WO2012146053A1 - 连续管导入装置 - Google Patents

连续管导入装置 Download PDF

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Publication number
WO2012146053A1
WO2012146053A1 PCT/CN2012/000510 CN2012000510W WO2012146053A1 WO 2012146053 A1 WO2012146053 A1 WO 2012146053A1 CN 2012000510 W CN2012000510 W CN 2012000510W WO 2012146053 A1 WO2012146053 A1 WO 2012146053A1
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WO
WIPO (PCT)
Prior art keywords
sleeve
spherical
tightening nut
cone
head
Prior art date
Application number
PCT/CN2012/000510
Other languages
English (en)
French (fr)
Inventor
张三坡
刘铁丽
朱再思
吴大飞
罗刚
Original Assignee
中国石油天然气集团公司
中国石油集团钻井工程技术研究院
中国石油集团钻井工程技术研究院江汉机械研究所
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
Priority claimed from CN 201110108451 external-priority patent/CN102182409B/zh
Priority claimed from CN201120129921XU external-priority patent/CN202073514U/zh
Application filed by 中国石油天然气集团公司, 中国石油集团钻井工程技术研究院, 中国石油集团钻井工程技术研究院江汉机械研究所 filed Critical 中国石油天然气集团公司
Priority to EA201301172A priority Critical patent/EA023201B1/ru
Priority to US14/111,461 priority patent/US9316069B2/en
Publication of WO2012146053A1 publication Critical patent/WO2012146053A1/zh

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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
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/24—Guiding or centralising devices for drilling rods or pipes
    • 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 invention relates to the technical field of oil field continuous pipe operation, in particular to a continuous pipe introduction special tool capable of extracting a continuous pipe from a winch drum and introducing it into an injection head clamping block, which is a continuous pipe introduction device.
  • the continuous pipe working machine is a special equipment for petroleum oil and gas well operations, which is mainly composed of a winch drum (disc continuous pipe), an injection head (clamping a continuous pipe through a clamping block and injecting or withdrawing oil and gas wells) and power. Control system composition.
  • a winch drum disc continuous pipe
  • an injection head clampping a continuous pipe through a clamping block and injecting or withdrawing oil and gas wells
  • power. Control system composition During the installation of the well site, the continuous tube on the winch drum must be withdrawn beforehand and inserted into the injection head clamping block before subsequent installation work. However, before the continuous pipe is taken out from the winch drum to the injection head guide, the continuous pipe must be straightened by an external force, and the gooseneck guide is inserted into the injection head clamping block and then along the gooseneck guide arc surface. After the continuous tube is bent, it is inserted into the injection head clamping block.
  • a serpentine rope type continuous pipe introduction device which uses a wire rope with a diameter equal to the outer diameter of the continuous pipe (referred to as a snake in foreign countries), one end is connected to the continuous pipe on the drum through a special joint, and the other end is inserted into the injection head. Clamping block. Then, the injection head motor is started, the wire rope is introduced into the injection head, and finally the continuous pipe is introduced into the injection head, and the wire rope joint is sawed from the continuous pipe, and the serpentine rope type introduction device is removed to complete the introduction of the continuous pipe.
  • This wire rope introduction tool joint is firmly connected, the strength can greatly exceed the requirements of use, and the rigidity is also suitable, so it is safe to use.
  • the disadvantage is that after the continuous pipe is introduced into the injection head, the joint joint must be cut together with the continuous pipe head to remove the serpentine rope type introduction device, which wastes expensive continuous pipe and is inconvenient to use;
  • the continuous pipe diameter is larger than 2 3 / 8 "), and the serpentine rope type introduction device will have poor flexibility when operating, which directly affects the efficiency of the pipe; in the normal working well field, the pipe head is generally required to be injected.
  • the distance between the winch drum is more than 10 meters, which will cause the weight of the introduction device with solid steel as the main material to increase sharply. It becomes very cumbersome, increases the labor intensity of workers, and is inconvenient to operate.
  • the second is Canada.
  • XTREME's winch-type continuous pipe introduction device works by using a thin steel wire rope with sufficient strength, one end through the clamping block and fixed to the continuous pipe by the joint, and the other end fixed to a winch through the blowout prevention box. Rotate the winch with an external power source, draw the continuous tube, and finally export the continuous tube to the blowout prevention box and unload the introduction tool.
  • the advantages of the tool are: good flexibility and low labor intensity; the disadvantage is that an external power source is required, which is inconvenient to use on site. Summary of the invention
  • the object of the present invention is to provide a continuous pipe introduction device, which utilizes a power source provided by a continuous tube working machine to inject a head motor, which can conveniently and quickly withdraw the continuous pipe from the winch drum and introduce the injection head clamping block through the guide.
  • a continuous pipe introduction device which utilizes a power source provided by a continuous tube working machine to inject a head motor, which can conveniently and quickly withdraw the continuous pipe from the winch drum and introduce the injection head clamping block through the guide.
  • the technical solution adopted by the invention is: a continuous pipe introduction device, which is mainly composed of a slip joint, a lock sleeve, a floating sleeve, a seeker and a traction steel rope, and is characterized in that:
  • the slip joint is mainly composed of three parts: an expansion plug, a slip sleeve and a tightening nut.
