爆燃压裂起裂模型常见问题分析与修正
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摘要
目前爆燃压裂起裂常用模型单位不统一、物理意义模糊、模拟功能范围窄,导致模型无法正常计算或者有关参数无法求解。通过公式单位推导与物理意义分析,对爆燃压裂峰值压力简易模型、挤入液体模型中的单位不统一问题和压力与时间主模型、挤入液体模型、挤入气体模型和裂缝与时间关系模型物理意义模糊问题进行了修正;同时根据牛顿第二定律和材料力学方程,按照压力波在液柱中的传递过程进行推导建立了应用范围更广的压挡液运动新模型。现场应用结果表明,压挡液运动新模型具有较高的计算精度,模拟计算结果与现场测试数据吻合较好,可为爆燃压裂参数预测和安全控制提供参考。
Some problems exist in the commonly used models of deflagration fracturing crack initiation,including multiple units,fuzzy physical meanings and narrow analog usage range,which cause failures on model calculation or parameters solution.Corrections have been done to address the multiple units in the simple deflagration peak pressure model and liquid injection model,and the fuzzy physical meanings of pressure-time main model,liquid injection model,gas injection model and crack-time relationship model by means of formula derivation and physical meaning analysis.Meanwhile,a new pressurized fluid movement model with wider application scope has been derived and established by Newton's second laws and material mechanics equation according to the transformation of pressure wave in liquid column.The field applications show that this model has high calculation precision,and the simulation result tallies with field data properly,so it can provide reference to parameter prediction and safety control during deflagration fracturing.
Some problems exist in the commonly used models of deflagration fracturing crack initiation,including multiple units,fuzzy physical meanings and narrow analog usage range,which cause failures on model calculation or parameters solution.Corrections have been done to address the multiple units in the simple deflagration peak pressure model and liquid injection model,and the fuzzy physical meanings of pressure-time main model,liquid injection model,gas injection model and crack-time relationship model by means of formula derivation and physical meaning analysis.Meanwhile,a new pressurized fluid movement model with wider application scope has been derived and established by Newton's second laws and material mechanics equation according to the transformation of pressure wave in liquid column.The field applications show that this model has high calculation precision,and the simulation result tallies with field data properly,so it can provide reference to parameter prediction and safety control during deflagration fracturing.
引文
[1]张廷汉,秦发动.高能气体压裂的初步研究[J].西安石油学院学报,1986,1(2):1-12.
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[13]吴晋军,喻鹏,周培尧,等.沁水地区煤层气储层多脉冲压裂技术试验及应用研究[J].钻采工艺,2015,38(3):52-55,12.WU Jinjun,YU Peng,ZHOU Peiyao,et al.Testing and application of multi-pulse fracturing technology in Qinshui coalbed methane reservoir[J].Drilling&Production Technology,2015,38(3):52-55,12.
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[15]陈德春,吴晓东,李海波,等.油气层爆燃压裂裂缝动态延伸模型[J].中国石油大学学报(自然科学版),2011,35(4):103-107.CHEN Dechun,WU Xiaodong,LI Haibo,et al.Fracture dynamic extending model for oil formation exploding fracturing[J].Journal of China University of Petroleum(Edition of Natural Science),2011,35(4):103-107.
[16]吴飞鹏,蒲春生,吴波.高能气体压裂中压挡液柱运动解析模型研究[J].石油钻采工艺,2009,31(3):82-84,89.WU Feipeng,PU Chunsheng,WU Bo.Study on kinematics model of medium pressure piezoresistive liquid column for high energy gas fracturing[J].Oil Drilling&Production Technology,2009,31(3):82-84,89.
[17]吴飞鹏,蒲春生,吴波.燃爆压裂中压挡液柱运动规律的动力学模型[J].爆炸与冲击,2010,30(6):633-640.WU Feipeng,PU Chunsheng,WU Bo.A dynamic model of the pressurized liquid column movement in the high energy gas fracturing process[J].Explosion and Shock Waves,2010,30(6):633-640.
[2]张廷汉,秦发动.高能气体压裂在我国的研究和进展[J].石油钻采工艺,1987,9(5):63-69.
[3]李璗,薛中天,刘发喜.七里村油矿高能气体压裂效果的初步分析[J].西安石油学院学报,1988,3(2):7-14.LI Dang,XUE Zhongtian,LIU Faxi.Preliminary analysis of high energy gas fracture effect at Qili village oil field[J].Journal of Xi'an Petroleum Institute,1988,3(2):7-14.
