WO2020000914A1 - 一种反向旋转喷水式防卡钻钻杆系统及使用方法 - Google Patents

一种反向旋转喷水式防卡钻钻杆系统及使用方法 Download PDF

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Publication number
WO2020000914A1
WO2020000914A1 PCT/CN2018/120416 CN2018120416W WO2020000914A1 WO 2020000914 A1 WO2020000914 A1 WO 2020000914A1 CN 2018120416 W CN2018120416 W CN 2018120416W WO 2020000914 A1 WO2020000914 A1 WO 2020000914A1
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Prior art keywords
drill pipe
cylinder
water
reverse
rotation
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PCT/CN2018/120416
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English (en)
French (fr)
Inventor
谭云亮
刘学生
范德源
宁建国
徐强
蒋邦友
张广超
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山东科技大学
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Publication of WO2020000914A1 publication Critical patent/WO2020000914A1/zh

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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B31/00Fishing for or freeing objects in boreholes or wells
    • E21B31/03Freeing by flushing
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/006Accessories for drilling pipes, e.g. cleaners
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/22Rods or pipes with helical structure
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B21/00Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B21/00Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/10Valve arrangements in drilling-fluid circulation systems
    • E21B21/103Down-hole by-pass valve arrangements, i.e. between the inside of the drill string and the annulus
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B37/00Methods or apparatus for cleaning boreholes or wells
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Definitions

  • the present invention relates to the field of drilling construction equipment, and in particular, to a reverse-rotation water jet type anti-seizure drill pipe system and a method of using the same.
  • Drilling construction refers to the operation of drilling holes in a geological body by connecting a drilling tool to a drilling rig at a project site.
  • borehole construction is widely used in geotechnical engineering such as coal mine gas drainage, drainage and drainage, geological exploration, pressure relief for drilling and slope anchoring.
  • the cuttings accumulated in the drilling hole cannot be discharged in time, causing problems such as the rotation of the drill pipe and stuck drilling. In severe cases, buried or lost drilling may occur. . Once the stuck situation occurs, it will not only cause damage to the drill pipe and reduce the service life of the drilling tool, but also directly affect the drilling construction progress and reduce work efficiency.
  • Chinese Patent Application No. 201310051709.X discloses a lower sleeve device and a drilling method for drilling and slumping prevention of a coal seam while drilling, which involves drilling the sleeve and a drill pipe together. After that, the twist drill rod is withdrawn from the inside of the sleeve, and the sleeve is left in the borehole, to a certain extent, the problem of stuck drilling and withdrawal due to the collapse of the hole is avoided.
  • the design and construction process is complicated, the drilling efficiency is low, and leaving the sleeve in the borehole not only wastes construction materials, but also increases the cost of drilling construction.
  • the drill rods disclosed in the above two documents can only be drilled in one direction.
  • drilling construction in soft coal seams and intercalated coal seams such one-way drilled drill pipes are prone to broken gangue stuck drill bits or The phenomenon of coal seam collapsing and holding drill pipe occurred.
  • Chinese Patent Application No. 201410224253.7 discloses a reversed extraction device for realizing screw-connected spiral drill rod holding drills, which includes at least two screw-connected spiral drill rods.
  • the threaded connection between the drill rods passes through a keyway and a clamping table. fixed.
  • this patent can realize reverse extraction when a hole is held or stuck, because its drill pipe sprays water from the drill bit, the sprayed water is used for wet drilling construction. As the drilling depth increases, A stuck or held drill often appears outside the drill bit. Because there is no water spray hole on the drill, even if it is reversed, the cuttings accumulated in the hole cannot be discharged in a timely manner, causing problems such as the rotation of the drill pipe and stuck.
  • the water sprayed from the drill bit can also bring out cuttings, it takes a long time, especially when deep-hole stuck, the effect is poor, and the problems of stuck, buried and lost drilling cannot be completely solved.
  • the present invention intends to provide a reverse-rotation water-jet type anti-seizure drill rod system and a method for using the same to solve stuck, buried and lost drilling during drilling construction. And other issues.
  • a reverse rotation water jet type anti-seizure drill pipe system is characterized in that it comprises a front drill pipe arranged in order.
