库车山地地震采集接收方法试验  

TEST OF SEISMIC RECEIVING METHOD IN KUQA AREA

作　　者：江民 周旭[2] 陆江南[2] 尚爱晖 

机构地区：[1]东方地球物理公司塔里木物探处,新疆库尔勒841000 [2]塔里木油田公司,新疆库尔勒841000

出　　处：《新疆石油天然气》2018年第1期20-26,共7页Xinjiang Oil & Gas

摘　　要：库车山地地震资料信噪比偏低,以往通常采用多个检波器组合接收的方法采集。近年来,为了促进高密度三维勘探的推广,拟采用单点接收降低勘探成本,为此开展了单点与组合接收对比试验。试验表明:受环境噪声和激发噪声影响,单点接收的单炮信噪比总是比组合接收低,特别是在激发接收条件较差或激发能量较弱时差距尤为明显;采用较大药量激发、进行叠前随机噪声衰减等措施可减小单点接收与组合接收的单炮信噪比差距。研究认为,库车山地克深区带可以采用单点接收,但需采用较大药量激发,同时辅以针对性去噪技术。The S/N ratio of the data from Kuqa Mountain, which was generally acquired using multi-receiver array for receiving previously, is low. In recent years, in order to promote the generalization of the high-density 3 Dsurvey, it is proposed to reduce the survey cost using the single point receiver. For this purpose, a comparativetest of single point receiver vs. array is carried out. The test shows that the S/N ratio of the single shot receiver data is always lower than that of the array one, especially when the source receiver condition is poorer or when thesource energy is weaker; Using larger dose excitation and pre-stack random noise attenuation can reduce the signal to noise ratio difference between single point receiving and combined receiving single shot. It is concludedthrough researches that the single point receiving technique can be applied in the Kuqa mountain area, but itneeds to be stimulated with larger doses,and the targeted seismic noise reduction technique is also adopted.

关 键 词：库车山地 地震采集 接收技术 单点接收 组合检波 

分 类 号：P631[天文地球—地质矿产勘探]