WO2018040283A1 - 一种连续油管夹持装置及采用该夹持装置的注入头 - Google Patents

一种连续油管夹持装置及采用该夹持装置的注入头 Download PDF

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Publication number
WO2018040283A1
WO2018040283A1 PCT/CN2016/105135 CN2016105135W WO2018040283A1 WO 2018040283 A1 WO2018040283 A1 WO 2018040283A1 CN 2016105135 W CN2016105135 W CN 2016105135W WO 2018040283 A1 WO2018040283 A1 WO 2018040283A1
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Prior art keywords
clamping
plastic
coiled tubing
ribs
injection head
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PCT/CN2016/105135
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English (en)
French (fr)
Inventor
胡郁乐
刘志强
赵钧羡
赵秀和
段隆臣
胡新丽
李波
崔世明
丁扬扬
崔一洲
丁跃翔
姚林丽
沈笑宇
孙奉存
王所根
韩晶晶
Original Assignee
江苏和信石油机械有限公司
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Publication of WO2018040283A1 publication Critical patent/WO2018040283A1/zh

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    • 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
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/22—Handling reeled pipe or rod units, e.g. flexible drilling pipes

Definitions

  • the present invention belongs to the field of oil drilling equipment, and more particularly to a coiled tubing clamping device and an injection head using the same.
  • Coiled tubing (CT) technology can be traced back to the subsea pipeline "PLUTO" project during the Second World War
  • coiled tubing operation technology involves various stages of oil production, drilling and logging in the oil and gas industry, not only in the development of traditional operations, but also in new operations such as Cement, salvage, logging, reaming, descaling, completion and drilling, and permanent oil recovery have all developed rapidly. With its wide adaptability, high efficiency of logging, drilling, outstanding low cost, and low environmental pollution, this technology has become an important direction for the development of petroleum mining technology.
  • the clamping device is one of the main components of the continuous pipe injection head.
  • the structure and type of the clamping device have also undergone many changes, and the type of the continuous pipe clamping device is more According to the shape, there are circular arc and V-shaped.
  • the arc-shaped clamping block has a large contact area, and the coiled tubing has little damage, but only the coiled tubing of fixed diameter can be clamped, and the V-shaped clamping device can clamp the tubing of different diameters.
  • the area of the force is small, the tubing is easily deformed locally; the whole structure and the combination are classified according to the structure, and the monolithic structure is simple and easy to manufacture.
  • the inner surface of the clamping block has a smooth surface, a ribbed surface and Coating the cemented carbide layer; the ribbed surface can apply more force, the friction is large, and the edge of the same surface can also clean the surface of the oil pipe; the coating of the hard alloy layer can reduce the clamping block pair Tubing pressure Force, increase the friction of the clamp block on the oil pipe, and greatly improve the service life of the oil pipe.
  • the clamping block with the prismatic surface is repeatedly in contact with the coiled tubing, the clamping surface of the clamping block is easily worn or damaged, and the prismatic clamping block is clamping the coiled tubing. ⁇ , the force area is small, easy to stress concentration, repeated contact, the surface of the coiled tubing is prone to damage or deformation, especially when the coiled tubing is partially bent, this damage is more obvious.
  • the object of the present invention is to provide a novel coiled tubing clamping device for reducing the wear of the inner surface of the clamping block and the damage to the coiled tubing, and also increasing the clamping block. Clamping the clamping force of the oil pipe improves the operation of the equipment and prolongs the service life of the equipment.
  • a coiled tubing injection head clamping device comprising a clamping block and a clamping seat, a transmission chain, wherein the clamping block is movably connected to the clamping seat, the clamping The holder is fixedly connected with the drive chain to form the entire injection head clamping device;
  • the inner surface of the clamping block is a ladder-shaped clamping port, and the bottom of the clamping opening is a circular arc shape, and clamping edges and grooves are respectively arranged on opposite sides of the clamping opening, wherein the clamping
  • the rib includes a plastic clamping rib and a hard clamping rib
  • the plastic clamping rib and the hard clamping rib are staggered
  • the plastic clamping rib and the hard clamping ridge are different in height D, wherein the plastic clamping rib is 0.5-5 mm higher than the hard clamping rib, wherein the height difference D is according to the clamping
  • the diameter of the coiled tubing and the depth setting of the operation preferably the height difference is 1 mm;
  • the plastic clamping rib and the hard clamping rib are distributed on both sides of the inner surface of the clamping block in two forms.
