福建东部海域油气的前景

本文根据近年对福建邻近海域油气普查成果,研究了福建东部海域的油气构造,认为福建东部海域新生代沉积的基底面,由大陆向海倾斜延伸,其间形成较厚的新生代沉积,有厦门、乌丘屿、东引岛盆地和九龙江、晋江、韩江等构造凹陷。提出了可能存在的油气储层为古新统、渐新统、中新统,可能存在“新生古储”和“古生新储”等组合,对佛昙群还应注意“自生自储”的可能性。各时代地层中的泥岩、页岩及孔渗条件较差的玄武岩则作为盖层。

On oil-gas prospect in East Fujian Waters

Based on the important results recently obtained from the oil-gas searching and prospecting in the adjacent waters (southwest Fast China Sea, northeast South China Sea and offshore Taiwan),the Cenozoic sedimentary basement of waters to the east of Fujian dips to the sea from the land in Fujian and extends to the major fault in the east of Fujian sea area, but rapidly downwarps in the eastern part of the fault, which forms thicker Cenozoic sedimentary strata. Maybe it is an uplift in the central straint. Except for Xiamen, Wuqiuyu and Dongyindao basins, Jiulongjiang, Jinjiang and Hanjiang structural depressions have also been discovered. The possible oil-gas-bearing reservoirs belong to the Eocene, Oligocene and Miocene. The assembly of the neogenic-neoreservoir, neogenic-palaeoreservoir and palaeogenic-neoreservoir can be present, and self-generation and self-reservoir in Futan Formation should also be paid attention to oil-gas covering strata can be considered as the mud-stone and shale in all the strata and the weak seepage basalt.