摘要
南阳凹陷主要勘探目的层埋藏较深,断裂发育、构造破碎,现有地震资料的信噪比和分辨率不能满足油气勘探需求。为此,针对南阳凹陷的地震地质条件,结合地震波动方程模拟、照明分析以及观测系统采集脚印分析等技术,在兼顾各项采集设计要求与工作效率的条件下,重新设计了三维地震观测系统。实际应用结果表明,采用上述观测方法获得的地震资料质量较原资料有明显的改善。新采集的资料剖面断裂系统成像清晰,目的层及其以上各反射层特征清楚,分辨率和信噪比均有较大的提高。
The exploration targets of Nanyang depression is characterized by deeply buried depth and well developed fractures,making the S/ N ration and resolution of the current seismic data not able to satis- fy the requirement for oil-gas exploration.Aiming at the seismic and geologic conditions of Nanyang depression and taking the ac- quisition design acquirements and working efficiency into considera- tion,we redesigned,in combination with the seismic wave equation modeling and the illumination analysis and acquisition footprint a- nalysis,3-Dseismic survey system for Nanyang depression.The actual application results show that the data quality acquired by the above observation method has been obviously improved.The frac- ture system of the newly acquired profiles images clearly,the char- acteristics of targets and the reflection layers above them are clear, and the resolution and S/N largely improved.
出处
《石油物探》
EI
CSCD
2008年第5期498-504,共7页
Geophysical Prospecting For Petroleum
基金
国家高技术研究发展计划(863)项目(2006AA062240)资助
关键词
三维地震采集
观测系统设计
速度模型
采集脚印
南阳凹陷
3-D seismic acquisition
Survey design
velocity model
acquisition footprint
Nanyang depression
作者简介
马义忠（1963-），男，高级工程师，博士在读，主要研究方向为地震采集观测系统设计。
