations in a plurality of wells from an offshore fixed platform. A jacking frame is movably mounted on the offshore fixed platform to provide access to selected wells of the plurality of wells. The jacking frame is coupled to a translation system that enables horizontal movement of the jacking frame along the offshore fixed platform to better position the jacking frame for intervention in desired wells. One or more jib cranes are mounted to the jacking frame to lift or deploy equipment with respect to selected wells.

Claims

1. A system for facilitating multiple interventions in a plurality of wells, comprising:

a jacking frame mounted on an offshore fixed platform;

a pair of opposing jib cranes mounted to the jacking frame; and

a translation system to move the jacking frame laterally along the offshore fixed platform to facilitate access to the plurality of wells.

2. The system as recited in claim 1, wherein the jacking frame and the pair of opposing jib cranes are movable to provide 360 degree access to the plurality of wells.

3. The system as recited in claim 1, wherein the jacking frame comprises a vertical adjustment mechanism.

4. The system as recited in claim 3, wherein the vertical adjustment mechanism comprises hydraulic cylinders.

5. The system as recited in claim 1, wherein the translation system comprises modular rails along which the jacking frame is able to move.

6. The system as recited in claim 5, wherein the translation system comprises a winch to move the jacking frame in a first horizontal direction.

7. The system as recited in claim 6, wherein the translation system comprises a hydraulic cylinder system to move the jacking frame in a second horizontal direction.

8. The system as recited in claim 6, wherein the winch comprises a hydraulic winch.

9. The system as recited in claim 1, further comprising coiled tubing injection equipment mounted on the jacking frame.

10. The system as recited in claim 1, further comprising a jib crane winch to enable lifting and placement of equipment into selected wells of the plurality of wells.

11. A method of treating a plurality of wells, comprising:

mounting a jacking frame to an offshore platform for movement along the platform;

moving the jacking frame horizontally along the platform to provide access to specific wells of a plurality of wells; and

delivering equipment into or out of selected wells with a jib crane mounted to the jacking frame for movement with the jacking frame.

12. The method as recited in claim 11, wherein mounting comprises mounting the jacking frame to modular rails that can be assembled according to the configuration of the platform.

13. The method as recited in claim 11, wherein moving comprises moving the jacking frame in a front-to-back direction and a side-to-side direction.

14. The method as recited in claim 11, wherein moving comprises moving the jacking frame in a first horizontal direction with a winch.

15. The method as recited in claim 14, wherein moving comprises moving the jacking frame in a second horizontal direction with a hydraulic system.

16. The method as recited in claim 11, further comprising adjusting the jacking frame in a vertical direction.

17. The method as recited in claim 11, further comprising mounting a pair of opposed jib cranes on the jacking frame.

18. The method as recited in claim 11, wherein delivering comprises rotating the jib crane and moving comprises translating the jacking frame to facilitate access to the specific wells.

19. A system, comprising:

a jacking frame mounted on an offshore fixed platform;

a translation system coupled to the jacking frame to selectively move the jacking frame horizontally toward selected wells;

a height adjustment mechanism to enable selective adjustment of the height of the jacking frame;

an injector mounted on the jacking frame to inject coiled tubing; and

a jib crane mounted on the jacking frame to deliver equipment to selected wells.

20. The system as recited in claim 19, wherein the translation system comprises a plurality of modular rails.

21. The system as recited in claim 20, wherein the translation system comprises a first mechanism oriented to cause movement in a first horizontal direction and a second mechanism oriented to cause movement in a second horizontal direction.

22. The system as recited in claim 19, wherein the jib crane is pivotable.

23. The system as recited in claim 19, wherein the jib crane comprises a pair of opposed jib cranes.