# 火驱点火装置电缆滚筒与注入头自动协同动作液控原理研究与应用Research and Application of Hydraulic Control Principle of Automatic Collaboration between the Cable Drum and Injection Head of Fire-drive Ignition Device

DOI: 10.12677/JOGT.2019.416087, PDF, HTML, XML, 下载: 155  浏览: 207  科研立项经费支持

Abstract: The vehicle-mounted mobile fire-drive ignition device was essentially a small coiled tubing unit, which was difficult to operate because it did not take into account the automatic collaboration between the cable drum and injection head. According to the principle of “drum back pressure method", the hydraulic system was reformed to realize the automatic collaboration between the drum and injection head, but the tension of cable was too large. The reasons for the excessive cable tension force are found by analyzing the force of the drum. The “drum pressurization method” is used to make the motor work actively, reduce the cable tension force, and perfectly solve the problems of the automatic collaboration function between the drum and the injector and the precise control of cable tension force.

1. 前言

Figure 1. The vehicle-mounted mobile fire-drive ignition device

2. 自动控制原理研究与实现

2.1. 滚筒背压法

Figure 2. The schematic diagram of hydraulic control by drum back pressure method

Figure 3. The schematic diagram of drum motor control

Figure 4. The schematic diagram of automatic collaboration between the drum and motor

2.2. 滚筒加压法

$F\cdot \left(R+h\right)={M}_{0}+{p}_{\text{b}}\cdot C\cdot I$ (1)

${M}_{0}={p}_{0}\cdot C\cdot I$ (2)

Figure 5. The applied force and bending deformation of coiled tubing on the drum

$F=\left({p}_{0}+{p}_{\text{b}}\right)\cdot C\cdot I/\left(R+h\right)$ (3)

$F=\left({p}_{0}-{p}_{\text{g}}\right)\cdot C\cdot I/\left(R+h\right)$ (4)

3. 应用情况与结论

2018年，新疆油田分公司已经开始在红山油田进行火驱工业化推广应用，车载移动式点火装置作为点火作业的核心装备，对火驱工业化推广起到了至关重要的作用。截至目前，已在现场点火60多井次。经改进后的液压系统实现了滚筒与注入头的自动协同功能，同时也实现了电缆张紧力的精确控制，既降低了操作难度，也起到了延长电缆使用寿命、降低点火作业成本的目的。

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