WO2017084226A1 - 电缆式电液控制割管工具 - Google Patents

电缆式电液控制割管工具 Download PDF

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Publication number
WO2017084226A1
WO2017084226A1 PCT/CN2016/076347 CN2016076347W WO2017084226A1 WO 2017084226 A1 WO2017084226 A1 WO 2017084226A1 CN 2016076347 W CN2016076347 W CN 2016076347W WO 2017084226 A1 WO2017084226 A1 WO 2017084226A1
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Prior art keywords
cutting
hydraulic
spring
anchoring
anchor
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PCT/CN2016/076347
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English (en)
French (fr)
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生凯章
单永斌
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北京美高科技发展有限公司
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Publication of WO2017084226A1 publication Critical patent/WO2017084226A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C1/00—Milling machines not designed for particular work or special operations
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B29/00—Cutting or destroying pipes, packers, plugs, or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground

Definitions

  • the invention relates to a petroleum underground cable cutting tool, in particular to a cable type electro-hydraulic control cutting tool.
  • the main design source of downhole pipe cutting tool products is used for oil and gas field radial horizontal wells, sidetracking horizontal wells, repair casing damage wells, oil drilling abandoned platforms, as well as coalbed methane, geothermal, natural gas, shale gas, steam wells and salt wells.
  • Such demand has broad market prospects.
  • the cutting technology that can be used in the above-mentioned situations at home and abroad mainly includes energy cutting, chemical cutting, diamond cutting rope technology, abrasive water jet technology and mechanical cutting, etc.
  • mechanical cutting is a relatively traditional casing cutting method with simple structure. It is easy to process and manufacture, and the cost is low.
  • the existing technical means is not much different from that of a decade ago, and there are many shortcomings.
  • the existing mechanical cutter has large vibration, easy eccentricity and lack of tools in the cutting process.
  • the reliable failure recovery mode makes the cutting efficiency low, mainly due to the poor anchoring stability and low flexibility of the failure recovery mode. It is represented by the electric cutting casing tool (EP1241321B1, US6868901B2) developed by SUNDEX, UK.
  • the main object of the present invention is to provide a cable-type electro-hydraulic control pipe cutting tool, which adopts the electro-hydraulic control method to generate an anchoring force, which has large anchoring force, is controllable, convenient for fault recovery, and has cutting
  • the characteristics of large margins make up for the shortcomings in the prior art.
  • a cable type electro-hydraulic control pipe cutting tool comprising an anchoring module and a cutting module, the anchoring module is disposed at the rear portion, and the cutting module is disposed at the front portion.
  • the anchoring module is composed of an electro-hydraulic oil source device, an environmental pressure balance device, an electro-hydraulic drive control device and an anchoring execution device
  • the electro-hydraulic oil source device is composed of an anchor motor, an anchor motor reducer and a hydraulic pump, and the anchor motor Connected to the hydraulic pump by an anchor motor reducer, the ambient pressure balance
  • the utility model is composed of an environmental balance piston joint, an anchor filter assembly, an anchoring environment pressure balance spring, a fuel tank and an anchor piston assembly, the anchor filter assembly is mounted on the environmental pressure balance piston joint, and the anchor piston assembly and the environmental pressure balance piston joint are An anchoring environment pressure balance spring is disposed therebetween, and the anchor motor pump chamber after the anchor piston assembly is a fuel tank, and the electro-hydraulic drive control device comprises a check valve, a relief valve, a two-position two-way solenoid valve, and a two-position three-way solenoid valve.
  • the utility model is composed of a hydraulic two-way lock, the check valve inlet is connected to the hydraulic pump outlet, the check valve outlet is connected to the overflow valve, and the check valve outlet main oil circuit is connected in parallel with the two two-position three-way solenoid valve A port.
  • Each of the two-position three-way valve P port is connected with a hydraulic control one-way valve and a two-position three-way valve T port is connected with the fuel tank, and two hydraulic control one-way valves constitute a hydraulic two-way lock structure, two hydraulic control one-way valves
  • the outlet is connected to the inlet and outlet of the hydraulic cylinder, and the rodless cavity of the hydraulic cylinder is connected with the two-position two-way solenoid valve, and the hydraulic cylinder is connected with the anchoring execution device.
  • the anchoring device of the anchoring module is composed of a driven rod, a large spring stop, a large spring, a small spring stop, a small spring, an extrapolation cylinder, a lower crank linkage mechanism and an upper crank linkage mechanism, the driven
  • the front end of the rod is connected with the end of the piston rod of the hydraulic cylinder
  • the driven rod is provided with a large cylindrical section and a small cylindrical section from the front to the rear
  • the large spring stopper, the large spring and the small spring stopper and the small spring are respectively set in the slave
  • the large spring stops are respectively connected to the lower crank link mechanism by an extrapolation cylinder
  • the small spring stop is connected to the upper crank link mechanism.