  • the plastic clamping ribs on both sides of the inner surface and the hard clamping ribs are respectively arranged in one-to-one correspondence, and the plastic clamping ribs and the hard clamping ribs on both sides of the inner surface are respectively staggered;
  • the clamping ribs of the inner surface of the clamping block 1 may be arranged in a wave shape in addition to being arranged in a strip shape;
  • the plastic clamping rib is movably connected with the body of the clamping block, the plastic clamping rib comprises a plastic strip and a mounting base, and the plastic strip is inserted into the groove of the mounting base, when the plastic strip Damaged or worn out, it can be easily replaced, saving time and cost.
  • the mounting base can be integrally formed with the body of the clamping block.
  • a threaded hole can be reserved in the plastic strip.
  • the plastic strip may be made of a resilient, wear resistant composite material such as polyurethane, wear resistant rubber, and the like.
  • the beneficial effects of the present invention are: providing a plastic clamping edge on the inner surface of the injection head clamping block, and the plastic clamping edge is slightly higher than the hard clamping edge, when the injection head clamping device applies a stress to clamp the oil pipe, Since the existence of the plastic clamping ribs effectively alleviates part of the clamping stress, the wear of the inner surface of the clamping block and the damage to the coiled tubing can be effectively reduced, and the clamping force of the clamping device clamping the oil pipe can be increased, and the device is improved.
  • the operation effect is extended to extend the service life of the equipment; when the oil pipe is partially bent, due to the existence of the plastic clamping rib, the bending portion can be used for buffering and damping, and the oil pipe is not destroyed due to excessive concentration of stress;
  • the ribs are mounted on the inner surface of the clamping block. When the plastic clamping ribs are worn out, the replacement can be easily and conveniently replaced, which greatly saves the maintenance time, reduces the working cost and improves the working efficiency.
  • FIG. 1 is a structural view of an injection head clamping system of the present invention
  • FIG. 2 is a structural view of the inner surface of the clamping block of the present invention.
  • FIG. 3 is a height difference diagram of a plastic clamping rib and a rigid clamping rib of the present invention
  • FIG. 4A is a one-to-one correspondence diagram of the clamping ribs of the present invention.
  • FIG. 4B is a cross-sectional view of the clamping ribs of the present invention.
  • FIG. 5 is a layout view of a wave-shaped clamping rib
  • FIG. 6 is a schematic view of a movable installation of a plastic strip.
  • an injection head clamping device includes a clamping block 1, a clamping seat 2 and a transmission chain 3, wherein the clamping block 1 is movably connected to the clamping seat 2, and the clamping seat 2 Fixedly connected with the drive chain 3 to form the entire injection head clamping device;
  • the inner surface of the clamping block 1 is a trapezoidal shaped clamping port, and the bottom of the clamping opening has a circular arc shape, and clamping edges are respectively arranged on opposite sides of the clamping opening.
  • the groove 1-1 wherein the clamping rib comprises a plastic clamping rib 1-2 and a hard clamping rib 1-3, the plastic clamping rib 1-2 and the hard clamping rib 1-3 interlaced Arrange
  • the plastic clamping rib 1-2 is different in height D from the hard clamping rib 1-3, wherein the plastic clamping rib 1-2 is larger than the hard clip.
  • the edge 1-3 is 0.5-5 mm higher, wherein the height difference D is set according to the diameter of the clamped coiled tubing and the depth of the work, preferably the height difference is 1 mm;
  • the plastic clamping rib 1-2 and the hard clamping rib 1-3 are distributed on both sides of the inner surface of the clamping block in two forms, in FIG. 4A. , the plastic clamping ribs 1-2 on both sides of the inner surface and the hard clamping ribs 1-3 are respectively arranged one by one, and in FIG. 4B, the plastic clamping ribs 1-2 and the hard clamping ribs on both sides of the inner surface 1-3 are staggered separately;
  • the clamping ribs of the inner surface of the clamping block 1 may be arranged in a wave shape in addition to the strip shape shown in FIG.
  • the plastic clamping rib 1-2 is movably connected with the body of the clamping block 1, and the plastic clamping rib 1-2 includes a plastic strip 1-2-1 and a mounting base. 1-2-2, the plastic strip
  • [0030] 1-2-1 is inserted in the slot of the mounting base 1-2-2, and when the plastic strip 1-2-1 is damaged or worn seriously, it can be easily replaced, saving time and cost.
  • the mounting base 1-2-2 can be integrally formed with the body of the clamping block 1, and in addition to the plug connection, a threaded hole can be reserved in the plastic strip 1-2-1, which will be passed through the screw 1-2-3.
  • the plastic strip 1-2-1 is mounted on the body of the clamping block 1; the rigid clamping rib 1-3 is integrally formed with the body of the clamping block 1
  • the plastic strip 1-2-1 may be made of a resilient, wear-resistant composite material such as polyurethane, wear-resistant rubber, or the like;

