Volume 47 Issue 2
Apr.  2019
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JIA Qifeng, NI Xiaoming, ZHAO Yongchao, CAO Yunxing. Fracture extension law of hydraulic fracture in coal with different structure[J]. COAL GEOLOGY & EXPLORATION, 2019, 47(2): 51-57. DOI: 10.3969/j.issn.1001-1986.2019.02.009
Citation: JIA Qifeng, NI Xiaoming, ZHAO Yongchao, CAO Yunxing. Fracture extension law of hydraulic fracture in coal with different structure[J]. COAL GEOLOGY & EXPLORATION, 2019, 47(2): 51-57. DOI: 10.3969/j.issn.1001-1986.2019.02.009
shu

Fracture extension law of hydraulic fracture in coal with different structure

  • 1. School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China;

  • 2. Collaborative Innovation Center of Coalbed Methane and Shale Gas for Central Plains Economic Region Henan Province, Jiaozuo 454000, China;

  • 3. College of Resources and Environment, Henan Polytechnic University, Jiaozuo 454000, China

Funds: 

National Science and Technology Major Project(2017ZX05064-002)

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  • Received Date: May 19, 2018
  • Published Date: April 24, 2019
    Graphical Abstract
    • Abstract
  • To find out the fracture extension law of coal hydraulic fracturing with different coal body structures can lay a foundation for reasonable well pattern deployment. Taking Shizhuang block of Qinshui basin as the research object, the fracture of coal core was observed, and four kinds of coal with fracture development degree were divided. Based on the theory of rock mass mechanics, the stress field calculation model of fracture tip and the judgment criterion of whether hydraulic fracture can pass through natural fracture in hydraulic fracturing process were established. According to the measured data of CBM wells, the reliability of theoretical analysis was verified, and the fracture extension law of hydraulic fracturing of coal with different coal body structures was obtained. The results show that the hydraulic fracture extension of two groups of natural fracture development is different before and after the induced stress is considered. With the increase of fracture length, the induced stress increases, and the hydraulic fracture extends from single direction to bidirectional direction. For a group of coal with natural fracture development, because the angle between the development direction of natural fracture and the direction of maximum principal stress is small, the extension direction of hydraulic fracture before and after considering induced stress is not obvious, and the overall extension tends to the natural fissure development direction. Hydraulic fractures always extend along the direction of maximum principal stress for granular occasional and powdery fractured coal. The research results provide a theoretical basis for the reasonable arrangement of the well network under different stress and fracture development in this area.
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    • References (17)
  • [1]
    陈勉. 页岩气储层水力裂缝转向扩展机制[J]. 中国石油大学学报(自然科学版),2013,37(5):88-94.

    CHEN Mian. Re-orientation and propagation of hydraulic fractures in shale gas reservoir[J]. Journal of China Univer-sity of Petroleum(Edition of Natural Science),2013,37(5):88-94.
    [2]
    王素玲,姜民政,刘合. 基于损伤力学分析的水力压裂三维裂缝形态研究[J]. 岩土力学,2011,32(7):2205-2210.

    WANG Suling,JIANG Minzheng,LIU He.Study of hydraulic fracturing morphology based on damage mechanics analysis[J]. Rock and Soil Mechanics,2011,32(7):2205-2210.
    [3]
    侯冰,谭鹏,陈勉,等. 致密灰岩储层压裂裂缝扩展形态试验研究[J]. 岩土工程学报,2016,38(2):219-225.

    HOU Bing,TAN Peng,CHEN Mian,et al. Experimental investigation on propagation geometry of hydraulic fracture in compact limestone reservoirs[J]. Chinese Journal of Geotechnical Engineering,2016,38(2):219-225.
    [4]
    WU X R,CARLSON A J. Weight functions and stress in-tensity factor solutions[M]. Oxford:Pergamon Press,1991.
    [5]
    潘林华,程礼军,陆朝晖,等. 页岩储层水力压裂裂缝扩展模拟进展[J]. 特种油气藏,2014,21(4):1-6.

