利用PNST测井资料评价示踪陶粒压裂裂缝Ⅰ:能谱

发布时间：2018-01-07 15:09

  本文关键词：利用PNST测井资料评价示踪陶粒压裂裂缝Ⅰ:能谱　出处：《测井技术》2016年06期 　论文类型：期刊论文

  更多相关文章： 脉冲中子测井 水力压裂 裂缝高度 示踪陶粒 俘获能谱 地层元素 资料解释

【摘要】：为满足水力压裂支撑缝高度评价需要,针对含高热中子俘获截面材料氧化钆的非放射性示踪陶粒的辨识问题,研究了PNST俘获伽马能谱测井资料处理与解释方法。经预处理实测俘获能谱和元素标准谱、解谱确定元素产额、校正井眼元素产额、运用相对灵敏度因子和氧化物闭合模型等数据处理与解释步骤,获得了地层元素干重与矿物组分。为反映地层的可压裂性,进一步计算了岩石脆性指数。测井实例表明,通过比较压裂前后地层钆元素干重的差异,能辨识示踪陶粒铺置位置。该方法的解释结论与测量热中子俘获截面的解释结论相符,且该方法具有特异性和更高的灵敏度。
[Abstract]:In order to meet the need of evaluating the height of hydraulic fracturing support fracture, the identification of non-radioactive tracer ceramsite containing gadolinium oxide with high thermal neutron capture cross section was studied. The processing and interpretation method of PNST capture gamma-ray spectroscopy logging data are studied. The elemental yield is determined and the borehole element yield is corrected by pre-processing measurement of capture spectrum and elemental standard spectrum. By using the relative sensitivity factor and the oxide closure model, the dry weight and mineral components of the formation elements are obtained, which reflect the fracturing ability of the formation. The rock brittleness index is further calculated. The logging example shows that the difference of formation gadolinium dry weight before and after fracturing is compared. The method can identify the location of tracer ceramsite. The result of this method is consistent with that of the measurement of thermal neutron capture cross section, and the method has higher sensitivity and specificity.
【作者单位】： 大庆油田有限责任公司测试技术服务分公司;
【基金】：国家科技重大专项大型油气田及煤层气开发(2011ZX05014)
【分类号】：TE311;P631.81
【正文快照】： 0引言评价水力压裂人工裂缝位置与宽度有助于制定开发井未来措施方案,也有助于调整同一区块其他井压裂方案。非放射性示踪陶粒压裂裂缝评价技术由放射性示踪压裂评价技术演变而来,主要用于探测垂向裂缝高度(支撑剂铺置高度)和定性指示缝宽。非放射性示踪陶粒支撑剂中含少量的，

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