斜井反井导孔钻具受力分析研究
发布时间：2018-12-14 21:38
【摘要】：随着技术的进步和材料的发展,反井钻机的施工工艺得到了快速的发展。伴随着国家近几年大力投资水电行业,实现水电工程立井斜井的安全快速旌工已经成为反井钻机技术推广的最好契机。目前,反井导孔的偏斜问题已经成为制约其发展的关键问题。本文依托于丰宁抽水蓄能电站上斜井反井施工研究课题,对反井钻机导孔旌工中的钻头受力、钻杆受力进行了一维二维建模分析,在此基础上对钻进参数和钻具布置对于反井偏斜的影响进行了理论推导；然后利用Matlab数值计算软件,对复杂的弯矩方程进行求解,并探讨了无稳定钻杆和单稳定钻杆两种情况下各种因素对于导孔偏斜影响状况。分析了钻压、倾角、钻具尺寸、稳定钻杆布置等因素对于导孔垂向偏斜力的影响。分析和计算了丰宁抽水蓄能电站上斜井的钻具布置,设计了加厚型、螺旋型、轴承型三种不同形式尺寸的稳定钻杆,并在实际的钻进中进行了试验与对比。研究结果表明,在反井斜井工程中无论是在力学模型的理论计算数值求解中,还是在实际的钻进过程中,钻压的增大都会使得导孔向下偏斜的趋势减小；导孔偏斜对于稳定钻杆的布置间距非常敏感,存在一个合理的区间使得导孔最不易偏斜；螺旋稳定钻杆和带轴承不旋转稳定钻杆对于导孔偏斜的控制要好于传统的直条型稳定钻杆；稳定钻杆稳定翼加厚,越接近钻头的尺寸,导孔偏斜率越低；导孔向上偏斜时,导孔方位角变化更快,向右偏斜的程度越厉害。所以在反井钻机的施工中对于钻机方案设定和安装时,要合理钻具选型与布置,实时反馈偏斜情况调整参数,尽量避免增斜情况的出现能有效的控制导孔的偏斜。为反井钻机在大直径斜井工程中的应用和推广提供技术参考。
[Abstract]:With the progress of technology and the development of materials, the construction technology of anti-well drilling rig has been developed rapidly. With the country investing heavily in hydropower industry in recent years, it has become the best opportunity to popularize the technology of counterwell drilling rig to realize the safety and speed of vertical inclined shaft in hydropower project. At present, the deflecting problem of anti-well guide hole has become a key problem restricting its development. In this paper, based on the research subject of inverse well construction in the upper inclined well of Fengning pumped Storage Power Station, the one-dimensional and two-dimensional modeling analysis of drill bit and drill pipe force in the guide hole of the anti-well drill rig is carried out. On the basis of this, the influence of drilling parameters and drilling tool arrangement on the deviation of anti-well is deduced theoretically. Then the complex moment equation is solved by using Matlab software, and the influence of various factors on the deflection of the guide hole is discussed in the case of unsteady drill pipe and single stable drill pipe. The effects of drilling pressure, inclination angle, drilling tool size and stable drill pipe arrangement on the vertical deflection force of the guide hole are analyzed. This paper analyzes and calculates the arrangement of drilling tools in the upper inclined well of Fengning pumped Storage Power Station, designs three kinds of stable drill pipes of thickening type, spiral type and bearing type, and carries out tests and comparisons in actual drilling. The results show that the increase of drilling pressure will decrease the downwardness of the guide hole in the reverse well inclined well engineering, both in the theoretical calculation of the mechanical model and in the actual drilling process. The deflection of guide hole is very sensitive to the spacing of the stable drill pipe, and there is a reasonable interval to make the guide hole most difficult to deviate. The control of guide hole deflection of spiral stabilized drill pipe and non-rotating stable drill pipe with bearing is better than that of traditional straight strip stable drill pipe, and the thickening of stabilizing wing of stabilizing drill pipe is closer to the size of drill bit, the deflecting rate of guide hole is lower. When the guide hole deflects upward, the azimuth of the guide hole changes faster, and the degree of deviation to the right is more severe. Therefore, in the process of setting and installing the drilling rig scheme, we should select and arrange the drilling tools reasonably, and adjust the parameters by feedback in real time so as to avoid the deviation of the guide hole effectively. It provides a technical reference for the application and popularization of reverse drilling rig in large diameter inclined well engineering.
【学位授予单位】：煤炭科学研究总院
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TV554;TV53
本文编号：2379366
[Abstract]:With the progress of technology and the development of materials, the construction technology of anti-well drilling rig has been developed rapidly. With the country investing heavily in hydropower industry in recent years, it has become the best opportunity to popularize the technology of counterwell drilling rig to realize the safety and speed of vertical inclined shaft in hydropower project. At present, the deflecting problem of anti-well guide hole has become a key problem restricting its development. In this paper, based on the research subject of inverse well construction in the upper inclined well of Fengning pumped Storage Power Station, the one-dimensional and two-dimensional modeling analysis of drill bit and drill pipe force in the guide hole of the anti-well drill rig is carried out. On the basis of this, the influence of drilling parameters and drilling tool arrangement on the deviation of anti-well is deduced theoretically. Then the complex moment equation is solved by using Matlab software, and the influence of various factors on the deflection of the guide hole is discussed in the case of unsteady drill pipe and single stable drill pipe. The effects of drilling pressure, inclination angle, drilling tool size and stable drill pipe arrangement on the vertical deflection force of the guide hole are analyzed. This paper analyzes and calculates the arrangement of drilling tools in the upper inclined well of Fengning pumped Storage Power Station, designs three kinds of stable drill pipes of thickening type, spiral type and bearing type, and carries out tests and comparisons in actual drilling. The results show that the increase of drilling pressure will decrease the downwardness of the guide hole in the reverse well inclined well engineering, both in the theoretical calculation of the mechanical model and in the actual drilling process. The deflection of guide hole is very sensitive to the spacing of the stable drill pipe, and there is a reasonable interval to make the guide hole most difficult to deviate. The control of guide hole deflection of spiral stabilized drill pipe and non-rotating stable drill pipe with bearing is better than that of traditional straight strip stable drill pipe, and the thickening of stabilizing wing of stabilizing drill pipe is closer to the size of drill bit, the deflecting rate of guide hole is lower. When the guide hole deflects upward, the azimuth of the guide hole changes faster, and the degree of deviation to the right is more severe. Therefore, in the process of setting and installing the drilling rig scheme, we should select and arrange the drilling tools reasonably, and adjust the parameters by feedback in real time so as to avoid the deviation of the guide hole effectively. It provides a technical reference for the application and popularization of reverse drilling rig in large diameter inclined well engineering.
【学位授予单位】：煤炭科学研究总院
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TV554;TV53
【参考文献】
相关期刊论文 前1条
1 陈召曦;;MATLAB在地球物理专业“计算方法”课程教学中的应用[J];黑龙江科技信息;2015年33期
，本文编号：2379366
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