煤矿井下倾斜地层近水平定向钻孔造斜段轨迹设计
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摘要
钻孔轨迹设计是煤矿井下近水平定向技术顺利实施的前提。在近水平地层中,该类钻孔轨迹设计一般采用二维方法,而在倾斜地层中二维设计方法存在造斜段钻孔穿出目标层的问题。基于此,对定向钻孔穿过岩层的真厚度计算方法进行了研究,提出了利用地层单位法向量计算穿层厚度的方法,并编制了Excel计算数据表,用于指导近水平定向钻孔造斜段轨迹设计。通过淮南潘四东煤矿太原组灰岩近水平定向钻孔造斜段施工的实际应用,验证了该计算方法的可靠性,较好地指导了工程施工,对类似工程问题具有一定指导意义。
Trajectory design of the near-horizontal directional drilling technology in underground coal mine is one of key aspects to successfully implement the technology. The trajectory of hole in a nearly horizontal formation is designed generally by two-dimensional method, and this method usually leads to the problem that the deflecting section of the hole travels out of the inclined target formation.Therefor, the calculation methods of the drilled formation true thickness were studied in the paper, the method using the unit normal vector of formation was proposed, and computation table in Excel was developed to guide trajectory design of near-horizontal directional drilling. The reliability of the method is verified in oblique section construction of a nearly horizontal directional hole in the limestone of Taiyuan Formation in Pansidong Mine, which has certain guiding significance for similar engineering problems.
Trajectory design of the near-horizontal directional drilling technology in underground coal mine is one of key aspects to successfully implement the technology. The trajectory of hole in a nearly horizontal formation is designed generally by two-dimensional method, and this method usually leads to the problem that the deflecting section of the hole travels out of the inclined target formation.Therefor, the calculation methods of the drilled formation true thickness were studied in the paper, the method using the unit normal vector of formation was proposed, and computation table in Excel was developed to guide trajectory design of near-horizontal directional drilling. The reliability of the method is verified in oblique section construction of a nearly horizontal directional hole in the limestone of Taiyuan Formation in Pansidong Mine, which has certain guiding significance for similar engineering problems.
引文
[1]石智军,李泉新,姚克.煤矿井下1 800 m水平定向钻进技术与装备[J].煤炭科学技术,2015,43(2):109-113.SHI Zhijun,LI Quanxin,YAO Ke.Underground mine 1 800 m horizontal directional drilling technology and equipment[J].Coal Science and Technology,2015,43(2):109-113.
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[8]朱正勇,熊意林,鲁显松,等.岩层真厚度计算中负厚度的处理及其地质意义[J].资源环境与工程,2016,30(2):217-221.ZHU Zhengyong,XIONG Yilin,LU Xiansong,et al.Treatment of negative thickness in the calculation of true thickness of rock and its geological significance[J].Resources Environment&Engineering,2016,30(2):217-221.
[9]徐少康.新公式计算岩层真厚度的Excel算法[J].化工矿产地质,2007,29(4):225-226.XU Shaokang.Excel algorithm for calculating the true thickness of rock with a new formula[J].Geology of Chemical Minerals,2007,29(4):225-226.
[10]万逯进,吴美仁,郑承意,等.一步到位计算岩矿层真厚度矢量和标量的通式[J].地层学杂志,2014,38(4):417-423.WAN Lujin,WU Meiren,ZHENG Chengyi,et al.General formula for calculating true thickness vector and scalar of rocks in one step[J].Journal of Stratigraphy,2014,38(4):417-423.
[11]李乔乔,姚宁平,张杰.煤矿井下水平定向钻孔轨迹设计[J].煤矿安全,2011,42(12):51-54.LI Qiaoqiao,YAO Ningping,ZHANG Jie.Design of horizontal and directional borehole in mine underground[J].Safety in Coal Mines,2011,42(12):51-54.
[12]李泉新.煤矿井下定向钻孔轨迹设计与计算方法[J].煤矿安全,2014,45(2):141-144.LI Quanxin.Design and calculation method of directional borehole trajectory in coal mine underground[J].Safety in Coal Mines,2014,45(2):141-144.
[13]韩志勇.定向钻井设计与计算[M].北京:中国石油大学出版社,2007:12-16.
