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基金项目:国家科技重大项目“渤海湾盆地精细勘探关键技术——辽河坳陷增储领域地质评价与勘探实践”(2016ZX05006-005),中国石油天然气股份公司科技重大专项“辽河油田千万吨稳产关键技术研究与应用”(2017E-16)
作者单位
康志勇,韩明伟,周明旺,等 中国石油辽河油田公司勘探开发研究院 
摘要:
      油气勘探开发涉及各类数据体,同一数据体可得多种平均值,目前尚无明确而有效的方法以判断何种平均值能客观反映数据体的典型水平。运用数据统计平均分析方法,对勘探开发实践中的孔隙度、渗透率、产量、成本等数据体进行系统分析,确立了加权中位数计算公式和平衡中位数法则。加权中位数计算公式适于分析不同领域正常有序数据体的基本特征,加权中位数为正常有序数据体的平衡点;平衡中位数法则适于确定有足够大数据容量、能满足统计分析基本要求、能选择合理权衡指标的正常有序数据体的典型水平;有明确物理意义的加权平均值也可确定数据体的典型水平。
关键词:平均值代表性  加权中位数  平衡中位数法则  数据体典型水平  有序数据体  权衡指标
Abstract:
      Various kinds of data volume are involved in the field of oil and gas exploration and development. Multiple average values can be calculated for the same data volume. At present, there is no clear and effective method to define which average value can objectively reflect the typical level of the data volume. Using the principle of data statistical average analysis, this paper systematically analyzes the data volume such as porosity, permeability, production and cost in the exploration and development data in practice, and establishes the calculation formula of weighted median and balanced median rule. The calculation formula of weighted median is an effective means to analyze the basic characteristics of normal and ordered data volume in different fields. The weighted median is the balance point of normal ordered data volume. Balanced median rule is applicable to determine the typical level of normal and ordered data volume with large enough data capacity, capable of meeting the basic requirements of statistical analysis and selecting reasonable weighted indexes. The weighted average with clear physical meaning can also be used to determine the typical level of data volume.
Keywords:representativeness of mean value  weighted median  balanced median rule  typical level of data volume  ordered data volume  weighted index
康志勇,韩明伟,周明旺,等.油气勘探开发数据体平均值代表性分析[J].地质学刊,2022,46(2):136-141