煤矿井下水力压裂范围微震监测技术及其影响因素

闫江平, 庞长庆, 段建华, 段建强, 白晓燕

闫江平, 庞长庆, 段建华, 段建强, 白晓燕. 煤矿井下水力压裂范围微震监测技术及其影响因素[J]. 煤田地质与勘探, 2019, 47(S1): 92-97. DOI: 10.3969/j.issn.1001-1986.2019.S1.018
引用本文: 闫江平, 庞长庆, 段建华, 段建强, 白晓燕. 煤矿井下水力压裂范围微震监测技术及其影响因素[J]. 煤田地质与勘探, 2019, 47(S1): 92-97. DOI: 10.3969/j.issn.1001-1986.2019.S1.018
shu
YAN Jiangping, PANG Changqing, DUAN Jianhua, DUAN Jianqiang, BAI Xiaoyan. Microseismic monitoring of underground hydraulic fracturing range in coal seam and analysis of influencing factors[J]. COAL GEOLOGY & EXPLORATION, 2019, 47(S1): 92-97. DOI: 10.3969/j.issn.1001-1986.2019.S1.018
Citation: YAN Jiangping, PANG Changqing, DUAN Jianhua, DUAN Jianqiang, BAI Xiaoyan. Microseismic monitoring of underground hydraulic fracturing range in coal seam and analysis of influencing factors[J]. COAL GEOLOGY & EXPLORATION, 2019, 47(S1): 92-97. DOI: 10.3969/j.issn.1001-1986.2019.S1.018
shu

 

煤矿井下水力压裂范围微震监测技术及其影响因素

  • 1. 神华神东煤炭集团有限责任公司布尔台煤矿，内蒙古鄂尔多斯 017000;

  • 2. 中煤科工集团西安研究院有限公司，陕西 西安 710077

基金项目: 

国家重点研发计划任务（2017YFC0804103-3）；中煤科工集团有限公司科技创新基金项目（2017MS007）

详细信息
    作者简介:

    闫江平,1988年生,男,陕西延安人,助理工程师,研究方向为矿山地质与测量.E-mail:345195526@qq.com

  • 中图分类号: TD166

Microseismic monitoring of underground hydraulic fracturing range in coal seam and analysis of influencing factors

  • 1. Shenhua Shendong Coal Group Co., Ltd., Ordos 017000, China;

  • 2. Xi'an Research Institute Co. Ltd., China Coal Technology and Engineering Group Corp., Xi'an 710077, China

Funds: 

National Key R&D Program of China(2017YFC0804103-3)

摘要

    摘要
  • 摘要: 水力压裂是煤层气开发过程中增透增产的重要技术，压裂影响范围直接关系到水力压裂方案的设计和优化，而井下煤层水力压裂范围监测是亟待解决的技术难题。为了获取井下煤层水力压裂影响范围，根据压裂时煤层及其围岩的物性变化特征，采用井下微震监测技术对某煤矿3个煤层气井的压裂影响范围开展了监测，并且利用传统的钻孔观测法对监测结果进行了检验。结果表明：利用井下微震监测技术能够获得煤层钻孔水力压裂破坏范围，但是由于煤层较软，地震波衰减大，压裂区围岩或煤层破碎严重不利于裂隙的产生和扩展等，接收到的微震事件较少，因此微震监测结果圈定的压裂破坏范围比钻孔观测法小。
    Abstract: Hydraulic fracturing is an important technology for increasing permeability and productivity in the process of CBM development. The influence range of fracturing is directly related to the design and optimization of hydraulic fracturing scheme. As one of the key technologies, monitoring the sweep range of underground hydraulic fracturing in coal seam is a difficult technical problem to be solved urgently. In order to obtain the influence range of underground hydraulic fracturing in coal seam, according to the physical characteristics of coal seam and surrounding rock during fracturing, microseismic monitoring of fracturing influence range of three boreholes in a coal mine was carried out by using underground microseismic monitoring technology. The traditional borehole observation method was used to verify the monitoring results. The results show that the underground microseismic monitoring technology can obtain the fracturing damage range, but the fracturing damage range delineated by microseismic monitoring is smaller than that by borehole observation method. It is due to the soft coal seam and the large attenuation of seismic wave. The fractured surrounding rock or coal seam is seriously fractured, which is not conducive to the generation and expansion of fractures. So there fewer microseismic events are received.
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出版历程
  • 收稿日期:  2019-07-14
  • 发布日期:  2019-09-19

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