用户名: 密码: 验证码:
全孔反循环潜孔锤参数优化及其钻进工艺研究
详细信息    本馆镜像全文|  推荐本文 |  |   获取CNKI官网全文
摘要
论文在理论研究的基础上,建立了潜孔锤内部动力过程数学模型,完善了潜孔锤内部动力过程模拟仿真计算软件,进行大量仿真计算分析与对比,优化了全孔反循环潜孔锤的性能、结构参数,完成了系列规格潜孔锤的结构设计,潜孔锤耗风量小,压力降低,性能优良,系列规格潜孔锤的优化设计填补了国内空白;
     对关键零部件进行了有限元分析和结构优化,提高了潜孔锤可靠性和使用寿命。应用CFD分析软件,进行了不同结构类型反循环钻头底部流场的模拟仿真分析与计算,获得了钻头底部流体通道内的压力场、速度场的分布规律,创新了反循环钻头结构类型,提高了全孔反循环潜孔锤钻进技术对复杂地层的适应能力。
     结合极复杂地层特点,深入开展了全孔反循环潜孔锤钻探技术的钻进工艺研究,解决了复杂地层勘探的技术难题,在大量试验研究基础上,总结了极复杂地层钻进工艺参数和操作方法,为该技术推广应用起到了示范作用。
Down-the-hole impactor drove by compressed air has been catching technicists’attention in drilling realm for its higher rate of penetration and percussive method of fracturing rock since its appearance. With the development of science and technology and need of engineering, the DTH drilling technique has been developing continually, many new drilling tools and drilling technique methods were invented one after the other. From general DTH hammer positive circulation drilling technique to CSR local reverse circulation drilling technique, hollow-through DTH hammer reverse circulation drilling technique appeared ultimately. The multi-techniques drilling technique was developed at the basis of single drilling technique. The appearance of every new technique and method resulted in large advance of the drilling technique and enhancement of penetration rate and drilling quality, at the same time, good economic and social benefits were produced.
     The technique of coring continually by reverse circulation with hollow-through DTH hammer is regarded as the latest DTH drilling method, which integrated three advanced drilling methods of DTH hammer fracturing rock, fluent removal by reverse circulation and continually obtaining core and sample during drilling. This kind of technique has been applied successfully in practice after several years’study and test. However, in the face of complex geology and construction conditions, there are also many problems needed to be solved. Therefore, the CGS’s projects“the research and application of hollow-through DTH hammer drilling technique in the exploration of solid mine”and“serialization research and application of hollow-through DTH hammer”were set up to support the research. At present, the projects have been accomplished successfully, experts thought highly of the achievements. The theory and test studies on the problems existed in hollow-through DTH hammer reverse circulation drilling technique were done in this paper.
     The performance of DTH hammer is the key to the drilling effect. The mathematical model of movement discipline of piston in cylinder and state change of compressed air in fore-and-after gas chambers was built to improve the performance and structural parameters of DTH hammer. Furthermore, differential equations of piston motion and gas pressure and temperature fluctuation in fore-and-after gas chamber were set up. The special software for power process simulation of DTH hammer was further improved. At the base of a great deal of emulational calculation and weighing analysis, the performance and structural parameters of a series of hollow-through DTH hammers were optimized and redesigned. We have achieved physical design, drawing and manufacture of many different specification hollow-through DTH hammers which were debugged indoor. The redesigned DTH hammer has many specialties such as lower air consumption, lower loss of pressure and good performance. Design based on finite element analysis and structural optimizations were done to key parts, so the reliability and service life of DTH hammer were enhanced.