  • through holes are provided in the inner axial direction of the front drill rod and the rear drill rod;
  • the water spraying device includes a first cylinder body and a connecting body connected to each other, and the connecting body is fixedly connected to the front drill rod; a plurality of symmetrical sets of water spraying holes are provided on a side wall of the first cylinder body, and the first A stopper is provided above the inner side wall of a cylinder; a through-water delivery hole is also provided on the connecting body, the water delivery hole and the through-hole and the inside of the first cylinder Ministry connected
  • the rotating device includes a second cylinder and an annular partition connected to each other, and the second cylinder is fixedly connected to the rear drill pipe; the free end of the annular partition extends into the first cylinder, and The first cylinder is rotationally connected; the annular partition is also provided with an opening, and the limit stop of the water spray device is located in the opening;
  • the limit stop is used to restrict the ring-shaped partition plate from rotating to the working position or the cleaning position relative to the first cylinder.
  • the ring-shaped partition plate blocks the water spray hole;
  • the opening of the annular partition communicates with the water spray hole.
  • an inner side wall of the first cylinder is provided with an annular flange protruding outward, and an upper outer surface of the annular partition is provided with a rotary latch groove, and the rotary latch groove and the annular flange are provided. Cooperate.
  • the connecting body is a metal square cylinder, and the connecting body is fixedly connected to the front drill rod by a bolt.
  • the outer surface of the second cylinder is provided with a plurality of cutting teeth, and each cutting tooth has a circular truncated cone shape protruding outward.
  • an inner gasket is provided on the top of the inner wall of the second cylinder, and an outer gasket is provided on the bottom of the second cylinder, and the inner gasket and the outer gasket are both fixed to the first cylinder by a two-liquid mixed hardening glue.
  • the present invention provides a method for using a reverse-rotation water-jet type anti-seizure drill rod system, which includes the following steps:
  • step S2 when the drilling machine stops rotating in the reverse direction, the cutting teeth on the rotating device rotate to loosen or destroy the hard nodules in the borehole.
  • step S2 the method further includes:
  • the set time is generally 5-20S.
  • the present invention provides torque through the rotation of the drilling rig, drives the rear drill rod to rotate and transmits to the rotating device, and then
  • the ring-shaped baffle of the rotating device cooperates with the limit stop of the water-spraying device to make the torque continue to be transmitted forward to the drill rod.
  • the ring-shaped baffle seals the water-spraying hole on the water-spraying device. It is blocked so that clean water flows into the drill bit position through the water delivery hole and the through hole for wet drilling construction.
  • the opening of the annular baffle communicates with the water spray hole, so that the clean water is sprayed from the water spray hole and the drill bit at the same time. Quickly handle stuck stuck to achieve the purpose of cleaning drill cuttings in the drilled hole, thereby avoiding stuck stuck.
  • the present invention utilizes the mutual cooperation of square pins and square holes, and the fixing of bolts, so that the drill pipe can realize forward drilling and reverse rotation, high stability, simple structure and low cost.
  • the present invention cooperates with the water flow and the cutting teeth on the rotating device through the alternation of the forward rotation and the reverse rotation of the device.
  • the device is convenient to operate and has high feasibility, which greatly improves the withdrawal speed and the efficiency of drilling construction.
  • FIG. 1 is a schematic structural diagram of a reverse-rotating water-jet type anti-seize drill pipe system according to the present invention
  • FIG. 2 is a schematic structural diagram of a water spraying device of a reverse-rotating water spraying type anti-stuck drill pipe system according to the present invention
  • FIG. 3 is a schematic structural diagram of a rotary device of a reverse-rotation water-jet type anti-spin drill pipe system according to the present invention
  • FIG. 4 is a schematic view of the working position of a reverse-rotation water-jet type anti-spin drill pipe system according to the present invention
  • FIG. 5 is a schematic view of a cleaning position of a reverse-rotation water-jet type anti-seize drill pipe system according to the present invention.
  • FIG. 6 is a cross-sectional view of the connection between the water spraying device and the rotating device in the normal rotation process of a reverse-rotating water-jetting type anti-seize drill pipe system of the present invention
  • FIG. 7 is a cross-sectional view of the connection between the water jet device and the rotary device in the reverse process of a reverse-rotation water jet type anti-stuck drill rod system according to the present invention
  • FIG. 8 is a cross-sectional view taken along line A-A of FIG. 6;
  • FIG. 9 is a cross-sectional view taken along line C-C of FIG. 7;
  • FIG. 10 is a cross-sectional view taken along line B-B of FIG. 7;
  • FIG. 11 is a cross-sectional view taken along line D-D of FIG. 7;
  • FIG. 12 is a schematic structural diagram of an inner seal of a reverse-rotating water-jetting type anti-seizure drill pipe system of the present invention. [0046] FIG. Schematic diagram of the outer seal of the drill pipe system
  • a reverse-rotation water-jet type anti-seizure drill rod system includes a front drill rod 1, a water spray device 2, a rotation device 3, and a rear drill, which are sequentially arranged.
