地应力对爆炸压裂影响规律的数值模拟研究

徐鹏, 刘新云, 石李保

徐鹏, 刘新云, 石李保. 地应力对爆炸压裂影响规律的数值模拟研究[J]. 石油钻探技术, 2013, 41(1): 65-69. DOI: 10.3969/j.issn.1001-0890.2013.01.013
引用本文: 徐鹏, 刘新云, 石李保. 地应力对爆炸压裂影响规律的数值模拟研究[J]. 石油钻探技术, 2013, 41(1): 65-69. DOI: 10.3969/j.issn.1001-0890.2013.01.013
Xu Peng, Liu Xinyun, Shi Libao. Numerical Simulation for the Effect of Ground Stress on Explosive Fracturing[J]. Petroleum Drilling Techniques, 2013, 41(1): 65-69. DOI: 10.3969/j.issn.1001-0890.2013.01.013
Citation: Xu Peng, Liu Xinyun, Shi Libao. Numerical Simulation for the Effect of Ground Stress on Explosive Fracturing[J]. Petroleum Drilling Techniques, 2013, 41(1): 65-69. DOI: 10.3969/j.issn.1001-0890.2013.01.013

地应力对爆炸压裂影响规律的数值模拟研究

详细信息
    作者简介:

    徐鹏(1982-),男,山东淄博人,2005毕业于潍坊学院计算机科学技术专业,2011年获中国石油大学(华东)油气井工程专业博士学位,工程师,主要从事油气井岩石力学方面的研究工作。联系方式(010)83593088,xupg1982@163.com。