     The special reverse circulation bit is the key part of the reverse circulation drilling system. In order to perfect the structure of the bit, the theoretic and practical studies on the bit have been done. Using the CFD technique, the computational model of the special reverse circulation bit’s hydro-channels detail was set up with the software—FLUENT. Logical initial and boundary conditions for calculation were defined, then, analog simulations of bottom flow field of different structure bits were done. By which we got the regularities of distribution of pressure field, velocity field and thermal field. At the same time, the influence of the size and position of injector hole on distribution of pressure and velocity field was simulated. The area proportional relation of injector hole and bottom jet orifice was analysed. We can get following conclusions: 1.Using the reverse circulation bit with bottom jet orifices, the reverve circulation can form successfully for the pumping and jetting function of bottom jet orifices in integrity formation. However,the effect of reverse circulation will be influenced seriously by air leaking at the bottom. 2.The problem of air leaking in broken formation can be solved by using reverse circulation bit with inner jet orifices. Low pressure zone is formed above the inner jet orifices for its pumping function, which can reform the shape of flow field at the hole bottom and strengthen the reverse circulation. The reverse circulation can form successfully even if the formation is complex and leaking seriously. 3.Smaller value ofαangle, the inclination of inner jet orifices, is good for formation of reverse circulation. But 25°is a ciritical point. When the value ofαis between 20°and 30°,the reverse circulation can form successfully. 4. When the acreage ratio of inner jet orifices and bottom jet orifices is larger than 1,the effect of reverse circulation is better than that smaller than 1.The results of analog simulation play an important part in optimum design of structure and size of reverse circulation bit and curtailing the spending of time and money in researching Which was good for further test research of hollow-through DTH hammer.
     Piston is a moving part of DTH hammer, which produces impact force and realizes fracture of rock. Because of its complex state of loading, it is necessary to do further study on the force state of piston. Firstly, using stress wave theory, analysis and count of the compressive and tension stress wave produced by the impact of piston during the moving process were done. The position of maximum crushing stress and tension stress was found out. Then analysis of stress and strain was done with finite element software, the results of which are useful as the basis of optimization design. The core tube is other very important part of DTH hammer. Its interior passageway is the essential way for cuttings discharged out of hole by reverse circulation, and its external construction assorts with piston to achieve distribution of compressed air. Core tube does not bear any impact force directly, but fracture failure once appeared during using process, at the base of analysis of stress and strain, the fracture failure of core tube was avoided after improvement. .
     Luanchuan molybdenum-tungsten mine located in Henan province is the biggest molybdenum mine in china, the formation of the mine zone belongs to classical complex strata. The diamond and general DTH drilling methods were once used, but the drilling couldn’t be proceeded because of drilling trouble caused by serious leaking of stratum. Aiming at the existed technique problems, further study on the application of hollow-through DTH hammer in practice and optimum design of special reverse circulation bit and proper choice of drilling rig and air compressor were done. The technique parameters and operating methods of the technique of coring continually by reverse circulation with hollow-through DTH hammer were generalized. Thousands of meters footage was done, which not only brought a huge amount of economic benefits for the enterprise but also accumulated a mass of practice experience of hollow-through DTH hammers’application.
     The natural environment of Baiganhu tungsten-tin mine in Xinjiang is bad, and geological conditions are complicated. The formations is composed mainly of quartz schist, quartz sandstone, marble, granite and relax deposit. The stability of strata is bad because of fracture. Leaking of the strata is serious. Permafrost exists beneath the surface. Because of lack of water, the drilling cost of general drilling methods which uses water-based fluid as circulation medium is high and the rate of penetration is very low, sometimes it can’t be used at all. The drilling technique problem under complicated conditions was solved by using hollow-though DTH hammer reverse circulation drilling technique with proper drilling parameters. The rate of penetration of hollow-through DTH hammer drilling method is more than six times higher than that of general diamond drilling.
     The applications in practice show that the technique of coring continually by reverse circulation with hollow-through DTH hammer is of abroad using field and can be used widely in solid mineral and resources exploration. The DTH drilling technique has many advantages, such as higher rate of penetration, high percentage recovery of core and sample, lower cost of drilling, the ability to adapt to complicated strata and so on. At present, the hollow-through DTH drilling technique as an advanced drilling technique has been perfected relatively through a series of studies on the theories and experiments, and it is of the advanced level in international domain.