[14]赵永哲,石智军,张迎接.煤层气水平对接井用单弯无稳螺杆钻具组合造斜能力预测[J].煤田地质与勘探,2018,46(3):163-167.ZHAO Yongzhe,SHI Zhijun,ZHANG Yingjie.Prediction of deflection capacity of pdm with single bent screw without stabilizer for cbm horizontal-butted well[J].Coal Geology&Exploration,2018,46(3):163-167.
[15]赵永哲.煤矿区煤层气水平对接井轨迹控制与完井技术研究[D].北京:煤炭科学研究总院,2018.
[2]李泉新,石智军,许超,等.2 311 m顺煤层超长定向钻孔高效钻进技术[J].煤炭科学技术,2018,46(4):27-32.LI Quanxin,SHI Zhijun,XU Chao,et al.Efficient drilling technique of 2 311 m ultra-long directional borehole along coal seam[J].Coal Science and Technology,2018,46(4):27-32.
[3]梅新.井下定向钻进技术与装备创煤矿井下顺煤层定向钻孔深度新纪录[J].煤田地质与勘探,2014,42(5):54.MEI Xin.New record of directional drilling depth underground coal mine by drilling technology and equipment[J].Coal Geology&Exploration,2014,42(5):54.
[4]姚宁平,张杰,李泉新.煤矿井下定向钻孔轨迹设计与控制技术[J].煤炭科学技术,2013,41(3):7-11.YAO Ningping,ZHANG Jie,LI Quanxin.Tracing design and control technology of directional drilling borehole in underground mine[J].Coal Science and Technology,2013,41(3):7-11.
[5]文朴.论岩层真厚度的计算[J].成都地质学院学报,1980(2):80-90.WEN Pu.Calculation of the true thickness of rock[J].Journal of Chengdu Institute of Geology,1980(2):80-90.
[6]佟再山,佟洁.岩层真厚度计算的一个优化程序[J].地层学杂志,1997,21(3):239-240.TONG Zaishan,TONG Jie.Optimization program for calculating the true thickness of rock[J].Journal of Stratigraphy,1997,21(3):239-240.
[7]许边远.试用矢量表示岩层真厚度[J].中国区域地质,1998,17(1):80-86.XU Bianyuan.Vector representation of the true thickness of rock[J].Regional Geology of China,1998,17(1):80-86.
[8]朱正勇,熊意林,鲁显松,等.岩层真厚度计算中负厚度的处理及其地质意义[J].资源环境与工程,2016,30(2):217-221.ZHU Zhengyong,XIONG Yilin,LU Xiansong,et al.Treatment of negative thickness in the calculation of true thickness of rock and its geological significance[J].Resources Environment&Engineering,2016,30(2):217-221.
[9]徐少康.新公式计算岩层真厚度的Excel算法[J].化工矿产地质,2007,29(4):225-226.XU Shaokang.Excel algorithm for calculating the true thickness of rock with a new formula[J].Geology of Chemical Minerals,2007,29(4):225-226.
[10]万逯进,吴美仁,郑承意,等.一步到位计算岩矿层真厚度矢量和标量的通式[J].地层学杂志,2014,38(4):417-423.WAN Lujin,WU Meiren,ZHENG Chengyi,et al.General formula for calculating true thickness vector and scalar of rocks in one step[J].Journal of Stratigraphy,2014,38(4):417-423.
[11]李乔乔,姚宁平,张杰.煤矿井下水平定向钻孔轨迹设计[J].煤矿安全,2011,42(12):51-54.LI Qiaoqiao,YAO Ningping,ZHANG Jie.Design of horizontal and directional borehole in mine underground[J].Safety in Coal Mines,2011,42(12):51-54.
[12]李泉新.煤矿井下定向钻孔轨迹设计与计算方法[J].煤矿安全,2014,45(2):141-144.LI Quanxin.Design and calculation method of directional borehole trajectory in coal mine underground[J].Safety in Coal Mines,2014,45(2):141-144.
[13]韩志勇.定向钻井设计与计算[M].北京:中国石油大学出版社,2007:12-16.
[14]赵永哲,石智军,张迎接.煤层气水平对接井用单弯无稳螺杆钻具组合造斜能力预测[J].煤田地质与勘探,2018,46(3):163-167.ZHAO Yongzhe,SHI Zhijun,ZHANG Yingjie.Prediction of deflection capacity of pdm with single bent screw without stabilizer for cbm horizontal-butted well[J].Coal Geology&Exploration,2018,46(3):163-167.
[15]赵永哲.煤矿区煤层气水平对接井轨迹控制与完井技术研究[D].北京:煤炭科学研究总院,2018.