分频解释技术在塔河油田储层预测中的应用

Application of frequency division interpretation technique to reservoir prediction in Tahe oilfield

朱定 孙素琴 蒋进勇

Zhu Ding Sun Suqin Jiang Jinyong

塔河油田石炭系卡拉沙依组砂体埋藏深、厚度薄、横向变化大,砂体预测描述困难。利用分频技术对卡拉沙依组薄砂层进行了识别与描述,通过特定频率的相位,揭示了砂组多期沉积的边界,并利用调谐亮点对砂组的分布范围进行了追踪,通过首峰频率估算了砂组的厚度。分频解释技术达到了薄砂岩储集层的识别目的,提高了储层预测的精度。

Sandbodies in the Carboniferous Kalashayi Formation in the Tahe oilfield are characterized by deep burial depth,small thickness and great lateral viariation,which makes it hard to predict them.In this paper,the frequency division interpretation tecnique is used to identify and characterize thin sandstones in the Kalashayi Formation.Boundaries of multi-stage deposits in the sandsonte unit are identified by using the phase of certain frequency.The distribution of sandstone is traced according to tuning "bright spot" and the thickness of sandstone is calculated according to the frequency of first peak.The frequency division interpretation tecnique can successfully identify thin-sandstone reservoirs and improves the accuracy of reservoir prediction.

10.11743/ogg20100108