    PAN Linhua,CHENG Lijun,LU Zhaohui,et al. Simulation of hydraulic fracture propagation in shale reservoir[J]. Special Oil and Gas Reservoirs,2014,21(4):1-6.
    [6]
    严成增,郑宏,孙冠华,等. 基于FDEM-Flow研究地应力对水力压裂的影响[J]. 岩土力学,2016,37(1):237-246.

    YAN Chengzeng,ZHENG Hong,SUN Guanhua,et al. Effect of in-situ stress on hydraulic fracturing based on FDEM-Flow[J]. Rock and Soil Mechanics,2016,37(1):237-246.
    [7]
    袁志刚. 煤岩体水力压裂裂缝扩展及对瓦斯运移影响研究[D]. 重庆:重庆大学,2014.
    [8]
    魏宏超,乌效鸣,李粮纲,等. 煤层气井水力压裂同层多裂缝分析[J]. 煤田地质与勘探,2012,40(6):20-23.

    WEI Hongchao,WU Xiaoming,LI Lianggang,et al. Multiple fractures in the same seam in hydraulic fracturing of CBM well[J]. Coal Geology & Exploration,2012,40(6):20-23.
    [9]
    倪小明,林然,张崇崇. 晋城矿区煤层气井连续多次压裂裂缝展布特征[J]. 中国矿业大学学报,2013,42(5):747-754.

    NI Xiaoming,LIN Ran,ZHANG Chongchong. Char-acteristics of fracture distribution after continuous and repetitive hydraulic fracturing of CBM wells in Jincheng mining area[J]. Journal of China University of Mining & Technology,2013,42(5):747-754.
    [10]
    赵立强,刘飞,王佩珊,等. 复杂水力裂缝网络延伸规律研究进展[J]. 石油与天然气地质,2014,35(4):562-569.

    ZHAO Liqiang,LIU Fei,WANG Peishan,et al. A review of creation and propagation of complex hydraulic fracture net-work[J]. Oil & Gas Geology,2014,35(4):562-569.
    [11]
    JOIE G. Numerical simulation of coupled fluid-low/geomeclianical behavior of tight gas reservoirs with stress sensitive permeability[J]. SPE,1997,39(5):1-15.
    [12]
    赵金洲,李勇明,王松,等. 天然裂缝影响下的复杂压裂裂缝网络模拟[J]. 天然气工业,2014,34(1):68-73.

    ZHAO Jinzhou,LI Yongming,WANG Song, et al. Simulation of a complex fracture network influenced by natural fractures[J]. Natural Gas Industry,2014,34(1):68-73.
    [13]
    张士诚,郭天魁,周彤,等. 天然页岩压裂裂缝扩展机理试验[J]. 石油学报,2014,35(3):496-503.

    ZHANG Shicheng,GUO Tiankui,ZHOU Tong,et al. Fracture propagation mechanism of hydraulic fracturing in natural shale[J]. Acta Petrolei Sinica,2014,35(3):496-503.
    [14]
    陈立超. 沁水盆地南部煤储层压裂裂缝延展机制及充填模式[D]. 武汉:中国地质大学(武汉),2016.
    [15]
    郭红玉,苏现波,夏大平,等. 煤储层渗透率与地质强度指标的关系研究及意义[J]. 煤炭学报,2010,35(8):1319-1322.

    GUO Hongyu,SU Xianbo,XIA Daping,et al. Relationship of the permeability and geological strength index(GSI) of coal reservoir and its significance[J]. Journal of China Coal Society,2010,35(8):1319-1322.
    [16]
    楼一珊. 岩石力学与石油工程[M]. 北京:石油工业出版社,2006.
    [17]
    陈峥嵘,刘书杰,张滨海,等. 沁水盆地北缘煤层气井地应力模型研究[J]. 煤炭科学技术,2018,46(10):136-142.

    CHEN Zhengrong,LIU Shujie,ZHANG Binhai,et al. Study on geostress model of coalbed methane wells in north edge of Qinshui basin[J]. Coal Science and Technology,2018,46(10):136-142.
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