[4]秦发动.聚能效应在高能气体压裂中的应用研究[J].西安石油学院学报,1992,7(3):17-22.QIN Fadong.Research on the application of accumulated energy effect of high energy gas fracturing[J].Journal of Xi'an Petroleum Institute,1992,7(3):17-22.
[5]刘发喜,秦发动.高能气体压裂施工工艺及其发展趋势[J].石油钻采工艺,1993,15(2):63-69.
[6]秦发动,吴晋军.我院高能气体压裂技术十年发展综述[J].西安石油学院学报,1997,12(3):14-17,52.QIN Fadong,WU Jinjun.Development of high energy gas fracturing(HEGF)in the past ten years[J].Journal of Xi'an Petroleum Institute,1997,12(3):14-17,52.
[7]张强德,赵万祥,王法轩.高能气体压裂技术[J].断块油气田,1994,1(3):50-60.ZHANG Qiangde,ZHAO Wanxiang,WANG Faxuan.The high-energy gas fracturing technology[J].Fault-Block Oil and Gas Field,1994,1(3):50-60.
[8]王香增.多级脉冲爆燃压裂破岩机理研究[J].石油矿场机械,2007,36(4):10-12.WANG Xiangzeng.Mechanism study of multistage pulse conflagration compression Fracture[J].Oil Field Equipment,2007,36(4):10-12.
[9]王爱华,李璗,赵锋洛.用高能气体压裂模型研究裂缝条数[J].断块油气田,2000,7(5):56-59.WANG Aihua,LI Dang,ZHAO Fengluo.The study of number of fractures using high energy gas fracturing model[J].Fault-Block Oil and Gas Field,2000,7(5):56-59.
[10]吴晋军,廖红伟,张杰.水平井液体药高能气体压裂技术试验应用研究[J].钻采工艺,2007,30(1):50-53,146.WU Jinjun,LIAO Hongwei,ZHANG Jie.Study and application of liquid power high energy gas fracturing technology in horizontal well[J].Drilling&Production Technology,2007,30(1):50-53,146.
[11]吴飞鹏.高能气体压裂过程动力学模型与工艺技术优化决策研究[D].青岛:中国石油大学(华东),2009.WU Feipeng.The kinetic model and the technology optimization of HEGF process[D].Qingdao:China University of Petroleum,2009.
[12]吴飞鹏,蒲春生,任山,等.燃爆诱导酸化压裂在川西气井中的先导试验[J].中国石油大学学报(自然科学版),2008,32(6):101-103,108.WU Feipeng,PU Chunsheng,REN Shan,et al.Pilot test of blasting-acid fracturing complex technology in gas wells of western Sichuan[J].Journal of China University of Petroleum(Edition of Natural Science),2008,32(6):101-103,108.
[13]吴晋军,喻鹏,周培尧,等.沁水地区煤层气储层多脉冲压裂技术试验及应用研究[J].钻采工艺,2015,38(3):52-55,12.WU Jinjun,YU Peng,ZHOU Peiyao,et al.Testing and application of multi-pulse fracturing technology in Qinshui coalbed methane reservoir[J].Drilling&Production Technology,2015,38(3):52-55,12.
[14]李楠.浅层煤储层多脉冲高能气体压裂技术试验及应用研究[J].内蒙古石油化工,2015,41(7):78-80.LI Nan.Test and application of high energy gas fracturing technology of multi-pulse shallow coal reservoir[J].Inner Mongulia Petrochemical Industry,2015,41(7):78-80.
[15]陈德春,吴晓东,李海波,等.油气层爆燃压裂裂缝动态延伸模型[J].中国石油大学学报(自然科学版),2011,35(4):103-107.CHEN Dechun,WU Xiaodong,LI Haibo,et al.Fracture dynamic extending model for oil formation exploding fracturing[J].Journal of China University of Petroleum(Edition of Natural Science),2011,35(4):103-107.
[16]吴飞鹏,蒲春生,吴波.高能气体压裂中压挡液柱运动解析模型研究[J].石油钻采工艺,2009,31(3):82-84,89.WU Feipeng,PU Chunsheng,WU Bo.Study on kinematics model of medium pressure piezoresistive liquid column for high energy gas fracturing[J].Oil Drilling&Production Technology,2009,31(3):82-84,89.
[17]吴飞鹏,蒲春生,吴波.燃爆压裂中压挡液柱运动规律的动力学模型[J].爆炸与冲击,2010,30(6):633-640.WU Feipeng,PU Chunsheng,WU Bo.A dynamic model of the pressurized liquid column movement in the high energy gas fracturing process[J].Explosion and Shock Waves,2010,30(6):633-640.
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