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礁滩储层是我国海相碳酸盐岩油气勘探的重要目标,也是我国油气产能的重要接替领域之一。由于礁滩储层储集空间类型多样,非均质性极强,依靠常规测井判别其沉积相和岩性非常困难。成像测井能够清晰地反映礁滩储层的结构组分和沉积构造,为沉积相和岩性的判别提供了可靠的依据。在对大量礁滩储层的成像和岩心对比观察的基础上,我们提出了9种典型的成像解释模式,建立了利用成像解释模式自动判别礁滩储层沉积相和岩性的方法并研制了相应的处理软件。该方法在塔中和川东北地区礁滩储层的实际应用中取得了良好的效果。
Reef beach reservoirs are the important targets for marine carbonate rock oil exploration in China and also one of the important succession areas for oil and gas production in China. Due to the diversity of reservoir space and the heterogeneity in reef bank, it is very difficult to judge the sedimentary facies and lithology by conventional logging. Imaging logging can clearly reflect the structural components and sedimentary structures of the reefs reservoirs, providing a reliable basis for the discrimination of sedimentary facies and lithology. Based on the imaging and core contrast observations of a large number of reef-shoal reservoirs, we propose nine typical imaging interpretation models and establish a method for the automatic discrimination of sedimentary facies and lithology of reef-shoal reservoirs using imaging interpretation models Corresponding processing software. The method has achieved good results in the practical application of reef shoal reservoir in the tower and northeastern Sichuan.