TREA

Coil tubing system

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Information

  • Patent Application
  • 20070194164
  • Publication Number
    20070194164
  • Date Filed
    February 23, 2006
    18 years ago
  • Date Published
    August 23, 2007
    17 years ago
Information
Abstract
A coil tubing system including a reel having a core rotatable about a horizontal axis, the core having a surface defining an interior cavity about the horizontal axis and a tubing having an inlet end positioned proximate the horizontal axis. A bend is formed in the tubing between the inlet end and a core point of the tubing positioned proximate the core surface, the permanent bend positioned substantially within the interior cavity.
Description

BRIEF DESCRIPTION OF THE DRAWINGS

The foregoing and other features and aspects of the present invention will be best understood with reference to the following detailed description of a specific embodiment of the invention, when read in conjunction with the accompanying drawings, wherein:



FIG. 1 is a partial cross-sectional view of an embodiment of the coil tubing system of the present invention wherein the tubing has an out-of-plane internal bend; and



FIG. 2 is a partial cross-sectional view of an embodiment of the coil tubing system of the present invention wherein the tubing has an in-plane internal bend.


Claims
  • 1. A coil tubing system, the system comprising: a reel having a core rotatable about a horizontal axis, the core having a surface defining an interior cavity; anda tubing having an inlet end and an inlet section, wherein the inlet end and inlet section are positioned substantially in the interior cavity.
  • 2. The system of claim 1, wherein the inlet section extends from the inlet end to a core point.
  • 3. The system of claim 2, wherein the core point is positioned proximate the core surface.
  • 4. The system of claim 1, wherein the inlet section includes a permanent bend therein.
  • 5. The system of claim 1, wherein the inlet section includes a curve between the inlet end and core point proximate the core surface.
  • 6. The system of claim 5, wherein the curve is a permanent bend in the tubing.
  • 7. The system of claim 5, wherein the inlet end and the core point are offset from each other relative to a plane extending perpendicular to the horizontal axis of the reel.
  • 8. The system of claim 5, wherein the inlet end and the core point are substantially aligned in a plane extending substantially perpendicular to the horizontal axis of the reel.
  • 9. The system of claim 7, wherein the curve is a permanent bend in the tubing.
  • 10. The system of claim 8, wherein the curve is a permanent bend in the tubing.
  • 11. The system of claim 1, wherein the inlet end is connected to a treating iron proximate the horizontal axis of the reel.
  • 12. The system of claim 5, wherein the inlet end is connected to a treating iron proximate the horizontal axis of the reel.
  • 13. The system of claim 7, wherein the inlet end is connected to a treating iron proximate the horizontal axis of the reel.
  • 14. The system of claim 8, wherein the inlet end is connected to a treating iron proximate the horizontal axis of the reel.
  • 15. The system of claim 1, further including a window formed through the core surface.
  • 16. The system of claim 5, further including a window formed through the core surface.
  • 17. A coil tubing system, the system comprising: a reel having a core rotatable about a horizontal axis, the core having a surface defining an interior cavity about the horizontal axis;a tubing having an inlet end positioned proximate the horizontal axis;a permanent bend formed in the tubing between the inlet end and a core point of the tubing positioned proximate the core surface, the permanent bend positioned substantially within the interior cavity; anda window formed through the core surface.
  • 18. A method for accessing a portion of a tubing spooled on a reel, the method comprising the steps of: providing a reel having a core rotatable about a horizontal axis, the core having a surface defining an interior cavity about the horizontal axis;forming a permanent bend in an inlet section of the tubing proximate an inlet end of the tubing;positioning the inlet end and the inlet section substantially within the interior cavity; andspooling a length of the tubing beyond the inlet section on the core.
  • 19. The method of claim 18, further including the step of forming an opening through the core surface.
  • 20. The method of claim 18, further including the step of inspecting the tubing through the interior cavity.