  • the rod 4 and the rear drill rod 4 are connected to an external drill rig (not shown); the drill rig is used to provide torque to drive the rear drill rod 4 to rotate.
  • Both the front drill rod 1 and the rear drill rod 4 are provided with through-holes 5 in the inner axial direction; the through-holes 5 serve as a transmission channel for clean water.
  • the water spraying device 2 includes a first cylindrical body 21 and a connecting body 22 connected to each other, and a side wall of the first cylindrical body 21 is symmetrical. There are multiple sets of water spray holes 23, and a stopper 24 is provided above the inner side wall of the first cylinder 21, the connecting body 22 is fixedly connected to the front drill rod 1, and the connecting body 22 is also provided with a through water delivery hole 25.
  • the water delivery hole 25 communicates with the through hole 5 and the inside of the first cylinder 21;
  • the rotating device 3 includes a second cylinder 31 and an annular partition 32 connected to each other.
  • the second cylinder 31 is fixedly connected to the rear drill rod 4.
  • the free end of the annular partition 32 projects into the first cylinder 21. It is rotatably connected to the first cylinder 21, and an opening 33 is provided on the annular partition plate 32.
  • the limiting baffle 24 is located in the opening 33.
  • the size of the opening 33 is adapted to the distribution area of the water spray hole 23.
  • the annular partition plate 32 in this embodiment is divided into two circular arc plates by the opening 33, and two circular arc plates. Form a semicircular arc.
  • the limit stop 24 of the present invention is used to restrict the annular partition 32 from rotating to the working position or the cleaning position relative to the first cylinder 21.
  • the annular partition 32 blocks the water spray hole 23
  • the opening 33 communicates with the water spray hole 23.
  • the present invention provides torque through the rotation of the drilling machine, which drives the rear drill rod 4 to rotate and transmit to the rotating device 3. Then, the annular partition 32 of the rotating device 3 and the limit stop 24 of the water spraying device 2 cooperate with each other to make the torque
  • the annular partition 32 blocks the water spray holes 23 on the water spray device 2 so that clean water flows into the water delivery holes 25 and the through holes 5 to
  • the opening 33 of the annular partition 32 communicates with the water spray hole 23, so that the cleaning water is sprayed from the water spray hole 23 to achieve the purpose of cleaning the drill cuttings in the borehole, thereby avoiding The occurrence of stuck drilling.
  • the invention also has the advantages of convenient operation, fast withdrawal speed, and high work efficiency in drilling construction.
  • the inner wall of the first cylinder 21 is provided with an annular flange 26 protruding outward, and an upper outer surface of the annular partition plate 32 is provided with a rotation locking groove 34, the rotation locking groove 34 and an annular protrusion.
  • the edge 26 cooperates.
  • the relative rotation of the annular partition plate 32 and the first cylindrical body 21 can be achieved through the mutual cooperation of the rotating clamping groove 34 and the annular flange 26.
  • connection body 22 is a metal square cylinder, and the connection body 22 is fixedly connected to the front drill rod 1 through a bolt 27.
  • the outer surface of the second cylinder 31 is provided with a plurality of cutting teeth 35, and each cutting tooth 35 has a circular truncated cone shape protruding outward.
  • the cutting teeth 35 can loosen and destroy the hard nodules in the borehole. In order to achieve the purpose of unlocking the card.
  • an inner gasket 36 is provided on the top of the inner wall of the second cylinder 31, and an outer gasket 37 is provided on the bottom of the second cylinder 31, and the inner gasket 36 and The outer gasket 37 is fixed on the second cylinder 31 by two-liquid mixed hardening glue.
  • a method for using a reverse-rotation water-jet type anti-seizure drill pipe system includes the following steps: [0059] S1. Start a drill to rotate the rear drill pipe 4 forward, and drive the ring of the rotary device 3. The partition plate 32 rotates, and the annular partition plate 32 closes the water spray hole 23 of the water spraying device 2 through the limiting action of the limit stop 24, and then drives the front drill rod 1 to rotate;
  • step S2 of the present invention when the drilling machine stops rotating in the reverse direction, the cutting teeth 35 on the rotating device 3 rotate to loosen or destroy the hard nodules in the borehole.
