提高川西海相地震勘探精度采集方法探讨  

THE DISCUSSION OF ACQUISITION METHODS TO IMPROVE SEISMIC EXPLORATION ACCURACY IN THE MARINE STRATA OF WESTERN SICHUAN

作　　者：涂远艮[1] 李华科[1] 

机构地区：[1]西南油气分公司勘探开发研究院德阳分院,四川德阳618000

出　　处：《物探化探计算技术》2013年第4期417-423,371,共7页Computing Techniques For Geophysical and Geochemical Exploration

摘　　要：由于川西地区海相地层埋藏深度较深,储层厚度较薄,目前采集资料分辨率无法满足勘探要求。这里总结了其它地区高精度勘探经验,展示了川西地区海相地层进行高精度勘探方法探索效果,包括激发、接收、观测系统方法试验效果,并结合该区的地震地质条件进行了吸收衰减分析,解释高精度勘探方法探索应用效果。通过方法探索和原因分析,得出了通过"小道距、高覆盖次数"的高精度地震勘探提高资料信噪比,从而提高川西海相地层勘探精度的结论,为今后川西地区海相地层地震勘探提供了借鉴经验。The resolution of the gathers meteria does not meet the requirements of exploration in the western Sichuan region duo to deeper burial depth of marine strate and thinner of the reservoir thickness.The article summarizes experience of high-precision exploration experience in other regions and also shows the high-precision exploration methods for the marine strate of the western Sichuan region,including excitation,receiving,observing the effect of systematic approach to test.The exploration effect of the high-resolution exploration method is explained by combining with seismic geological conditions in the area of attenuation analysis.Our study indicate that high signal to noise data could be obtained by high-precision seismic exploration with high coverage and small channel spacing in the marine strate of the western Sichuan region.

关 键 词：高精度勘探 分辨率 吸收衰减 激发接收 观测系统 

分 类 号：P631.4[天文地球—地质矿产勘探]