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  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Clamps And Clips (AREA)
  • Earth Drilling (AREA)
  • Supports For Pipes And Cables (AREA)

Abstract

公开了一种连续油管夹持装置及采用夹持装置的注入头，夹持装置的夹持块（1）内表面为类梯形状的夹持口，夹持口的底部为圆弧形，在夹持口的两侧分别相间分布有夹持棱和沟槽（1-1），其中夹持棱包括相隔设置的塑性夹持棱（1-2）和硬质夹持棱（1-3），塑性夹持棱（1-2）和硬质夹持棱（1-3）交错布置，夹持装置可以减少夹持块内表面的磨损和对连续油管的损害，同时还可以增加夹持块夹持油管的夹紧力，提高了设备的操作效果和工作效率，延长设备的使用寿命。

Description

说明书 发明名称：一种连续油管夹持装置及釆用该夹持装置的注入头 技术领域
[0001] 本发明属于石油钻采设备领域， 特别涉及一种连续油管夹持装置， 以及采用该 夹持装置的注入头。
背景技术
[0002] 连续油管 （CT) 技术可追溯至第二次世界大战期间的海底管线" PLUTO"工程
， 1962年加利福尼亚石油公司和 Bowen工具公司幵发了一台 "轻型连续管修井样 机"， 并在美国墨西哥湾的油气井上用于冲砂作业， 1976年加拿大发明家 Ben Gray研发了第一套真正意义上的刚性管连续油管钻机， 此后经历了飞速发展， 到目前为止连续油管技术已经成为石油天然气勘探幵发领域中一项日益完善的 新技术， 连续油管技术由于其应用范围广， 使用方便， 而被誉为"万能作业装备 "， 连续油管作业技术在石油与天然气工业中涉及采油、 钻井、 测井的各个阶段 ， 不但在传统作业内容方面有新的发展， 而且在新的作业如注水泥、 打捞、 测 井、 扩眼、 除垢、 完井和钻井及永久性采油等各方面迅速发展起来。 该项技术 以其广泛的适应性， 测井、 钻井的高效性， 突出的低成本性， 以及对环境低污 染等特点， 已成为石油幵采技术发展的重要方向。
[0003] 夹持装置作为连续管注入头的主要部件之一， 随着连续油管技术与装备的不断 进步和发展， 夹持装置结构和类型也发生了诸多变化， 连续管夹持装置类型较 多， 按形状分类有圆弧形和 V形， 圆弧形夹持块接触面积大， 连续油管伤害小， 但是只能夹持固定直径的连续油管， V形夹持装置可夹持不同直径的油管， 但受 力面积小， 油管易局部变形； 按结构分类有整体式和组合式， 整体式结构简单 ， 便于制造
[0004] 加工， 但不便于更换、 拆卸； 组合式便于快速更换， 组合式连接方式多样， 销 轴连接、 弹簧挡片以及卡合连接等； 夹持块内表面有光滑表面， 棱型表面和涂 覆硬质合金层； 棱型表面可以施加更大的力， 摩擦力大， 同吋表面的棱还可以 起到清理油管表面油污的作用； 涂覆硬质合金层可以可降低夹持块对油管的压 力， 增加夹持块对油管的摩擦力， 大大提高油管的使用寿命。
[0005] 在注入头操作过程中， 带有棱形表面的夹持块与连续油管反复接触， 夹持块的 夹持表面很容易磨损或损坏， 且棱形的夹持块在夹紧连续油管吋， 受力面积小 ， 容易应力集中， 反复接触， 连续油管表面局部容易产生破坏或变形， 尤其当 连续油管局部弯曲吋， 这种损害更加明显。
技术问题
[0006] 本发明的目的在于针对现有技术的不足， 提供一种新型的连续油管夹持装置， 可以减少夹持块内表面的磨损和对连续油管的损害， 同吋还可以增加夹持块夹 持油管的夹紧力， 提高了设备的操作效果， 延长设备的使用寿命。
问题的解决方案
技术解决方案
[0007] 本发明为实现上述目的采用的技术方案是： 一种连续油管注入头夹持装置， 包 括夹持块及夹持座， 传动链条， 其中夹持块活动连接于夹持座上， 夹持座与传 动链条固定连接， 进而形成整个注入头夹持装置；
[0008] 所述夹持块内表面为类梯形状的夹持口， 夹持口的底部为园弧形， 在夹持口的 两侧分别相间分布有夹持棱和沟槽， 其中夹持棱包括塑性夹持棱和硬质夹持棱
， 所述塑性夹持棱和所述硬质夹持棱交错布置；
[0009] 所述塑性夹持棱与所述硬质夹持棱高度上相差 D， 其中所述塑性夹持棱比所述 硬质夹持棱高出 0.5-5mm， 其中高度差 D根据夹持连续油管的直径和作业的深度 设置， 优选高度差为 lmm;
[0010] 所述塑性夹持棱和所述硬质夹持棱在夹持块内表面的两侧分布情形有两种形式