引文
1.张国忠,气动冲击设备及其设计,机械工业出版社,1991 年 10 月
    2.刘得顺,李夕兵著,冲击机械系统动力学,科学出版社,1999 年 7 月
    3.王新月,杨清真,热力学与气体动力学基础,西北工业大学出版社,2004 年 8 月
    4.陆宏圻等编著,喷射技术理论及应用,武汉大学出版社,2004 年 6 月
    5.杜祥鳞,张茂举,李敦宝,潜孔锤钻进技术,1988 年 10 月
    6.张祖培,殷琨,蒋荣庆,孙友宏,岩土钻掘工程新技术,地质出版社,2003 年 10 月
    7.耿瑞伦等,多工艺空气钻进技术,地质出版社,1995 年 10 月
    8.赵承庆,姜,毅,气体射流动力学,北京理工大学出版社,1998 年 6 月
    9.董志勇编著,射流力学,科学出版社,2005 年 3 月
    10.赵统武编著,冲击钻进动力学,冶金工业出版社,1996 年 10 月
    11.钱翼稷,周玉文等译,流体力学及其工程应用,机械工业出版社,2006 年 2 月
    12.钱翼稷,空气动力学,北京航空航天大学出版社,2004 年 9 月
    13.吴宗泽主编,机械设计,高等教育出版社,2001 年 7 月
    14.詹德新,王家楣,工程流体力学,湖北科学技术出版社,2001 年 10 月
    15.韩占忠,王敬,兰小平,FLUENT 流体工程仿真计算实例与应用,北京理工大学出版社,2004 年 6 月
    16.崔海萍,闫军,张琪,SolidWorks,2006,中文版标准实例教程,机械工业出版社, 2006 年 1 月
    17.胡任喜,郭军,王仁广等,Solidworks,2005 中文版机械设计高级应用实例,机械工业出版社 2005.1
    18.李世忠等,钻探工艺学,地质出版社,1988 年
    19.武汉地质学院,勘探技术研究所,成都地质学院,合编,英汉探矿工程词典,1980 年 4 月北京
    20.徐小荷等,气动凿岩理论基础与电算方法,东北工学院出版社,1986.8
    21,[美]William,C.Lyons/Boyun,Guo/Frank,A.Seidel 著,空气和气体钻井手册(第
    二版).中国石化出版社,2006.8
    22.张运钧,周润民,周国荣等,金矿钻探技术,地质出版社,1991 年 12 月
    23.多工艺空气钻进技术(上),长春地质学院探工系编,1987 年 10 月
    24.周国荣,戴智长,刘光志-钻探(钻掘)工程论文集,中国物价出版社,200 年 10月:P249—250
    25.刘广志,刘光志钻探工程论文集,地质出版社,1992 年 8 月:P10-11
    26.王达,张伟,张晓西等,中国大陆科学钻探工程,科钻一井钻探工程技术,科学技术出版社,2007 年 2 月:P210-216
    27.王福军,计算流体动力学分析——CFD 软件原理与应用,清华大学出版社,2004.9
    28.同济大学等,机械制图,高等教育出版社,1994 年 8 月
    29.朱德本等,机械制图手册,机械工业出版社,1997 年 8 月
    30.徐灏,机械设计手册,机械工业出版社,1998 年 3 月
    31.马宏伟,吴斌,弹性动力学及其数值方法,中国建材工业出版社,2000.5
    32.陈卓如,金朝铭,王洪杰,王成敏,工程流体力学,高等教育出版社,2004.1
    33.姜继海,宋锦春,高常识,液压与气压传动,高等教育出版社,2002.1
    34.黄勇主编,工程材料及机械制造基础,国防工业出版社,2004 年 9 月
    35.孙康宁,程素娟,孙宏飞,现代工程材料成形与制造工艺基础,机械工业出版社,2001 年 3 月
    36.王茂森,殷琨,复杂地层钻进中贯通式潜孔锤的应用及反循环钻头的改进,煤田地质与勘探,2005(5):P79-80
    37.王茂森,殷琨,复杂地层物探爆破孔钻进工艺方法研究,地质与勘探,2002(3):P87-88;
    38.王茂森,殷琨,大直径环式组合潜孔锤及钻进工艺研究,地质与勘探,2006(2):P 90-92,96
    39.王如生,殷琨,王茂森,贯通式潜孔锤钻头钻进复杂地层防卡堵试验研究,煤矿机械 2005(7):P40-43