  • the stiffness of the large spring is greater than the spring stiffness of the small spring.
  • the cutting module is composed of a cutting driving device, an oil-immersing motor environment pressure balancing device and a cutting execution device
  • the cutting driving device comprises a cutting motor, a cutting speed reducer and a main rotating shaft
  • the cutting motor passes the cutting speed reducer and the main
  • the rotation axis is connected
  • the cutting execution device comprises a cutter head spindle, a torque limiter wheel, a relative fixed gear, a planetary gear, a bevel gear meshing pair, a rotary screw, a nut, a cartridge and a blade
  • the cutter spindle and the cutter The main rotating shaft of the driving device is connected, the torque limiter wheel is coaxially disposed outside the main rotating shaft in the cutting drive device, and the end of the torque limiter wheel is fixedly provided with a relatively fixed gear, and the fixed fixed fixed gear passes through the planetary gear and
  • the bevel gear meshing pair is connected to the rotating screw, the nut is fixed on the cartridge, the rotating screw is screwed on the nut, and the
  • the cutting execution device of the cutting module further includes a torque setting assembly that acts on an outer surface of the torque limiter wheel.
  • the oil-immersed motor environment pressure balance device in the cutting module is cut by a filter mesh assembly, and cut and sealed
  • the ring, the cutting balance piston joint and the cutting spring are mounted on the cutting balance piston joint, and a cutting spring is disposed between the cutting balance piston joint and the cutting piston assembly.
  • the blade has a radial maximum diameter to tip diameter ratio of 1.97:1.
  • a downhole cable type electro-hydraulic control cutting tube tool adopting a modular design through the technical scheme, utilizing the characteristics of large power-to-weight ratio and convenient unloading of the electro-hydraulic system, utilizing new features
  • the blade feeding mechanism realizes the characteristics of large anchoring output force, controllability and convenient fault recovery, and has an anchoring state pre-tightening function to prevent external vibration from causing anchor failure and thereby improving the stability of the cutting operation, and has a large cutting range margin.
  • the feature is to avoid deformation of the downhole casing and cause the cutting work to break.
  • the blade has a radial maximum diameter to a cutter head diameter ratio of 1.97:1, and has a modular design, high interchangeability and convenient maintenance.
  • Figure 1 is a schematic view showing the structure of the front end of the present invention.
  • Figure 2 is a cross-sectional view showing the structure of the front section A-A of the present invention.
  • Fig. 3 is a cross-sectional view showing the structure of the front section B-B of the present invention.
  • Figure 4 is a cross-sectional view showing the structure of the middle section A-A of the present invention.
  • Fig. 5 is a cross-sectional view showing the structure of the middle section B-B of the present invention.
  • Figure 6 is a cross-sectional view showing the structure of the rear section A-A of the present invention.
  • Figure 7 is a cross-sectional view showing the structure of the rear section B-B of the present invention.
  • the present invention relates to a cable-type electro-hydraulic controlled pipe cutting tool, comprising an anchoring module and a cutting module, the anchoring module is disposed at a rear portion, and the cutting module is disposed at a front portion, and the anchoring module is configured by An electrohydraulic oil source device, an environmental pressure balance device, an electrohydraulic drive control device, and an anchor actuator device, the electrohydraulic oil source device being composed of an anchor motor 1, an anchor motor reducer 2, and a hydraulic pump 3, the anchor motor 1 Connected to the hydraulic pump 3 by an anchor motor reducer 2, which consists of an environmentally balanced piston joint 4, an anchor screen assembly 5, an anchoring ambient pressure balancing spring 6, a tank 7 and an anchoring piston assembly 8, said
  • the anchoring filter assembly 5 is mounted on the environmental pressure balance piston joint 4, and an anchoring environment pressure balance spring 6 is disposed between the anchoring piston assembly 8 and the environmental pressure balance piston joint 4, and the anchor motor pump chamber after the anchor piston assembly 8 is the oil tank 7
  • the two hydraulic control check valves 14 constitute a hydraulic two-way lock structure, and two hydraulic control one-way
  • the outlet of the valve 14 is connected to the inlet and outlet of the hydraulic cylinder 15, and the rodless chamber of the hydraulic cylinder 15 communicates with the two-position two-way solenoid valve 12, and the hydraulic cylinder 15 is connected to the anchoring actuator.
  • the anchoring device of the anchoring module comprises a follower rod 16, a large spring stop 17, a large spring 18, a small spring stop 19, a small spring 20, an extrapolation cylinder 21, a lower crank linkage 22 and an upper crank linkage.