， 内表面两侧的塑性夹持棱和硬质夹持棱分别一一对应布置， 内表面两侧的塑 性夹持棱和硬质夹持棱分别交错布置；
[0011] 夹持块 1内表面的夹持棱除了设置为条状外还可以设置为波浪状；
[0012] 所述塑性夹持棱与夹持块的本体为活动连接， 所述塑性夹持棱包括塑性条和安 装基座， 所述塑性条插接在安装基座的槽中， 当塑性条损坏或磨损严重吋， 可 以很方便进行更换， 节约了吋间和成本， 安装基座可与夹持块的本体一体成型 ， 除了插接的连接方式， 也可以在塑性条中预留螺纹孔， 通过螺钉将塑性条安 装在夹持块的本体上； 硬质夹持棱与夹持块本体一体成型；
[0013] 所述的塑性条可由具有弹性的、 耐磨的复合材料， 如聚氨酯、 耐磨橡胶等材料 制成。
发明的有益效果
有益效果
[0014] 本发明的有益效果是： 在注入头夹持块内表面设置塑性夹持棱， 且塑性夹持棱 稍高于硬性夹持棱， 当注入头夹持装置施加应力夹持油管吋， 由于塑性夹持棱 的存在有效缓解部分夹持应力， 可有效减少夹持块内表面的磨损和对连续油管 的损害， 同吋还可以增加夹持装置夹持油管的夹紧力， 提高了设备的操作效果 ， 延长设备的使用寿命； 当油管存在局部弯曲， 由于塑性夹持棱的存在， 对弯 曲部位可起到缓冲减震的作用， 不会由于应力的过度集中而破坏油管； 塑性夹 持棱活动安装于夹持块内表面， 当塑性夹持棱磨损严重吋， 可以简单方便进行 更换， 大大节约了维修吋间， 降低了工作成本， 提高了工作效率。
对附图的简要说明
附图说明
[0015] 图 1为本发明的注入头夹持系统的结构图；
[0016] 图 2为本发明的夹持块内表面结构图；
[0017] 图 3为本发明的塑性夹持棱和硬性夹持棱的高度差图；
[0018] 图 4A为本发明夹持棱一一对应布置图；
[0019] 图 4B为本发明夹持棱交错布置图；
[0020] 图 5为波浪形夹持棱布置图；
[0021] 图 6为塑性条活动式安装示意图。
[0022] 附图标记： 1， 夹持块； 1-1， 沟槽； 1-2， 塑塑性夹持棱； 1-2-1， 塑性条； 1-2- 2， 安装基座； 1-2-3， 螺钉； 1-3， 硬性夹持棱； 2， 夹持座； 3， 传动链条。
本发明的实施方式
[0023] 下面将结合附图对本发明具体实施方式作详细说明： [0024] 如图 1所示， 一种注入头夹持装置， 包括夹持块 1， 夹持座 2及传动链条 3， 其中 夹持块 1活动连接于夹持座 2上， 夹持座 2与传动链条 3固定连接， 进而形成整个 注入头夹持装置；
[0025] 如图 2所示， 所述夹持块 1内表面为类梯形状的夹持口， 夹持口的底部为园弧形 ， 在夹持口的两侧分别相间分布有夹持棱和沟槽 1-1， 其中夹持棱包括塑性夹持 棱 1-2和硬质夹持棱 1-3， 所述塑性夹持棱 1-2和所述硬质夹持棱 1-3交错布置；
[0026] 如图 3所示， 所述塑性夹持棱 1-2与所述硬质夹持棱 1-3高度上相差 D， 其中所述 塑性夹持棱 1-2比所述硬质夹持棱 1-3高出 0.5-5mm， 其中高度差 D根据夹持连续 油管的直径和作业的深度设置， 优选高度差为 lmm;
[0027] 如图 4A， 4B所示， 所述塑性夹持棱 1-2和所述硬质夹持棱 1-3在夹持块内表面的 两侧分布情形有两种形式， 图 4A中， 内表面两侧的塑性夹持棱 1-2和硬质夹持棱 1-3分别一一对应布置， 图 4B中， 内表面两侧的塑性夹持棱 1-2和硬质夹持棱 1-3 分别交错布置；
[0028] 如图 5所示， 夹持块 1内表面的夹持棱除了设置为图 1-4所示的条状外还可以设 置为波浪状；
[0029] 如图 6所示， 所述塑性夹持棱 1-2与夹持块 1的本体为活动连接， 所述塑性夹持 棱 1-2包括塑性条 1-2-1和安装基座 1-2-2， 所述塑性条
[0030] 1-2-1插接在安装基座 1-2-2的槽中， 当塑性条 1-2-1损坏或磨损严重吋， 可以很 方便进行更换， 节约了吋间和成本， 安装基座 1-2-2可与夹持块 1的本体一体成型 ， 除了插接的连接方式， 也可以在塑性条 1-2-1中预留螺纹孔， 通过螺钉 1-2-3将 塑性条 1-2-1安装在夹持块 1的本体上； 硬质夹持棱 1-3与夹持块 1的本体一体成型
[0031] 所述的塑性条 1-2-1可由具有弹性的、 耐磨的复合材料， 如聚氨酯、 耐磨橡胶等 材料制成；
[0032] 上述实施例只是为了说明本发明的技术构思及特点， 其目的是在于让本领域内 的普通技术人员能够了解本发明的内容并据以实施， 并不能以此限制本发明的 保护范围。 凡是根据本发明内容的实质所作出的等效的变化或修饰， 都应涵盖 在本发明的保护范围内。

