多测井曲线的综合处理合成

Integrative processing in synthesis of multi-logging traces

测井曲线是地质分层的基础,但在利用单一测井曲线解决复杂地质问题时也存在多解性和局限性。为克服多解性,人们采用多种测井曲线进行地质分层,提高了分层的精度。本文在此基础上提出把多条曲线分别赋予不同的加权因子,然后进行归一化处理,形成一条标准综合参数测井曲线。此综合参数曲线突出了所选的多条测井曲线的公共信息,减少或削弱了单一测井曲线中的偶然误差,提高了综合后测井资料的可信度。该方法可应用于地质分层、岩性分析、含油气预测等诸多领域。应用时要注意,并非所选择的测井曲线种类越多越好。

Logging trace is a basis of geologic strata-partition,but the multi-solution and limitation exist when only using a single logging trace to solve the complex geologic issues.In order to overcome the multi-solution,the people use multiple logging traces for geologic strata-partition and the precision of strata-partition is improved.On that basis,the paper suggests a method,in which the separate weighting factors are assigned to multiple logging traces and then normalization processing is carried out,forming one nominal integrative parametric logging trace.The integrative parametric trace gives emphasis to common information of selected multi-logging traces and reduces or weakens occasional errors in a single logging trace,which increases the believable degree of post-integrative logging trace.The method can be used for strata-partition,lithologic analysis and oil/gas-bearing prediction etc.Note that there is no such case at all that the more selected kinds of logging traces the better when using the method,it must select the logging traces that can reflect the characters of formation units instead.