近海复杂断块区地震成像及储层精细描述关键技术研究————以南海西部北部湾盆地涠 12-1 油田为例

南海西部涠 12-1 油田为近海复杂断块型油田，具有目的层段断层复杂、储层纵横向分布规律和连通性复杂、储层非均质性强等特点，另外因地震成像不清，给前期勘探和后期油藏开发带来极大困难。 针对以上难点，从地震资料成像处理技术、解释性成像处理技术和油藏地质建模技术等方面展开研究，提出了叠前成像处理及目标成像处理的研究思路，利用叠前各向异性深度偏移、优势道叠加与叠后分频成像及扩散滤波等技术和方法，取得了较好的成像效果，形成了复杂断块油田地震成像关键技术系列。 该研究成果不仅对涠 12-1 油田下一步的开发部署与调整具有指导意义，而且对其他复杂断块型油气田的勘探开发也具有一定的推广价值。

Key technologies of seismic imaging and reservoir description for offshore complex fault block: A case study from Wei 12-1 Oilfield in Beibu Gulf Basin

Wei 12-10ilfield is a complex fault block oil field offshore western South China Sea, and it is characterized by complex objective interval fault, complicated reservoir distribution, complicated connectivity and strong heterogeneity. The seismic imaging is unclear, which brings great difficulties to the previous exploration and later reservoir development. This paper carried out studies from the aspects of seismic data imaging processing techniques, interpretative imaging technology and geological modeling, proposed ideas of pre-stack imaging and target imaging processing, and obtained good imaging results by using techniques and methods, auch as pre-stack anisotropy depth migration, advantage trace stacking and post-stack frequency imaging and diffusion filtering, and formed a series of key techniques of seismic imaging for complex fault block oil and Gas field. These research results not only have a guiding significance to the further development, deployment and adjustment in Wei 12-10ilfield, but also have certain popularization value for the exploration and development in other complex fault block oil and gas field.