中国南方海相油气勘探主要研究方向

PROBLEMS AND SUGGESTIONS ON MARINE PETROLEUM EXPLORATION IN SOUTH CHINA

中国南方海相碳酸盐岩的面积约占全国海相沉积区面积的50%。由于多期次的构造运动叠加、改造,现今的海相沉积盆地均以残留盆地的面貌存在,空间分布及结构特点复杂多样,横向变化极不均匀。区内有机质演化程度高,油气成藏富集规律复杂。因此,了解中国南方海相沉积盆地油气成藏的基本规律,是一个有待进一步深化的过程。从南方古生代沉积盆地及中、新生代沉积盆地的演化、叠加整体分析,探讨油气生成、运聚、保存的基本规律,从而进一步深化研究原型盆地叠加改造的有效性、烃源岩的有效性、整体保存条件的有效性和含油气系统的有效性。应有重点、有步骤地对有利或潜在的油气远景地区集中力量、发挥优势综合研究,力争突破,以带动油气勘探的扩展。在其它地区应保持适当的研究力量,进一步深入研究油气运聚、保存规律的有效性,作为中、长期勘探的接替地区。

The area of marine deposit in South China is about 50% of that in China. The marine sedimentary basins were incomplete. They have been reformed by structural movements taking place in the area. The distribution and structural styles of residual basins were greatly complex and inhomogeneous. The organic matter was overmature, and the models of accumulation and formation of oil and gas were complex in the area. The regularity of oil and gas pool formation is remained to be studied in the marine sedimentary basins of South China. The evolution and superimposition should be analyzed in the Paleozoic marine sedimentary basins and the Meso-Cenozoic nonmarine sedimentary basins together. The basic regularities of formation, migration and preservation of oil and gas should be studied. The further studies would be the effective reformation and superimposition of proto-type basins, the effective sources rocks, the effective preservation conditions and the effective petroleum systems. In the potential areas, comprehensive studies must be made in order to make a breakthrough in oil and gas exploration. The effective migration and pre-servation of oil and gas must be deeply studied in middle to long term exploration areas.