复杂岩层高位定向长钻孔成孔技术应用研究  

Application of high directional long hole drilling in complex rock formation

作　　者：洪建俊 张杰 刘杰[2] HONG Jian-jun;ZHANG Jie;LIU Jie(Xi'an Research Institute of China Coal Science and Technology Group,Xi'an 710071,China;Huai Bei Mining Limited Company,Huaibei 235000,China)

机构地区：[1]中煤科工集团西安研究院有限公司,陕西西安710071 [2]淮北矿业股份有限公司,安徽淮北235000

出　　处：《煤炭工程》2020年第3期57-61,共5页Coal Engineering

摘　　要：为解决高位定向长钻孔大深度、大摩阻、岩层复杂、排渣难等钻进难题,通过定向钻进装备优选、泥浆脉冲随钻测量系统应用、高韧性螺旋钻杆提高钻杆柱强度和有效排渣、定向钻进轨迹设计和控制技术优化、以及复合定向钻进工艺降摩阻等方法,有效提高高位定向长钻孔的钻孔深度,增强了高位定向长钻孔成孔技术的钻具适配性和地层适应性。该技术应用在桃园矿Ⅱ8221高位定向长钻孔施工中,成功实现最大956m的高位钻孔深度记录,后期钻孔瓦斯抽采浓度高、纯量大,有效解决了回采工作面的瓦斯问题,取得了良好的效果,为高位定向长钻孔成孔技术应用研究提供了宝贵经验。Aiming at the large depth,large friction,complex rock formation and difficult slag discharge in high directional long hole drilling,through optimization of directional drilling equipment,application of mud pulse measurement system while drilling,high toughness auger drill pipe column strength and effective slagging,directional drilling trajectory design and control technology optimization,and composite directional drilling process to reduce friction,etc.,the drilling depth of high-position directional long boreholes is improves,the slagging capacity of drilling construction is greatly improved,and the adaptability and formation adaptability of high-position directional long-hole drilling technology is enhanced.It is applied in the borehole construction of Taoyuan MineⅡ8221,and the drilling depth record is 956 m.The concentration of gas drainage in the later stage is high and the scalar quantity is large,which solves the gas problem in the coal face.The study can provide valuable experience for the application of high directional long hole drilling technology.

关 键 词：高位定向长钻孔 成孔技术 泥浆脉冲测量系统 复合钻进 

分 类 号：TD712.6[矿业工程—矿井通风与安全]