  • step S2 of the present invention the method further includes:
  • S3 When the drilling rig reverses and the card cannot be unlocked, the rotation direction of the drilling rig is changed at an interval setting time, so that the front drill rod 1 and the rear drill rod 4 are turned forward, or the front drill rod 1 and the rear drill rod 4 are reversed and alternated. run.
  • the set time is generally

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Abstract

一种反向旋转喷水式防卡钻钻杆系统及使用方法,该系统包括依次设置的前钻杆(1)、喷水装置(2)、旋转装置(3)和后钻杆(4);前钻杆和后钻杆的内部轴向方向上均设有贯穿孔(5);喷水装置包括相互连接的第一筒体(21)和连接体(22),第一筒体的侧壁上设有多组喷水孔(23),且第一筒体的内侧壁上方设有限位挡块(24),连接体与前钻杆固定连接,且连接体上还设有贯通的输水孔(25),输水孔与贯穿孔和第一筒体的内部相连通;旋转装置包括相互连接的第二筒体(31)和环形隔板(32),第二筒体与后钻杆固定连接,环形隔板的自由端伸入到第一筒体内部,且与第一筒体转动连接,以及环形隔板上还设有开口(33)。该系统避免了卡钻现象的发生,同时还具有操作便捷、退钻速度快和钻孔施工的工作效率高等优点。

Description

说明书 发明名称:一种反向旋转喷水式防卡钻钻杆系统及使用方法 技术领域
[0001] 本发明涉及钻孔施工装备领域, 特别涉及一种反向旋转喷水式防卡钻钻杆系统 及使用方法。
背景技术
[0002] 钻孔施工是指在工程现场通过钻机连接钻具在地质体上加工成孔的操作。 目前 , 钻孔施工被广泛应用于煤矿瓦斯抽放、 注排水、 地质勘探、 钻孔卸压及边坡 锚固等岩土工程中。 而在钻孔施工过程中, 随着钻孔深度的增加, 钻屑堆积在 钻孔中无法及时排出, 造成钻杆无法转动、 卡钻等问题, 严重时还会出现埋钻 、 丢钻的情况。 卡钻情况一旦出现, 不仅会造成钻杆的损坏, 降低钻具的使用 寿命, 而且会直接影响钻孔施工进度, 降低工作效率。
[0003] 为了解决上述问题, 中国专利申请号 201310051709.X公开了一种煤层钻孔防塌 孔随钻钻进下套筒装置及钻孔方法, 它是将套筒与钻杆一同钻进, 之后从套筒 内部退出麻花钻杆, 将套筒留在钻孔中, 在一定程度上避免了因塌孔造成的卡 钻、 退钻困难问题。 然而, 该设计施工工艺复杂, 钻进效率低, 而且将套筒留 在钻孔中, 既浪费了施工材料, 又增加了钻孔施工的成本。
[0004] 5见有技术中还有一种防卡钻钻杆保护结构 (专利号: 201711331508.X) , 以及 中国专利申请号 201510012163.6公开的一种防卡钻钻杆结构, 都是设计运用密 闭腔内的高压气体对钻孔进行清理, 将钻屑带出孔外。 然而, 该装置只适用于 少量钻屑的清理, 无法清除造成卡钻的硬结核, 另外, 当钻孔内部存在裂隙或 钻进距离较长时, 所喷出的气体压力会减弱, 无法将钻屑从钻孔内排出。
[0005] 另外, 上述两个文献公开的钻杆只能单向钻进, 当在软煤层和夹矸煤层中钻孔 施工时, 这种单向钻进的钻杆容易出现碎矸石卡钻头或者煤层塌孔抱卡钻杆现 象发生。
