摘要
本文提出了一种集地层测井响应的最佳拟合和区域测井解释经验(专家经验)于一体,用直接寻优的方法还原地层复杂岩性和孔隙度的测井反演新技术。这种新的测井反演技术,克服了CRA解释方法在同一层点上只能处理出包括泥质在内的三种矿物成份的局限性;也避免了GLOBAL等处理软件存在的“初值的选择是影响最终结果的重要关键”的重现。当岩性测井信息较多时,可以比较客观地反演井下复杂地层的岩性和孔隙度。
Based on the work of some other people, this paper advances a newtechnique in log inversion which combines the best fit of log responses tothe formation and local experience in log interpretation (experts experience) todetermine complex lithology and porosity by means of direct optimizationseareh. The new technique overcomes the limitation on CRA where only threeminerals including shale can be processed over a given level, and also avoidsrepresentation of the existence with GLOBAL where 'Selection of the initialparameters is the key point that affects the final results'. With afairly complete suite of lithological logging data, lithology and porosityof complicated formations can be objectively reflected.
