渤海海域和滩海勘探工作的新进展及发展方向

RECENT PETROLEUM EXPLORATION PROGRESS IN THE SEA BEACH AND SHOAL AREA OF BOHAI BAY

渤海湾盆地是陆海统一的大型裂谷盆地 ,陆地和海域有共同的油气生聚规律。但其沉积中心有序地向海域中部迁移 ,生储油层系向东增多、变新 ,含油气性更好。海域的渤中凹陷和滩涂—极浅海是近期内增储上产的两大领域。它们的进展说明 ,随时间推移 ,在我国新生代东部近海盆地和陆架盆地普遍存在沉积中心向外转移的现象。因而建议同时强化对渤海两个领域的勘探 ,开拓南黄海和南海北部上陆坡地区及加强东海陆架盆地东带的勘探工作。

Bohai Bay basin has the same conditions for oil and gas generation and accumulation.It is a large rift basin composed of the continental and sea parts.The deposit center had moved towards the central part of the sea,and more and better reservoir layers of newer ages were developed towards the eastern area.The areas for increasing oil reserve and production in the recent period are in the central Bohai depression of the Bohai Bay Basin and extremely shallow sea.The recent exploration progress shows that the deposition centers nearby offshore basin and continental basin in the Cenozoic age had been moved outwards with the time.Therefore,the exploration should be carried out in the southern Yellow Sea and upper continental slope in the northern South China Sea,and exploration of estern belt in East Sea Basin should be enhanced.