  • the mechanism 23 is configured.
  • the front end of the driven rod 16 is connected to the end of the piston rod of the hydraulic cylinder 15.
  • the driven rod 16 is provided with a large cylindrical section and a small cylindrical section from the front to the rear.
  • the large spring stopper 17 and the large spring 18 and a small spring stop 19 and a small spring 20 are respectively fitted on the large cylindrical section and the small cylindrical section corresponding to the driven rod 16, and the front ends of the large spring 18 and the small spring 20 are respectively pressed against the driven rod 16.
  • the rear ends of the large spring 18 and the small spring 20 are respectively pressed against the corresponding large spring stopper 17 and the small spring stopper 19, and the large spring stopper 17 passes through the extrapolation cylinder 21 and the lower crank linkage mechanism, respectively. 22 is connected, and the small spring stop 19 is connected to the upper crank link mechanism 23.
  • the stiffness of the large spring 18 is greater than the spring rate of the small spring 20.
  • the cutting module is composed of a cutting driving device, an oil-immersing motor environment pressure balancing device and a cutting execution device, and the cutting driving device comprises a cutting motor 24, a cutting speed reducer 25 and a main rotating shaft 26,
  • the cutting motor 24 is connected to the main rotating shaft 26 by a cutting speed reducer 25, which includes a cutter head spindle 27, a torque limiter wheel 28, a fixed fixed gear 29, a planetary gear 30, a bevel gear meshing pair 31, and a rotating wire.
  • Rod 32, nut 33, cartridge 34 and blade 35 said cutter spindle 27 being coupled to a main rotary shaft 26 in the cutting drive, the torque limiter wheel 28 being coaxially disposed in the main rotary shaft of the cutting drive
  • the outer side of the torque limiter wheel 28 is fixedly provided with a relatively fixed gear 29, and the fixed fixed gear 29 is connected to the rotary screw 32 via the planetary gear 30 and the bevel gear meshing pair 31, and the nut 33 is fixed to the cartridge 34.
  • the rotary screw 32 is screwed onto the nut 33, and the blade 35 is fixed to the cartridge 34.
  • the cutting actuator of the cutting module also includes a torque setting assembly 36 that acts on the outer surface of the torque limiter wheel 28.
  • the oil-immersed motor ambient pressure balancing device in the cutting module is composed of a cutting screen assembly 37, a cutting balance piston joint 39 and a cutting spring 40, which is mounted on the cutting balance piston joint 39, and cuts the balance piston
  • a cutting spring 40 is disposed between the joint 39 and the cutting piston assembly 38.
  • the blade has a radial maximum diameter to tip diameter ratio of 1.97:1.
  • the well fluid enters the balance spring chamber 9 through the anchoring filter assembly 5, and the oil tank 7 is pre-stressed when the oil is injected, so that the anchoring environment balance spring 6 is compressed and passed.
  • the piston assembly 8 is anchored so that the oil tank 7 does not affect the output power of the hydraulic system under the action of the environmental pressure, that is, the output force of the piston rod of the hydraulic cylinder 15 is not affected by the environmental pressure, and at the same time, it is ensured that there is still a certain back pressure to facilitate the pumping operation of the hydraulic pump 3.
  • the ground control device gives a command signal to drive the 2/2-way solenoid valve 12 and keeps it in a continuously energized state, the anchor motor 1 starts to run to the set speed, and the anchor motor 1 and the anchor motor reducer 2 are connected to drive the hydraulic pump 3,
  • the outlet pressure oil of the hydraulic pump 3 passes through the one-way valve 10, wherein the relief valve 11 ensures that the hydraulic pump 3 avoids the instantaneous large load from affecting the normal operation, and the check valve 10 outlet pressure oil is connected in parallel with the two two-position three-way solenoid valves 13, and two
  • the hydraulic control check valve 14 constitutes a hydraulic two-way lock structure; the ground command signal output command causes a two-position three-way solenoid valve 13 to energize the valve, the check valve 10 outlet and a liquid
  • the control check valve 14 is connected, so that the high pressure oil opens a hydraulically controlled check valve 14 and enters the rodless chamber of the hydraulic cylinder 15.
  • the other two-position three-way solenoid valve 13 is in the off state of the power-off valve, and the other hydraulic control is one-way.
  • the valve 14 is reversely opened under the action of the hydraulic control force so that the hydraulic cylinder 15 has a rod cavity returning oil through the other two-position three-way solenoid valve 13, and the driven rod 16 is sequentially driven by the large spring 18 under the driving of the piston rod of the hydraulic cylinder 15.