[0006] 为了解决单向钻进钻杆带来的上述问题, 目前有一种可以正反旋转的钻杆系统 , 比如: [0007] 中国专利申请号 2012103213759公开了一种用于煤矿井下钻机的钻杆正反转连 接装置, 它是在钻杆和钻头杆之间设置一个连接装置, 连接装置由第一、 第二 外花键和内花键套及弹簧圆柱销组成。 该专利可以解决某些不严重的卡钻和抱 卡钻杆现象, 但是随着钻杆的高速旋转, 花键的切口处受到强烈的动载荷影响 , 易发生疲劳断裂, 另外, 花键制造工艺复杂, 需要专门设备, 提高了生产成 本。
[0008] 中国专利申请号 201410224253.7公开了一种实现螺纹连接式螺旋钻杆抱钻反转 抽出装置, 它包括至少 2根螺纹连接式螺旋钻杆, 钻杆间的螺纹连接处通过键 槽和卡台固定。 该专利虽然可以实现塌孔抱钻或卡钻时反转抽出, 但是由于它 的钻杆喷水是从钻头喷出, 喷出的水用于湿式钻孔施工, 随着钻孔深度的增加 , 卡钻或抱钻往往会出现在钻头以外的位置, 由于钻身上没有喷水孔, 即便是 反转, 钻屑堆积在钻孔中也无法及时排出, 造成钻杆无法转动、 卡钻等问题, 虽然从钻头喷出的水也可以带出钻屑, 但耗时很长, 特别是深孔卡钻时, 效果 较差, 无法彻底解决卡钻、 埋钻及丢钻等问题。
[0009] 因此现有技术有待进一步的改进和发展。
发明概述
技术问题
问题的解决方案
技术解决方案
[0010] 鉴于上述现有技术的不足, 本发明拟提供一种反向旋转喷水式防卡钻钻杆系统 及使用方法, 用于解决钻孔施工过程中的卡钻、 埋钻及丢钻等问题。
[0011] 本发明的目的通过以下技术方案来实现:
[0012] 一种反向旋转喷水式防卡钻钻杆系统, 其特征在于, 其包括依次设置的前钻杆
、 喷水装置、 旋转装置和后钻杆, 所述后钻杆与外部的钻机相连接;
[0013] 所述前钻杆和后钻杆的内部轴向方向上均设有贯穿孔;
[0014] 所述喷水装置包括相互连接的第一筒体和连接体, 连接体与前钻杆固定连接; 在第一筒体的侧壁上设有对称的多组喷水孔, 且第一筒体的内侧壁上方设有限 位挡块; 在连接体上还设有贯通的输水孔, 该输水孔与贯穿孔和第一筒体的内 部相连通;
[0015] 所述旋转装置包括相互连接的第二筒体和环形隔板, 第二筒体与后钻杆固定连 接; 所述的环形隔板的自由端伸入到第一筒体内部, 与第一筒体转动连接; 所 述环形隔板上还设有开口, 喷水装置的限位挡块位于开口内;
[0016] 其中, 所述限位挡块用于限制环形隔板相对于第一筒体旋转至工作位或清洁位 , 当处于工作位时, 环形隔板封堵住所述喷水孔; 当处于清洁位时, 环形隔板 的开口与喷水孔相连通。
[0017] 进一步地, 所述第一筒体的内侧壁上设有向外突出的环状凸缘, 所述环形隔板 的上部外表面设有旋转卡槽, 旋转卡槽与环状凸缘相配合。
[0018] 进一步地, 所述连接体为金属方形柱体, 连接体通过螺栓与前钻杆固定连接。
[0019] 进一步地, 所述第二筒体的外表面设有多个切割齿, 每个切割齿为向外突出的 圆台形。
[0020] 进一步地, 所述第二筒体的内壁顶部设有内密封垫, 第二筒体的底部设有外密 封垫, 内密封垫和外密封垫均通过两液混合硬化胶固定在第二筒体上。
[0021] 本发明提供的一种反向旋转喷水式防卡钻钻杆系统的使用方法, 其包括以下步 骤:
[0022] S1、 开动钻机使后钻杆正转, 带动旋转装置的环形隔板转动, 通过限位挡块的 限位作用, 使环形隔板将喷水装置的喷水孔封堵住, 接着, 带动前钻杆转动;
[0023] S2、 当钻机正转卡钻时, 将钻机停止后反向旋转, 使环形隔板反向转动, 直至 与限位挡块的另一侧接触, 环形隔板的开口与喷水孔相连通, 清洁水通过喷水 孔和钻头喷出。
[0024] 进一步地, 所述步骤 S2中, 当所述钻机停止后反向旋转时, 所述旋转装置上的 切割齿旋转将钻孔内的硬结核进行松动或破坏。
