２００４年ＳＥＧ年会地震勘探技术最新进展

首先根据近５年ＳＥＧ年会发表的文章数量变化分析了勘探地球物理技术的发展趋势，按地震采集、地震数据处理、偏移、岩石物理等技术分类简单介绍了最新进展。采集技术主要介绍了数字检波器的优势、点震源／点检波器陆地连续采集及处理技术和一种金属炸药。地震数据处理技术主要介绍了非垂直出射的静校正技术、减小采集脚印影响和提高空间分辨率的叠前道集插值算法、反射面元（ＣＲＳ）地震反射成像及绕射波分离技术。 偏移技术主要介绍了基于波动方程的照明分析、克希霍夫叠前深度偏移中的照明角补偿法、平面波偏移成像、用有限元有限差分法进行正演和成像及绕射波成像技术。岩石物理主要介绍了人造砂岩制造技术、碳酸盐岩中渗透率与速度间关系的建立及碳酸钙沉积的时延超声测量结果。

Advances in exploration geophysical technologies in 2004 SEG annual international meeting

A review of 2004 SEG annual international meeting was given in this paper. Firstly, the development trend of exploration geophysics was analyzed in terms of the number of technical papers published over past 5 annual meetings. Secondly, the latest advances in seismic acquisition, seismic data processing, migration and rock physics was briefly introduced. In seismic acquisition, we introduced the advantages of digital receiver, point-source/point-receiver land continuing acquisition and processing, as well as a metallic explosive. In seismic data processing, non-vertical emergence static correction, prestack interpolation for eliminating acquisition footprints and improving spatial resolution, common-reflection-surface (CRS)-based seismic reflection imaging, and diffraction separation were described. As for migration, wave equation based illumination analysis, illumination angle compensation in Kirchhoff depth migration, plane wave migration, modeling and migration by finite element and finite difference method, and scattering imaging were discussed. In rock physics, topics included the development of artificial sandstone, the relation between velocity and permeability in carbonate rocks, and time-lapse ultrasonic survey prior to and after the chemical deposition of calcium carbonate.