  • the large spring block 17 pushes the cylinder 21 to drive the lower crank link mechanism 22 to unfold, and through the small spring 20, small spring block Block 19, driving the lower crank linkage 22 to deploy, and then the ground control command signals to de-energize the other two-position three-way solenoid valve 13, and the hydraulic cylinder 15 is locked in the two-way lock condition of the two pilot operated check valves 14.
  • the position of the piston rod of the hydraulic cylinder 15 realizes the anchoring work of the cable cutting tool.
  • the ground command signal sends an instruction to drive the cutting motor 24 to operate, and the cutting motor 24 outputs the set speed to be decelerated by the cutting speed reducer 25, and then transmits the rotary motion to the main rotating shaft 26, and the main rotating shaft 26 is fixedly connected with the cutter head spindle 27, As the main rotating shaft 26 rotates, the synchronously driven blade 35 performs a rotary cutting motion, and the radial feed motion of the blade 35 passes through the torque limiter wheel 28, the torque setting assembly 36, the fixed fixed gear 29, the planetary gear 30, and the bevel gear meshing.
  • the sub-31 and the rotary screw 32, the nut 33 and the cartridge 34 realize the transmission of power and the automatic adjustment of the torque, and are gradually developed.
  • the ground control device issues a command to drive the cutting motor 24 to stop rotating, and then drives the cutting motor 24 to reverse, so that the blade 35 is retracted to the initial position. In the state, the ground control device issues an instruction to stop driving the cutting motor 24 to prepare the recovery tool.
  • the ground control device issues an instruction to drive the anchor motor 1 to start running to the set speed, and then the ground control device gives a command signal to drive the other two-position three-way solenoid valve 13 and keeps it in a continuously energized state, and the check valve 10 exits and Another hydraulically controlled check valve 14 is connected, so that the high pressure oil opens another hydraulically controlled check valve 14 and enters the rod chamber of the hydraulic cylinder 15.