[0025] 进一步地, 所述步骤 S2之后还包括:
[0026] S3: 当钻机反转无法解卡时, 间隔设定时间变换钻机的旋转方向, 使前钻杆和 后钻杆正转, 或前钻杆和后钻杆反转交替运行。
[0027] 进一步地, 所述设定时间一般为 5-20S。
发明的有益效果 有益效果
[0028] 本发明的有益效果在于:
[0029] 1、 本发明通过钻机转动提供扭矩, 带动后钻杆旋转并传递到旋转装置, 接着
, 旋转装置的环形隔板与喷水装置的限位挡块相互配合, 使扭矩继续向前钻杆 传递, 当钻机正转至工作位时, 环形隔板将喷水装置上的喷水孔封堵住, 使得 清洁水通过输水孔和贯穿孔流入到钻头位置, 进行湿式钻孔施工。 当卡钻时, 操作钻机反转至清洁位时, 环形隔板的开口与喷水孔连通, 使得清洁水从喷水 孔和钻头中同时喷出, 这样即便是深孔卡钻, 也可以及时快速处理卡钻, 达到 清洁钻孔内钻屑的目的, 从而避免了卡钻现象的发生。
[0030] 2、 本发明利用方形柱销与方形孔的相互配合, 加上螺栓的固定, 使得钻杆可 实现正钻和反转, 稳定性高, 且结构简单, 成本低。
[0031] 3、 本发明通过该装置正转和反转的交替, 配合水流以及旋转装置上的切割齿
, 可迅速将堆积钻屑及造成卡钻的硬结核松动、 破坏并在退钻过程中带出钻孔 , 有效防止了钻孔施工过程中的埋钻、 卡钻及丢钻等问题。
[0032] 4、 该装置操作便捷, 可行性高, 极大地提高了退钻速度和钻孔施工的工作效 率。
对附图的简要说明
附图说明
[0033] 为了更清楚地说明本发明实施例或现有技术中的技术方案, 下面将对实施例或 5见有技术描述中所需要使用的附图作简单地介绍, 显而易见地, 下面描述中的 附图仅仅是本发明的一些实施例, 对于本领域普通技术人员来讲, 在不付出创 造性劳动的前提下, 还可以根据这些附图获得其他的附图。
[0034] 图 1是本发明的一种反向旋转喷水式防卡钻钻杆系统的结构示意图;
[0035] 图 2是本发明的一种反向旋转喷水式防卡钻钻杆系统的喷水装置的结构示意图
[0036] 图 3是本发明的一种反向旋转喷水式防卡钻钻杆系统的旋转装置的结构示意图
[0037] 图 4是本发明的一种反向旋转喷水式防卡钻钻杆系统的工作位状态示意图; [0038] 图 5是本发明的一种反向旋转喷水式防卡钻钻杆系统的清洁位状态示意图。
[0039] 图 6是本发明的一种反向旋转喷水式防卡钻钻杆系统的正转过程喷水装置与旋 转装置连接剖面图;
[0040] 图 7是本发明的一种反向旋转喷水式防卡钻钻杆系统的反转过程喷水装置与旋 转装置连接剖面图;
[0041] 图 8是图 6沿 A-A线的剖视图;
[0042] 图 9是图 7沿 C-C线的剖视图;
[0043] 图 10是图 7沿 B-B线的剖视图;
[0044] 图 11是图 7沿 D-D线的剖视图;
[0045] 图 12是本发明的一种反向旋转喷水式防卡钻钻杆系统的内密封垫的结构示意图 [0046] 图 13是本发明的一种反向旋转喷水式防卡钻钻杆系统的外密封垫的结构示意图
[0047] 图中: 1-前钻杆, 2 -喷水装置, 21 -第一筒体, 22连接体, 23 -喷水孔, 24 -限位 挡块, 25 -输水孔 ,26 -旋转凸缘, 27 -螺栓, 3 -旋转装置, 31 -第二筒体, 32 -环形隔 板, 33 -开口, 34 -旋转卡槽, 35 -切割齿, 36 -内密封垫, 37 -外密封垫, 4 -后钻杆
, 5 -贯穿孔。
发明实施例
本发明的实施方式
[0048] 下面结合附图对本发明的优选实施例进行详细阐述, 以使本发明的优点和特征 能更易于被本领域技术人员理解, 从而对本发明的保护范围做出更为清楚明确 的界定。