    40.侯传彬,王茂森,贯通式潜孔锤新技术在矿山勘探中的应用试验,世界地质,2006(3)
    41.殷琨,王茂森,彭枧明,贯通式取心潜孔锤钻探技术在固体矿产勘探中的应用研究,吉林大学,2006 年 12 月
    42.殷琨,彭枧明,王茂森,潜孔锤反循环钻具系列化研究及应用研究,吉林大学,2006 年 12 月
    43.GQ-100/44 型贯通式潜孔锤与钻头参数计算及计算机仿真电算报告,长春地质学院,1993 年 5 月
    44.谭凡教,博士论文,射流式冲击器改型设计及 MATLAB 仿真计算,吉林大学,2005 年 4 月
    45.熊青山,博士论文,高围压深孔潜孔锤仿真电算研究及其应用,吉林大学,2002年 5 月
    46.高丽稳,冲击机械活塞强度研究的现状,工程机械,2005(1):P37-49
    47.詹军,殷琨等,风动冲击器活塞冲击末速度的有限元分析,煤田地质与勘探,2003(6):P58-60
    48.李大用,CSR 钻探设备及工艺国产化取得显著效果,探矿工程,1991(3):P1-3
    49.李士民,潜孔锤钻进最优转速的探讨,探矿工程,1991(6):P32-33
    50.陈嘉霖,风动潜孔锤钻进孔深与风压的关系,探矿工程,1995(2):P46
    51.校月钿,蒋荣庆,张勇,潜孔锤钻进技术在管棚施工中的应用,探矿工程,2002(3):P66-69
    52.刘广志编译,国外一种无阀贯通式气动潜孔锤问世,探矿工程,1991(1):P60-62
    53.冉德发,空气潜孔锤取心钻具,探矿工程,1991(5):P13-14
    54.郑继天,解伟,空气潜孔锤钻进在蒙古国图-敖锌矿东部水源地勘探中的应用,探矿工程,2002(4):P24
    55.计胜利,高景贤,潜孔锤偏心跟管钻进在京珠高速公路边坡支护中的应用,探矿工程,2002(4):P24
    56.陈修星,张永勤,刘辉,复杂地层双介质循环系统钻进工艺理论探讨,探矿工程,2002(6):P32-33
    57.张永勤,刘辉,陈修星,多介质反循环复合钻探技术的研究及开发应用,探矿工程,2003(1):P43-45
    58.蒋荣庆,贯通式气动潜孔锤反循环连续取心(样)钻进在水文水井钻中的应用,探矿工程,1991(6),
    59.张远丰,国产化设备 CSR 钻进技术在宣东煤田的应用,煤田地质与勘探,1993(2):P62-65
    60.李士民,郭克勤,空气潜孔锤钻进在京西煤田的应用,煤田地质与勘探,1989(1):P57-62
    61.李士民,中国煤田的空气潜孔锤钻进,中国煤田地质,1993 年 6 月,P95-97
    62.耿瑞伦,国外空气潜孔锤钻头设计与效果,探矿工程译丛,1989(6):P1-6
    63.高世钧,关于深孔水下 CSR 空气潜孔锤钻进的研究成果及其推广应用的若干见解中国煤田地质,1994 年 4 月
    64.郝树青,气动贯通式潜孔锤反循环连续取心取样钻进技术在河南钼矿中的应用,钻采工艺,2006(8):P1-3
    65.刘克林,潜孔锤反循环钻进井口密封器的改进,西部探矿工程,2005(10):P130
    66.熊青山,彭振斌,可视化气动潜孔锤设计软件系统开发,凿岩机械气动工具,2004(2):P54-59
    67.熊青山,彭振斌,殷琨,潜孔锤结构参数优化—遍历法,凿岩机械气动工具,2004(2):P42-45
    68.李伟涛,殷琨,张德龙,贯通式潜孔锤反循环连续取心技术的试验研究,西部探矿工程 2004(6):P115-117
    69.熊青山,彭振斌,殷琨,配气行程对常、高围压潜孔锤性能影响的电算研究,凿岩机械气动工具,2003(2):P33-40
    70.陈家旺,彭枧明,殷琨,贯通式气动潜孔锤钻头反循环结构的计算机辅助设计,凿岩机械气动工具,2003(8):P14-18
    71.熊青山,殷琨,曾勇辉,高围压潜孔锤前后气室长度及进出气口面积分析,西部探矿工程,2003(11):P103-106
    72.熊青山,殷琨,曾勇辉,高围压潜孔锤背压、气源压力、锤重、活塞直径比分析,西部探矿工程,2003(10):P115-117