  • the expansion plug is composed of a cone and a threaded body. The cone and the thread body are connected together, the center line of the cone and the thread body are on the same straight line, and the large diameter end of the cone at one end of the expansion plug is at the outer end, that is, the cone The small diameter end is connected to one end of the expansion plug threaded body, and the threaded body has a cylindrical outer wall with a thread.
  • the slip cover is cylindrical, the outer wall of the slip cover has annular teeth, the inner wall of the slip cover is a conical surface, and the taper of the conical surface of the slip cover is the same as the taper of the cone of the expansion plug.
  • the cone of the expansion plug is inside the slip sleeve. There is an axial gap in the wall of the slip. The cone of the expansion plug can open the slip sleeve even if the diameter of the outer wall of the slip sleeve expands outward.
  • a tightening nut is connected to the threaded body of the expansion plug, The upper end surface of the tightening nut is in contact with the lower end surface of the slip sleeve.
  • the outer wall of the tightening nut is cylindrical, and the upper end of the tightening nut has an internal thread and can be connected with the threaded body of the expansion plug 1.
  • the lower end of the tightening nut is a convex spherical body.
  • At the lower end of the tightening nut there is a rectangular groove along the axial direction, and the loop of the end of the traction steel cord can be inserted into the rectangular groove.
  • a threaded pin is fixed in the screw hole at the lower end of the tightening nut. The end of the threaded pin passes through the loop of the traction steel cord, and one end of the traction rope is fixed in a rectangular slot at the lower end of the tightening nut.
  • the internal thread of the tightening nut and the external thread of the expansion plug thread are trapezoidal threads.
  • the threaded pin has a polished rod at one end and a connecting thread in the middle, and an inner hexagonal wrench groove at the other end.
  • the locking sleeve is mainly composed of a spherical support body, an inner cone sleeve, an outer cone sleeve, a pre-tightening nut and a spherical head.
  • the spherical support body has a cylindrical shape, and the upper end surface of the spherical support body is a concave spherical surface, and has a center at the center of the concave spherical surface.
  • the hole, the traction steel rope can pass through the central hole of the concave spherical surface.
  • the center line spherical support of the cylindrical space is on the same line on the center line.
  • the outer sleeve of the inner cone sleeve is cylindrical, the inner cone sleeve has a conical hole, and the inner cone sleeve has an outer cone sleeve inside the conical hole;
  • the outer cone sleeve is composed of two identical blocks, the two blocks having a conical shape with respect to the rear outer wall, and the center hole wall has annular teeth.
  • the annular tooth of the outer cone ferrule can clamp the traction steel rope.
  • a spherical head is fixed on the thread of the spherical support body; the spherical head has a cylindrical shape, the outer diameter of the spherical head is the same as the outer diameter of the spherical support body, the upper end surface of the spherical head has a convex externally threaded cylinder, and the external thread can be combined with the spherical support body. Threaded connection.
  • the spherical head has a convex spherical body at the lower end; the spherical head has a central hole, and the traction steel The rope can pass through the central hole of the spherical surface of the spherical support.
  • the traction steel rope passes through the center hole of the spherical support body, the center hole of the outer cone ferrule, the center hole of the pre-tightening nut and the center hole of the spherical head; the convex spherical body of the lower end of the tightening nut is in the concave spherical surface of the upper end of the spherical support body.
  • the floating sleeve is a spherical support body and a spherical head threadedly connected, and the traction steel rope passes through the central hole of the spherical support body of the floating sleeve and the center hole of the spherical head of the floating sleeve.
  • a locking sleeve and one or two floating sleeves are a group of joint locking bodies, which are connected by a traction steel cord, the convex spherical surface is embedded in the concave spherical surface, and the convex spherical surface and the concave spherical surface are freely slid to prevent the joint from being stuck during work. .
  • the number of the joint locking bodies is between 4 and 15.
  • a tapered lead body is connected to the lower end of a floating sleeve by a traction wire.
  • the seeker is composed of a spherical support body, an inner cone sleeve, an outer cone sleeve, a pre-tightening nut and a tapered lead body.
  • the structure of the seeker is basically the same as the locking sleeve structure, and the difference is the tapered lead.
  • the body has a conical shape, the outer diameter of the upper end of the tapered puller is the same as the outer diameter of the spherical support body, the lower end of the tapered puller has a convex spherical body; the tapered puller has a central hole, and the traction steel wire passes through the center of the tapered pull-up hole.
  • the tapered puller guides the traction body into the clamping block smoothly.
  • the floating sleeve and the locking sleeve, the seeker and the traction wire 11 are assembled to form a traction body, and 1 to 2 floating sleeves are placed between each of the two locking sleeves.
  • the traction steel rope 11 is sequentially passed through the spherical support body 5, the outer cone ferrule 7, the pre-tightening nut 8, and the spherical head 9. After adjusting the position, the outer cone ferrule 7 is clamped to the traction steel rope.
  • the traction body formed by assembling the locking sleeve, the floating sleeve, the seeker and the traction steel cord is connected to the slip joint which has been attached to the continuous pipe by the threaded pin 4.
