摘要
扇区水泥胶结测井仪器(SBT)在评价固井水泥胶结周向非均质性方面较声波幅度测井仪(CBL)有明显优势。对同一口井同时测量的SBT与CBL进行ATAV-CBL交会图分析发现,对于常规密度水泥固井两种评价标准基本一致,但SBT可以提供更准确的综合评价结果;对于低密度水泥固井,现有CBL评价标准偏低导致评价结果偏乐观,因此在实际资料解释中应重视并参考声幅变密度测井(VDL),且有必要开展相关实验研究对现有评价标准进行修正。
Segmented bond tool(SBT)has a distinct advantage over the conventional cement bond logging(CBL)in evaluating the circumferential heterogeneity of cementation.SBT and CBL were performed simultaneously in one well.Through the ATAV-CBL crossplot analysis,it can be found that for the normal-density cement the two evaluation criterions are basically consistent with each other,even when SBT can provide more accurate comprehensive evaluation results.For low-density cement,the current CBL evaluation criterion leads to a more optimistic result,therefore,it is essential to refer to the variable density logging(VDL)in the actual CBLevaluation,and it is necessary to carry out relevant experimental research to revise the existing evaluation criterion.
出处
《国外测井技术》
2017年第6期46-49,共4页
World Well Logging Technology
关键词
周向非均质性
交会图低密度水泥
评价标准
the circumferential heterogeneity
cross plot
low-density cement
evaluation criterion
