射流式液动冲击器在ZK01-2井提速应用研究
投稿时间:2021-02-01  修订日期:2021-04-08  点此下载全文
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作者单位邮编
郭强 北京探矿工程研究所北京 100083 100083
翁炜 北京探矿工程研究所北京 100083 100083
袁文真 中国地质科学院北京 100037 100037
张德龙 北京探矿工程研究所北京 100083 100083
杨鹏 北京探矿工程研究所北京 100083 100083
张杰丰 河北省煤田地质局第四地质队河北 张家口 075100 075100
陈晓华 河北省煤田地质局第四地质队河北 张家口 075100 075100
基金项目:国家自然科学基金青年科学基金项目“涡轮取心钻进钻具径向振动特征研究”(编号:41802197);中国地质调查局地质调查项目“雄安新区地热清洁能源调查评价”(编号:DD20189625)、“张家口地区地热资源调查评价”(编号:DD20201102)
中文摘要:在深部地热开采中所钻遇的花岗岩地层,由于其硬度高、研磨性强、致密、可钻性差,致使钻进效率低、钻头消耗大、钻探周期长、成本高等。为提高钻探效率,降低钻探周期与成本,采用了射流式液动冲击器配牙轮钻头的钻进方法,在硬岩地层中实现了高效破岩的应用效果。钻进过程中还对排量、钻压、转速等多种钻井工艺参数进行了优化分析,并进行了多次现场试验验证。应用结果表明,硬岩地层在进尺相同的条件下,采用射流式液动冲击器提速钻进比常规普钻效率提高了30%以上,大幅提高了硬岩地层的机械钻速,有效提升了钻探效率,起到了高效破岩的作用,为花岗岩等硬岩地层提速增效提供了重要的技术支撑。
中文关键词:硬岩地层  射流式液动冲击器  钻进参数优化  钻井提速  牙轮钻头
 
Use of the jet-type fluid hammer for increasing ROP at ZK01-2 Well
Abstract:In deep geothermal mining, granite formation encountered in the drilling process will lead to low ROP, high bit consumption, and long drilling time due to its poor drillability, high density and hardness, and strong abrasiveness. In order to improve drilling efficiency, and reduce drilling time and cost, jet fluid hammer drilling was used with roller cone bits to efficiently break hard rock formations. At the same time, various drilling process parameters such as displacement, weight on bit, rotation speed, were optimized and field tested for multiple times. Application results showed that for the same footage drilled in hard rock formations, high-speed jet hydraulic fluid hammer drilling increased drilling efficiency by 30% over conventional drilling, which greatly increases the mechanical drilling speed in hard rock formations, and effectively increases drilling efficiency, achieving high-efficiency rock breaking. It can provide important technical support for drilling speeding up and increasing drilling efficiency in granite and other hard rock formations.
keywords:hard rock formation  jet type fluid hammer  parameter optimization  speed up drilling  cone bit
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