  • a two-position three-way solenoid valve 13 is in a closed state of the power-off valve, and a hydraulic control
  • the check valve 14 is reversely opened under the action of the hydraulic control force so that the rodless chamber of the hydraulic cylinder 15 is returned to the oil through a two-position three-way solenoid valve 13, and the driven rod 16 is sequentially driven by the large spring by the piston rod of the hydraulic cylinder 15. 18.
  • the large spring stop 17 pushes the cylinder 21 to drive the lower crank link mechanism 22 to retract, and drives the upper crank link mechanism 23 to retract by the small spring 20 and the small spring stop 19, and then the ground control command signals to make another A two-position three-way solenoid valve 13 is de-energized, and the cable cutting tool is un-anchored to prepare for the cable cutting tool recovery.
  • the two-position two-way solenoid valve 12 plays an active unloading role, and is always energized during the cutting process of the cable cutting tool. When the cable cutting tool has an unexpected failure and needs to be raised from the well, the two-position two-way solenoid valve is used. When the power is turned off, the lower crank link mechanism 22 and the upper crank link mechanism 23 can be easily retracted to realize the anchoring action.
  • the torque setting assembly 36 When working to cut the cutting sleeve blade excessively, the torque setting assembly 36 loses the fixed control of the torque limiter wheel 28, causing rotation relative to the fixed gear 29, reducing the rotational speed of the planetary gear 30, thereby reducing the blade.
  • the radial feed speed of the frame 34 reduces the cutting force and effectively plays a role Protect the function of the blade 35 and the device.

Abstract

电缆式电液控制割管工具，包括锚固模块和切割模块，锚固模块设置在后部，切割模块设置在前部，锚固模块由电液油源装置、环境压力平衡装置、电液驱动控制装置和锚固执行装置构成。采用模块化设计，利用电液系统功率重量比大、卸荷方便的特点，利用新的刀片进给机制，以实现锚固输出力大且可控、故障回收方便的特点，具备锚固状态预紧功能，以防止外界振动使得锚固失效进而提高切割作业稳定性之特性，具备切割范围裕度大的特点，避免井下套管变形而导致切割工作藕断丝连情况。刀片切割径向最大直径与刀头直径比为1.97:1，通过采用模块化设计，具有较高的互换性和维修方便的特点。

Description

电缆式电液控制割管工具 技术领域
本发明涉及一种石油井下电缆式割管工具，特别是涉及一种电缆式电液控制割管工具。
背景技术
井下割管工具产品的主要设计来源，是用于油气田径向水平井、侧钻水平井、修复套损井、石油钻井废弃平台，以及煤层气、地热、天然气、页岩气、蒸汽井及盐井等的需求，具有广阔的市场前景。
