二维地震连片相对保幅处理及储层预测技术在塔西南地区的应用

塔西南麦盖提斜坡西段发育多目的层的岩性圈闭,其主要目的层为古近系、石炭系和志留系。就目前的研究状况,要评价岩性地层的储层特征,只有通过对不同时期、不同震源类型、不同采集方式采集的二维地震资料做连片相对保幅处理和地震反演储层预测研究来实现。文章通过对全区资料采用连片相对保幅处理的技术进行了统一基准面静校正、组合去噪、地表一致性反褶积等环节的精细处理,使不同品质资料的时差、振幅、频率、相位及波形等特征得到了全面校正,满足了该区岩性圈闭研究的要求; 通过对目的层段进行属性分析和地震反演等研究,加深了对该区岩性地层圈闭的认识。

Application of relative amplitude method to merging processing of 2-D seismic data and reservoir prediction technique in southwestern Tarim

Exploration and investigation indicate that there is a structure zone of multi-target stratum subtle traps at Markit slope of southwestern Tarim in the recent years, and its main target strata are the Paleogene, the Carboniferous and the Silurian. To realize the evaluation of lithologic reservoir characters as the present research requirement, amount of 2 D seismic data from different sources, geophones and acquisition are dealt with merging relative preserved amplitude processing and reservoir prediction research of seismic inversion. In this paper, all of the data in this area are accurately processed with the relative amplitude techniques, such as static correction, pre-stack attenuation, surface consistency processing method. Good effects are proved by the actual processing result and all seismic sections with high consistent. Overall corrections for amplitude, time difference, frequency, phase and waveform are achieved. Those new seismic sections have already got the application in subtle traps research.