WO2012167356A1 - Procédé de remise en état de tube - Google Patents

Procédé de remise en état de tube Download PDF

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Publication number
WO2012167356A1
WO2012167356A1 PCT/CA2012/000544 CA2012000544W WO2012167356A1 WO 2012167356 A1 WO2012167356 A1 WO 2012167356A1 CA 2012000544 W CA2012000544 W CA 2012000544W WO 2012167356 A1 WO2012167356 A1 WO 2012167356A1
Authority
WO
WIPO (PCT)
Prior art keywords
tubing
threaded
upset
nipple
cut
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.)
Ceased
Application number
PCT/CA2012/000544
Other languages
English (en)
Inventor
Russel MOORE
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of WO2012167356A1 publication Critical patent/WO2012167356A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK 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
    • E21B17/042—Threaded
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P6/00—Restoring or reconditioning objects
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L13/00—Non-disconnectable pipe joints, e.g. soldered, adhesive, or caulked joints
    • F16L13/02—Welded joints
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
    • F16L15/006—Screw-threaded joints; Forms of screw-threads for such joints with straight threads

Definitions

  • the present disclosure relates in general to methods for reconditioning used and damaged steel pipe, particularly pipe used as production tubing in the oil and gas industry.
  • a string of steel production tubing is positioned in the wellbore and extends from a subsurface production zone up to a pump jack at the surface.
  • Typical production tubing has a nominal diameter of 2, 21 ⁇ 2, 3, or 4 inches (with respective actual outside diameters of 2.375, 2.875, 3.500, and 4.500 inches).
  • the tubing is provided in lengths (or "joints") up to 30 feet long, with external threads on each end.
  • the tubing string is made up by connecting multiple tubing joints end to end, using tubular couplings having internal threads matching the external threads on the tubing joints.
  • a downhole pump is disposed within the production tubing in the production zone to raise well fluids (e.g., oil, gas, formation water) to the surface, by reciprocating vertical movement of a travelling valve incorporated into the pump.
  • the travelling valve is reciprocated by a steel "sucker rod” extending upward within the production tubing to the wellhead, where it connects to a polished rod extending upward through a wellhead tee and stuffing box.
  • the upper end of the polished rod is connected to what is commonly called the "horse head" at the free end of the "walking beam” of the pump jack.
  • the pump jack is operable to rock the walking beam such that the horse head reciprocates up and down, thereby alternately raising and lowering the sucker rod and the travelling valve, causing well fluids to be drawn into the well and into the production tubing, and moved upward within the production tubing toward the wellhead on each upward stroke of the travelling valve.
  • the sucker rod reciprocates up and down within the production tubing, it inevitably comes into contact with the inside wall of the tubing. The resultant friction between the steel sucker rod and the steel tubing causes wear on the rod and the tubing.
  • well fluids may also be produced using a wellhead apparatus that rotates the sucker rod to drive a downhole screw pump (also known as a positive displacement pump), rather than reciprocating the sucker rod up and down.
  • a downhole screw pump also known as a positive displacement pump
  • rotating sucker rods thus function differently than reciprocating sucker rods, they are nonetheless prone to friction-induced wear due to contact with the tubing and can cause wear to the inner wall of the tubing.
  • the machining of threads onto the ends of the tubing joints reduces the tubing's cross-sectional area, and therefore also decreases the tubing's structural strength.
  • pipe used for production tubing is commonly manufactured with "upset ends" - meaning that the outside diameter of the tubing is increased in the end regions that will be threaded, while the inside diameter (or I.D.) remains constant.
  • the increase in diameter is equal to at least twice the depth of the threads, the minimum radial thickness of the wall of the upset end of the tubing will be equal to or greater than the wall thickness of the main portion of the tubing.
  • Production tubing is selected to have a wall thickness that will allow the tubing to remain safely in service even after some loss of wall thickness due to abrasion and wear.
  • Tubing is periodically inspected for loss of wall thickness, and color-coded bands are applied to used tubing joints to indicate how much wall thickness has been lost. For example, a yellow band indicates 0-15% loss of wall thickness, a blue band 16-30%, a green band 31-50%, and a red band more than 50% loss of wall thickness. It may be appreciated, therefore, that a given joint of tubing could be in generally serviceable condition despite some loss of wall thickness, but the joint could nonetheless be unusable if there is significant damage to the upset threaded ends due to abrasion, impact (such as during pipe handling and transport), or other causes. A large quantity of used tubing is scrapped every year for such reasons. This result in a large waste of money and resources to replace the scrapped pipe with new pipe, when the scrapped pipe may well have been quite serviceable except for damage to the threaded ends.
  • a tubing nipple of known type having threaded ends is transversely cut to produce two tubing nipple segments, and the unserviceable upset ends of the tubing joint are cut off and discarded.
  • a tubing nipple segment is then substantially coaxially mated to and welded to each cut-off end of the serviceable tubing portion.
