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兩個(gè)經(jīng)驗(yàn)滲透率公式--SDR公式(斯倫貝謝Doll研究中心)和Timur-Coates公式被廣泛用于石油工業(yè)。NMR滲透率公式可估算水飽和砂巖中的鹽水滲透率 對(duì)于許多砂巖來(lái)說(shuō)，孔隙本身和孔喉大小之間具有很好的相關(guān)性，這是計(jì)算NMR滲透率的重要基礎(chǔ)。兩個(gè)滲透率測(cè)量值都含有模型參數(shù)(如指數(shù)和比例常數(shù))。服務(wù)公司所采用的缺省值通常能提供定性準(zhǔn)確的NMR滲透率曲線(可用來(lái)比較兩個(gè)層的滲透率)。盡管這些信息有價(jià)值，但估算的滲透率會(huì)明顯地偏離地層的真實(shí)滲透率。要定量估算特殊巖石的準(zhǔn)確滲透率，建議對(duì)巖樣的測(cè)量結(jié)果進(jìn)行分析，從而確定最優(yōu)的滲透率方程參數(shù)。SDR和Timur-Coates滲透率的計(jì)算都受烴影響，需要更多的研究來(lái)提出預(yù)測(cè)烴和水相對(duì)滲透率的公式。
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