  • the seeker end is inserted into the blowout prevention box through the injection head gooseneck guide and the clamping block, and finally passes out from the bottom of the blowout prevention box, starts the injection head chain clamping liquid cylinder, clamps the traction body of the introduction device, starts the injection
  • the head motor drives the chain
  • the chain drives the clamping block
  • the clamping block drives the introduction device
  • the introduction device drives the continuous tube to move in the direction of the downward tube.
  • the continuous tube is bent by the gooseneck guide after being pulled by the introduction device.
  • the clamping block is moved downwards under the clamping of the clamping block and finally passes out of the blowout prevention box. Remove the threaded pin first. 4 Untie the traction body, then loosen the tightening nut 3. Gently tap to exit the expansion plug 1. Untie the slip joint and the tube is working.
  • Figure 1 is a schematic cross-sectional view showing the overall structure of a continuous pipe introduction device of the present invention
  • FIG. 2 is a schematic cross-sectional view showing the structure of the slip joint of the present invention.
  • FIG 3 is a schematic cross-sectional view showing the structure of the locking sleeve of the present invention.
  • FIG. 4 is a schematic cross-sectional view showing the structure of the floating sleeve of the present invention.
  • Figure 5 is a schematic cross-sectional view showing the structure of the seeker of the present invention.
  • Figure 6 is a schematic side view of the slip joint head.
  • Figure 7 is a schematic side view of the locking sleeve shaft.
  • Example 1 Taking a continuous tube introduction device of 2V' specification as an example, the present invention is See Figure 1 for a detailed description.
  • the continuous pipe introduction device of the present invention mainly comprises a slip joint, a lock sleeve, a floating sleeve, a seeker and a traction steel cord 10.
  • the slip joint is mainly composed of three parts: the expansion plug 1, the slip sleeve 2, and the tightening nut 3.
  • the expansion plug 1 is composed of a cone body and a thread body. The cone body and the thread body are connected together. The center line of the cone body and the thread body are on the same straight line, and the large diameter end of the cone body at one end of the expansion plug 1 is at the outer end, that is, a cone.
  • the small diameter end of the body is connected to one end of the threaded body of the expansion plug 1 , the threaded body is cylindrical, and the outer wall has a trapezoidal external thread.
  • the ferrule 2 is a cylindrical shape, the outer wall of the ferrule 2 has a ring-shaped tooth, the outer diameter of the annular tooth is smaller than the minimum inner diameter of the 27 '.
  • the inner wall of the slip sleeve 2 is a conical surface, and the taper of the chevron sleeve 2 is the same as the taper of the expansion plug 1 cone.
  • the cone of the expansion plug 1 is inside the slip sleeve 2.
  • a tightening nut 3 is attached to the threaded body of the expansion plug 1, and the upper end surface of the tightening nut 3 is in contact with the lower end surface of the slip sleeve 2.
  • the outer wall of the tightening nut 3 has a cylindrical outer diameter of 60 mm and a total length of 85 mm.
  • the upper end of the tightening nut 3 has a trapezoidal internal thread T28 X 2 .
  • the lower end of the tightening nut 3 is a convex spherical body, and at the lower end of the tightening nut 3, there is a rectangular groove in the axial direction, and the square groove size is 40 mm X 12 mm.
  • a threaded pin 4 is fixed in the screw hole at the lower end of the tightening nut 3.
  • the threaded pin 4 is a cylinder having a diameter of 12 mm at one end, the middle of the threaded pin 4 is a connecting thread M14, and the other end has an inner hexagonal wrench groove.
  • the threaded pin 4 passes through the ferrule of the traction rope 10, and the inner diameter of the ferrule of the traction rope 10 is 12 mm.
  • One end of the traction wire 10 is fixed in a rectangular groove at the lower end of the tightening nut 3.
  • the locking sleeve is mainly composed of a spherical support body 5, an inner cone sleeve 6, an outer cone sleeve 7, a pre-tightening nut 8 and a spherical head 9.
  • the spherical support body 5 has a cylindrical shape, and the outer diameter of the spherical support body 5 is 60 mm. Length 85 mm.
  • the upper end surface of the spherical support body 5 is a concave spherical surface, and has a straight center at the concave spherical surface. A center hole with a diameter of 10 mm.
  • the center line of the cylindrical space is on the same line as the center line of the spherical support 5.
  • the outer sleeve of the inner sleeve 6 has a cylindrical shape, and the inner sleeve 6 has a conical hole with a taper of 1:8 and a conical shape inside the inner sleeve 6.
  • the outer cone sleeve 7 is formed by the outer cone sleeve 7; the outer cone sleeve 7 is composed of two identical blocks, the two blocks are conical with respect to the rear outer wall, the taper is 1:8, and the central hole wall has annular teeth. .
  • the spherical head 9 is fixed on the internal thread of the spherical support body 5; the spherical head 9 has a cylindrical shape, and the spherical head 9 has an outer diameter of 60 mm and a length of 45 mm, which is the same as the outer diameter of the spherical support body 5, and the upper end surface of the spherical head 9 has a convex shape.
  • the M40 externally threaded cylinder can be connected to the M40 internal thread of the spherical support 5.
  • the lower end of the spherical head 9 has a convex spherical body; the spherical head 9 has a central hole.
