WO2006115418A1 - Pulling tool for use in oil and gas wells - Google Patents

Pulling tool for use in oil and gas wells Download PDF

Info

Publication number
WO2006115418A1
WO2006115418A1 PCT/NO2006/000159 NO2006000159W WO2006115418A1 WO 2006115418 A1 WO2006115418 A1 WO 2006115418A1 NO 2006000159 W NO2006000159 W NO 2006000159W WO 2006115418 A1 WO2006115418 A1 WO 2006115418A1
Authority
WO
WIPO (PCT)
Prior art keywords
pulling tool
driving wheels
oil
arms
gas wells
Prior art date
Application number
PCT/NO2006/000159
Other languages
French (fr)
Inventor
Per Olav Haughom
Original Assignee
Hav Technology As
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 Hav Technology As filed Critical Hav Technology As
Priority to EP06733124.9A priority Critical patent/EP1880077A4/en
Publication of WO2006115418A1 publication Critical patent/WO2006115418A1/en

Links

Classifications

    • 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
    • E21B23/00—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
    • E21B23/14—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells for displacing a cable or cable-operated tool, e.g. for logging or perforating operations in deviated wells
    • 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
    • E21B23/00—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
    • E21B23/001—Self-propelling systems or apparatus, e.g. for moving tools within the horizontal portion of a borehole

Definitions

  • the present invention relates to a specialized pulling tool for use in the inspection and maintenance of oil and gas wells.
  • a pulling tool In connection with maintenance and inspection in long horizontal wells, a pulling tool must be used in order to reach sufficiently far into the well with maintenance tools to carry out necessary maintenance operations.
  • Such equipment may consist, for example, of valves and measurement equipment with associated communication equipment for communication to the surface.
  • the need for efficient maintenance and inspection equipment increases as more sophisticated equipment is deployed in the wells.
  • US Patent No. 6 273 189 shows an example of prior art wherein a well tractor includes electromotors mounted in the driving wheels, and between the motor and driving wheels there is provided a somewhat complicated system including a harmonic gear for increasing the torque on the driving wheels.
  • a hydraulic system is used that includes cylinders for activating the arms that press the driving wheels against the borehole wall.
  • the present invention provides a solution wherein the pulling tool is electrically powered, without the use of hydraulics.
  • the invention is characterized in the features set forth in the independent claim 1.
  • Fig. 1 shows the principle of a pulling tool deployed in a well.
  • Fig. 2 shows a module having an inlaid cut.
  • Fig. 3 shows details of a wheel with motor and supporting arrangements.
  • electromotors are built into driving wheels 4 on the pulling tool, the velocity of the driving wheels being controlled by a frequency transformer regulating the frequency of the current supplied to the motor.
  • the wheels 4 with the embedded electromotor are pressed against the borehole wall 3 by means of an electric, adjustable strength actuator unit.
  • the driving wheels are retracted by means of a spring mechanism so that the pulling tool can be pulled back and out of the well.
  • the pulling tool is preferably comprised of independent modules 5 that are put together in the number necessary to attain a particular objective.
  • the driving wheels 4 consist of two halves supported by ball bearings 16 arranged on each side of the arm 7.
  • the bolt 19 keeps the two halves of the wheel together.
  • the rotation is provided by a permanent magnet motor comprised of permanent magnets 17 and a coil 18. Magnetic forces between the coils 18 andappel
  • the permanent magnets 17 generate a torque that drives the wheels.
  • the velocity and force are determined by the frequency and voltage supplied to the coil 18.
  • the withdrawal of the pulling tool is performed using the winch 1.

Abstract

A pulling tool for use in oil and gas wells, especially suited for the inspection and maintenance of equipment deployed in horizontal wells. The pulling tool is assembled of modules (5) that are screwed together at threaded connections (8). Each module is provided with a driving wheel (4) connected to the arm (7) in such a manner that it may be pressed against the borehole wall by means of a rotating electric activator (13) and the gear connections (12), (11), and (20). The rotation of the driving wheels (4) is performed by an electromotor consisting of permanent magnets (17) and an electric coil (18). The velocity and power is determined by the frequency and voltage of the power input through the cable (2). The withdrawal of the pulling tool after the completion of a task is performed using the winch (1).

