渭北油田岩石性能参数下PDC钻井破岩研究
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摘要
PDC钻头几何结构复杂性、岩石材料差异性以及钻井工况的系统性,使得钻头切削破碎岩石的机理研究与钻头对地层的匹配适应性一直存在很大困难。基于渭北油田取心所测得岩石力学参数,获得了该区块的H-J-C岩石响应模型参数,通过三维CAD软件和有限元软件建立PDC钻头破岩的三维非线性动态仿真模型,开展PDC钻头在该区块的破岩规律研究,并深入研究钻头破岩过程中的响应规律。结果表明,该区块下钻头垂向加速度为0. 1 m/s~2,钻头垂向速度稳定在0. 006 m/s,破岩功呈周期性变化、总体上升的规律趋势。该计算方法针对性较强,计算灵活便捷,为后期钻头—地层的适配性研究提供了技术手段。
The complexity of PDC bit geometries,the difference of rock materials and the systematicness of drilling conditions have caused great difficulties in the research of the mechanism of bit cutting or breaking rocks and bit's matching adaptability to the formation. Based on the rock mechanics parameters measured by coring in Weibei Oilfield,the parameters of the H-J-C rock response model of the block were obtained. Through 3 D mapping software and finite element software,a 3 D nonlinear dynamic simulation model of PDC bit breaking rock was established to study the rock breaking regularity of PDC bit in this block and to further study the response law of bit breaking rock. The results showed that the vertical acceleration of the bit was 0. 1 m/s~2,and the vertical speed of the drill bit was stable at 0. 006 m/s. The calculation method was more pertinent and flexible and convenient to calculate. It provided a technical means for the research of bit formation suitability in the later period.
The complexity of PDC bit geometries,the difference of rock materials and the systematicness of drilling conditions have caused great difficulties in the research of the mechanism of bit cutting or breaking rocks and bit's matching adaptability to the formation. Based on the rock mechanics parameters measured by coring in Weibei Oilfield,the parameters of the H-J-C rock response model of the block were obtained. Through 3 D mapping software and finite element software,a 3 D nonlinear dynamic simulation model of PDC bit breaking rock was established to study the rock breaking regularity of PDC bit in this block and to further study the response law of bit breaking rock. The results showed that the vertical acceleration of the bit was 0. 1 m/s~2,and the vertical speed of the drill bit was stable at 0. 006 m/s. The calculation method was more pertinent and flexible and convenient to calculate. It provided a technical means for the research of bit formation suitability in the later period.
引文
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[11]祝效华,罗衡,贾彦杰.考虑岩石疲劳损伤的空气冲旋钻井破岩数值模拟研究[J].岩石力学与工程学报,2012,31(4):754-761.Zhu Xiaohua,Luo Heng,Jia Yanjie. Numerical simulation of rock fragmentation by air-drilling considering rock fatigue damage[J].Chinese Journal of Rock Mechanics and Engineering,2012,31(4):754-761.
[12]李士斌,窦同伟,董德仁,等.欠平衡钻井井底岩石的应力状态[J].石油学报,2011,32(2):329-334.Li Shibin,Dou Tongwei,Dong Deren,et al. Stress state of underbalanced drilling wellbore rock[J]. Journal of Petroleum,2011,32(2):329-334.
[13]吴冬宇,殷琨,甘心,等.两种贯通潜孔锤反循环钻头应用效果及理论分析[J].吉林大学学报(地球科学版),2017,47(1):197-202.Wu Dongyu,Yin Kun,Gan Xin,et al. Application effect and theoretical analysis of two kinds of through DTH hammer back circulation bit[J]. Journal of Jilin University(Earth Science Edition),2017,47(1):197-202.
[14]陈晓华,王翔,杨大足,等.东胜气田致密含砾砂岩地层钻头选型[J].石油机械,2016,44(4):7-11.Chen Xiaohua,Wang Xiang,Yang Dazu,et al. Drill bit selection of dense conglomerate sandstone in Dongsheng Gas Field[J]. Oil Machinery,2016,44(4):7-11.
[15]陈晓华.基于机械比能理论优化钻井效率新方法在大牛地气田的应用[J].钻采工艺,2017,40(4):28-31.Chen Xiaohua. The application of a new method of optimizing drilling efficiency based on mechanical specific energy theory in Daniudi gas field[J]. Drilling and production technology,2017,40(4):28-31.