  • the traction steel rope 10 passes through the center hole of the spherical support body 5, the center hole of the outer cone ferrule, the center hole of the pre-tightening nut 8, and the center hole of the spherical head 9; the convex spherical body of the lower end of the tightening nut 3 is at the upper end of the spherical support body 5
  • the concave sphere is inside.
  • the floating sleeve is a spherical support 5 and a spherical head 9 which is screwed so that the traction rope 10 passes through the center hole of the spherical support body 5 of the floating sleeve and the spherical head 9 of the floating sleeve.
  • a locking sleeve and a floating sleeve are a group of joint locking bodies which are joined together by a traction steel cord 10, and the convex spherical surface is embedded in the concave spherical surface.
  • the number of joint locking bodies is eight.
  • a tapered lead body 1 1 is connected to the lower end of a floating sleeve by a traction wire 10.
  • the seeker is composed of a spherical support body 5, an inner cone sleeve 6, an outer cone sleeve 7, a pre-tightening nut 8 and a tapered lead body 1 1.
  • the structure of the seeker is basically the same as that of the locking sleeve, and the difference is
  • the tapered lead body 1 1 has a conical shape, the outer diameter of the upper end of the tapered lead body 1 1 is the same as the outer diameter of the spherical support body 5, and the lower end of the tapered lead body 1 1 has a convex spherical body; the tapered puller 1 1 has a central hole through which the traction wire 10 passes through the central hole of the tapered lead body 11.
  • the continuous tube working machine injects the head motor power to generate a downward injection force through the chain, transmits the friction force generated by the clamping block to the locking sleeve on the traction body, and then passes the force through the outer cone inside the locking sleeve.
  • the ferrule 7 is transmitted to the traction steel rope 1 on the traction body, and the traction steel rope 1 1 transmits the force to the threaded pin 4 and the slip joint.
  • the slip joint is engaged with the inner wall of the continuous tube by the slip sleeve 2
