摘要
采用自主研制的原状样品取样钻机于工程现场从5个不同层理角度开展泥岩样品钻取实验。通过分析钻进时最佳水流量、转速与钻进速度的关系,研究泥岩的钻进层理结构效应。实验结果表明,层理角度与最佳水流量曲线大致呈"V"形,60°时最佳水流量最小;在达到最佳水流量的情况下,不同层理角度的钻进速度也不同,曲线呈倒"V"型,60°时钻进速度最大。进一步分析可知,不同层理角度泥岩的强度是不一样的,强度排序为σ_(0°)>σ_(90°)>σ_(30°)>σ_(45°)>σ_(60°),60°时钻进层理结构效应最大,0°时最小。
A self-developed sampling rig for undisturbed sam- ples was adopted in the drilling experiments of mudstone samples at five angles on the project site. By analyzing the relationship be- tween optimum water volume, speed of rotation and drilling speed, the drilling bedding structure effect of mudstone was stud- led. The experimental results showed that the stratification angle and the optimum water quantity curve is approximately ＂V＂ ,and the optimum water quantity is minimum at 60°. With the opti- mum water quantity, the drilling speed of different bedding an- gles is different, the curve is inverted ＂V＂ shape, and the drilling speed is the maximum at 60°. By further analysis, it is concluded that the strength of mudstone varies with different bedding angles and its order is σ0°〉σ90°〉σ45°〉σ60°. The effect of drilling bedding structure was the biggest at 60°,and the minimum at 0°.
作者
闫顺玺
王晓雷
刘治国
YAN Shun-xi WANG Xiao-lei LIU Zhi-guo(North China University of Science and Technology, Tangshan Hebei 063210,China China University of Mining and Technology （ Beijing）, Beijing 100083, China Tiandi Science and Technology Co. ,Ltd. , Beijing 100013 ,China)
出处
《化工矿物与加工》
北大核心
2017年第9期59-62,共4页
Industrial Minerals & Processing
基金
河北省教育厅项目(QN2015041)
河北省博士研究生创新资助项目(2016B07)
关键词
层理结构效应
泥岩
层理角度
钻进
bedding structure effect
mudstone
bedding angle
drilling
