Abstract: Abundant oil and gas resources in the Bohai Gulf Basin are believed to be accumulated in the relatively complex traps of different origin. There are hundreds of megastructural belts in which oil and gas are accumulated in high-yielding blocks. Due to block-faulting, unconformity and faciea chang, the petroliferous traps of different types different pay horizons form megastruc-tural oilfields which classified as follows: 1. Low buried-hill structural belt. 2. High uplift structural belt. 3. Central anticlinal belt. 4. Strucural-lithologic belt On slope. 5. Structural-lithologic belt in trough. The five types of compsite oil and gas megastructural belts mentioned abofe are distributed at specific locations in the graben and semi-graben basins. As exploration continues and with increasing accuracy of digifal seismic data, more and more composite megastructral oil and gas fields, including giant oilfield an and highly productive oil and gas fields, will be found, It is concluded that in the Bohai Gulf Basin, combination of various types of composite megastrucural oil and gas belts may result in a composite oil and gas basin, and the prospect for increasing hydrocarbon reserves and prospect for increasing hydrocarbon reserves and ptoiuetion will be very bright.

摘要： 渤海湾盆地丰富的油气资源,都储集在比较复杂的圈闭之中。在复杂的地质体中,有许多富集高产区。数以百计的二级构造带形成不同层系,不同圈闭类型的复式油气案集带,已知有以下五种类型:(1)低潜山构造带;(2)高凸起构造带;(3)中央背斜带;(4)斜坡构造带;(6)凹槽内各类构造一岩性带。上述五种类型的复式油气聚集带,在每个含油气的笑状凹陷或地堑凹陷内都呈有规律的展布。因此,每个具有成油条件的凹陷可视为由各种不同类型复式油气聚集带组成的复合油气区。随着数字地震技术的提高,在渤海湾盆地内将会继续发现一系列新的复合油气田,也将较快地再发现一些新的大油气田和高产油气田。