  • the traction force is transmitted to the continuous pipe, thereby realizing the traction function of the continuous pipe.
  • the continuous pipe introduction device of the present invention can quickly and safely withdraw the continuous pipe from the winch drum and introduce it into the injection head holding block through the gooseneck guide. No additional power source is required, and the power source is only supplied by the continuous tube machine itself.
  • the spherical joint design is used between the joints and the joints so that the joints are not stuck when the continuous pipe introduction device is operated.
  • the production of the traction body adopts a flexible steel wire rope as the main body of the traction (to improve the flexibility of the introduction device as a whole), and the low-density, low-hardness and high-strength non-ferrous metal alloy is used as the main body of the guiding body (partially improving the rigidity of the introduction device), and is connected to each other through the outer cone ferrule Together.

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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)
  • Earth Drilling (AREA)
  • Flexible Shafts (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Description

连续管导入装置 技术领域
本发明涉及油田连续管作业技术领域， 特别涉及一种能将连续管从 绞车滚筒抽出并导入注入头夹持块的连续管导入专用工具， 是一种连续 管导入装置。 背景技术
目前， 连续管作业机是用于石油油气井作业的专用设备， 其主要由 绞车滚筒 （盘放连续管） 、 注入头 （通过夹持块夹住连续管并注入或起 出油气井） 和动力控制系统构成。 该装置在井场安装过程中， 必须事先 将绞车滚筒上的连续管抽出并插入注入头夹持块， 然后再进行后续的安 装作业。 但连续管在从绞车滚筒抽出到注入头导向器前， 必须先用外力 将连续管拉直， 通过鹅颈形导向器进入注入头夹持块前再顺着鹅颈形导 向器圆弧面将连续管折弯后插入注入头夹持块内。
目前， 人们的普遍做法有两种。 其一是蛇形绳索式连续管导入装置， 用一根与连续管外径等径的钢丝绳（国外称其为 snake) ， 一端通过一个 特殊接头与滚筒上的连续管相连， 另一头插入注入头夹持块。 然后启动 注入头马达， 将钢丝绳导入注入头， 最后将连续管导入注入头， 连同钢 丝绳接头从连续管上锯下， 拆掉蛇形绳索式导入装置， 完成连续管的导 入。 这种钢丝绳导入工具接头连接牢固， 强度可大大超出使用要求， 刚 性也合适， 故使用很安全。 其不足之处是连续管导入注入头后必须将连 接接头连带连续管管头一起切掉方能取下蛇形绳索式导入装置， 既浪费 价格昂贵的连续管， 使用又不方便； 此外对于大直径的连续管 （直径大 于 23/8 " ) ， 再用此种蛇形绳索式导入装置其操作时柔性就会很差， 直接 影响导管效率； 在通常作业井场， 一般要求导管时注入头离绞车滚筒的 距离在 10米以上，这会造成以实心钢材为主材的导入装置重量急剧增加， 变得很笨重， 增加了工人的劳动强度， 不方便操作。 其二是加拿大
XTREME公司的绞车式连续管导入装置， 工作原理是用一根有足够强度 的细钢丝绳， 一头穿过夹持块并用接头固定在连续管上， 另一头穿过防 喷盒固定在一个绞车上， 用外加动力源转动绞车， 将连续管抽出， 最终 将连续管导出防喷盒， 解下导入工具。 对于绞车式连续管导入装置， 工 具的优点是： 柔性好， 工人劳动强度低； 缺点是需外加动力源， 现场使 用不方便。 发明内容
