塔河油田南部盐下地区地震反射特征分析技术

Application of seismic reflection analyses in salt covered region,south of Tahe Oil Field

李海英 王胜利 王志军

Li Haiying Wang Shengli Wang Zhijun

中国石化 西北油田分公司 勘探开发研究院,乌鲁木齐 830011

Research Institute of Petroleum Exploration & Production,SINOPEC Northwest Company,Urumqi,Xinjiang830011,China

塔河油田南部盐下地区奥陶系油气藏油水关系复杂,水体活跃,局部油气富集,不同缝洞带油层厚度和单井产能差异大。通过理论正演模型对串珠状反射特征形成的机理研究,结合该地区地震反射特征分析技术,统计不同的反射特征与单井生产测试情况之间的关系,探索性的寻找盐下地区油气富集的规律,找到不同的地震反射特征与油气水之间的关系,强化这一地区复杂油水关系以及主导控制因素的研究,为有效的规避水体活跃区提供有力的支撑。

In the Ordovician reservoirs covered by salt formation in the south of Tahe Oil Field,the rela-tionship between oil and water is complicated.Water flows actively.Oil and gas accumulate regionally.Oil reservoir thickness and single well production are obviously different between different fractured andvuggy belts.Theoretical forward model was used to analyze the formation mechanism of stringed-beadreflection.Combined with seismic reflection studies,the relationship between reflection features andsingle well production was discussed.The principle of hydrocarbon accumulation in regions covered bysalt was also talked about.The relationship between seismic reflection features and oil-gas-water wasfound out.The complicated relationship between oil and water as well as the controlling factors werefocused on,helping to avoid water-active regions.

https://doi.org/10.11781/sysydz2011S1013