The Reservoir Stage Division and Interpretation of Deep-water Turbidity Channel in West Africa Based on Well-to-seismic

The oil energy has become an important strategic resource for high-speed economy development. In recent years, almost half of new oil and gas reserves in the world mainly concentrated in the deep-water submarine fan. For the offshore oil field development, especially for the deep-water turbidity channel, the vertical multi-period superposition of the reservoir, the lateral severe velocity variation and the wide-spaced wells lead to much difficultly for the oil field efficient development. Thus the study about channel division and interpretation method based on well-to-seismic integration is of great importance. In this paper, the West Africa deep-water turbidity channel division and interpretation technique by using well-to-seismic integration is discussed. For this technique, the reservoir internal velocity change caused by AVO effect is firstly considered to guide the detailed well-to-seismic tie. Then the channel is divided by exploiting the horizon flattening and slice attribute analysis techniques and taking the depositional model as reference. Based on the division result and the slice attribute, the pseudo three-dimensional interpretation of the West Africa deep-water turbidity channel is completed. The real data example shows that the method has a relatively good application effect.