• 中文核心期刊
  • 中国科技核心期刊
  • RCCSE中国核心学术期刊

单孔预置缝槽控制压裂裂缝扩展规律模拟研究

薛伟超, 李艳增

薛伟超, 李艳增. 单孔预置缝槽控制压裂裂缝扩展规律模拟研究[J]. 煤矿安全, 2019, 50(12): 158-162,169.
引用本文: 薛伟超, 李艳增. 单孔预置缝槽控制压裂裂缝扩展规律模拟研究[J]. 煤矿安全, 2019, 50(12): 158-162,169.
XUE Weichao, LI Yanzeng. Simulation Study on Crack Propagation Law of Single Hole Pre-fitting Slot Controlling Fracturing[J]. Safety in Coal Mines, 2019, 50(12): 158-162,169.
Citation: XUE Weichao, LI Yanzeng. Simulation Study on Crack Propagation Law of Single Hole Pre-fitting Slot Controlling Fracturing[J]. Safety in Coal Mines, 2019, 50(12): 158-162,169.

单孔预置缝槽控制压裂裂缝扩展规律模拟研究

Simulation Study on Crack Propagation Law of Single Hole Pre-fitting Slot Controlling Fracturing

  • 摘要: 以松藻矿区为例,采用RFPA软件,模拟分析单孔定向预置缝槽控制压裂煤层在不同缝槽长度、不同缝槽与地应力分量夹角条件下水压裂缝的扩展规律。研究表明:预置缝槽钻孔能够有效降低钻孔附近煤层水力压裂的破裂压力和裂缝稳定扩展压力并增大裂缝扩展范围,裂缝范围最大可提高至常规钻孔的2倍。
    Abstract: Taking Songzao Mining Area as an example, RFPA software was used to simulate and analyze the propagation laws of hydraulic cracks under different conditions of different slot lengths and angles between different slots and ground stress component in the coal seams. The research shows that the pre-fitting slot can effectively reduce the cracking pressure and the fracture stability expansion pressure of the coal seam hydraulic fracturing near the borehole. Besides, it can also increase the crack extension range, even 2 times of the conventional drilling hydraulic fracturing.
  • [1] 黄炳香,赵兴龙,陈树亮,等.坚硬顶板水压致裂控制理论与成套技术[J].岩石力学与工程学报,2017,36(12):2954-2970.
    [2] 黄炳香,程庆迎,刘长友,等.煤岩体水力致裂理论及其工艺技术框架[J].采矿与安全工程学报,2011,28(2):167-173.
    [3] 薛伟超.岩石水力致裂的孔隙压力(梯度)作用机制研究[D].徐州:中国矿业大学,2014.
    [4] 王耀锋,薛伟超,李艳增,等.诱导应力场对井下多孔压裂缝网形成的导控作用研究[J].煤矿安全,2018, 49(11):10-15.
    [5] 黄炳香,王友壮.顶板钻孔割缝导向水压裂缝扩展的现场试验[J].煤炭学报,2015,40(9):2002-2008.
    [6] 陈德敏.基于小曲率拐弯钻机的井下分段压裂技术[J].煤矿安全,2018,49(5):83-86.
    [7] 胡胜勇.水力喷射钻孔定向压裂技术试验研究[J].钻采工艺,2014,37(5):59-62.
    [8] 李艳增.导向槽定向水力压穿增透技术研究与应用[J].煤炭科学技术,2016,44(4):50-54.
    [9] 王友壮.岩体钻孔预割缝水力致裂的定向起裂条件研究[D].徐州:中国矿业大学,2014.
    [10] 王耀锋,何学秋,王恩元,等.水力化煤层增透技术研究进展及发展趋势[J].煤炭学报,2014,39(10):1945-1955.
    [11] 王志军,连传杰,王阁.岩石定向水力压裂导控的数值分析[J].岩土工程学报,2013,35(S2):320-324.
    [12] 王志军,张瑞林,张森,等.含瓦斯煤体定向水力压裂裂隙导控的数值分析[J].河南理工大学学报(自然科学版),2013,32(4):373-379.
    [13] 程亮.薄及中厚软煤层水力压裂煤岩损伤机理及瓦斯运移规律[D].重庆:重庆大学,2016.
    [14] 雷毅.松软煤层井下水力压裂致裂机理及应用研究[D].北京:煤炭科学研究总院,2014.
    [15] Li Z, Li L, Li M, et al. A numerical investigation on the effects of rock brittleness on the hydraulic fractures in the shale reservoir[J]. Journal of Natural Gas Science and Engineering, 2018, 50: 22-32.
    [16] Tang CA, Tham LG, Lee PKK, et al. Coupled analysis of flow, stress and damage (FSD) in rock failure[J]. International Journal of Rock Mechanics and Mining Sciences, 2002, 39(4): 477-489.
    [17] Chen X, Yu J, Tang CA, et al. Experimental and Numerical Investigation of Permeability Evolution with Damage of Sandstone Under Triaxial Compression[J]. Rock Mechanics and Rock Engineering, 2017, 50(6):1529-1549.
    [18] 冷雪峰,唐春安,李连崇,等.非均匀孔隙压力下水压致裂的数值试验[J].东北大学学报,2003,24(3):288-291.
计量
  • 文章访问数:  68
  • HTML全文浏览量:  0
  • PDF下载量:  0
  • 被引次数: 0
出版历程
  • 发布日期:  2019-12-19

目录

    /

    返回文章
    返回