|
|
|
| Method of cable floating correction based on combination of gather coherence and ghost reflection traveltime |
| YAN Zhonghui1,2, WANG Xiaojie1,2, XU Huaning1,2, CHEN Shanshan1,2, YANG Jiajia1,2, YANG Chuansheng1,2 |
1. Qingdao Institute of Marine Geology, China Geological Survey, Qingdao, Shandong 266237, China;
2. Laboratory for Marine Mineral Resources, Laoshan Laboratory for Marine Science and Technology, Qingdao, Shandong, 266237, China |
|
|
|
|
Abstract In the high-resolution and small trace distance marine acquisition，due to the inherent problems of equipment，the cable unequal floating effect will be caused，there are some problems，for instance，phase axistremor and uneven NMO correction will be shown on the gather，which cannot achieve the effect of in-phase superposition，and reduce the imaging accuracy of seismic data.The conventional residual moveout correction method is difficult to accurately identify whether residual moveout is caused by the unequal floating of the cable，which will cause errors in the correction results. This paper presents a cable floating correction method based on combination of gather coherence and ghost reflection traveltime. Firstly，the sinking depth of the actual cable is calculated by using the interactive pick-up ghost reflection travel time，and then the initial moveout correction is obtained.Then the reference moveout correction is obtained by the gather coherence and the model reference trace.Finally，the moveout correction is weighted selected by the cross-correlation analysis between the two，and the moveout is applied after smoothing，the phase axis of the data achieves the effect of phase stacking，in order to improve the resolution and imaging accuracy of seismic data. In this paper，combined with the test analysis of model data and actual processing，compared with the conventional cross-correlation cable float correction method，the results show that the correction method in this paper is more accurate and effective in float correction.
|
|
Received: 14 February 2023
|
|
|
|
|
|
| [1] |
LEBAS E,LE FRIANT A,BOUDON G,et al.Multiple widespread landslides during the long-term evolution of a volcanic island: insights from high-resolution seismic data,Montserrat,Lesser Antilles[J].Geoche-mistry,Geophysics,Geosystems,2011,12(5): Q05006.
|
| [2] |
骆迪,蔡峰,吴志强,等.海洋短排列高分辨率多道地震高精度成像关键技术[J].地球物理学报,2019,62(2): 730-742.LUO Di,CAI Feng,WU Zhiqiang,et al.The key technologies of marine small scale high resolution multichannel seismic high-precision imaging[J].Chinese Journal of Geophysics,2019,62(2): 730-742.
|
| [3] |
HOROZAL S,LEE G H,YI B Y,et al.Seismic indicators of gas hydrate and associated gas in the Ulleung basin,East sea (Japan sea) and implications of heat flows derived from depths of the bottom-simulating reflector[J].Marine Geology,2009,258(1/4): 126-138.
|
| [4] |
张光学,张明,杨胜雄,等.海洋天然气水合物地震检测技术及其应用[J].海洋地质与第四纪地质,2011,31(4): 51-58.ZHANG Guangxue,ZHANG Ming,YANG Sheng-xiong,et al.Application of seismic detecting technique to marine gas hydrate survey[J].Marine Geology & Quaternary Geology,2011,31(4): 51-58.
|
| [5] |
EIKEN O,HAUGEN G U,SCHONEWILLE M,et al.A proven method for acquiring highly repeatable towed streamer seismic data[J].Geophysics,2003,68(4): 1303-1309.
|
| [6] |
云美厚,赵秋芳,李晓斌.地震分辨率思考与高分辨率勘探对策[J].石油地球物理勘探,2022,57(5):1250-1262.YUN Meihou,ZHAO Qiufang,LI Xiaobin.Seismic resolution thinking and high-resolution exploration countermeasures[J].Oil Geophysical Prospecting,2022,57(5): 1250-1262.
|
| [7] |
SWAN H W.Velocities from amplitude variations with offset[J].Geophysicists,2001,66(6): 1735-1743.
|
| [8] |
郭树祥.分频剩余静校正方法及应用效果分析[J].石油地球物理勘探,2001,36(6): 735-739.GUO Shuxiang.Method of frequency-divisional residual statics and its application analysis[J].Oil Geophysical Prospecting,2001,36(6): 735-739.
|
| [9] |
周鹏,刘志斌,张益明,等.动校剩余时差处理方法及应用[J].地球物理学进展,2015,30(5): 2349-2353.ZHOU Peng,LIU Zhibin,ZHANG Yiming,et al.The processing method and application of the residual moveout NMO[J].Progress in Geophysics,2015,30(5): 2349-2353.
|
| [10] |
马光凯,周铮铮,耿伟峰,等.海洋拖缆数据检波器移动时差校正[J].石油地球物理勘探,2020,55(2):266-271.MA Guangkai,ZHOU Zhengzheng,GENG Wei-feng,et al.Marine streamer data geophone moving time difference correction[J].Oil Geophysical Prospecting,2020,55(2): 266-271.
|
| [11] |
刘仕友,宋维琪,闫安菊.基于稀疏重建分析的道集优化方法[J].石油物探,2023,62(2):297-304.LIU Shiyou,SONG Weiqi,YAN Anju.A gather optimization method based on sparse reconstruction analysis[J].Geophysical prospecting Petroleum,2023,62(2): 297-304.
|
| [12] |
RESHEF M.Depth migration from irregular surfaces with depth extrapolation methods[J].Geophysics,1991,56(1): 119-122.
|
| [13] |
许自强,李添才,王用军,等.倾斜电缆地震资料处理关键技术及其效果分析[J].中国海上油气,2015,27(6): 10-18.XU Ziqiang,LI Tiancai,WANG Yongjun,et al.Key technology for slant streamer seismic data processing and its application analysis[J].China Offshore Oil and Gas,2015,27(6): 10-18.