[2]王传留,居培,高晓亮.煤矿井下定向钻进用新型PDC钻头[J].金刚石与磨料磨具工程,2016,36(6):74-78.Wang Chuanliu,Ju Pei,Gao Xiaoliang. New PDC bit for downhole directional drilling in coal mines[J]. Diamond&Abrasives Engineering,2016,36(6):74-78.
[3]张晓东,张毅,苟如意,等.基于岩石性能试验的冲旋钻井钻齿破岩仿真[J].石油钻探技术,2014,42(1):105-110.Zhang Xiaodong,Zhang Yi,Gou Ruyi,et al. Rock drilling simulation of punching drilling based on rock performance test[J]. Oil Drilling Technology,2014,42(1):105-110.
[4]刘增华,黄亚辉,刘航铭,等.基于ANSYS/Ls-dyna的PDC切削齿角度模拟分析[J].机械工程师,2016(12):107-108.Liu Zenghua,Huang Yahui,Liu Hangming,et al. Based on ANSYS/Ls-dyna PDC cutter angle simulation analysis[J]. Mechanical Engineer,2016(12):107-108.
[5]李琴,刘永升,黄志强,等. PDC钻头切削破岩机理及数值模拟研究[J].机械科学与技术,2016,35(2):203-209.Li Qin,Liu Yongsheng,Huang Zhiqiang,et al. Mechanism and numerical simulation of rock cutting by PDC bit[J]. Mechanical Science and Technology,2016,35(2):203-209.
[6]邓敏凯,伍开松,胡伟. PDC钻头切削齿破岩仿真与试验分析[J].石油机械,2014,42(1):10-13.Deng Minkai,Wu Kaisong,Hu Wei. Simulation and experimental analysis of rock breaking of PDC bit cutters[J]. Petroleum Machinery,2014,42(1):10-13.
[7]李勇. PDC钻头切削齿破岩过程热分析与仿真[D].成都:西南石油大学,2012.
[8]廖飞龙. PDC齿切削破岩损伤规律研究[D].成都:西南石油大学,2014.
[9]刘永升.仿生PDC切削齿结构设计与破岩机理研究[D].成都:西南石油大学,2015.
[10]况雨春,彭亚洲,张雨婷. PDC全钻头破岩数值模拟及试验研究[J].石油机械,2015,43(9):10-13.Kuang Yuchun,Peng Yazhou,Zhang Yuting. Numerical simulation and experimental study on PDC full bit rock breaking[J]. Petroleum Machinery,2015,43(9):10-13.
[11]祝效华,罗衡,贾彦杰.考虑岩石疲劳损伤的空气冲旋钻井破岩数值模拟研究[J].岩石力学与工程学报,2012,31(4):754-761.Zhu Xiaohua,Luo Heng,Jia Yanjie. Numerical simulation of rock fragmentation by air-drilling considering rock fatigue damage[J].Chinese Journal of Rock Mechanics and Engineering,2012,31(4):754-761.
[12]李士斌,窦同伟,董德仁,等.欠平衡钻井井底岩石的应力状态[J].石油学报,2011,32(2):329-334.Li Shibin,Dou Tongwei,Dong Deren,et al. Stress state of underbalanced drilling wellbore rock[J]. Journal of Petroleum,2011,32(2):329-334.
[13]吴冬宇,殷琨,甘心,等.两种贯通潜孔锤反循环钻头应用效果及理论分析[J].吉林大学学报(地球科学版),2017,47(1):197-202.Wu Dongyu,Yin Kun,Gan Xin,et al. Application effect and theoretical analysis of two kinds of through DTH hammer back circulation bit[J]. Journal of Jilin University(Earth Science Edition),2017,47(1):197-202.
[14]陈晓华,王翔,杨大足,等.东胜气田致密含砾砂岩地层钻头选型[J].石油机械,2016,44(4):7-11.Chen Xiaohua,Wang Xiang,Yang Dazu,et al. Drill bit selection of dense conglomerate sandstone in Dongsheng Gas Field[J]. Oil Machinery,2016,44(4):7-11.
[15]陈晓华.基于机械比能理论优化钻井效率新方法在大牛地气田的应用[J].钻采工艺,2017,40(4):28-31.Chen Xiaohua. The application of a new method of optimizing drilling efficiency based on mechanical specific energy theory in Daniudi gas field[J]. Drilling and production technology,2017,40(4):28-31.