  • the tubing nipple is preferably selected to have an inner diameter corresponding to the inner diameter of the tubing joint, and to have a net cross-sectional area through its threaded regions at least equal to the minimum cross-sectional area of the serviceable tubing portion.
  • the present disclosure teaches a method for reconditioning a tubing joint comprising a tubing portion extending between threaded upset ends wherein at least one of the threaded upset ends is unserviceble, said method comprising the steps of:
  • the disclosure teaches a tubing joint comprising a tubing portion having at least one upset threaded end, wherein the upset threaded end is cut from a tubing nipple and welded to one end of the tubing portion.
  • the disclosure teaches a method for reconditioning a tubing joint comprising a tubing portion extending between threaded upset ends wherein the tubing portion is unserviceable and at least one of the threaded upset ends is serviceable, said method comprising the steps of:
  • the disclosure teaches a tubing joint comprising a tubing portion having at least one upset threaded end, wherein the upset threaded end is cut from a tubing joint comprising a tubing portion having at least one upset threaded end, with the upset threaded end being salvaged from a damaged tubing joint and welded to one end of the tubing portion.
  • FIGURE 1 illustrates a conventional tubing nipple externally threaded at each end.
  • FIGURE 2 illustrates a tubing nipple as in FIG. 1 after being transversely cut into two tubing nipple segments for purposes of methods in accordance with the present disclosure.
  • FIGURE 3 illustrates an end portion of a tubular member having an externally- threaded upset end, with the threaded upset end being unserviceable and at least part of the non-upset length of the tubular member being serviceable.
  • FIGURE 4 illustrates an end portion of a tubular member as in FIG. 3 after the unserviceable upset end has been removed and a tubing nipple segment as in FIG. 2 has been welded onto the salvaged serviceable length of tubing remaining after removal of the unserviceable upset end.
  • FIGURE 5 illustrates a salvaged serviceable length of tubing with a replacement end as in FIG. 4, indicating the optional removal of excess material after attachment of a tubing nipple segment.
  • FIG. 1 illustrates an EUE 8RD tubing nipple 10 of a type well known to persons knowledgeable in the field.
  • Tubing nipple 10 is essentially a straight piece of pipe having an inner diameter 11 and external threads 12 at each end, and tubing nipples of this type are available in a number of diameters.
  • a tubing nipple 10 of appropriate inside diameter and wall thickness is cut along a transverse cut-off line X as shown, to produce two tubing nipple segments 10A having cut ends 15 as shown in FIG. 2, which can then be used to fabricate replacement ends for damaged tubing joints.
  • FIG. 3 illustrates an end region of a joint 20 of used tubing having an inner diameter 21 and a threaded upset end 24 that is unacceptably worn or otherwise damaged and therefore unserviceable, but also having a non-upset portion 22 that is still serviceable.
  • the unserviceable upset tubing end 24 is cut off along a transverse cut-off line Y and discarded.
  • FIG. 4 illustrates an end region of a reconditioned tubing joint 30 fabricated in accordance with the present method by substantially coaxially abutting the cut end 15 of a tubing nipple segment 10A against the cut-off end of a serviceable portion 22 of a used tubing joint 20 and welding tubing nipple segment 10A to used tubing portion 22 as indicated by weld 32.
  • Tubing nipple segment 10A is preferably selected to have an inner diameter 11 corresponding to the inner diameter 21 of used tubing portion 22, and also to have threads 12 matching the threads on the discarded unserviceable upset tubing ends 24, thus facilitating the use of the same type of tubular couplings.
  • tubing nipple segment 10A having a larger outside diameter than the salvaged tubing portion 22, is preferably trimmed to provide a smooth transition with the cut-off end of salvaged tubing portion 22, generally as indicated by reference number 34. This step may be carried out either before or after tubing nipple segment 10A is welded to salvaged tubing portion 22.
  • the cut-off ends of tubing portion 22 and/or the cut ends 15 of tubing nipple segments 10A are preferably prepared to facilitate full-penetration welding to connect tubing nipple segments 10A to tubing portion 22.
  • the steps of cutting tubing nipple 10 into two tubing nipple segments 10A and cutting off the unserviceable tubing end 24 will be carried out using automated (e.g., robotic) equipment to minimize or eliminate the need for subsequent machining of the cut surfaces to ensure a suitably mating fit.
  • An unillustrated alternative tubing reconditioning method may be used to recondition tubing in which the tubing portion between the threaded upset ends is unserviceable due to damage or excessive wear but the threaded upset ends are still serviceable.
  • the serviceable threaded upset ends are cut off from the unserviceable tubing, and then welded onto either a length of new tubing or a length of used but serviceable tubing from which damaged ends have been cut off.
  • any form of the word "comprise” is to be understood in its non-limiting sense to mean that any item following such word is included, but items not specifically mentioned are not excluded.
  • a reference to an element by the indefinite article “a” does not exclude the possibility that more than one of the element is present, unless the context clearly requires that there be one and only one such element.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)