当前，国内外可用于上述场合的切割技术主要有聚能切割、化学切割、金刚石切割绳技术、磨料水射流技术及机械切割等，其中机械切割是一种比较传统的套管切割方法，结构简单、易加工制造且成本低，但是现有的技术手段和十几年前差别不大，而且存在许多不足之处，现有的机械割刀在切割过程中由于振动比较大、刀具容易偏心及缺乏可靠的故障回收模式，使得切割效率比较低，主要原因是锚固稳定性差、故障回收模式灵活性低造成的，以英国SUNDEX公司研制的电动切割套管工具(EP1241321B1，US6868901B2)为代表，该工具具有安全、清洁、可控及精度高等优点，但是该系统存在锚固力小调节困难，且故障回收成功率低等缺点，此外还存在切割范围裕度小易造成切割藕断丝连情形，难以使得切割作业顺利进行。
技术问题
有鉴于此，本发明的主要目的在于提供一种电缆式电液控制割管工具，通过本技术方案采用电液控制方式产生锚固力，该锚固力大而可控、故障回收方便，同时具备切割范围裕度大的特点，从而有效的弥补了现有技术中存在的不足。
技术解决方案
为了达到上述目的，本发明的技术方案是这样实现的：一种电缆式电液控制割管工具,包括锚固模块和切割模块，所述锚固模块设置在后部，切割模块设置在前部，所述锚固模块由电液油源装置、环境压力平衡装置、电液驱动控制装置和锚固执行装置构成，所述电液油源装置由锚固电机、锚固电机减速器和液压泵构成，所述锚固电机通过锚固电机减速器与液压泵相连接，所述环境压力平衡装 置由环境平衡活塞接头、锚固滤网组件、锚固环境压力平衡弹簧、油箱和锚固活塞组件构成，所述锚固滤网组件安装在环境压力平衡活塞接头上，锚固活塞组件与环境压力平衡活塞接头之间设置有锚固环境压力平衡弹簧，锚固活塞组件之后的锚固电机泵腔为油箱，所述电液驱动控制装置由单向阀、溢流阀、二位二通电磁阀、二位三通电磁阀和液压双向锁构成，所述单向阀进口连接在液压泵出口上，单向阀出口旁路连接溢流阀，单向阀出口主油路并联连接两个二位三通电磁阀的A口，每个二位三通阀P口均连接一个液控单向阀及二位三通阀T口与油箱连通，两个液控单向阀构成液压双向锁结构，两个液控单向阀出口与液压缸进出口相连接，所述液压缸的无杆腔与二位二通电磁阀相连通，液压缸与锚固执行装置相连。
所述锚固模块的锚固执行装置由从动杆、大弹簧挡块、大弹簧、小弹簧挡块、小弹簧、外推筒、下曲柄连杆机构和上曲柄连杆机构构成，所述从动杆的前端与液压缸活塞杆末端相连，从动杆上由前向后设置有大圆柱段和小圆柱段，所述大弹簧挡块、大弹簧和小弹簧挡块、小弹簧分别套装在从动杆所对应的大圆柱段和小圆柱段上，所述大弹簧和小弹簧的前端分别抵压在从动杆上，大弹簧和小弹簧的后端分别抵压在所对应的大弹簧挡块和小弹簧挡块上，所述大弹簧挡块分别通过外推筒与下曲柄连杆机构连接，所述小弹簧挡块与上曲柄连杆机构相连。
所述大弹簧的刚度大于小弹簧的弹簧刚度。
所述切割模块由切割驱动装置、浸油电机环境压力平衡装置和切割执行装置构成，所述切割驱动装置包括有切割电机、切割减速器和主旋转轴，所述切割电机通过切割减速器与主旋转轴相连，所述切割执行装置包括刀头主轴、扭矩限制器轮、相对固定齿轮、行星齿轮、锥齿轮啮合副、旋转丝杆、丝母、刀片架和刀片，所述刀头主轴与切割驱动装置中的主旋转轴相连接，扭矩限制器轮同轴设置在切割驱动装置中的主旋转轴的外侧，扭矩限制器轮的端部固定设置有相对固定齿轮，相对固定齿轮通过行星齿轮和锥齿轮啮合副与旋转丝杆相连，丝母固定在刀片架上，旋转丝杆旋装在丝母上，刀片固定在刀片架上。
所述切割模块的切割执行装置中，还包括扭矩设定组件，所述扭矩设定组件作用在扭矩限制器轮的外表面上。
所述切割模块中的浸油电机环境压力平衡装置由切割滤网组件、切割密封 圈、切割平衡活塞接头和切割弹簧构成，所述切割滤网组件安装在切割平衡活塞接头上，切割平衡活塞接头与切割活塞组件之间设置有切割弹簧。
所述刀片切割径向最大直径与刀头直径比为1.97:1。
有益效果
采用上述技术方案后的有益效果是：一种井下电缆式电液控制割管工具，通过本技术方案，采用模块化设计，利用电液系统功率重量比大、卸荷方便的特点，利用新的刀片进给机制，以实现锚固输出力大且可控、故障回收方便的特点，具备锚固状态预紧功能，以防止外界振动使得锚固失效进而提高切割作业稳定性之特性，具备切割范围裕度大的特点，避免井下套管变形而导致切割工作藕断丝连情况。所述刀片切割径向最大直径与刀头直径比为1.97:1，通过采用模块化设计，具有较高的互换性和维修方便的特点。
附图说明
图1为本发明的前端结构示意图。
图2为本发明的前段A-A向剖视结构示意图。
图3为本发明的前段B-B向剖视结构示意图。
图4为本发明的中段A-A向剖视结构示意图。
图5为本发明的中段B-B向剖视结构示意图。
图6为本发明的后段A-A向剖视结构示意图。
图7为本发明的后段B-B向剖视结构示意图。
图中，1锚固电机、2锚固电机减速器、3液压泵、4环境压力平衡活塞接头、5锚固滤网组件、6锚固环境压力平衡弹簧、7油箱、8锚固活塞组件、9平衡弹簧腔10单向阀、11溢流阀、12二位二通电磁阀、13二位三通电磁阀、14液控单向阀、15液压缸、16从动杆、17大弹簧挡块、18大弹簧、19小弹簧挡块、20小弹簧、21外推筒、22下曲柄连杆机构、23上曲柄连杆机构(大曲柄在下)、24切割电机、25切割减速器、26主旋转轴，27刀头主轴、28扭矩限制器轮、29相对固定齿轮、30行星齿轮、31锥齿轮啮合副、32旋转丝杆、33丝母、34刀片架、35刀片，36扭矩设定组件、37切割滤网组件、38切割活塞组件、39切割平衡活塞接头、40切割弹簧。