本发明的目的是： 提供一种连续管导入装置， 利用连续管作业机注 入头马达提供的动力源， 能方便快捷安全地将连续管从绞车滚筒上抽出 并通过导向器导入注入头夹持块。 在现有两种连续管导入工具的基础上 经过创造性的结构改进， 吸收两者的优点， 在保证其足够的柔性和刚度 前提下， 增强可操作性、 便捷性， 降低其整体重量， 并在将连续管导入 注入头后， 在不破坏连续管的情况下方便快捷的取下连续管导入装置和 连接接头。
本发明采用的技术方案是： 连续管导入装置， 主要由卡瓦连接头、 锁紧套、 浮动套、 导引头和牵引钢绳组成， 其特征在于：
卡瓦连接头主要由膨胀塞、 卡瓦套、 上紧螺母三个零件构成。 膨胀 塞由圆锥体和螺纹体组成， 圆锥体和螺纹体连接在一起， 圆锥体和螺纹 体的中心线在同一条直线上， 膨胀塞一端的圆锥体的大直径端在外端， 即圆锥体的小直径端与膨胀塞螺纹体一端连接， 螺纹体为圆柱体形外壁 上有螺纹。 卡瓦套为圆筒形， 卡瓦套外壁有环形齿， 卡瓦套内壁为圆锥 面， 卡瓦套圆锥面的锥度与膨胀塞圆锥体的锥度相同。 膨胀塞的圆锥体 在卡瓦套内。 卡瓦套壁上有轴向缝隙。 膨胀塞的圆锥体能将卡瓦套撑开， 即使卡瓦套外壁直径向外扩大。 在膨胀塞的螺纹体上连接有上紧螺母， 上紧螺母的上端面与卡瓦套的下端面接触。 上紧螺母外壁为圆柱体形， 上紧螺母一端有内螺纹， 能与膨胀塞 1 的螺纹体连接。 上紧螺母的下端 为凸球面体， 在上紧螺母的下端有一个沿轴向的长方形槽， 牵引钢绳端 部的绳套圈能插入长方形槽中。 在上紧螺母下端有螺孔， 螺孔与上紧螺 母下端的长方形槽垂直。 在上紧螺母下端螺孔内固定有一个的螺纹销。 螺纹销的端部穿过牵引钢绳的绳套圈， 将牵引钢绳的一端固定在上紧螺 母下端的长方形槽中。
为了旋转上紧螺母， 在卡瓦套下端的外壁上有六个扳手槽； 在上紧 螺母的上端外壁上有六个扳手槽。 所述的上紧螺母的内螺纹和膨胀塞螺 纹体的外螺纹为梯形螺纹。 螺纹销是一端为光杆， 中间有连接螺纹， 另 一端有内六方扳手槽。
锁紧套主要由球面支撑体、 内锥套、 外锥卡套、 预紧螺母和球形头 组成， 球面支撑体为圆柱体形， 球面支撑体的上端面为凹球面， 在凹球 面的中心有中心孔， 牵引钢绳能穿过凹球面的中心孔。 在球面支撑体内 并在中心孔的下部有圆柱形空间， 圆柱形空间的中心线球面支撑体在中 心线在同一条直线上。 在圆柱形空间内有内锥套和外锥卡套， 内锥套外 壁为圆柱体形， 内锥套内有圆锥形孔， 在内锥套内圆锥形孔内有外锥卡 套； 所述的外锥卡套由两个相同的卡块组成， 两个卡块相对后外壁为圆 锥体形， 中心孔壁上有环形齿。 当牵引钢绳穿过外锥卡套中心孔， 外锥 卡套在内锥套内向上滑动时， 外锥卡套的环形齿能卡紧牵引钢绳。 在球 面支撑体的下端有内螺纹。 在球面支撑体内螺纹上有预紧螺母， 预紧螺 母外壁有螺紋， 预紧螺母有中心孔， 预紧螺母的中心孔能通过牵引钢绳。 旋紧预紧螺母能推动外锥卡套向上滑动并卡紧牵引钢绳。 在球面支撑体 内螺纹上固定有球形头； 球形头为圆柱体形， 球形头外径与球面支撑体 外径相同， 球形头上端面有凸起的外螺纹圆柱体， 外螺纹能与球面支撑 体的内螺紋连接。 球形头的下端有凸球面体； 球形头有中心孔， 牵引钢 绳能穿过球面支撑体凸球面的中心孔。牵引钢绳穿过球面支撑体中心孔、 外锥卡套中心孔、 预紧螺母中心孔和球形头的中心孔； 上紧螺母下端的 凸球面体在球面支撑体上端的凹球面内。
浮动套是球面支撑体和球形头螺纹连接成， 牵引钢绳穿过浮动套的 球面支撑体中心孔和浮动套的球形头的中心孔。
一个锁紧套和一个或两个浮动套为一组联合锁紧体， 由牵引钢绳连 接在一起， 凸球面嵌入凹球面内， 凸球面与凹球面之间自由滑动， 防止 工作时关节卡死。 所述的联合锁紧体的数量在 4〜15之间。 在最下端的 一个浮动套的下端通过牵引钢绳连接一个锥形引体。
导引头是由球面支撑体、 内锥套、 外锥卡套、 预紧螺母和锥形引体 组成， 导引头的结构与锁紧套结构基本相同， 不同点是所述的锥形引体 为圆锥体形， 锥形引体的上端外径与球面支撑体外径相同， 锥形引体的 下端有凸球面体； 锥形引体有中心孔， 牵引钢绳穿过锥形引体的中心孔。 锥形引体能引导牵引体顺利进入夹持块。
简述连续管导入装置的使用过程。参阅图 1。将膨胀塞 1放入卡瓦套 2中， 使其内外方相配， 旋转上紧螺母 3， 卡瓦套 2的上部外径有环形齿 部分不张开， 组装好卡瓦连接头。 将卡瓦连接头外壁有环形齿一端插入 位于绞车滚筒的连续管端部内， 用管钳等工具旋紧上紧螺母， 使卡瓦连 接头牢固地与连续管连接不脱出。
将浮动套和锁紧套、 导引头和牵引钢绳 1 1组装在一起形成牵引体， 每 2个锁紧套之间放 1至 2个浮动套。 组装锁紧套时， 先将牵引钢绳 11 依次穿过球面支撑体 5、 外锥卡套 7、 预紧螺母 8、 球形头 9， 调整好位 置后将外锥卡套 7夹住牵引钢绳 1 1放入内锥套 6内，再将内锥套 6放入 球面支撑体 5的圆柱形空间 （限位槽） 内， 旋入预紧螺母 8直至将牵引 钢绳 1 1牢牢夹紧， 最后连接球形头 9。在牵引钢绳 11上串连浮动套， 再 装锁紧套， 这样依次装下去， 直到达到所需长度后装上导引头。 导引头 的组装跟锁紧套相同。 锁紧套之间累计的总间隙控制在 30mm左右， 以 增加关节之间的自由度防止导管时卡死。
