【摘要】 塔里木盆地碳酸盐岩油气藏具有埋藏深,储集空间和流体性质十分复杂,地震反射信号弱的特点。传统叠后地震资料和技术手段难于准确预测这类油气藏的分布和品质。基于地震资料保幅叠前道集,运用纯纵波储层反演技术分析岩溶储层发育的有利部位;运用频率依赖AVO反演方法预测一间房组含油气性,实际应用效果证实预测结果良好;通过古地貌恢复技术预测碳酸盐岩储层有利分布区,能够为溶蚀孔洞储层的展布提供可靠的地质依据。以此为基础,进一步探讨了该区深层次生碳酸盐岩油气藏的分布主要受古地貌、断裂、不整合、构造背景下的上倾部位等因素的控制。地球物理新方法在碳酸盐岩油气藏预测中的成功应用对塔里木盆地下一步深层油气勘探具有重要意义。更多还原

【Abstract】 The hydrocarbon reservoirs of carbonatite in Tarim Basin have the characteristics of deep buried,complicated reservoir space and fluid properties and weak seismic reflection signal.The conventional post-stack seismic data and corresponding techniques are not competent to accurately predict the distribution and quality of this kind of reservoirs.Based on the preserved pre-stack gathers of seismic data,the pure longitudinal wave reservoir inversion technology was used to analyze the favorable position of karstic reservoir;the frequency-dependent AVO inversion method was used to predict the oil-gas-bearing of Yiijanfang Formation;the paleogeomorphy recovery technology was used to predict the favorable distribution of carbonate reservoirs in order to provide a reliable geological basis for the distribution of dissolved pore reservoir;further,the distribution of deep secondary carbonate reservoirs was discussed.The results show that the prediction results by the frequency-dependent AVO inversion method arecoincident with the actual drilling and logging data;the distribution of carbonate reservoirs is controlled by paleogeomorphy,fault,unconformity and the updip part of tectonic setting.The above new geophysical method is successfully applied in the prediction of carbonate reservoirs,promoting the further deep hydrocarbon exploration in Tarim Basin.更多还原