本发明的实施方式
下面将结合附图对本发明中具体实施例作进一步详细说明。
如图1-图7所示，本发明涉及的电缆式电液控制割管工具,包括锚固模块和切割模块，所述锚固模块设置在后部，切割模块设置在前部，所述锚固模块由电液油源装置、环境压力平衡装置、电液驱动控制装置和锚固执行装置构成，所述电液油源装置由锚固电机1、锚固电机减速器2和液压泵3构成，所述锚固电机1通过锚固电机减速器2与液压泵3相连接，所述环境压力平衡装置由环境平衡活塞接头4、锚固滤网组件5、锚固环境压力平衡弹簧6、油箱7和锚固活塞组件8构成，所述锚固滤网组件5安装在环境压力平衡活塞接头4上，锚固活塞组件8与环境压力平衡活塞接头4之间设置有锚固环境压力平衡弹簧6，锚固活塞组件8之后的锚固电机泵腔为油箱7，所述电液驱动控制装置由单向阀10、溢流阀11、二位二通电磁阀12、二位三通电磁阀13和液压双向锁构成，所述单向阀10进口连接在液压泵3出口上，单向阀10出口旁路连接溢流阀11，单向阀11出口主油路并联连接两个二位三通电磁阀13的A口，每个二位三通阀13的P口均连接一个液控单向阀14及二位三通阀13的T口与油箱7连通，两个液控单向阀14构成液压双向锁结构，两个液控单向阀14出口与液压缸15进出口相连接，所述液压缸15的无杆腔与二位二通电磁阀12相连通，液压缸15与锚固执行装置相连。
所述锚固模块的锚固执行装置由从动杆16、大弹簧挡块17、大弹簧18、小弹簧挡块19、小弹簧20、外推筒21、下曲柄连杆机构22和上曲柄连杆机构23构成，所述从动杆16的前端与液压缸15活塞杆末端相连，从动杆16上由前向后设置有大圆柱段和小圆柱段，所述大弹簧挡块17、大弹簧18和小弹簧挡块19、小弹簧20分别套装在从动杆16所对应的大圆柱段和小圆柱段上，所述大弹簧18和小弹簧20的前端分别抵压在从动杆16上，大弹簧18和小弹簧20的后端分别抵压在所对应的大弹簧挡块17和小弹簧挡块19上，所述大弹簧挡块17分别通过外推筒21与下曲柄连杆机构22连接，所述小弹簧挡块19与上曲柄连杆机构23相连。
所述大弹簧18的刚度大于小弹簧20的弹簧刚度。
所述切割模块由切割驱动装置、浸油电机环境压力平衡装置和切割执行装置构成，所述切割驱动装置包括有切割电机24、切割减速器25和主旋转轴26，所 述切割电机24通过切割减速器25与主旋转轴26相连，所述切割执行装置包括刀头主轴27、扭矩限制器轮28、相对固定齿轮29、行星齿轮30、锥齿轮啮合副31、旋转丝杆32、丝母33、刀片架34和刀片35，所述刀头主轴27与切割驱动装置中的主旋转轴26相连接，扭矩限制器轮28同轴设置在切割驱动装置中的主旋转轴26的外侧，扭矩限制器轮28的端部固定设置有相对固定齿轮29，相对固定齿轮29通过行星齿轮30和锥齿轮啮合副31与旋转丝杆32相连，丝母33固定在刀片架34上，旋转丝杆32旋装在丝母33上，刀片35固定在刀片架34上。
所述切割模块的切割执行装置中，还包括扭矩设定组件36，所述扭矩设定组件36作用在扭矩限制器轮28的外表面上。
所述切割模块中的浸油电机环境压力平衡装置由切割滤网组件37、切割平衡活塞接头39和切割弹簧40构成，所述切割滤网组件37安装在切割平衡活塞接头39上，切割平衡活塞接头39与切割活塞组件38之间设置有切割弹簧40。
所述刀片切割径向最大直径与刀头直径比为1.97:1。
当电缆式电液控制割管工具下入到井下指定位置后，井液通过锚固滤网组件5进入平衡弹簧腔9，油箱7注油时有一定预压，使得锚固环境平衡弹簧6被压缩，通过锚固活塞组件8，使得油箱7在环境压力作用下不影响液压系统输出功率，即使得液压缸15活塞杆输出力不受环境压力影响，同时确保依然有一定的背压利于液压泵3抽吸工作；地面控制装置给出指令信号驱动二位二通电磁阀12，并使之处于持续通电状态，锚固电机1开始运转至设定转速，锚固电机1与锚固电机减速器2连接驱动液压泵3，液压泵3出口压力油通过单向阀10，其中溢流阀11确保液压泵3避免瞬时大载荷影响正常工作，单向阀10出口压力油并联两个二位三通电磁阀13，与两个液控单向阀14组成液压双向锁结构；地面指令信号输出指令使得一个二位三通电磁阀13通电打开阀门，单向阀10出口与一个液控单向阀14连通，使得高压油打开一个液控单向阀14进入液压缸15无杆腔，此时另一个二位三通电磁阀13处于断电阀门关闭状态，另一个液控单向阀14在液控力的作用下反向打开使得液压缸15有杆腔通过另一个二位三通电磁阀13回油，从动杆16在液压缸15活塞杆的驱动下依次通过大弹簧18、大弹簧挡块17外推筒21驱动下曲柄连杆机构22展开，以及通过小弹簧20、小弹簧挡 块19、驱动下曲柄连杆机构22展开，接着地面控制指令发出信号使得另一个二位三通电磁阀13断电，液压缸15在两个液控单向阀14组成的双向锁情形下锁定液压缸15活塞杆位置，实现电缆割管工具锚固工作。