Abstract

L'invention concerne un procédé de remise en état d'un joint de tube ayant une partie de tube utilisable et des extrémités refoulées filetées non utilisables, un mamelon de tube ayant des extrémités filetées étant coupé dans le sens transversal pour produire deux segments de mamelon de tube, et les extrémités refoulées non utilisables du joint de tube étant coupées et jetées. Un segment de mamelon de tube est alors accouplé de manière coaxiale et soudé à chaque extrémité coupée de la partie de tube utilisable. Le mamelon de tube est sélectionné de préférence pour avoir un diamètre intérieur correspondant au diamètre intérieur du joint de tube, et pour avoir une superficie de section transversale nette au travers de ses régions filetées au moins égale à la superficie de section transversale minimale de la partie de tube utilisable.
PCT/CA2012/000544 2011-06-05 2012-06-05 Procédé de remise en état de tube Ceased WO2012167356A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201161493472P 2011-06-05 2011-06-05
US61/493,472 2011-06-05

Publications (1)

Publication Number Publication Date
WO2012167356A1 true WO2012167356A1 (fr) 2012-12-13

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Family Applications (1)

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PCT/CA2012/000544 Ceased WO2012167356A1 (fr) 2011-06-05 2012-06-05 Procédé de remise en état de tube

Country Status (1)

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WO (1) WO2012167356A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104690484A (zh) * 2013-12-04 2015-06-10 铜陵市永生机电制造有限责任公司 铝材挤压机液压油管裂漏处理方法
WO2015127526A1 (fr) * 2014-02-28 2015-09-03 Lifting Solutions Energy Services Inc. Procédés permettant de remplacer des extrémités de broche et de réparer des revêtements sur des tiges de pompage continues revêtues
CN109332992A (zh) * 2018-11-09 2019-02-15 江苏亨通海洋光网系统有限公司 一种海底光缆铜带馈电层的补丁式修补工艺
CN110640393A (zh) * 2019-10-17 2020-01-03 上海电气电站设备有限公司 重型燃气轮机燃烧器的焊接修复方法
CN112059529A (zh) * 2020-09-07 2020-12-11 中国航发沈阳黎明航空发动机有限责任公司 一种航空发动机用薄壁钛合金导管接头内壁磨损修复方法
CN114952111A (zh) * 2022-05-20 2022-08-30 国家石油天然气管网集团有限公司 用于长输管道的焊接方法及焊接装置、处理器及存储介质
CN115949814A (zh) * 2023-02-07 2023-04-11 北京恩菲环保股份有限公司 管道结构及混凝土供水管路的维修方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3520561A (en) * 1968-07-22 1970-07-14 Global Marine Inc Pipe coupling
US4676528A (en) * 1984-04-30 1987-06-30 Gray Theodor R Method and apparatus for restoring tubular upsets
US6405761B1 (en) * 1998-10-08 2002-06-18 Daido Tokushuko Kabushiki Kaisha Expandable metal-pipe bonded body and manufacturing method thereof
US7125053B2 (en) * 2002-06-10 2006-10-24 Weatherford/ Lamb, Inc. Pre-expanded connector for expandable downhole tubulars

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3520561A (en) * 1968-07-22 1970-07-14 Global Marine Inc Pipe coupling
US4676528A (en) * 1984-04-30 1987-06-30 Gray Theodor R Method and apparatus for restoring tubular upsets
US6405761B1 (en) * 1998-10-08 2002-06-18 Daido Tokushuko Kabushiki Kaisha Expandable metal-pipe bonded body and manufacturing method thereof
US7125053B2 (en) * 2002-06-10 2006-10-24 Weatherford/ Lamb, Inc. Pre-expanded connector for expandable downhole tubulars

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104690484A (zh) * 2013-12-04 2015-06-10 铜陵市永生机电制造有限责任公司 铝材挤压机液压油管裂漏处理方法
WO2015127526A1 (fr) * 2014-02-28 2015-09-03 Lifting Solutions Energy Services Inc. Procédés permettant de remplacer des extrémités de broche et de réparer des revêtements sur des tiges de pompage continues revêtues
CN109332992A (zh) * 2018-11-09 2019-02-15 江苏亨通海洋光网系统有限公司 一种海底光缆铜带馈电层的补丁式修补工艺
CN109332992B (zh) * 2018-11-09 2019-08-20 江苏亨通海洋光网系统有限公司 一种海底光缆铜带馈电层的补丁式修补工艺
CN110640393A (zh) * 2019-10-17 2020-01-03 上海电气电站设备有限公司 重型燃气轮机燃烧器的焊接修复方法
CN110640393B (zh) * 2019-10-17 2022-04-22 上海电气电站设备有限公司 重型燃气轮机燃烧器的焊接修复方法
CN112059529A (zh) * 2020-09-07 2020-12-11 中国航发沈阳黎明航空发动机有限责任公司 一种航空发动机用薄壁钛合金导管接头内壁磨损修复方法
CN112059529B (zh) * 2020-09-07 2021-08-10 中国航发沈阳黎明航空发动机有限责任公司 一种航空发动机用薄壁钛合金导管接头内壁磨损修复方法
CN114952111A (zh) * 2022-05-20 2022-08-30 国家石油天然气管网集团有限公司 用于长输管道的焊接方法及焊接装置、处理器及存储介质
CN115949814A (zh) * 2023-02-07 2023-04-11 北京恩菲环保股份有限公司 管道结构及混凝土供水管路的维修方法

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