可控震源升降频同步扫描高效采集技术及其应用效果  

High Efficiency Acquisition Technology for Synchronous Scanning of Vibroseis Up/Down Frequency and Its Application Effect

作　　者：卢光年 孙晓英 孙梦 刘阳 Lu Guangnian;Sun Xiaoying;Sun Meng;Liu Yang(Exploration Division,PetroChina Tuha Oilfield Company,Hami,Xinjiang 839009,China;Teachers College,Xinjiang Vocational University,Urumqi,Xinjiang 830000,China;Tuha Geophysical Exploration Division,PetroChina Bureau of Geophysical Prospecting,Hami,Xinjiang 839009,China)

机构地区：[1]中国石油吐哈油田分公司勘探事业部,新疆哈密839009 [2]新疆职业大学师范学院,新疆乌鲁木齐830000 [3]中国石油东方地球物理公司吐哈物探处分公司,新疆哈密839009

出　　处：《石油工业技术监督》2022年第10期20-23,共4页Technology Supervision in Petroleum Industry

摘　　要：吐哈探区近年地震勘探的部署面积都不大(70~350 km^(2)),随着炮道密度增长,采用以往可控震源高效采集技术交替扫描、滑动扫描已经不能满足生产的需求,2019年引入动态扫描高效采集技术,生产效率虽然大幅提高,但勘探面积不能满足距离分离同步扫描技术的要求,限制了动态扫描优势的充分发挥,为此创新研发可控震源升降频同步扫描技术。该技术利用同样扫描参数不同扫描方式,在保证激发相关子波一致的前提下,实现不受距离限制两组震源不同位置同步激发和分离,理论上生产效率可以比采用滑动扫描提高一倍。进一步开展了准东石钱滩试验线和吐哈山前带生产线的采集,优化了实现方式。如果未来能够替换动态扫描中距离分离同步扫描技术,可以有效缩短震源空间布置距离,更适合面积不大的高密度三维勘探。In recent years,the area of seismic exploration in Tuha exploration area is 70~350 km^(2).With the increase of shot and trace density,the previous high-efficiency vibroseis acquisition technologies of alternating scanning and sliding scanning can no longer meet the needs of production.In 2019,the dynamic scanning high-efficiency acquisition technology was introduced.Although the produc⁃tion efficiency was greatly improved,the exploration area could not meet the requirements of the distance separation synchronous scan⁃ning technology,which limited the full play of the advantages of dynamic scanning.For this reason,a synchronous scanning technology of vibroseis up and down frequency is developed.By using the same scanning parameters and different scanning methods,the synchro⁃nous excitation and separation of two groups of sources at different positions without distance limitation is achieved on the premise of ensuring the consistency of excitation related wavelet.Theoretically,the production efficiency can be doubled compared with that of sliding scanning.The collection of Shiqiantan test line and Tuha piedmont belt production line in Zhundong was further carried out,and the implementation mode was optimized.If the distance separation synchronous scanning technology in dynamic scanning can be replaced in the future,the spatial arrangement distance of vibroseis can be effectively shortened,which is more suitable for high-densi⁃ty 3D exploration in small area.

关 键 词：可控震源 高效采集技术 升降同步扫描技术 高密度三维勘探 

分 类 号：P631.4[天文地球—地质矿产勘探]