Geological probability calculation was applied to the Northern Croatian Neogene deposits in the western Sava Depression. Structures “A” and “B” (with sandstone hydrocarbon reservoirs inside the Kloštar Ivanić Formation, Upper Miocene) were analyzed using two different Probability of Success (POS) methodologies. The classical POS approach showed that, in such play and wider areas of selected two structures, the probability for discovering the new HC reservoirs is 42.18%. This is valid for minimum of 500,000 m³ of geological reserves. The modified POS approach has been used for calculation of waterflooding efficiency in selected structures “A” and “B.” The probability value of 56.25% indicates that future flooding would result in increased recovery.

中文翻译：

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成功地质概率（POS），克罗地亚萨瓦De陷西部中新世晚期构造案例研究

地质概率计算应用于萨瓦凹陷西部的克罗地亚北部新近纪沉积。使用两种不同的成功概率（POS）方法对结构“ A”和“ B”（在上中新世的克洛什塔尔伊凡尼奇组内部有砂岩油气藏）进行了分析。经典的POS方法表明，在这样的活动和选定的两个结构的较宽区域中，发现新的HC储集层的可能性为42.18％。这对于至少500,000 m ³的地质储量有效。修改后的POS方法已用于计算选定结构“ A”和“ B”中的注水效率。56.25％的概率值表示未来的洪水将导致增加的采收率。