复杂水网城镇区可控震源与炸药震源的一致性处理技术  

Consistency processing technology of vibroseis and explosive sources in urban areas with complex water network

作　　者：陈习峰[1] 管文华[1] 石一青[2] 庞全康[1] CHEN Xifeng;GUAN Wenhua;SHI Yiqing;PANG Quankang(Geophysical Research Institute of Jiangsu Oilfield Company,SINOPEC,Nanjing 210046,China;East China Branch of SINOPEC Geophysics Co.,Ltd.,Yangzhou 225007,China)

机构地区：[1]中国石化江苏油田分公司物探研究院,江苏南京210046 [2]中国石化地球物理华东分公司,江苏扬州225007

出　　处：《复杂油气藏》2022年第1期13-16,共4页Complex Hydrocarbon Reservoirs

摘　　要：车逻高精度三维工区地表障碍复杂,整个三维井炮正点率只有45.8%。在东部高铁、北部高邮城及西部大运河等地区大范围实施的可控震源使得地震资料联合处理面临较大的挑战,而且实际数据处理中,西部大运河区成像尤其困难。分析认为对于可控震源和炸药震源的联合处理,除相位校正以外,还要重点分析二者面临不同的激发、接收条件及可能的静校正问题。在影响范围达到10 km^(2)的大运河区,根据野外表层结构调查成果,明确了堤坝区可控震源资料时差影响因素,并构建了堤坝区表层速度模型。最终依托可控震源最小相位化校正、基于堤坝模型的静校正及剩余静校正完成了两种震源数据的相位和时差校正,提高了大运河堤坝区地震资料成像质量。The surface obstacles of the Cheluo high-precision 3D work area are complex,and the overall 3D well shot punctuality rate is only 45.8%. The large-scale implementation of vibroseis in the eastern high-speed railway,the northern Gaoyou City,and the western Grand Canal presents significant hurdles for combined seismic data processing,and imaging in the western Grand Canal area is particularly difficult in the actual data processing.In addition to phase correction,the analysis suggests that for cooperative processing of vibroseis and explosive sources,the two should focus on understanding the varied excitation and reception conditions as well as probable static correction concerns. According to the survey results of the surface structure in the field,the influencing factors of the time difference of vibroseis data in the dam region are clarified,and the surface velocity model of the dam area is constructed in the Grand Canal area with an influence range of 10 km^(2). Finally,using the minimum phase correction of the vibroseis,the static correction,and the residual static correction based on the dam model,the phase and time difference correction of the two types of source data is completed,improving the imaging quality of seismic data in the Grand Canal dam area.

关 键 词：可控震源 最小相位化 堤坝模型 静校正 

分 类 号：P631[天文地球—地质矿产勘探]