Description

χ
"Pulling tool"
The present invention relates to a specialized pulling tool for use in the inspection and maintenance of oil and gas wells. In connection with maintenance and inspection in long horizontal wells, a pulling tool must be used in order to reach sufficiently far into the well with maintenance tools to carry out necessary maintenance operations.
Today, oil and gas wells are provided with sophisticated equipment in order to optimize the recovery. Such equipment may consist, for example, of valves and measurement equipment with associated communication equipment for communication to the surface. The need for efficient maintenance and inspection equipment increases as more sophisticated equipment is deployed in the wells.
US Patent No. 6 273 189 shows an example of prior art wherein a well tractor includes electromotors mounted in the driving wheels, and between the motor and driving wheels there is provided a somewhat complicated system including a harmonic gear for increasing the torque on the driving wheels. In addition, a hydraulic system is used that includes cylinders for activating the arms that press the driving wheels against the borehole wall.
Currently, different design pulling tools are utilized. The most commonly used are electro/hydraulic devices wherein the thruster device of the pulling tool is powered by hydraulic motors connected to a pumping assembly driven by electric power supplied through cable from the surface. Hydraulic devices to be applied in oil or gas wells with high pressures and high temperatures become complex technical arrangements. To resist high pressures, the hydraulic system must be pressure compensated, and extremely high demands are put on seal assemblies. The efficiency of small hydraulic devices is very poor. With a limited power delivery through long supply lines, the pulling force of the pulling tool becomes very limited. Also, small-dimension hydraulic motors are very expensive to manufacture and maintain. Today, there is a demand for more efficient and less expensive solutions, so that the maintenance of wells can be optimized by enabling more maintenance operations to be performed with pulling tools without the use of heavier and very costly equipment. The present invention provides a solution wherein the pulling tool is electrically powered, without the use of hydraulics. The invention is characterized in the features set forth in the independent claim 1.
The invention will now be explained in more detail with reference to an exemplary embodiment and with reference to the accompanying drawings.
Fig. 1 shows the principle of a pulling tool deployed in a well.
Fig. 2 shows a module having an inlaid cut.
Fig. 3 shows details of a wheel with motor and supporting arrangements.
According to the present invention, electromotors are built into driving wheels 4 on the pulling tool, the velocity of the driving wheels being controlled by a frequency transformer regulating the frequency of the current supplied to the motor. The wheels 4 with the embedded electromotor are pressed against the borehole wall 3 by means of an electric, adjustable strength actuator unit. When the power is switched off, the driving wheels are retracted by means of a spring mechanism so that the pulling tool can be pulled back and out of the well. The pulling tool is preferably comprised of independent modules 5 that are put together in the number necessary to attain a particular objective.
From a winch 1 positioned on the surface, power and signal cable 2 runs down to a control unit 6 connected to the modules 5. The pulling tool is assembled of the independent modules 5 by means of threaded joints 8. Electric cables are run in the slot 9 between the modules. The driving wheels 4 with the embedded electromotor are pressed against the wall 3 of the well by means of electrically activated arms 7. The activation is accomplished using an electric activator 13 that through the angular gear 12 and gear wheels 11 is connected to the cogging 20 on the arms 7. Rotation of the activator 13 will cause a movement of the arm 7 and thereby move the driving wheels 4 in a radial direction out from the aperture 10. When the power is switched off, the wheels 4 and arms 7 are retracted into the slot 10 by means of a spring 15. The arms 7 are non-rotatably supported by the bolt 14.
The driving wheels 4 consist of two halves supported by ball bearings 16 arranged on each side of the arm 7. The bolt 19 keeps the two halves of the wheel together. The rotation is provided by a permanent magnet motor comprised of permanent magnets 17 and a coil 18. Magnetic forces between the coils 18 and „
the permanent magnets 17 generate a torque that drives the wheels. The velocity and force are determined by the frequency and voltage supplied to the coil 18. The withdrawal of the pulling tool is performed using the winch 1.

Claims

1. A pulling tool, in particular for use in oil and gas wells, wherein the pulling tool includes a number of driving wheels (4) positioned 90 degrees relative to each other and in such a manner that they may be moved in a radial direction and pressed against the wall (3) of the well by means of arms (7), the driving wheels
(4) being driven by one or more electromotors arranged in or nearby the driving wheels (4), characterized in that the permanent magnets (17) of the electromotor(s) are mounted in the driving wheels (4) and form an integrated part thereof.
2. The pulling tool of claim 1 , characterized in that the activation of the arms (7) is performed by means of an electric activator (13) connected to the arms (7) through an angular gear (12) and gear wheels (11) engaging the cogging (20) on the arms (7).
3. The pulling tool of claims 1 and 2, characterized in that the pulling tool is assembled of individual modules
(5) connected by threaded connections (8).
PCT/NO2006/000159 2005-04-28 2006-04-28 Pulling tool for use in oil and gas wells WO2006115418A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06733124.9A EP1880077A4 (en) 2005-04-28 2006-04-28 Pulling tool for use in oil and gas wells