[0049] 参阅图 1-11所示, 本发明的一种反向旋转喷水式防卡钻钻杆系统, 其包括依次 设置的前钻杆 1、 喷水装置 2、 旋转装置 3和后钻杆 4, 后钻杆 4与外部的钻机 (图 中未示出) 相连接; 钻机用于提供扭矩带动后钻杆 4转动。
[0050] 前钻杆 1和后钻杆 4的内部轴向方向上均设有贯穿孔 5 ; 贯穿孔 5作为清洁水的输 送通道。
[0051] 喷水装置 2包括相互连接的第一筒体 21和连接体 22, 第一筒体 21的侧壁上对称 设有多组喷水孔 23 , 且第一筒体 21的内侧壁上方设有限位挡块 24, 连接体 22与 前钻杆 1固定连接, 且连接体 22上还设有贯通的输水孔 25 , 输水孔 25与贯穿孔 5 和第一筒体 21的内部相连通;
[0052] 旋转装置 3包括相互连接的第二筒体 31和环形隔板 32, 第二筒体 31与后钻杆 4固 定连接, 环形隔板 32的自由端伸入到第一筒体 21内部, 且与第一筒体 21转动连 接, 以及环形隔板 32上还设有开口 33 , 限位挡板 24位于开口 33内; 在本实施例 中, 为了保证清洁水能经开口 33均匀流入到喷水孔 23中, 开口 33的大小与喷水 孔 23的分布面积相适配, 优选地, 本实施例中的环形隔板 32被开口 33分割呈两 块圆弧板, 两块圆弧板组成一个半圆弧。 此时, 限位挡块 24设置两块, 喷水孔 在第一筒体 21的分布面积也为半个圆筒, 两块圆弧板旋转角度最大为 45度。 ( 对) 本发明的限位挡块 24用于限制环形隔板 32相对于第一筒体 21旋转至工作位 或清洁位, 当处于工作位时, 环形隔板 32封堵住喷水孔 23 ; 当处于清洁位时, 开口 33与喷水孔 23相连通。
[0053] 本发明通过钻机转动提供扭矩, 带动后钻杆 4旋转并传递到旋转装置 3, 接着, 旋转装置 3的环形隔板 32与喷水装置 2的限位挡块 24相互配合, 使扭矩继续向前 钻杆 1传递, 当钻机正转至工作位时, 环形隔板 32将喷水装置 2上的喷水孔 23封 堵住, 使得清洁水通过输水孔 25和贯穿孔 5流入到钻头位置, 当钻机反转至清洁 位时, 环形隔板 32的开口 33与喷水孔 23连通, 使得清洁水从喷水孔 23中喷出, 达到清洁钻孔内钻屑的目的, 从而避免了卡钻现象的发生。 同时, 本发明还具 有操作便捷、 退钻速度快和钻孔施工的工作效率高等优点。
[0054] 具体地, 第一筒体 21的内侧壁上设有向外突出的环状凸缘 26, 环形隔板 32的上 部外表面设有旋转卡槽 34, 旋转卡槽 34与环状凸缘 26相配合。 本发明中, 通过 旋转卡槽 34与环状凸缘 26的相互配合, 即可实现环形隔板 32与第一筒体 21的相 对转动。
[0055] 较佳地, 为了提高连接体 22与前钻杆 1连接的牢固性, 连接体 22为金属方形柱 体, 连接体 22通过螺栓 27与前钻杆 1固定连接。
[0056] 本发明中, 第二筒体 31的外表面设有多个切割齿 35, 每个切割齿 35为向外突出 的圆台形。 当第二筒体 31旋转时, 切割齿 35可以将钻孔内的硬结核松动、 破坏 以达到解卡的目的。
[0057] 参阅图 12-13所示, 为了提高密封性, 第二筒体 31的内壁顶部设有内密封垫 36 , 第二筒体 31的底部设有外密封垫 37, 内密封垫 36和外密封垫 37均通过两液混 合硬化胶固定在第二筒体 31上。
[0058] 本发明的一种反向旋转喷水式防卡钻钻杆系统的使用方法, 其包括以下步骤: [0059] S1、 开动钻机使后钻杆 4正转, 带动旋转装置 3的环形隔板 32转动, 通过限位挡 块 24的限位作用, 使环形隔板 32将喷水装置 2的喷水孔 23封堵住, 接着, 带动前 钻杆 1转动;
[0060] S2、 当钻机正转卡钻时, 将钻机停止后反向旋转, 使环形隔板 32反向转动, 直 至与限位挡块 24的另一侧接触, 环形隔板 32的开口 33与喷水孔 23相连通, 清洁 水通过喷水孔 23喷出, 从而实现钻孔内钻屑的清理。