|
| [14] |
HINKLEY D,BEAR G W,DAWSON C.Prestack gather flattening for AVO[C].SEG Technical Program Expanded Abstracts,2004,23: 271-273.
|
| [15] |
GULUNAY N,GAMAR F,HOEBER H,et al.Robust residual gather flattening[C].SEG Technical Program Expanded Abstracts,2007,26: 229-233.
|
| [16] |
周鹏,张益明,刘志斌,等.地震道集优化方法及应用[J].石油地球物理勘探,2016,51(2): 232-237.ZHOU Peng,ZHANG Yiming,LIU Zhibin,et al.Seismic gather optimization method and its application[J].Oil Geophysical Prospecting,2016,51(2): 232-237.
|
| [17] |
张波.精细地震成像技术在昆北地区的应用[J].石油地球物理勘探,2022,57(增刊1):89-96.ZHANG Bo.Application of fine seismic imaging technology in Kunbei area[J].Oil Geophysical Prospecting,2022,57 (S1): 89-96.
|
| [18] |
曲寿利.AVO分析中的剩余时差校正[J].石油地球物理勘探,1991,26(4): 523-528.QU Shouli.Residual moveout correction in AVO analysis[J].Oil Geophysical Prospecting,1991,26(4): 523-528.
|
| [19] |
苑春方,余钦范,王彦春,等.动校正剩余时差的估计与校正[J].石油物探,2002,41(3): 317-320.YUAN Chunfang,YU Qinfan,WANG Yanchun,et al.Estimation and removal of residual normal moveout[J].Geophysical Prospecting for Petroleum,2002,41(3): 317-320.
|
| [20] |
林伯香,孙建国.相位替换法剩余时差校正[J].石油物探,2001,40(3): 15-22.LIN Baixiang,SUN Jianguo.Residual moveout correction by using phase replacement[J].Geophysical Prospecting for Petroleum,2001,40(3): 15-22.
|
| [21] |
王开燕,刘丹,王妍,等.基于相位替换的高分辨率叠加方法及其应用[J].地球物理学进展,2015,30(4): 1785-1790.WANG Kaiyan,LIU Dan,WANG Yan,et al.High-resolution stacking method and its application based on phase-replacement[J].Progress in Geophysics,2015,30(4): 1785-1790.
|
| [22] |
曾华会,王小卫,苏勤,等.混合震源高精度匹配处理技术在中国西部复杂障碍区的应用[J].石油地球物理勘探,2021,56(3): 476-484.ZENG Huahui,WANG Xiaowei,SU Qin,et al.Application of high-precision matching processing techno-logy of mixed source in complex obstacle areas in western China[J].Oil Geophysical Prospecting,2021,56(3): 476-484.
|
| [23] |
刘汉卿,罗明,孙辉,等.应用匹配追踪算法的高分辨率处理方法[J].石油地球物理勘探,2022,57(6):1325-1331.LIU Hanqing,LUO Ming,SUN Hui,et al.High resolution processing method using matching pursuit algorithm [J].Oil Geophysical Prospecting,2022,57 (6): 1325-1331.
|
| [24] |
石战战,夏艳晴,周怀来,等.一种联合SBL和DTW的叠前道集剩余时差校正方法[J].岩性油气藏,2019,31(3): 86-94.SHI Zhanzhan,XIA Yanqing,ZHOU Huailai,et al.Residual moveout correction of prestack seismic gathers based on SBL and DTW[J].Lithologic Reservoirs,2019,31(3): 86-94.
|
| [25] |
WU C,WANG T,WANG H,et al.Improving the quality of common-image gathers using DTW and local similarity[C].SEG Technical Program Expanded Abstracts,2019,38: 4336-4340.
|
| [26] |
熊晓军,简世凯,李翔,等.叠前道集优化处理技术及其应用[J].西南石油大学学报(自然科学版),2017,39(6): 55-62.XIONG Xiaojun,JIAN Shikai,LI Xiang,et al.Prestack gather optimization technique and application[J].Journal of Southwest Petroleum University (Science & Technology Edition),2017,39(6): 55-62.
|
| [27] |
徐锦承,张剑锋.基于偏移成像道集的剩余静校正方法[J].地球物理学报,2016,59(2): 655-663.XU Jincheng,ZHANG Jianfeng.Residual static correction based on migrated gathers[J].Chinese Journal of Geophysics,2016,59(2): 655-663.
|
| [28] |
张汛汛,张繁昌,刘汉卿.基于快速匹配追踪算法的地震道集剩余时差校正[J].石油物探,2015,54(4): 420-426.ZHANG Xunxun,ZHANG Fanchang,LIU Hanqing.Seismic gathers residual moveout correction based on fast matching pursuit algorithm[J].Geophysical Prospecting for Petroleum,2015,54(4): 420-426.
|
| [29] |
刘本晶,梁兴,侯艳,等.叠前道集优化技术在页岩储层预测中的应用[J].石油地球物理勘探,2018,53(增刊2): 189-196.LIU Benjing,LIANG Xing,HOU Yan,et al.Application of prestack gather optimization technology in shale reservoir prediction[J].Oil Geophysical Prospecting,2018,53(S2): 189-196.
|
| [30] |
ZHAO J,LI J,CHENG J.Seismic gathers residual static correction based on matching pursuit algorithm[C].SEG Technical Program Expanded Abstracts,2019,38: 2918-2922.
|
| [31] |
WILLIS A,BUSONO P.Application of cross correlation of angle stacks for velocity quality control in seismic imaging[C].SEG Technical Program Expanded Abstracts,2018,37: 5203-5207.
|
|
|
|
2023, Vol. 58 
