塔里木盆地塔中地区鹰山组碳酸盐岩缝洞型储层地震正演模拟研究

发布时间：2018-04-14 02:14

本文选题：正演模拟 + 地震相　；参考：《地学前缘》2017年05期

【摘要】：以塔里木盆地塔中地区鹰山组碳酸盐岩储层为研究对象,综合应用测井、地震等资料,总结了碳酸盐岩储层的地震相特征,建立了典型的基于井震标定的地质模型,并针对溶洞型、裂缝型及缝洞型储层进行了系统的正演模拟。研究结果表明:研究区碳酸盐岩储层分为"串珠状强反射"、"片状强反射"、"杂乱状弱反射"地震相特征;随着溶洞规模的增大,异常反射波所占的道数明显增多,反射能量增强;当溶洞沿某一方向规则排列时,地震反射异常沿溶洞的排列方向呈现规律变化的异常响应;水平裂缝地震异常反射能量最强,纵向裂缝地震异常反射能量最弱;低角度裂缝地震异常反射同相轴倾斜方向与裂缝倾斜角度相反;高角度裂缝地震异常反射同相轴倾斜方向与裂缝倾斜角度相同;裂缝与溶洞复合时,地震异常反射特征与溶洞型储层反射特征相似;不同类型地震相与正演模拟储层类型的对应关系明显。
[Abstract]:Taking the carbonate reservoir of Yingshan formation in Tarim Basin as the research object, the seismic facies characteristics of carbonate reservoir are summarized by using logging and seismic data, and a typical geological model based on well earthquake calibration is established.The system forward modeling is carried out for karst, fractured and fractured reservoirs.The results show that carbonate reservoirs in the study area are characterized by "beaded strong reflection", "flaky strong reflection" and "disorderly weak reflection" seismic facies, with the increasing of cave size, the number of abnormal reflection waves increases obviously and the reflection energy increases.When the caverns are arranged in a certain direction, the seismic reflection anomaly presents a regular abnormal response along the direction of the cave arrangement, the seismic abnormal reflection energy of the horizontal fracture is the strongest, the seismic abnormal energy of the longitudinal fracture is the weakest.The cophase tilt direction of seismic anomalous reflection of low angle fracture is opposite to that of fracture inclined angle; the direction of cophase tilt direction of seismic anomaly reflection of high angle fracture is the same as that of fracture inclination angle; when the fracture and cave are combined,The reflection characteristics of seismic anomalies are similar to those of cavernous reservoirs, and the corresponding relationship between different seismic phases and forward simulated reservoir types is obvious.
【作者单位】：西北大学大陆动力学国家重点实验室;西北大学地质学系;中国石油东方地球物理公司;陕西延长石油(集团)有限责任公司研究院;
【基金】：国家自然科学基金重点项目(41330315) 博士后面上基金项目(2015M572594) 陕西省教育厅科研计划项目(14JK1754)
【分类号】：P618.13;P631.4

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