此后，地面指令信号发出指令驱动切割电机24工作，切割电机24输出设定转速经切割减速器25减速后将旋转运动传递到主旋转轴26上，主旋转轴26与刀头主轴27固定连接，随着主旋转轴26旋转，同步带动刀片35做旋转切割运动，刀片35的径向进给运动通过扭矩限制器轮28、扭矩设定组件36、相对固定齿轮29、行星齿轮30、锥齿轮啮合副31以及旋转丝杆32、丝母33和刀片架34实现动力的传递及扭矩的自动调节，逐渐展开。当刀片35展开到套管内壁后开始切割套管，直至切割完毕；切割完毕后，地面控制装置发出指令使得驱动切割电机24停止转动，接着驱动切割电机24反转，使得刀片35回缩至初始状态，地面控制装置发出指令停止驱动切割电机24，准备回收工具。
接着地面控制装置发出指令驱动锚固电机1开始运转至设定转速，接着地面控制装置给出指令信号驱动另一个二位三通电磁阀13，并使之处于持续通电状态，单向阀10出口与另一个液控单向阀14连通，使得高压油打开另一个液控单向阀14进入液压缸15有杆腔，此时一个二位三通电磁阀13处于断电阀门关闭状态，一个液控单向阀14在液控力的作用下反向打开使得液压缸15无杆腔通过一个二位三通电磁阀13回油，从动杆16在液压缸15活塞杆的驱动下依次通过大弹簧18、大弹簧挡块17外推筒21驱动下曲柄连杆机构22回缩，以及通过小弹簧20、小弹簧挡块19驱动上曲柄连杆机构23回缩，接着地面控制指令发出信号使得另一个二位三通电磁阀13断电，实现电缆割管工具解除锚固，为电缆割管工具回收做好准备。
所述二位二通电磁阀12起主动卸荷作用，在电缆割管工具切割进程中始终处于通电状态，当电缆割管工具出现意外故障并需从井下提出时，使二位二通电磁阀12断电，就可以使得下曲柄连杆机构22及上曲柄连杆机构23轻松回缩，实现解除锚固动作。
在工作进行切割套管刀片切割力过大时，扭矩设定组件36失去对扭矩限制器轮28的固定控制，造成相对固定齿轮29产生转动，降低了行星齿轮30的转动速度，从而降低了刀片架34的径向进给速度，降低了切割力，有效的起到了 保护刀片35和设备的作用。
以上所述，仅为本发明的较佳可行实施例而已，并非用以限定本发明的范围。

Claims (7)

  1. 一种电缆式电液控制割管工具,包括锚固模块和切割模块，所述锚固模块设置在后部，切割模块设置在前部，其特征在于，所述锚固模块由电液油源装置、环境压力平衡装置、电液驱动控制装置和锚固执行装置构成，所述电液油源装置由锚固电机、锚固电机减速器和液压泵构成，所述锚固电机通过锚固电机减速器与液压泵相连接，所述环境压力平衡装置由环境压力平衡活塞接头、锚固滤网组件、锚固环境压力平衡弹簧、油箱和锚固活塞组件构成，所述锚固滤网组件安装在环境压力平衡活塞接头上，锚固活塞组件与环境压力平衡活塞接头之间设置有锚固环境压力平衡弹簧，锚固活塞组件之后的锚固电机泵腔为油箱，所述电液驱动控制装置由单向阀、溢流阀、二位二通电磁阀、二位三通电磁阀和液压双向锁构成，所述单向阀进口连接在液压泵出口上，单向阀出口旁路连接溢流阀，单向阀出口主油路并联连接两个二位三通电磁阀的A口，每个二位三通阀P口均连接一个液控单向阀及二位三通阀T口与油箱连通，两个液控单向阀构成液压双向锁结构，两个液控单向阀出口与液压缸进出口相连接，所述液压缸的无杆腔与二位二通电磁阀相连通，液压缸与锚固执行装置相连。
  2. 根据权利要求1所述的电缆式电液控制割管工具,其特征在于，所述锚固模块的锚固执行装置由从动杆、大弹簧挡块、大弹簧、小弹簧挡块、小弹簧、外推筒、下曲柄连杆机构和上曲柄连杆机构构成，所述从动杆的前端与液压缸活塞杆末端相连，从动杆上由前向后设置有大圆柱段和小圆柱段，所述大弹簧挡块、大弹簧和小弹簧挡块、小弹簧分别套装在从动杆所对应的大圆柱段和小圆柱段上，所述大弹簧和小弹簧的前端分别抵压在从动杆上，大弹簧和小弹簧的后端分别抵压在所对应的大弹簧挡块和小弹簧挡块上，所述大弹簧挡块分别通过外推筒与下曲柄连杆机构连接，所述小弹簧挡块与上曲柄连杆机构相连。
  3. 根据权利要求2所述的电缆式电液控制割管工具,其特征在于，所述大弹簧的刚度大于小弹簧的弹簧刚度。
  4. 根据权利要求1所述的电缆式电液控制割管工具，其特征在于，所述切割模块由切割驱动装置、浸油电机环境压力平衡装置和切割执行装置构成，所述切割驱动装置包括有切割电机、切割减速器和主旋转轴，所述切割电机通过切割减速器与主旋转轴相连，所述切割执行装置包括刀头主轴、扭矩限制器轮、相对 固定齿轮、行星齿轮、锥齿轮啮合副、旋转丝杆、丝母、刀片架和刀片，所述刀头主轴与切割驱动装置中的主旋转轴相连接，扭矩限制器轮同轴设置在切割驱动装置中的主旋转轴的外侧，扭矩限制器轮的端部固定设置有相对固定齿轮，相对固定齿轮通过行星齿轮和锥齿轮啮合副与旋转丝杆相连，丝母固定在刀片架上，旋转丝杆旋装在丝母上，刀片固定在刀片架上。
  5. 根据权利要求4所述的电缆式电液控制割管工具，其特征在于，所述切割模块的切割执行装置中，还包括扭矩设定组件，所述扭矩设定组件作用在扭矩限制器轮的外表面上。
  6. 根据权利要求4所述的电缆式电液控制割管工具，其特征在于，所述切割模块中的浸油电机环境压力平衡装置由切割滤网组件、切割平衡活塞接头和切割弹簧构成，所述切割滤网组件安装在切割平衡活塞接头上，切割平衡活塞接头与切割活塞组件之间设置有切割弹簧。
  7. 根据权利要求4所述的电缆式电液控制割管工具，其特征在于，所述刀片切割径向最大直径与刀头直径比为1.97:1。
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