| 彭奋飞.针对海底钻机硬岩钻进的绳索取心钻具关键机构优化[J].地质与勘探,2020,56(1):154-162 |
| 针对海底钻机硬岩钻进的绳索取心钻具关键机构优化 |
| Optimization of key mechanism of the wire-line coring drilling tool for submarine hard rock |
| 投稿时间：2019-03-02 修订日期：2019-10-17 |
| DOI：10.12134/j.dzykt.2020.01.015 |
| 中文关键词: 海洋勘探 绳索取心 悬挂机构 ABAQUS仿真 硬岩钻进 |
| 英文关键词: ocean exploration, wire-line coring, suspension mechanism, ABAQUS simulation, hard rock drilling |
| 基金项目:国家自然科学基金项目（编号：41702390），国家重大专项项目（编号：2017YFC0307501）
资助，湖南省自然科学基金项目（编号：2018JJ3173）资助 |
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| 中文摘要: |
| 以提高在硬岩钻进的绳索取心钻具工作可靠性为目的，从提高单动机构的单动性能和悬挂机构的工作可靠性两方面着手，对钻具的单动机构展开结构优化并利用ABAQUS仿真分析手段对悬挂机构进行模拟硬岩拔取仿真分析。结果表明：经改进后钻具的单动机构尺寸合理结构更为紧凑，有利于钻具总长的缩短，同时提高了对心轴定心效果以及防海水腐蚀性好的特点，满足海底钻机的使用工况；改进后的悬挂机构能够降低在拔心过程中的由于悬挂环和座环塑性变形相互咬合失效所造成的内管总成无法顺利打捞的风险。 |
| 英文摘要: |
| This purpose of this work is to enhance the reliability of wire-line coring tool in hard rock drilling. Starting from improving the single-action performance of single-action mechanism and the working reliability of suspension mechanism, we optimize the deployment structure of single-action mechanism of the drilling tool and simulate the pullout of hard rock by the ABAQUS simulation method. The results show that the improved single-acting mechanism is more compact in size and structure, which is favorable to shortening the total length of the drilling tool. At the same time, it raises the centering effect of the mandrel and the performance of seawater corrosion resistance to meet the operating conditions of the submarine drilling rig. The improved suspension mechanism can reduce the risk that the inner tube assembly cannot be salvaged because of the failure caused by the plastic deformation of the suspension ring and the seat ring during core pulling. |
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