    73.程火金等,冲击活塞断裂分析及提高寿命的途径,工程机械,1997(4):P39-43
    74.杨日平,提高高气压潜孔冲击器活塞寿命途径,凿岩机械气动工具,1997(2):P35-37,
    75.周梓荣等,凿岩活塞开裂原因分析与控制,凿岩机械气动工具,1998(4)
    76.谭卓英,球齿钻头嵌套固齿的理论与研究,凿岩机械气动工具,1991(1):P37-42
    77.张宗贤,关于球齿钻头的合理使用,凿岩机械气动工具,1991(2):P39-44
    78.殷琨,蒋荣庆,The Down-the-hole(DTH)Hammer Reverse Circulation,Drilling,Technique and Its Application,第 30 届国际地质大会,1997 年国际 VSP 出版社
    79.蒋荣庆,殷琨,Drill System in Complex Formations,俄罗斯圣彼得堡矿业大学学报,1997 年
    80.林元华,施太和,李润芳等,空气冲旋钻井冲击功和机械钻速仿真研究,岩石力学与工程学报,2005 年 9 月:P3337-3341
    81.练章华,孟芜峰,唐波,刘平,反循环钻井钻头结构设计及其流场分析,石油机械,2003 年,增刊:P15-18
    82.Wang Rusheng,Yin Kun,Experimental Research on Reverse Circulation Constant Sampling Powerful Air Jetbit,第四届俄罗斯远东及亚太地区地质资源开发问题国际会议大会学术交流,2006.9
    83.Hall,et,al,Down-hole mud actuated hammer,United States Patent 5,396,965,Frank M.White.Fluid,Mechanics(Fifth,Edition),[M].北京:清华大学出版社,2004.
    84.Hustrulid W.A ,A Theoretical and Experiment Study of Percussive Drilling of Rock Int.J.Rock,Mech.Sci Vol.8,1972,
    85.Lundberg B.,Energy Transfer in Percussive Rock Destruction Int.J.Rock,Mech.Min.Sci、Vol.10,1973
    86.Stephen,C.Berube,How to Drill Rock with Percussion ,Tools Drilling,Vol.34:P9-10
    87.Yin Kun,Peng Jianming,Wang Qingyan,Wang Rusheng.Research on a hydraulic impact,hammer system for pipe-ramming,Proceedings of ASCE International Conference on Pipeline Engineering and Construction:New Pipeline Technologies Security and Safety,v2,2003:p1194-1200
    88.Peng Jianming,Yin Kun,Wang Maosen,Xu Huiwen,Su Jiju,Development of KCM130 Steerable Air-Powered Impact Mole for Directional Boring Proceedings of the ASCE International Conference on Pipeline Engineering and Construction:New Pipeline Technologies Secutity and Safety,v2,2003:p1367-1373

© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号

地址:北京市海淀区学院路29号 邮编:100083

电话:办公室:(+86 10)66554848;文献借阅、咨询服务、科技查新:66554700