US20060278387A1 - Semi-disposable coiled tubing connector - Google Patents

Semi-disposable coiled tubing connector Download PDF

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Publication number
US20060278387A1
US20060278387A1 US11/149,174 US14917405A US2006278387A1 US 20060278387 A1 US20060278387 A1 US 20060278387A1 US 14917405 A US14917405 A US 14917405A US 2006278387 A1 US2006278387 A1 US 2006278387A1
Authority
US
United States
Prior art keywords
coiled tubing
connector
coiled
assembly
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US11/149,174
Inventor
Robert Parker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Varco IP Inc
NOV Inc
Original Assignee
Varco IP Inc
National Oilwell Varco Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Varco IP Inc, National Oilwell Varco Inc filed Critical Varco IP Inc
Priority to US11/149,174 priority Critical patent/US20060278387A1/en
Assigned to NATIONAL OILWELL VARCO, INC. reassignment NATIONAL OILWELL VARCO, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PARKER, ROBERT
Priority to US11/400,285 priority patent/US7337519B2/en
Assigned to VARCO I/P, INC. reassignment VARCO I/P, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PARKER, ROBERT
Priority to CA002609466A priority patent/CA2609466A1/en
Priority to EP06771687A priority patent/EP1888958A2/en
Priority to PCT/US2006/021053 priority patent/WO2006135571A2/en
Publication of US20060278387A1 publication Critical patent/US20060278387A1/en
Priority to NO20080043A priority patent/NO20080043L/en
Abandoned legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/20—Flexible or articulated drilling pipes, e.g. flexible or articulated rods, pipes or cables
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/041—Couplings; joints between rod or the like and bit or between rod and rod or the like specially adapted for coiled tubing

Definitions

  • the present invention relates to a coiled tubing connector for connecting to tools when they are inserted into a well bore.
  • a coiled tubing is used for raising and lowering tools into the well bore. Specifically, this is achieved by attaching a tool to the end of a reel of coiled tubing. By reeling out the coiled tubing, the tool may be lowered to the desired location within the well. Various tools for gathering data and the like may be attached for placement within the well bore.
  • the connector at each end of the coiled tubing inserted within the well bore is subject to tension, compression and torque forces within the well. Consequently, it must be of a construction that will not disconnect under these conditions. In addition, however, it is necessary to have a connector that may be readily disconnected from each other upon removal from the well bore for reuse.
  • the present invention provides a coiled tubing connector that achieves both of these objects in providing resistance from separating forces in combination with ease of disconnection upon removal of the connector from the well bore by merely a single, severing operation wherein a disposable portion of the connector is severed along with the portion of the coiled tubing connected thereto to permit the remainder of the connector to remain undamaged and thus reusable.
  • the invention relates to a coiled tubing connector assembly for connecting a coiled tubing to a coiled tubing tool for insertion and use in a well bore, such as a gas or oil well.
  • the assembly comprises a connector housing having at one end thereof means for connection to a coiled tubing tool and having at an opposite end thereof means for connection to a coiled tubing.
  • the means for connection to the coiled tubing includes a sleeve removably secured to the housing at the opposite end thereof and having an extended portion coaxially extending a distance therefrom to form a tubular passage.
  • the coiled tubing has an extended end portion thereof which extends into the tubular passage and a connecting opening in the connector housing.
  • the extended end portion of the sleeve and the extended end portion of the coiled tubing each have a mating deformation therein securing the coiled-tubing to the coiled tubing connector within the tubular passage.
  • the coiled tubing connector assembly may further include means for sealing the connector and the coiled tubing when inserted within the well bore.
  • the coiled tubing connector assembly may further include the connector housing and the extended end portion of the coiled tubing each having abutting portions in engagement with the housing, which portions are structured to prevent rotation of the assembly.
  • the coiled tubing connector assembly may include the abutting portions having matching angular abutting surfaces to prevent axial rotation of the assembly.
  • FIG. 1 is a view in partial vertical cross section of an embodiment of the coiled-tubing connector in accordance with the invention
  • FIG. 2 is a similar view showing the coiled-tubing connector and a portion of the coiled-tubing for insertion into and in connection with the coiled-tubing connector;
  • FIG. 3 is a similar view showing the coiled-tubing connector and coiled-tubing in assembly.
  • FIG. 4 is a similar view showing the assembly of FIG. 3 severed to separate the disposable portion of the assembly from the coiled-tubing connector.
  • FIG. 1 With reference to the drawings, and presently FIG. 1 thereof, there is shown a coiled tubing connector having a disposable outer sleeve 1 threadably connected to housing 2 .
  • 0 -rings 3 and 4 provide for sealing of the assembly against pressure when inserted within a well bore.
  • FIG. 2 With reference to FIG. 2 , there is shown an end portion of a coiled tubing 5 for insertion within the housing 2 and disposable sleeve 1 .
  • FIG. 3 the end of the coiled tubing 5 is shown in assembly with the connector and having an angled end portion 6 abutting matching surface 7 of the connector. This structure prevents relative axial rotation of the connector and the coiled tubing within the well bore.
  • FIG. 4 is a view of the assembly similar to FIG. 3 in showing the severance of the coiled tubing from the connector at the disposable sleeve 1 .
  • the remainder of the sleeve may be threadably disengaged from the housing 2 .
  • the housing may then be readied for reuse by threadably connecting another disposable sleeve thereto.