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20052085A NO324404B1 (en) 2005-04-28 2005-04-28 Device for drawing tools for use in underground wells
NO20052085 2005-04-28

Publications (1)

Publication Number Publication Date
WO2006115418A1 true WO2006115418A1 (en) 2006-11-02

Family

ID=35276295

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO2006/000159 WO2006115418A1 (en) 2005-04-28 2006-04-28 Pulling tool for use in oil and gas wells

Country Status (3)

Country Link
EP (1) EP1880077A4 (en)
NO (1) NO324404B1 (en)
WO (1) WO2006115418A1 (en)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008111844A1 (en) * 2007-03-13 2008-09-18 Aker Well Service As Wireline tractor device
WO2009020397A1 (en) * 2007-08-08 2009-02-12 Wellbore Solutions As Coupling device for converting mechanical torque into hydraulic pressure for exerting radial thrusting force on drive wheels in a pulling tool in a well
EP2106493A1 (en) * 2007-01-23 2009-10-07 Wellbore Solutions AS Device for transport of tools in wellbores and pipelines
EP2505772A1 (en) * 2011-03-30 2012-10-03 Welltec A/S Hydraulic assembly
EP2505771A1 (en) * 2011-03-30 2012-10-03 Welltec A/S Arm assembly
EP2505767A1 (en) * 2011-03-30 2012-10-03 Welltec A/S Fail-safe spring
EP2505768A1 (en) * 2011-03-30 2012-10-03 Welltec A/S Modular downhole tool
EP2505769A1 (en) * 2011-03-30 2012-10-03 Welltec A/S Service panel
EP2505770A1 (en) * 2011-03-30 2012-10-03 Welltec A/S Torque member
WO2015036574A3 (en) * 2013-09-13 2015-06-25 Maersk Olie Og Gas A/S Downhole propulsion apparatus
WO2015112022A1 (en) * 2014-01-24 2015-07-30 Altus Intervention As Wireline tractor comprising a disc-shaped cutting device for perforating of a tubing wall and method for perforating a tubing wall
WO2019009734A1 (en) * 2017-07-06 2019-01-10 Well Conveyor As A pulling tool for use in a wellbore and/or tubing and a propulsion module of a pulling tool
WO2019077308A1 (en) * 2017-10-05 2019-04-25 Petróleo Brasileiro S. A. - Petrobras Device for centring and/or pulling a tool in a pipeline
CN111991579A (en) * 2020-08-26 2020-11-27 梁双鸾 A disinfection belt cleaning device for medical treatment gynaecology and obstetrics's disk household utensils
NO345947B1 (en) * 2020-06-03 2021-11-08 Well Innovation As Pulling tool
US11970918B2 (en) 2020-06-03 2024-04-30 Well Innovation As Pulling tool

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4085808A (en) * 1976-02-03 1978-04-25 Miguel Kling Self-driving and self-locking device for traversing channels and elongated structures
US20030146029A1 (en) * 2000-01-26 2003-08-07 Heinen Adrianus Johannes Wheel provided with driving means

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6273189B1 (en) * 1999-02-05 2001-08-14 Halliburton Energy Services, Inc. Downhole tractor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4085808A (en) * 1976-02-03 1978-04-25 Miguel Kling Self-driving and self-locking device for traversing channels and elongated structures
US20030146029A1 (en) * 2000-01-26 2003-08-07 Heinen Adrianus Johannes Wheel provided with driving means