将锁紧套、 浮动套、 导引头和牵引钢绳组装在一起后形成的牵引体 用螺纹销 4连接到已装到连续管上的卡瓦连接头上。 导引头端通过注入 头鹅颈形导向器和夹持块一直插入防喷盒， 最后从防喷盒底部穿出， 启 动注入头链条夹紧液缸， 夹住导入装置的牵引体， 启动注入头马达， 马 达带动链条， 链条带动夹持块， 夹持块带动导入装置， 导入装置带动连 续管向下管方向移动， 连续管在导入装置的牵引下先通过鹅颈形导向器 折弯后进入夹持块， 并在夹持块的夹持带动下向下运动， 最后从防喷盒 穿出。先拆掉螺纹销 4解下牵引体， 再松掉上紧螺母 3， 轻轻敲击退出膨 胀塞 1， 解下卡瓦连接头， 导管工作完成。 附图说明
图 1是本发明连续管导入装置整体结构剖面示意图。
图 2是本发明卡瓦连接头结构剖面示意图。
图 3是本发明锁紧套结构剖面示意图。
图 4是本发明浮动套结构剖面示意图。
图 5是本发明导引头结构剖面示意图。
图 6是卡瓦连接头轴侧示意图。
图 7是锁紧套轴侧示意图。
图中， 1-膨胀塞， 2-卡瓦套， 3-上紧螺母， 4-螺纹销， 5-球面支撑 体， 6-内锥套， 7-外锥卡套， 8-预紧螺母， 9-球形头， 10-牵引钢绳， 11 - 锥形引体。 具体实施方式
实施例 1 : 以一个 2V '规格的连续管导入装置为例， 对本发明作进 一步详细说明 参阅图 1。 本发明连续管导入装置， 主要由卡瓦连接头、 锁紧套、 浮 动套、 导引头和牵引钢绳 10组成。
卡瓦连接头主要由膨胀塞 1、 卡瓦套 2、 上紧螺母 3三个零件构成。 膨胀塞 1 由圆锥体和螺紋体组成， 圆锥体和螺紋体连接在一起， 圆锥体 和螺纹体的中心线在同一条直线上， 膨胀塞 1 一端的圆锥体的大直径端 在外端， 即圆锥体的小直径端与膨胀塞 1 螺纹体一端连接， 螺纹体为圆 柱体形， 外壁上有梯形外螺纹。 卡瓦套 2为圆筒形， 卡瓦套 2外壁有环 形齿， 环形齿最大外径比 27 '的连续管最小内径小 0. 3mm。 卡瓦套 2内 壁为圆锥面， 卡瓦套 2圆锥面的锥度与膨胀塞 1 圆锥体的锥度相同。 膨 胀塞 1的圆锥体在卡瓦套 2内。 卡瓦套 2壁上有四条对称的轴向缝隙。 在膨胀塞 1的螺纹体上连接有上紧螺母 3，上紧螺母 3的上端面与卡瓦套 2的下端面接触。上紧螺母 3外壁为圆柱体形外径 60mm，总长度 85mm。 上紧螺母 3上端有梯形内螺纹 T28 X 2。 上紧螺母 3的下端为凸球面体， 在上紧螺母 3的下端有一个沿轴向的长方形槽,方槽尺寸 40 mm X 12 mm。 在上紧螺母 3下端有螺孔， 螺孔与上紧螺母 3下端的长方形槽垂直。 在 上紧螺母 3下端螺孔内固定有一个的螺纹销 4。 螺纹销 4是一端为直径 12mm的圆柱体， 螺纹销 4中部是连接螺纹 M14， 另一端有内六方扳手 槽。 螺纹销 4穿过牵引钢绳 10的绳套圈， 牵引钢绳 10的绳套圈内圈直 径为 12mm。将牵引钢绳 10的一端固定在上紧螺母 3下端的长方形槽中。 在卡瓦套 2下端的外壁上有六个扳手槽； 在上紧螺母 3的上端外壁上有 六个扳手槽。
锁紧套主要由球面支撑体 5、 内锥套 6、 外锥卡套 7、 预紧螺母 8和 球形头 9组成，球面支撑体 5为圆柱体形，球面支撑体 5的外径为 60mm， 总长度 85 mm。 球面支撑体 5的上端面为凹球面， 在凹球面的中心有直 径为 10mm 的中心孔。 在球面支撑体 5 内并在中心孔的下部有直径为 38mm 的圆柱形空间， 圆柱形空间的中心线同球面支撑体 5 的中心线在 同一条直线上。在圆柱形空间内有内锥套 6和外锥卡套 7， 内锥套 6外壁 为圆柱体形， 内锥套 6内有圆锥形孔， 锥度为 1 :8， 在内锥套 6内圆锥形 孔内有外锥卡套 7;所述的外锥卡套 7由两个相同的卡块组成，两个卡块 相对后外壁为圆锥体形， 锥度为 1 :8， 中心孔壁上有环形齿。 在球面支撑 体 5的下端有内螺紋。在球面支撑体 5内螺紋上有预紧螺母 8，预紧螺母 8外壁有螺纹，预紧螺母 8有中心孔，预紧螺母 8的中心孔能通过牵引钢 绳 10。 在球面支撑体 5内螺纹上固定有球形头 9; 球形头 9为圆柱体形， 球形头 9的外径为 60mm， 长度 45 mm, 与球面支撑体 5外径相同， 球 形头 9上端面有凸起的 M40外螺纹圆柱体， 外螺紋能与球面支撑体 5的 M40内螺纹连接。 球形头 9的下端有凸球面体； 球形头 9有中心孔。 牵 引钢绳 10穿过球面支撑体 5中心孔、 外锥卡套 Ί中心孔、 预紧螺母 8中 心孔和球形头 9的中心孔； 上紧螺母 3下端的凸球面体在球面支撑体 5 上端的凹球面内。
浮动套是球面支撑体 5和球形头 9螺纹连接成， 牵引钢绳 10穿过浮 动套的球面支撑体 5中心孔和浮动套的球形头 9的中心孔。
一个锁紧套和一个浮动套为一组联合锁紧体， 由牵引钢绳 10连接在 一起， 凸球面嵌入凹球面内。 所述的联合锁紧体的数量是 8个。 在最下 端的一个浮动套的下端通过牵引钢绳 10连接一个锥形引体 1 1。
导引头是由球面支撑体 5、 内锥套 6、 外锥卡套 7、 预紧螺母 8和锥 形引体 1 1组成， 导引头的结构与锁紧套结构基本相同， 不同点是所述的 锥形引体 1 1为圆锥体形， 锥形引体 1 1 的上端外径与球面支撑体 5外径 相同， 锥形引体 1 1 的下端有凸球面体； 锥形引体 1 1有中心孔， 牵引钢 绳 10穿过锥形引体 1 1的中心孔。 工业实用性
