摘要
为了探讨海洋可控源电磁法(MCSEM)监测海底油气后期开发的可行性,根据油气运移及开采过程中储层电阻率变化特点,设计并利用MCSEM一维正演程序试算不同的海底电阻率模型,包括海底沉积层仅有储层的简单模型和储层上方有高阻覆盖层的复杂模型,分别将接收极沉放海底和油气钻井,分析电偶极子源在海底和井中的响应特征.结果表明:传统深海频率域接收模式MVO曲线能较好地反应储层电阻率的变化;井中接收频率域电场对于高阻层位的变化非常敏感;浅海下MCSEM在不同偏移距的时域电场信号既能分离空气波干扰,又能很好地反应储层电阻率变化.海洋可控源电磁法对于海底油气后期监测具有潜在优势.
This paper adopts marine controlled-source electromagnetic method(MCSEM)1D forward program to discuss the possibility of taking advantage of MCSEM to monitor submarine oil and gas while being exploited.Based on the characteristic of variedness in reservoir resistivity while hydrocarbon migration,we design and calculate different kinds of submarine resistivity models by putting receivers on seafloors and wells.We discuss the electromagnetic response of dipole.The discussion result shows that adopting MCSEM to monitor later development of submarine oil and gas has huge potential advantage.
出处
《东北石油大学学报》
CAS
北大核心
2014年第1期31-36,3,共6页
Journal of Northeast Petroleum University
基金
国家自然科学基金青年基金项目(41304116)
