| 松软低透气性煤层跟管钻进及压裂抽采技术研究分析 |
| 投稿时间：2014-03-31 修订日期：2014-03-31 点此下载全文 |
| 引用本文：冀前辉.松软低透气性煤层跟管钻进及压裂抽采技术研究分析[J].钻探工程,2014,41(11):28-30，56.JI Qian-hui. Research and Analysis on Drilling-while-casing and Fracturing Drainage in Soft and Low Permeability Coal Seams[J]. Drilling Engineering, 2014,41(11):28-30，56. |
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| 中文摘要:针对我国松软低透气性煤层瓦斯抽采难题，提出了采用跟管钻进和水力压裂技术提高松软煤层钻孔深度和煤层透气性，通过布孔设计、应力分析论证了该方法的施工可行性，讨论了该方法的施工步骤。该技术有望成为解决松软低透气性煤层瓦斯抽采难题的新工艺方法。 |
| 中文关键词:松软低透气性煤层 瓦斯抽采 跟管钻进 水力压裂 |
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| Research and Analysis on Drilling-while-casing and Fracturing Drainage in Soft and Low Permeability Coal Seams |
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| Abstract:In order to improve the drilling depth and the permeability of soft and low permeability coal seams, a new technique including underground casing-while-drilling and horizontal hydraulic fracturing is proposed. The paper discusses the feasibility and execution steps of this technology based on the borehole design and stress analysis. It is possible that this technique becomes a new technology to solve the gas drainage difficulties in soft and low permeability coal seams. |
| keywords:soft and low permeability coal seams gas drainage casing while drilling hydraulic fracturing |
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