深水复合浊积水道砂体连通性精细表征技术及应用

Technique and application of fine connectivity characterization of composite deep water turbidite channels

卜范青 张宇焜 杨宝泉 高博禹 高云峰

中海油研究总院开发研究院，北京 100027 中海油乌干达有限公司，乌干达 坎帕拉  00256

CNOOC Research Institute, Beijing 100027, China CNOOC Uganda limited Company, Kampala 00256, Uganda

深水复合浊积水道沉积体内水道侧向摆动频繁，不同期次水道垂向相互叠合，部分水道下切，砂体展布以及砂体间的连通关系复杂。对如何识别追踪连通区域并建立连通区域的三维模型，前人鲜有研究。针对复合水道复杂连通情况，以西非深水M油田为例，在深水浊积理论指导下，优选纵横波速度比地震属性以及生产动态资料，通过标定砂体叠合区域、确定连通区域（薄互层小于4　m）、可能连通区域（薄互层大于4　m小于15　m），最终实现对水道砂体间连通区域进行针对性地定性、定量化表征，并建立连通区域精细三维地质模型，该方法在M油田中得到了良好的应用效果，探索出了一种表征复合水道连通性的技术方法和流程。

The system of composite deepwater turbidite channels mainly develops composite turbidite channels, in which channels frequently swing laterally, and different stages of turbidite channels are overlapped each other. There is a big uncertainty about the sand body connectivity of the vertical different channels. Few people ever did the research about how to identify the composite turbidite channels or built a three-dimensional model of regional connectivity connected region. To solve the problem, taking M Oilfield in West African deepwater for example, based on the theory of the deep water turbidite, optimizing the VP/VS seismic attributes and production characteristics, identifying “overlapping area”, the connectivity area （interbedded<4 m）and probably connected region（4　m<interbedded<15　m), and a great deal of qualitative and quantitative researches have been done to make it clear about the connectivity of different sand bodies, finally the three-dimensional geological model of connectivity between channels is established. And it has a good effect in the oil field, which shows a good technology to characterize complex waterway connectivity.

10.6056/dkyqt201503009