寺家庄井田煤储层渗透率表征方法优选

发布时间：2018-03-13 19:24

本文选题：安全工程　切入点：渗透率　出处：《安全与环境学报》2015年02期 　论文类型：期刊论文

【摘要】：煤储层渗透率是影响瓦斯抽采与煤层气开发的重要参数,快速评价不同结构煤体的渗透率对指导现场工作有重要意义。以寺家庄井田为例,为了优选出表征煤储层渗透率的合适方法,通过裂隙分形维数、声波速度和地质强度指标(GSI)对煤体结构进行定量表征,测试其渗透率,依据表征的难易程度和二者拟合系数进行对比。结果表明:裂隙分形维数与渗透率相关性显著,但是操作较为繁琐且不适用于软煤;声波速度法操作简单,但与渗透率关系不明显;地质强度指标与渗透率具有显著的相关性,操作简单,适用于所有煤体结构。因此,寺家庄井田煤储层渗透率表征的最佳方法为地质强度指标法。
[Abstract]:The permeability of coal reservoir is an important parameter affecting gas extraction and coalbed methane development. It is very important to evaluate the permeability of coal bodies with different structures quickly to guide the field work, taking Sijiazhuang mine field as an example. In order to select a suitable method to characterize the permeability of coal reservoir, the coal structure is quantitatively characterized by fracture fractal dimension, acoustic velocity and geological intensity index (GSI), and its permeability is tested. The results show that the fractal dimension of fracture has a significant correlation with permeability, but the operation is tedious and not suitable for soft coal, and the acoustic velocity method is simple to operate. But the relation with permeability is not obvious, the geological strength index has obvious correlation with permeability, the operation is simple, and it is suitable for all coal body structure. Therefore, the best method for characterizing the permeability of coal reservoir in Sijiazhuang mine field is the geological strength index method.
【作者单位】：河南省瓦斯地质与瓦斯治理重点实验室——省部共建国家重点实验室培育基地(河南理工大学);河南理工大学能源科学与工程学院;中原经济区煤层(页岩)气河南省协同创新中心;
【基金】：国家自然科学基金项目(41002047,41472127,41472129) 山西省煤层气联合研究基金项目(2013012004) 河南省科技攻关项目(132102210253) 河南省教育厅科学技术研究重点项目(12A440005,13A440335,14A170005) 河南理工大学博士基金项目(B2012-015)
【分类号】：TD712

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