Claims

权利要求书
一种连续油管注入头夹持装置， 包括夹持块 （1) ， 所述夹持块 （1) 的内表面为类梯形状的夹持口， 夹持口的底部为园弧形， 在夹持口的 两侧都相间分布有夹持棱和沟槽 （1-1) ， 夹持棱与沟槽 （1-1) 交错 布置， 其特征在于， 所述夹持棱包括塑性夹持棱 （1-2) 和硬质夹持 棱 （1-3) ， 所述塑性夹持棱 （1-2) 和所述硬质夹持棱 （1-3) 交错布 置于两个侧面上。
根据权利要求 1所述的连续油管注入头夹持装置， 所述塑性夹持棱 （1 -2) 与所述硬质夹持棱 （1-3) 高度上相差 D (Ό≠0) ， 其中所述塑性 夹持棱 （1-2) 比所述硬质夹持棱 （1-3) 高出 0.5-5mm。
根据权利要求 2所述的连续油管夹持装置， 内表面两侧的塑性夹持棱
(1-2) 和硬质夹持棱 （1-3) 分别一一对应布置。
根据权利要求 2所述的连续油管注入头夹持装置， 内表面两侧的塑性 夹持棱 （1-2) 和硬质夹持棱 （1-3) 分别交错布置。
根据权利要求 1所述的连续油管注入头夹持装置， 所述塑性夹持棱 （1 -2) 与夹持块 （1) 的本体活动连接， 所述塑性夹持棱 （1-2) 包括塑 性条 （1-2-1) 和安装基座 （1-2-2) ， 所述塑性条 （1-2-1) 插接在安 装基座 （1-2-2) 的槽中， 当塑性条 （1-2-1) 损坏或磨损严重吋， 可 以很方便进行更换， 节约了吋间和成本， 安装基座 （1-2-2) 可与夹 持块 （1) 的本体一体成型。
根据权利要求 1所述的连续油管注入头夹持装置， 在所述塑性夹持棱 (1-2) 的塑性条 （1-2-1) 中预留螺纹通孔， 通过螺钉 （1-2-3) 将塑 性条 （1-2-1) 安装在夹持块 （1) 的本体上。
根据权利要求 5所述的连续油管注入头夹持装置， 所述的塑性条 （1-2 -1) 可由具有弹性的、 耐磨的复合材料， 如聚氨酯、 耐磨橡胶等材料 制成。
根据权利要求 1所述的连续油管注入头夹持装置， 所述夹持块 （1) 内 表面的夹持棱可设置为条带状或波浪状。 [权利要求 9] 一种连续油管注入头， 其特征在于： 包括权利要求 1-8任一项所述的 连续油管注入头夹持装置。
PCT/CN2016/105135 2016-08-30 2016-11-09 一种连续油管夹持装置及采用该夹持装置的注入头 WO2018040283A1 (zh)

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