地质找矿论丛2017，Vol.32Issue(1)：82-92,11.DOI:10.6053/j.issn.1001-1412.2017.01.010
琼东南盆地深水区宝岛—长昌凹陷火山/岩浆底辟分布及CO2充注风险分析
Volcano/magma diapir distribution and analysis of CO2 injection risk in Baodao-Changchang Sag of deepwater area in Qiongdongnan Basin
摘要
Abstract
At present,the exploration in deepwater of Qiongdongnan Basin is facing with mantle-derived CO2 risk,especially in Baodao-Changchang Sag,the eastern deepwater area.Multiple high CO2-bearing gas layers have been found in northern margin of Baodao Sag.This paper is based on seismic volcanic stratigraphic theory and uses seismic phase analysis technique to recognize volcano/magma diaper distribution and analyze the distribution pattern and the control factors.The result shows that in Baodao-Changchang Sag the volcano/magma diapers occur as bead in strings along deep fault;in center of the sag are concentrated big volcanoes;upwelling of the mantle,fault activity and thickness of sediment cover during peak active volcanism in Miocene epoch are the main control factors.Based on spatial-temporal relationship analysis of the volcano/magma diapir types and the distribution pattern carrier systems and accumulation conditions,the risk in Baonan step-fault zone is lower,especially in the major target,3rd member of Lingshui Formation.关键词
琼东南盆地/宝岛—长昌凹陷/火山/岩浆底辟/CO2充注风险Key words
Qiongdongnan basin/baodao-changchang sag/volcano/magma diaper/CO2 injection risk分类
能源科技引用本文复制引用
郭明刚,朱继田,曾小宇,孙志鹏..琼东南盆地深水区宝岛—长昌凹陷火山/岩浆底辟分布及CO2充注风险分析[J].地质找矿论丛,2017,32(1):82-92,11.基金项目
“十二五”国家科技攻关重大专项“南海北部深水区潜在富生烃凹陷评价”(编号:2011ZX05025-002)资助. （编号:2011ZX05025-002）
