成像测井在珠江口盆地惠州凹陷古近系勘探中的应用

针对珠江口盆地惠州凹陷海上钻井较少,对深层古近系各种地质情况了解不深的问题,在该地区古近系地层的钻探过程中首次使用了FMI成像测井技术。结合常规测井及岩心资料对惠州A构造的岩性、沉积构造及沉积相特征等进行了有效识别。通过井旁构造分析,对该区断层转换带地震资料处理中的困惑进行了解答,证实了在该区文昌组发现的水平层现象是由地震多次波引起,识别出地震上无法显示的微小断层,并对古水流方向进行了分析,极大地促进了惠州凹陷古近系油气藏勘探的进程。

The Application of Imaging Logging in Exploration of Palaeogene in Huizhou Depression of Pearl-river Mouth Basin

In allusion to the problem of less well drilling,and less understanding of Pelaeogene geologic conditions,FMI image logging technique was first used in drilling the Paleogene formation.In combination with conventional logging and core data,the characteristics of lithology,sedimentary structure and sedimentary facies of Structure A in Huizhou Depression were effectively recognized.By well side structural analysis,the suspicion of seismic process of fault-zone conversion is solved and it is recognized that subzones are difficult to be displayed in the process and Palaeogene water flow direction is analyzed,it promotes the progress of Palaeogene reservoir exploration.