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DIFFERENCES OF RESERVOIR-CAP ASSEMBLAGES BETWEEN NORTHERN AND SOUTHERN CONTINENTAL MARGINAL BASINS OF SOUTH CHINA SEA AND THEIR GENESIS
Author(s): YANG Jianmin1, ZHANG Cheng1, 2, WANG Wei1, HUANG Wei1, WAN Ling3, Ministry of Education, Wuhan 430074, 3 Guangzhou Marine Geological Survey, Ministry of Land and Resources, Guangzhou 510760)
Pages: 97-
105
Year: 2012
Issue:
5
Journal: Marine Geology & Quaternary Geology
Keyword: 储集层; 储盖组合; 陆缘盆地; 南中国海;
Abstract: 南海南北陆缘盆地油气成藏条件差异较大,目前南部盆地的油气产量远大于北部盆地。根据储集层和盖层的环境特征,大致可将南海南北陆缘盆地储盖组合划分为4种类型:陆相砂+局部盖层组合,海陆交互相砂+局部/区域性盖层储盖组合,滨浅海碎屑砂体/碳酸盐岩生物礁+浅海相泥岩区域性盖层储盖组合以及深水碎屑岩/浅海砂体+深水泥岩储盖组合。相对于北部盆地,南部盆地的碳酸盐岩+海相泥岩储盖组合发育更加广泛。分析认为,构造活动差异是造成南北陆缘盆地储盖组合特征及其差异的第一控制因素;此外,区域地质和环境背景的演变也是造成这种差异的重要影响因素。
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