[0061] 本发明的步骤 S2中, 当钻机停止后反向旋转时, 旋转装置 3上的切割齿 35旋转 将钻孔内的硬结核进行松动或破坏。
[0062] 本发明的步骤 S2之后还包括:
[0063] S3: 当钻机反转无法解卡时, 间隔设定时间变换钻机的旋转方向, 使前钻杆 1 和后钻杆 4正转, 或前钻杆 1和后钻杆 4反转交替运行。 优选地, 设定时间一般为
5-20S。
[0064] 以上, 仅为本发明的具体实施方式, 但本发明的保护范围并不局限于此, 任何 不经过创造性劳动想到的变化或替换, 都应涵盖在本发明的保护范围之内。 因 此, 本发明的保护范围应该以权利要求书所限定的保护范围。

Claims

权利要求书
[权利要求 1] 一种反向旋转喷水式防卡钻钻杆系统, 其特征在于, 它包括依次设置 的前钻杆、 喷水装置、 旋转装置和后钻杆, 所述后钻杆与外部的钻机 相连接;
所述前钻杆和后钻杆的内部轴向方向上均设有贯穿孔;
所述喷水装置包括相互连接的第一筒体和连接体, 连接体与前钻杆固 定连接; 在第一筒体的侧壁上设有对称的多组喷水孔, 且第一筒体的 内侧壁上方设有限位挡块; 在连接体上还设有贯通的输水孔, 该输水 孔与贯穿孔和第一筒体的内部相连通;
所述旋转装置包括相互连接的第二筒体和环形隔板, 第二筒体与后钻 杆固定连接; 所述的环形隔板的自由端伸入到第一筒体内部, 与第一 筒体转动连接; 所述环形隔板上还设有开口, 喷水装置的限位挡块位 于开口内;
其中, 所述限位挡块用于限制环形隔板相对于第一筒体旋转至工作位 或清洁位, 当处于工作位时, 环形隔板封堵住所述喷水孔; 当处于清 洁位时, 环形隔板的开口与喷水孔相连通。
[权利要求 2] 如权利要求 i所述的反向旋转喷水式防卡钻钻杆系统, 其特征在于, 所述第一筒体的内侧壁上设有向外突出的环状凸缘, 所述环形隔板的 上部外表面设有旋转卡槽, 旋转卡槽与环状凸缘相配合。
[权利要求 3] 如权利要求 2所述的反向旋转喷水式防卡钻钻杆系统, 其特征在于, 所述连接体为金属方形柱体, 连接体通过螺栓与前钻杆固定连接。
[权利要求 4] 如权利要求 1所述的反向旋转喷水式防卡钻钻杆系统, 其特征在于, 所述第二筒体的外表面设有多个切割齿, 每个切割齿为向外突出的圆 台形。
[权利要求 5] 如权利要求 1所述的反向旋转喷水式防卡钻钻杆系统, 其特征在于, 所述第二筒体的内壁顶部设有内密封垫, 第二筒体的底部设有外密封 垫, 内密封垫和外密封垫均通过两液混合硬化胶固定在第二筒体上。
[权利要求 6] 一种根据权利要求 1-5任一项所述的基于反向旋转的防卡钻钻杆系统 的使用方法, 其特征在于, 包括以下步骤:
51、 开动钻机使后钻杆正转, 带动旋转装置的环形隔板转动, 通过限 位挡块的限位作用, 使环形隔板将喷水装置的喷水孔封堵住, 接着, 带动前钻杆转动;
52、 当钻机正转卡钻时, 将钻机停止后反向旋转, 使环形隔板反向转 动, 直至与限位挡块的另一侧接触, 环形隔板的开口与喷水孔相连通 , 清洁水通过喷水孔和钻头喷出。
[权利要求 7] 如权利要求 6所述的基于反向旋转的防卡钻钻杆系统的使用方法, 其 特征在于, 所述步骤 S2中, 当所述钻机停止后反向旋转时, 所述旋转 装置上的切割齿旋转将钻孔内的硬结核进行松动或破坏。
[权利要求 8] 如权利要求 6所述的基于反向旋转的防卡钻钻杆系统的使用方法, 其 特征在于, 所述步骤 S2之后还包括:
S3: 当钻机反转无法解卡时, 间隔设定时间变换钻机的旋转方向, 使 前钻杆和后钻杆正转, 或前钻杆和后钻杆反转交替运行。
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