【摘要】 地质研究表明,额济纳旗及其邻区的潜力油气勘探目的层为中生界(以白垩系为主)和古生界(石炭-二叠系)地层,但前期的地球物理勘探工作主要针对中生界.为了落实石炭-二叠系地层分布,为油气资源远景调查评价提供依据,近两年加大了以石炭-二叠系为主要目的层的地震采集处理解释工作力度.分析认为该区地震资料干扰波极其发育,资料信噪比很低,同时局部构造复杂,从长远的油气资源识别和评价出发,应尽量减少对有效信号的损害.因此,资料处理过程中选取相对保真性的去噪方法显得尤为重要.通过实际资料处理表明,所选取的模型正演辅助识别干扰波、分频异常振幅压制、自适应面波衰减及聚束滤波多次波压制技术振幅相对保持较好,同时合理选择处理参数,使得资料的信噪比得到明显提高.该套叠前保真去噪技术同样适用于国内外其它油气田.更多还原

【Abstract】 Geological studies have shown that its adjacent areas Ejinaqi potential oil and gas exploration target for the Mesozoic(mainly in Cretaceous)and Paleozoic(Carboniferous-Permian)strata,but preliminary geophysical exploration work is mainly targeted at the Mesozoic.Past two years,in order to implement the Carboniferous-Permian strata distribution,investigation and assessment of prospective oil and gas resources provide the basis for the Carboniferous-Permian,increased seismic acquisition,processing and interpretation efforts.Analysts believe that the area is extremely disturbing wave seismic data development,data signal to noise ratio is very low,while the local structure is complicated,long-term oil and gas resources from the identification and evaluation of departure,should minimize the damage a valid signal.Therefore,data processing,select the corresponding fidelity de-noising method is particularly important.Through the actual data processing show that the selected forward modeling to assist in identifying the interference wave,frequency anomaly amplitude suppression technology,adaptive surface wave attenuation technique,beamforming multiple suppression techniques amplitude remained relatively good.at the same time,a reasonable choice of processing parameters so that the data signal to noise ratio has been significantly improved. The set of pre-stack fidelity noise suppression technique also applies to other domestic and foreign oil and gas fields.更多还原