南海东北部中晚中生代构造、古地理背景及油气远景分析  

AN ANALYSIS OF MIDDLE-LATE MESOZOIC TECTONICS,PALEOGEOGRAPHY AND PETROLEUM POTENTIAL IN THE NORTHEASTERN SOUTH CHINA SEA

作　　者：杨静[1] 冯晓杰 范迎风[1] 朱淑芬 

机构地区：[1]中石化集团中原油田分公司勘探开发科学研究院,河南濮阳,457001 [2]中海石油研究中心勘探研究院,河北高碑店,074010

出　　处：《中国海上油气（地质）》2003年第2期89-92,103,共5页China Offshore Oil and Gas(Geology)

摘　　要：对前人研究成果的综合分析表明,自晚三叠世以来,影响南海东北部构造及古地理、古气候的因素主要是太平洋而并非特提斯.本区晚三叠世-早侏罗世古地理和古气候条件有利于煤系烃源岩的形成;中侏罗世-白垩纪古气候条件对生烃相对不利;晚中生代弧前盆地构造背景不利于形成特提斯域所拥有的优质碳酸盐岩-蒸发岩储盖组合.勘探实践证明,南海东北部的中生界具有一定的油气远景,但油气勘探不应简单套用特提斯模式.It is indicated by integrated analysis of previous researches that paleotectonics, paleogeography and paleoclimate in the northeastern South China Sea mainly by the Pacific other than Tethys have been controlled since Late Triassic. The paleogeographic and paleoclimatic conditions were favorable for deposition of coal_measure source rock during Late Triassic???Early Jurassic, and not for deposition of any source rock during Middle Jurassic??Cretaceous. From Late Jurassic to Early Cretaceous, there was a forearc basin in the area, where it is difficult to form good combined deposition of carbonate reservoir and evaporate seal as in Tethyan realm. Exploration to date shows that there is some Mesozoic petroleum potential in the northeastern South China Sea, but it is not adaptable to simply use the Tethyan exploration model.

关 键 词：南海东北部 中晚中生代 地质构造 古地理背景 油气远景 

分 类 号：P618.130.2[天文地球—矿床学] TE12[天文地球—地质学]