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1880077A4 *

Cited By (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2106493A1 (en) * 2007-01-23 2009-10-07 Wellbore Solutions AS Device for transport of tools in wellbores and pipelines
EP2106493A4 (en) * 2007-01-23 2014-06-18 Wellbore Solutions As Device for transport of tools in wellbores and pipelines
WO2008111844A1 (en) * 2007-03-13 2008-09-18 Aker Well Service As Wireline tractor device
AU2008225242B2 (en) * 2007-03-13 2010-12-09 Aker Well Service As Wireline tractor device
EA015100B1 (en) * 2007-03-13 2011-06-30 Акер Велл Сервис Ас Wireline tractor device
US8302682B2 (en) 2007-03-13 2012-11-06 Aker Well Service As Wireline tractor device
WO2009020397A1 (en) * 2007-08-08 2009-02-12 Wellbore Solutions As Coupling device for converting mechanical torque into hydraulic pressure for exerting radial thrusting force on drive wheels in a pulling tool in a well
EP2505770A1 (en) * 2011-03-30 2012-10-03 Welltec A/S Torque member
US9494001B2 (en) 2011-03-30 2016-11-15 Welltec A/S Service panel
EP2505769A1 (en) * 2011-03-30 2012-10-03 Welltec A/S Service panel
EP2505767A1 (en) * 2011-03-30 2012-10-03 Welltec A/S Fail-safe spring
WO2012130939A1 (en) * 2011-03-30 2012-10-04 Welltec A/S Modular downhole tool
WO2012130945A1 (en) * 2011-03-30 2012-10-04 Welltec A/S Arm assembly
WO2012130940A1 (en) * 2011-03-30 2012-10-04 Welltec A/S Service panel
WO2012130943A1 (en) * 2011-03-30 2012-10-04 Welltec A/S Torque member
WO2012130942A1 (en) * 2011-03-30 2012-10-04 Welltec A/S Fail-safe spring
WO2012130944A1 (en) * 2011-03-30 2012-10-04 Welltec A/S Hydraulic assembly
EP2505771A1 (en) * 2011-03-30 2012-10-03 Welltec A/S Arm assembly
CN103477022A (en) * 2011-03-30 2013-12-25 韦尔泰克有限公司 Arm assembly
CN103477023A (en) * 2011-03-30 2013-12-25 韦尔泰克有限公司 Torque member
EP2505772A1 (en) * 2011-03-30 2012-10-03 Welltec A/S Hydraulic assembly
US9708873B2 (en) 2011-03-30 2017-07-18 Welltec A/S Hydraulic assembly
US9523253B2 (en) 2011-03-30 2016-12-20 Welltec A/S Torque member
US9097087B2 (en) 2011-03-30 2015-08-04 Welltec A/S Fail-safe spring
EP2505768A1 (en) * 2011-03-30 2012-10-03 Welltec A/S Modular downhole tool
US9518437B2 (en) 2011-03-30 2016-12-13 Welltec A/S Modular downhole tool
US9512688B2 (en) 2011-03-30 2016-12-06 Welltec A/S Arm assembly
WO2015036574A3 (en) * 2013-09-13 2015-06-25 Maersk Olie Og Gas A/S Downhole propulsion apparatus
US10683719B2 (en) 2014-01-24 2020-06-16 Qinterra Technologies As Wireline tractor comprising a disc-shaped cutting device for perforating of a tubing wall and method for perforating a tubing wall
WO2015112022A1 (en) * 2014-01-24 2015-07-30 Altus Intervention As Wireline tractor comprising a disc-shaped cutting device for perforating of a tubing wall and method for perforating a tubing wall
GB2538403A (en) * 2014-01-24 2016-11-16 Qinterra Tech As Wireline tractor comprising a disc-shaped cutting device for perforating of a tubing wall and method for perforating a tubing wall
GB2538403B (en) * 2014-01-24 2020-08-26 Qinterra Tech As Wireline tractor comprising a disc-shaped cutting device for perforating of a tubing wall and method for perforating a tubing wall
WO2019009734A1 (en) * 2017-07-06 2019-01-10 Well Conveyor As A pulling tool for use in a wellbore and/or tubing and a propulsion module of a pulling tool
GB2585725A (en) * 2017-07-06 2021-01-20 Well Conveyor As A pulling tool for use in a wellbore and/or tubing and a propulsion module of a pulling tool
US11168522B2 (en) 2017-07-06 2021-11-09 Well Conveyor As Pulling tool for use in a wellbore and/or tubing and a propulsion module of a pulling tool
GB2585725B (en) * 2017-07-06 2022-09-28 Well Conveyor As A pulling tool for use in a wellbore and/or tubing and a propulsion module of a pulling tool
WO2019077308A1 (en) * 2017-10-05 2019-04-25 Petróleo Brasileiro S. A. - Petrobras Device for centring and/or pulling a tool in a pipeline
US20200332606A1 (en) * 2017-10-05 2020-10-22 Petróleo Brasileiro S. A. - Petrobras Device for centring and/or pulling a tool in a pipeline
NO345947B1 (en) * 2020-06-03 2021-11-08 Well Innovation As Pulling tool
US11970918B2 (en) 2020-06-03 2024-04-30 Well Innovation As Pulling tool
CN111991579A (en) * 2020-08-26 2020-11-27 梁双鸾 A disinfection belt cleaning device for medical treatment gynaecology and obstetrics's disk household utensils
CN111991579B (en) * 2020-08-26 2022-01-11 刘海燕 A disinfection belt cleaning device for medical treatment gynaecology and obstetrics's disk household utensils

Also Published As

Publication number Publication date
EP1880077A4 (en) 2015-04-01
NO20052085L (en) 2006-10-30
NO324404B1 (en) 2007-10-08
NO20052085D0 (en) 2005-04-28
EP1880077A1 (en) 2008-01-23

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