Abstract

A coiled tubing connector for connecting tools together when they are inserted into a well bore. The connector includes a disposable element that may be severed along with the connected portion of the coiled tubing. This provides for quick disconnect and reuse of the remainder of the connector.

Description

    DESCRIPTION OF THE INVENTION Background of the Invention
  • The present invention relates to a coiled tubing connector for connecting to tools when they are inserted into a well bore.
  • In oil drilling and other well operations, a coiled tubing is used for raising and lowering tools into the well bore. Specifically, this is achieved by attaching a tool to the end of a reel of coiled tubing. By reeling out the coiled tubing, the tool may be lowered to the desired location within the well. Various tools for gathering data and the like may be attached for placement within the well bore.
  • In applications of this type, the connector at each end of the coiled tubing inserted within the well bore is subject to tension, compression and torque forces within the well. Consequently, it must be of a construction that will not disconnect under these conditions. In addition, however, it is necessary to have a connector that may be readily disconnected from each other upon removal from the well bore for reuse.
  • The present invention provides a coiled tubing connector that achieves both of these objects in providing resistance from separating forces in combination with ease of disconnection upon removal of the connector from the well bore by merely a single, severing operation wherein a disposable portion of the connector is severed along with the portion of the coiled tubing connected thereto to permit the remainder of the connector to remain undamaged and thus reusable.
    • SUMMARY OF THE INVENTION
  • The invention relates to a coiled tubing connector assembly for connecting a coiled tubing to a coiled tubing tool for insertion and use in a well bore, such as a gas or oil well. The assembly comprises a connector housing having at one end thereof means for connection to a coiled tubing tool and having at an opposite end thereof means for connection to a coiled tubing. The means for connection to the coiled tubing includes a sleeve removably secured to the housing at the opposite end thereof and having an extended portion coaxially extending a distance therefrom to form a tubular passage. The coiled tubing has an extended end portion thereof which extends into the tubular passage and a connecting opening in the connector housing. The extended end portion of the sleeve and the extended end portion of the coiled tubing each have a mating deformation therein securing the coiled-tubing to the coiled tubing connector within the tubular passage.
  • The coiled tubing connector assembly may further include means for sealing the connector and the coiled tubing when inserted within the well bore.
  • The coiled tubing connector assembly may further include the connector housing and the extended end portion of the coiled tubing each having abutting portions in engagement with the housing, which portions are structured to prevent rotation of the assembly.
  • The coiled tubing connector assembly may include the abutting portions having matching angular abutting surfaces to prevent axial rotation of the assembly.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a view in partial vertical cross section of an embodiment of the coiled-tubing connector in accordance with the invention;
  • FIG. 2 is a similar view showing the coiled-tubing connector and a portion of the coiled-tubing for insertion into and in connection with the coiled-tubing connector;
  • FIG. 3 is a similar view showing the coiled-tubing connector and coiled-tubing in assembly; and
  • FIG. 4 is a similar view showing the assembly of FIG. 3 severed to separate the disposable portion of the assembly from the coiled-tubing connector.
    • DESCRIPTION OF THE EMBODIMENTS
  • With reference to the drawings, and presently FIG. 1 thereof, there is shown a coiled tubing connector having a disposable outer sleeve 1 threadably connected to housing 2. 0-rings 3 and 4 provide for sealing of the assembly against pressure when inserted within a well bore.
  • With reference to FIG. 2, there is shown an end portion of a coiled tubing 5 for insertion within the housing 2 and disposable sleeve 1.
  • In FIG. 3, the end of the coiled tubing 5 is shown in assembly with the connector and having an angled end portion 6 abutting matching surface 7 of the connector. This structure prevents relative axial rotation of the connector and the coiled tubing within the well bore.
  • FIG. 4 is a view of the assembly similar to FIG. 3 in showing the severance of the coiled tubing from the connector at the disposable sleeve 1. When this is accomplished, the remainder of the sleeve may be threadably disengaged from the housing 2. The housing may then be readied for reuse by threadably connecting another disposable sleeve thereto.

