冀中束鹿凹陷沙三段致密油气藏有利勘探区带评价

Tight reservoir evaluation for the Member 3 of Shahejie Formation in SL Sag,Jizhong

针对冀中束鹿地区沙三段下亚段复杂致密砂砾岩油气藏地震预测难度大的特点,提出一种基于GeoEast解释系统多项特色技术的致密储层预测思路。应用构造导向滤波和多属性融合技术识别断层,明确构造缝发育特征;运用波形分类技术研究地震相,划分砂砾岩有利沉积相带;利用高亮体和流体活动性属性识别岩性和含油气区;最终完成有利勘探区带评价。实际应用证明,基于GeoEast解释系统的致密储层预测思路在研究区油气勘探中应用效果显著,预测吻合率高,针对类似问题具有较强推广性。

For complex tight glutenite reservoirs in SL Sag, Jizhong, we propose a prediction workflow based on the interpretation tools provided by GeoEast. The structure-guided filtering and the multiattribute fusion are adopted to identify faults and determine structural fractures. The seismic waveform classification is used to delineate glutenite sedimentary facies. The highlight volume and fluid mobility attributes are effective to recognize lithology and hydrocarbon. The final reservoir evaluation for the Member 3 of Shahejie Formation shows a good coincidence with latter drilled wells, which demonstrates a great potential of hydrocarbon exploration in the area.