工作时， 连续管作业机注入头马达动力通过链条产生向下的注入力， 通过夹持块产生的摩擦力传给牵引体上的锁紧套， 再将此力通过锁紧套 里面的外锥卡套 7传给牵引体上的牵引钢绳 1 1，牵引钢绳 1 1再将此力传 给螺紋销 4和卡瓦连接头， 卡瓦连接头通过卡瓦套 2与连续管内壁的咬 合将牵引力传到连续管上， 从而实现了对连续管的牵引功能。
本发明连续管导入装置， 能实现快捷安全地将连续管从绞车滚筒上 抽出并通过鹅颈形导向器导入注入头夹持块。 不需要额外动力源， 仅依 靠连续管作业机自身提供动力源。 节与节之间采用球面关节式设计， 使 得连续管导入装置工作时各个关节不被卡死。 牵引体的制作采用柔性钢 丝绳作牵引主体 （整体提高导入装置柔度） ， 采用低密度低硬度高强度 有色金属合金作为导引体主材 （局部提高导入装置刚度） ， 通过外锥卡 套彼此连接在一起。

Claims

权 利 要 求
1、 一种连续管导入装置， 主要由卡瓦连接头、 锁紧套、 浮动套、 导 引头和牵引钢绳 (10)组成， 其特征在于：
卡瓦连接头主要由膨胀塞 (1)、 卡瓦套 (2)、 上紧螺母 (3)组成； 膨胀塞 (1)由圆锥体和螺纹体组成， 圆锥体和螺纹体连接在一起， 圆锥体和螺纹 体的中心线在同一条直线上，膨胀塞 (1)一端的圆锥体的大直径端在外端， 即圆锥体的小直径端与膨胀塞 (1)螺纹体一端连接， 螺纹体为圆柱体形外 壁上有螺紋； 卡瓦套 (2)为圆筒形， 卡瓦套 (2)外壁有环形齿， 卡瓦套 (2) 内壁为圆锥面， 卡瓦套 (2)圆锥面的锥度与膨胀塞 (1)圆锥体的锥度相同； 膨胀塞 (1)的圆锥体在卡瓦套 (2)内； 卡瓦套 (2)壁上有轴向缝隙； 在膨胀塞 (1)的螺紋体上连接有上紧螺母 (3)，上紧螺母 (3)的上端面与卡瓦套 (2)的下 端面接触； 上紧螺母 (3)外壁为圆柱体形， 上紧螺母 (3)—端有内螺纹； 上 紧螺母 (3)的下端为凸球面体， 在上紧螺母 (3)的下端有一个沿轴向的长方 形槽； 在上紧螺母 (3)下端有螺孔， 螺孔与上紧螺母 (3)下端的长方形槽垂 直； 在上紧螺母 (3)下端螺孔内固定有一个的螺纹销 (4); 螺纹销 (4)的端部 穿过牵引钢绳 (10)的绳套圈， 将牵引钢绳 (10)的一端固定在上紧螺母 (3) 下端的长方形槽中；
锁紧套主要由球面支撑体 (5)、 内锥套 (6)、 外锥卡套 (7)、 预紧螺母 (8) 和球形头 (9)组成， 球面支撑体 (5)为圆柱体形， 球面支撑体 (5)的上端面为 凹球面， 在凹球面的中心有中心孔； 在球面支撑体 (5)内并在中心孔的下 部有圆柱形空间， 圆柱形空间的中心线球面支撑体 (5)在中心线在同一条 直线上； 在圆柱形空间内有内锥套 (6)和外锥卡套 (7)， 内锥套 (6)外壁为圆 柱体形， 内锥套 (6)内有圆锥形孔， 在内锥套 (6)内圆锥形孔内有外锥卡套 (7)； 所述的外锥卡套 (7)由两个相同的卡块组成， 两个卡块相对后外壁为 圆锥体形， 中心孔壁上有环形齿； 在球面支撑体 (5)的下端有内螺纹； 在 球面支撑体 (5)内螺纹上有预紧螺母 (8)， 预紧螺母 (8)外壁有螺纹， 预紧螺 母 (8)有中心孔， 预紧螺母 (8)的中心孔能通过牵引钢绳 (10); 在球面支撑 体 (5)内螺紋上固定有球形头 (9); 球形头 (9)为圆柱体形，球形头 (9)外径与 球面支撑体 (5)外径相同， 球形头 (9)上端面有凸起的外螺紋圆柱体， 外螺 紋能与球面支撑体 (5)的内螺纹连接； 球形头 (9)的下端有凸球面体； 球形 头 (9)有中心孔； 牵引钢绳 (10)穿过球面支撑体 (5)中心孔、 外锥卡套 (7)中 心孔、预紧螺母 (8)中心孔和球形头 (9)的中心孔； 上紧螺母 (3)下端的凸球 面体在球面支撑体 (5)上端的凹球面内；
浮动套是球面支撑体 (5)和球形头 (9)螺纹连接成， 牵引钢绳 (10)穿过 浮动套的球面支撑体 (5)中心孔和浮动套的球形头 (9)的中心孔；
一个锁紧套和 1〜2个浮动套为一组联合锁紧体， 由牵引钢绳 (10)连 接在一起， 凸球面嵌入凹球面内； 所述的联合锁紧体的数量在 4〜15之 间； 在最下端的一个浮动套的下端通过牵引钢绳 (10)连接一个锥形引体
(11)；
导引头是由球面支撑体 (5)、 内锥套 (6)、 外锥卡套 (7)、 预紧螺母 (8) 和锥形引体 (11)组成， 导引头的结构与锁紧套结构基本相同， 不同点是所 述的锥形引体 (11)为圆锥体形，锥形引体 (11)的上端外径与球面支撑体 (5) 外径相同， 锥形引体 (11)的下端有凸球面体； 锥形引体 (11)有中心孔， 牵' 引钢绳 (10)穿过锥形引体 (11)的中心孔。
2、 根据权利要求 1所述的连续管导入装置， 其特征是： 在卡瓦套 (2) 下端的外壁上有六个扳手槽；在上紧螺母 (3)的上端外壁上有六个扳手槽。
3、 根据权利要求 1所述的连续管导入装置， 其特征是： 所述的上紧 螺母 (3)的内螺纹和膨胀塞 (1)螺纹体的外螺纹为梯形螺纹。
4、 根据权利要求 1、 2或 3所述的连续管导入装置， 其特征是： 螺 纹销 (4)是一端为光杆， 中间有连接螺紋， 另一端有内六方扳手槽。
PCT/CN2012/000510 2011-04-28 2012-04-13 连续管导入装置 WO2012146053A1 (zh)

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