Claims (4)

1. A coiled-tubing connector assembly for connecting a coiled tubing to a coiled tubing tool for insertion and use in a well bore of a gas or oil well, comprising:
a connector housing having at one end thereof means for connection to a coiled tubing tool and having at an opposite end thereof means for connection to a coiled tubing;
said means for connection to said coiled tubing includes a sleeve removably secured to said housing at said opposite end thereof and having an extended portion coaxially extending a distance therefrom to form a tubular passage;
a coiled tubing having an extended end portion thereof extending into said tubular passage and a connecting opening in said connector housing; and
said extended end portion of said sleeve and said extended end portion of said coiled tubing each having a mating deformation securing said coiled tubing to said coiled tubing connector within said tubular passage.
2. The coiled tubing connector assembly of claim 1, further including means for sealing said connector and coiled tubing when inserted with a well bore.
3. The coiled tubing connector assembly of claim 1 or claim 2, further including said connector housing and said extended end portion of said coiled tubing each having abutting portions in engagement within said housing and structured to prevent rotation of said assembly.
4. The coiled tubing connector assembly of claim 3, wherein said abutting portions have matching angular abutting surfaces to prevent rotation of said assembly.
US11/149,174 2005-06-10 2005-06-10 Semi-disposable coiled tubing connector Abandoned US20060278387A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US11/149,174 US20060278387A1 (en) 2005-06-10 2005-06-10 Semi-disposable coiled tubing connector
US11/400,285 US7337519B2 (en) 2005-06-10 2006-04-10 Method for producing a coiled tubing connector assembly
CA002609466A CA2609466A1 (en) 2005-06-10 2006-05-31 Semi-disposable coiled tubing connector
EP06771687A EP1888958A2 (en) 2005-06-10 2006-05-31 Semi-disposable coiled tubing connector
PCT/US2006/021053 WO2006135571A2 (en) 2005-06-10 2006-05-31 Semi-disposable coiled tubing connector
NO20080043A NO20080043L (en) 2005-06-10 2008-01-03 Kveilrorsforbindelse

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/149,174 US20060278387A1 (en) 2005-06-10 2005-06-10 Semi-disposable coiled tubing connector

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US11/400,285 Continuation-In-Part US7337519B2 (en) 2005-06-10 2006-04-10 Method for producing a coiled tubing connector assembly

Publications (1)

Publication Number Publication Date
US20060278387A1 true US20060278387A1 (en) 2006-12-14