  • 中图分类号: TE357.1+4

Numerical Simulation for the Effect of Ground Stress on Explosive Fracturing

  • 摘要: 为了揭示地应力场对井内爆炸压裂作用下裂缝形成及分布的影响规律,进行了井内爆炸压裂室内模拟试验。基于弹塑性损伤理论建立了井内爆炸压裂数值计算模型,在借助试验结果验证模型准确性的基础上,研究探讨了地应力场对爆炸压裂作用下裂缝扩展规律的影响。研究结果表明:试验条件下,炮眼内炸药爆炸后并未对炮眼造成粉碎性破坏,且裂缝沿曲线扩展;爆炸压裂作用下井壁围岩中将产生长而宽的主裂缝和短而细的次裂缝;主裂缝扩展方向受地应力场控制,垂直于最小水平地应力方向;不同地应力场条件下,裂缝扩展范围及密度亦随之发生改变。 研究表明,准确掌握地应力大小及方位,有利于控制主裂缝的扩展及分布形态。
    Abstract: In order to reveal the influence of ground stress on the fracture and propagation during explosive fracturing,the lab experiment of explosive fracturing was carried out,and the fracturing numerical model established based on elastic-plastic-damage theory.By means of the testing result and its accuracy verification of the numerical model,the influence of ground stress on fracture and distribution in explosive fracturing was studied.The study results show that the explosive did not crush the surrounding rock of the borehole,and cracks created and extended in curved forms;the primary long and wide cracks and secondary short and narrow cracks are formed by explosive fracturing in surrounding rocks of borehole,the propagation of primary cracks,which are perpendicular to the minimum horizontal in-situ stress direction,is controlled by ground stress;the length and quantity of cracks also vary with different ground stress.Consequently,learning about the magnitude and direction of the ground stress is helpful for the control of propagation and distribution of the primary cracks in explosive fracturing.
  • [1] 丁雁生,陈力,谢燮,等.低渗透油气田"层内爆炸"增产技术研究[J].石油勘探与开发,2001,28(2):90-96. Ding Yansheng,Chen Li,Xie Xie,et a1.On the stimulation of"exploding in fractures"in low permeability reservoir[J].Petroleum Exploration and Development,2001,28(2):90-96.
    [2] 李道品.低渗透油田概念及其在我国的分布[M].北京:石油工业出版社,1998:1-10. Li Daopin.Conception and distribution of low permeability oilfield in China[M].Beijing:Petroleum Industry Press,1998:1-10.
    [3] 杨俊杰.低渗透油气藏勘探开发技术[M].北京:石油工业出版社,1993:23-45. Yang Junjie.Low permeability oil and gas reservoir exploration and development technology[M].Beijing:Petroleum Industry Press,1993:23-45.
    [4] 林英松,蒋金宝,朱天玉,等.爆炸载荷对水泥试样损伤破坏规律研究[J].中国石油大学学报:自然科学版,2006,30(3):55-58. Lin Yingsong,Jiang Jinbao,Zhu Tianyu,et al.Research of cement sample’s damage and fracture by exploding load[J].Journal of China University of Petroleum:Edition of Natural Science,2006,30(3):55-58.
    [5] 程远方,寇永强,徐鹏,等.水泥试样爆炸压裂模拟试验[J].中国石油大学学报:自然科学版,2010,34(5):69-72. Cheng Yuanfang,Kou Yongqiang,Xu Peng,et al.Explosive fracturing simulation test of cement samples[J].Journal of China University of Petroleum:Edition of Natural Science,2010,34(5):69-72.
    [6] 徐鹏,程远方,张晓春,等.水泥试样爆炸压裂试验及裂纹分形评价[J].爆炸与冲击,2011,31(2):179-183. Xu Peng,Cheng Yuanfang,Zhang Xiaochun,et al.Fractal evaluation of explosive fracturing simulation test on cement samples[J].Explosion and Shock Waves,2011,31(2):179-183.
    [7] 蒋金宝,林英松,张瑞英.激波掠过后岩石相对损伤度与裂缝渗透率关系模拟实验研究[J].石油学报,2009,30(6):947-950. Jiang Jinbao,Lin Yingsong,Zhang Ruiying.Simulation research on relationship between relative damage of rock and fracture permeability after exploding wave bypassing[J].Acta Petrolei Sinica,2009,30(6):947-950.
    [8] 徐鹏,程远方,刘丹,等.爆炸压裂下围压对井壁破碎效果的影响[J].石油钻探技术,2009,37(6):22-25. Xu Peng,Cheng Yuanfang,Liu Dan,et al.The effects of ambient pressure on wellbore crushing effect under explosive fracturing[J].Petroleum Drilling Techniques,2009,37(6):22-25.
    [9] 王京印,程远方,刘芳,等.围压对井内爆炸压裂损伤破坏尺度影响的数值模拟研究[J].石油钻探技术,2011,39(4):81-86. Wang Jingyin,Cheng Yuanfang,Liu Fang,et al.Numerical simulation for the influence of confined pressure on the damage scale of explosive fracturing inside well bore[J].Petroleum Drilling Techniques,2011,39(4):81-86.
    [10] 肖正学,张志呈,李端明.初始应力场对爆破效果的影响[J].煤炭学报,1996,21(5):497-500. Xiao Zhengxue,Zhang Zhicheng,Li Duanming.The influence of initial stress field on blasting[J].Journal of China Coal Society,1996,21(5):497-500.
    [11] 戴俊,钱七虎.高地应力条件下的巷道崩落爆破参数[J].爆炸与冲击,2007,27(5):272-277. Dai Jun,Qian Qihu.Break blasting parameters for driving a roadway in rock with high residual stress[J].Explosion and Shock Waves,2007,27(5):272-277.
    [12] 邵国建,王东升.岩体初始地应力场对地下洞室围岩变形及应力的影响[J].河海大学学报,1999,27(6):82-82. Shao Guojian,Wang Dongsheng.Influence of initial stress field of rock masses on deformations and stresses of surrounding rock of underground openings[J].Journal of Hohai University,1999,27(6):82-82.
    [13] 林英松,蒋金宝,孙丰成,等.爆炸技术与低渗透油气藏增产[J].钻采工艺,2007,30(5):48-52. Lin Yingsong,Jiang Jinbao,Sun Fengcheng,et al.Exploding technology and low permeability reservoir improvement[J].Drilling Production Technology,2007,30(5):48-52.
    [14] 刘向君,罗平亚,孟英峰.地应力场对井眼轨迹设计及稳定性的影响研究[J].天然气工业,2004,24(9):57-59. Liu Xiangjun,Luo Pingya,Meng Yingfeng.Influence of ground stress field on borehole trajectory design and well-face stability[J].Natural Gas Industry,2004,24(9):57-59.
    [15] 陈德春,吴晓东,潘志华,等.爆燃压裂油井产能电模拟实验评价[J].石油钻探技术,2011,39(6):73-77. Chen Dechun,Wu Xiaodong,Pan Zhihua,et al.Evaluation of exploding frauture wells productivity using electric analog experiment[J].Petroleum Drilling Techniques,2011,39(6):73-77.
    [16] 谢和平,陈忠辉.岩石力学[M].北京:科学出版社,2004:199-220. Xie Heping,Chen Zhonghui.Rock mechanics[M].Beijing:Science Press,2004:199-220.
    [17] 杨军.岩石爆破理论模型及数值计算[M].北京:科学出版社,1999:171-176. Yang Jun.Theoretical model and numerical calculation of rock blasting[M].Beijing:Science Press,1999:171-176.
计量
  • 文章访问数:  3069
  • HTML全文浏览量:  70
  • PDF下载量:  3888
  • 被引次数: 0
出版历程
  • 收稿日期:  2012-05-01
  • 修回日期:  2012-10-07
  • 刊出日期:  1899-12-31

目录

    /

    返回文章
    返回