dì zhì xué jiā / tōng guò / cè jǐng / shù jù / pàn duàn / dì xià / yóu céng / de / hòu dù / hé / fēn bù / fàn wéi地质学家通过测井数据判断地下油层的厚度和分布范围。Geologists use well-logging data to determine the thickness and distribution of underground oil layers.