破碎地层取心钻具研究现状及展望
投稿时间:2020-04-28  修订日期:2020-04-28  点此下载全文
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施山山 中国地质科学院勘探技术研究所 shiss3@sina.com 
闫家 中国地质科学院勘探技术研究所  
李宽 中国地质科学院勘探技术研究所  
王文 中国地质科学院勘探技术研究所  
李鑫淼 中国地质科学院勘探技术研究所  
汪凯丽 中国地质科学院勘探技术研究所  
基金项目:所管项目:干热岩坚硬破碎地层高效取心钻具研制(项目编号YB202008)、地调项目:苏皖赣地区页岩油气战略选区调查(中国地质科学院勘探技术研究所)(项目编号:DD20201171)
中文摘要:数十年来,国内外专家学者们针对破碎地层取心技术做出了大量的研究,在降低进心阻力、提高岩心获取率、增加回次进尺、提高机械钻速等方面已取得了显著成效。但针对岩心卡堵事故的解决方法研究相对较少,虽然以JamBuster为代表的解堵取心工具通过增加衬管的方法在一定程度上缓解了岩心卡堵情况、增加了回次进尺,但仍未从根本上解决卡堵问题。本文总结了国内外数十年以来针对破碎地层研发的专用取心工具与技术,分析了现有的取心工具在破碎地层取心中存在的不足,并针对破碎地层取心技术未来的发展方向提出了一些建议,以期早日攻克破碎地层取心这一世界性难题。
中文关键词:破碎地层  取心工具  岩心卡堵  解堵  岩心获取率
 
Research Status and Prospects of Coring Tools for Broken Formation
Abstract:During the past decades, experts and scholars of domestic and abroad have been making lots of research on coring in broken formation. Notable results have been achieved on decreasing core entry resistance, increasing core recovery rate, extending footage per round, magnifying ROP etc. However, less research is made on solutions to core plugging accidents. To some extent the plugging-solving coring tools represented by JamBuster alleviated the core plugging situation, extended the footage per round by adding liners, the problem of core plugging hasn’t been fundamentally solved. This paper summarizes the research actualities on special coring tools and technologies for broken formations in the last decades, analyses the corresponding shortcomings, and puts forward some suggestions its future development direction in order to conquer this worldwide problem as soon as possible.
keywords:Broken formation  Coring tools  Core plugging  Solve plugging  Core recovery rate
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