摘要
根据前人对东海丽水-椒江凹陷地质研究成果和最新资料,指出新生代的丽水-椒江凹陷主要处于张性应力场中,应力场是控制该区油气运聚的主要因素。采用Maxwell粘弹性模型,对新生代古构造应力场进行了数值模拟。模拟结果表明瓯江运动期,丽水-椒江凹陷处于一种右旋拉张环境;玉泉期的丽水-椒江凹陷处于一种比较稳定的弱拉张环境。研究表明丽水西次凹LS36-1-1井以西,MYF-1井以南的缓坡带是比较有利的油气勘探区域。灵峰凸起带因为应力值偏高有可能导致运移到此处的油气已经沿断层逸散或者被破坏。
According to published geological research results and data, it is found in this paper that the tectonic stress of Lishui-Jiaojiang sag in the East China Sea proves to be tensile and the stress field is the main power for hydrocarbon migration. The stress field in the Miocene System was modeled by Maxwell viscous-elastic mechanics model and by using finite element method for plane stress analysis. The favorable positions for hydrocarbon accumulation were predicted in accordance with the modeling results.
出处
《大地构造与成矿学》
EI
CAS
CSCD
北大核心
2007年第2期180-185,共6页
Geotectonica et Metallogenia
基金
中国科学院知识创新工程项目(KZCXZ-SW-117)资助
关键词
构造
应力场
数值模拟
油气运聚
tectonic
stress field
numerical simulation
hydrocarbon migration and accumulation