Family

ID=37523078

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/149,174 Abandoned US20060278387A1 (en) 2005-06-10 2005-06-10 Semi-disposable coiled tubing connector

Country Status (1)

Country Link
US (1) US20060278387A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070235198A1 (en) * 2006-04-07 2007-10-11 Robert Parker Mechanism and method for connecting ends of metal tubing
US20130004346A1 (en) * 2011-06-30 2013-01-03 Baker Hughes Incorporated Helical driver to reduce stress in brittle bearing materials
US10995563B2 (en) 2017-01-18 2021-05-04 Minex Crc Ltd Rotary drill head for coiled tubing drilling apparatus

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4063760A (en) * 1976-10-27 1977-12-20 The Weatherhead Company Quick connect coupling
US5348088A (en) * 1993-07-13 1994-09-20 Camco International Inc. Coiled tubing external connector with packing element
US5452923A (en) * 1994-06-28 1995-09-26 Canadian Fracmaster Ltd. Coiled tubing connector
US6474701B1 (en) * 1996-04-30 2002-11-05 Weatherford/Lamb, Inc. Tubing connector
US6481498B1 (en) * 2000-12-07 2002-11-19 Tuboscope I/P Slip connector for use with coiled tubing
US20040012198A1 (en) * 1995-09-28 2004-01-22 Brotzell Arthur D. Composite coiled tubing end connector
US20040084191A1 (en) * 2002-11-01 2004-05-06 Laird Mary L. Internal coiled tubing connector
US20050116469A1 (en) * 2003-12-02 2005-06-02 Robert Parker Coiled tubing connector and method of manufacture
US7014215B2 (en) * 2001-03-09 2006-03-21 The Gates Corporation Quick connect coupling

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4063760A (en) * 1976-10-27 1977-12-20 The Weatherhead Company Quick connect coupling
US5348088A (en) * 1993-07-13 1994-09-20 Camco International Inc. Coiled tubing external connector with packing element
US5452923A (en) * 1994-06-28 1995-09-26 Canadian Fracmaster Ltd. Coiled tubing connector
US20040012198A1 (en) * 1995-09-28 2004-01-22 Brotzell Arthur D. Composite coiled tubing end connector
US6474701B1 (en) * 1996-04-30 2002-11-05 Weatherford/Lamb, Inc. Tubing connector
US6481498B1 (en) * 2000-12-07 2002-11-19 Tuboscope I/P Slip connector for use with coiled tubing
US7014215B2 (en) * 2001-03-09 2006-03-21 The Gates Corporation Quick connect coupling
US20040084191A1 (en) * 2002-11-01 2004-05-06 Laird Mary L. Internal coiled tubing connector
US20050116469A1 (en) * 2003-12-02 2005-06-02 Robert Parker Coiled tubing connector and method of manufacture

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070235198A1 (en) * 2006-04-07 2007-10-11 Robert Parker Mechanism and method for connecting ends of metal tubing
US20130004346A1 (en) * 2011-06-30 2013-01-03 Baker Hughes Incorporated Helical driver to reduce stress in brittle bearing materials
US9353753B2 (en) * 2011-06-30 2016-05-31 Baker Hughes Incorporated Helical driver to reduce stress in brittle bearing materials
US10995563B2 (en) 2017-01-18 2021-05-04 Minex Crc Ltd Rotary drill head for coiled tubing drilling apparatus
US11136837B2 (en) 2017-01-18 2021-10-05 Minex Crc Ltd Mobile coiled tubing drilling apparatus

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Legal Events

Date Code Title Description
AS Assignment

Owner name: NATIONAL OILWELL VARCO, INC., TEXAS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PARKER, ROBERT;REEL/FRAME:017722/0909

Effective date: 20050617

AS Assignment

Owner name: VARCO I/P, INC., TEXAS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PARKER, ROBERT;REEL/FRAME:017820/0473

Effective date: 20050617

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION