摘要
针对常州地区锡北构造逆断层下伏地层地震资料品质较差、成像不理想问题,结合DS1井钻井地层和前期解释方案构建二维地质模型。基于常规观测系统分别在流沙层的上、中、下及旁边进行模拟激发并实施照明分析,沿目的层界面提取照明度、确定阴影区。根据地震波的互易性原理,沿目的层界面在阴影区两侧进一步通过逆向照明分析,确定地表优势能量的接收范围,在优势接收范围内优化采集参数并进行有效的模拟分析,使阴影区照明度得到明显提高,成像质量得到改善。通过实际剖面的对比验证,证实照明分析对锡北构造采集参数优化设计是可行的,能够提高采集质量。
In order to solve the problem of poor quality of seismic data and poor imaging in the underlying fault of Xibei structure in Changzhou area, a two-dimensional Geological model was constructed by means of the DS1 well drilling and the pre-interpretation scheme.Based on the conventional observation system,simulation excitation and illumination analysis were carried out on the upper,middle,lower and side of the quicksand layer,and the illumination was extracted and the shadow region was determined along the target layer interface.According to the principle of the reciprocity of seismic waves,the receiving range of the superior energy of the sur-face was determined by reverse illumination analysis on both sides of the shadow region along the interface of the target layer.Illumination and images in the shadow region were improved by optimization of the acquisition parameters and effective simulation analysis within the superior receiving range.It proved that illumination analysis is feasible for optimization design of the acquisition parameters of the Xibei structure,and it can improve the quality of acquisition through the comparison and verification of the actual section.
作者
刘文峰
李蒙
王亮
刘强
LIU Wenfeng;LI Meng;WANG Liang;LIU Qiang(Geophysics Corporation,Ltd.,Sinopec,Nanjing 211100,Jiangsu,China;No.2 Institute of Geological & Mineral Resources Survey of Henan,Zhengzhou 450000,Henan,China)
出处
《河南理工大学学报（自然科学版）》
CAS
北大核心
2019年第2期58-64,共7页
Journal of Henan Polytechnic University（Natural Science）
基金
国家科技重大专项项目(2016ZX05061)
中石化石油工程技术服务有限公司先导试验项目(SG16-51K)
关键词
照明分析
锡北构造
地震采集
观测系统
优化设计
illumination analysis
Xibei structure
seismic acquisition
observation system
optimization design
