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Boom mounted coiled tubing guide and method for running coiled tubing

A technology of guides and oil pipes, applied in drilling equipment and methods, drill pipes, casings, etc.

Inactive Publication Date: 2015-01-21
NAT OILWELL VARCO LP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the tension in the section 14 of the coiled tubing between the coiled tubing injector 18 and the reel 10 also exerts a lateral force on the guide arch 16 which is transmitted to the coiled tubing injector 18 causing a bending moment on the wellhead

Method used

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  • Boom mounted coiled tubing guide and method for running coiled tubing
  • Boom mounted coiled tubing guide and method for running coiled tubing
  • Boom mounted coiled tubing guide and method for running coiled tubing

Examples

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Embodiment Construction

[0039] In the following description, the same numerals refer to the same elements.

[0040] exist Figure 3-17 In each example, a coiled tubing injector 18 for injecting coiled tubing 34 into the wellbore is positioned above the wellhead using an elongated support structure. An example of such an elongated support structure includes crane 26 with telescoping boom 38 . Another example of such an elongated support structure is a telescoping mast 60, such as Figure 9-10 shown.

[0041] The coiled tubing unit generally includes a frame 18a to which a coiled tubing injector head 18b is mounted. However, in other embodiments, the coiled tubing injector may include more components, including, for example, a straightener. In other embodiments, the unit may omit an external frame, such as frame 18a. exist Figure 3-14 and 16-17, the coiled tubing enters the straightener 19 mounted on top of the frame 18a of the coiled tubing injector 18. exist Figures 15A-15C A straightener i...

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PUM

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Abstract

A coiled tubing support guide for maintaining an arch in a length of coiled tubing as it is unwound from a storage reel and feed into a coiled tubing injector connected with a wellhead is mounted to an elongated support structure rather than to the coiled tubing injector. The elongated support structure bears a load created by tension placed on the coiled tubing by the reel, thereby avoiding putting a bending moment on the wellhead. In alternate embodiment, a coiled tubing injector being held by a hoist line from the elongated support structure is coupled to the elongated support structure with a bending-resistant coupling that permits relative rotation of the coiled tubing injector.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from US Provisional Application No. 61 / 583,230, filed January 5, 2012, which is hereby incorporated by reference in its entirety for all purposes. technical field [0003] The present invention generally relates to oilfield operations using coiled / coiled tubing. Background technique [0004] Coiled tubing is commonly used extensively in oilfield services and operations. It can be run into and lifted out of the wellbore at high rates relative to straight jointed pipe, and unlike wire line, it can be pushed into the wellbore. Coiled tubing refers to a continuous piece of steel pipe that is continuously milled and wound onto large coiled reels for transport and handling. Coiled tubing can have yield and tensile strengths from 50,000 pounds-force per square inch (PSI) to over 120,000 PSI, with diameters ranging from 0.75 inches to over 4 inches, and has been manufactured in lengths greate...

Claims

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Application Information

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IPC IPC(8): E21B19/22
CPCE21B19/08E21B19/22E21B41/00
Inventor M·X·陆J·E·古德
Owner NAT OILWELL VARCO LP