摘要
在分析总结我国煤矿井下水力压裂增透抽采已有研究成果的基础上,从理论基础、装备水平、技术工艺等方面探讨了井下钻孔水力压裂取得的成绩与不足,认为目前煤矿井下水力压裂增透抽采理论与技术多借鉴于石油气、煤层气开采的相关研究成果,尚没有完全形成以煤层瓦斯赋存特征、采掘应力场、裂隙场、流场的动态变化特征和井下瓦斯抽采特点等为基础的、特色鲜明的煤矿井下水力压裂理论及技术体系。据此,提出了相应对策:大力发展瓦斯抽采地质学,研究水力压裂前、中、后地应力和水力裂缝演化规律及瓦斯抽采的动态响应特征;进一步提高煤矿井下水力压裂的钻孔、封孔、压裂、测试等相关的设备水平;以缝网改造为煤矿井下水力压裂技术的发展思路,结合井下"三场"动态变化特征,有的放矢进行水力压裂设计,丰富内涵,扩展外延;大力发展井下与地面联合水力压裂抽采瓦斯及煤气共采等理论与技术。为煤矿井下水力压裂的推广应用提供一定的借鉴。
Summarizing and analyzing hydraulic fracturing and gas drainage based on existing research resultsin coal mine, the problems and achievement are discussed existing in hydraulic fracturing from the hydraulicfracturing theory, equipment level and technical craft. It is considered that the theory and technology of hydraulicfracturing in coal mine are more than borrowed in view of oil and gas mining, and is not yet fully formed incoal seam gas occurrence characteristics and mining stress field, fracture field, flow field characteristics of dynamic change and mine gas extraction characteristics, the basis of the characteristic of the coal mine hydraulicfracturing theory and technology system. On this basis, it is put forward the corresponding countermeasures ： developingthe gas extraction from geology, before, during and after the hydraulic fracturing insitu stress and hydraulicfracture evolution rule and the dynamic response characteristics of the gas extraction ; it is further improvethe coal mine drilling, hole sealing of hydraulic fracturing, fracturing, testing and other related equipmentlevel; based on the development of the hydraulic fracturing technology in the coal mine with the transformationof the joint network reconstruction, it is purposeful for hydraulic fracturing design, rich connotation and extension; the theory and technology are vigorously developed well field combined with the hydraulic fracturing of theextraction of gas and coal gas. Some reference is provided for the popularization and application of hydraulicfracturing in coal mine.
出处
《河南理工大学学报（自然科学版）》
CAS
北大核心
2016年第3期303-308,共6页
Journal of Henan Polytechnic University（Natural Science）
基金
安全生产重大事故防治关键技术重点科技项目(henan-066-2013AQ)
安全生产重大事故防治关键技术科技项目(henan-0007-2015AQ)
河南省教育厅科学技术研究重点项目(13A440320)
关键词
水力压裂
存在问题
缝网改造
井地联合
hydraulic fracturing
problems
joint network reconstruction
well to joint
