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渤海湾盆地具有形成潜山的有利地质条件。随着勘探程度的深入,潜山内幕油气藏逐渐取代潜山顶部风化壳油气藏,成为主要勘探目标,但受成藏机理认识和技术水平的制约,渤海湾盆地潜山内幕油气藏的勘探和研究工作尚处于起步阶段。从潜山内幕油气藏的概念、分类及成藏主控因素角度出发,评述了渤海湾盆地潜山内幕油气藏的主要研究进展,探讨了潜山内幕油气藏的建议分类,指出深部油源、储层、内幕隔层有效配置的综合作用是控制潜山内幕油气成藏的主要因素,并阐述相关认识。随着成藏机理认识和技术水平的提升,未来应该积极拓展阿尔奇公式在复杂储层的应用,大力发展潜山内幕储层非均质性预测技术。鉴于潜山内幕速度差异小、波阻抗界面不明显,以及储层埋藏较大、地震波能量吸收衰减严重、地震资料信噪比低的特点,大力实施高精度二次三维地震采集以及大面积连片、精细处理技术,并结合欠平衡钻井与高效测试等技术,减少勘探风险。
Bohai Bay Basin has the favorable geological conditions for the formation of buried hills. With the deepening of exploration, buried hill oil and gas reservoirs gradually replaced the weathering crust reservoir at the top of the buried hill, becoming the main exploration target. However, due to the understanding of the mechanism of reservoir formation and the restriction of technical level, exploration and exploration of buried hill reservoirs in the Bohai Bay Basin and Research is still in its infancy. In view of the concept, classification and main controlling factors of buried hill reservoirs, the main research progress of buried hill reservoirs in Bohai Bay Basin is reviewed. The proposed classification of buried hill oil reservoirs is discussed, The integrated effect of effective configuration of the reservoir and the inner lining is the main factor controlling the accumulation of oil and gas inside the buried hill and expounds the related knowledge. With the understanding of the mechanism of accumulation and the improvement of the technical level, the application of the Archie formula in complex reservoirs should be actively expanded in the future, and the heterogeneity prediction technology for buried-hill internal reservoir should be vigorously developed. In view of the small difference in velocity inside the buried hill, the obvious wave impedance interface, the large reservoir burial, the serious attenuation of the seismic energy absorption and the low signal-to-noise ratio of the seismic data, the high-precision secondary 3D seismic acquisition and large area convolution , Fine processing techniques, combined with underbalanced drilling and high efficiency testing techniques to reduce exploration risks.