Application of Kirchhoff Prestack Migration Technology on Interpretation of Quasi Three Dimensional Seismic Data of Gas Hydrate

Abstract

Abstract:

In the course of processing quasi three dimensional seismic data of gas hydrate, the effect of poststack migration is unsatisfactory resulting from the influences of the irregularity of geometry, intense changes of folds and spatial aliasing. This paper studied the present development status of migration imaging on interpretation of quasi three dimensional seismic data of gas hydrate, and concluded the problems of poststack migration and analyzed the characteristics of main prestack migration algorithms. It is believed that Kirchhoff integral method is little effected by the irregularity of geometry and intense changes of velocity and is favorable to prestack migration processing of quasi three dimensional seismic data of gas hydrate. Kirchhoff integral method prestack migration was applied to process the quasi three dimensional seismic data collected in Shenhu area in northern South China Sea and obtained better effect than poststack migration.

Key words: natural gas hydrate, quasi three dimension, poststack migration, Kirchhoff prestack migration

CLC Number:

P631.4

PAN Wen-Yong, LEI Xin-Hua, SHA Zhi-Bin, ZHANG Xin, LEI Xin-Min, LIU Hao-Jie. Application of Kirchhoff Prestack Migration Technology on Interpretation of Quasi Three Dimensional Seismic Data of Gas Hydrate[J]. Geoscience, 2010, 24(5): 986-992.

References

［1］张光学，黄永样，陈邦彦，等.海域天然气水合物地震学［M］.北京：海洋出版社,2006：27-56.
［2］赵庆献，韩立国，伍忠良，等.天然气水合物准三维地震勘探电缆动态定位精度研究［J］.吉林大学学报：地球科学版，2009， 39(5)：936-941.
［3］Michael Riedel.3D seismic investigations of northern Cascadia marine gas hydrate［D］. Victoria: University of Victoria, 2001.
［4］Matthew J H. 3D seismic imaging and fluid flow analysis of gas hydrate province［D］.Laramie：University of Wyoming, 2005.
［5］Pecher I A, Minshull T A, Singh S C, et al. Velocity structure of a bottom simulating reflector offshore Peru: Results from full waveform inversion［J］. Earth and Planetary Science Letters, 2001, 139：459-469.
［6］Stoffa P L, Fokkema J T, de Luma Freire R M, et al. Splitstep Fourier migration［J］. Geophysics, 1990, 55(4): 410-421.
［7］王棣，王华中. 叠前时间偏移方法综述［J］.勘探地球物理进展, 2004,27(5):310-320.
［8］Cordsen A. Narrowversus wideazimuth land 3D seismic surveys［J］. The Leading Edge, 2002,21(8): 764-770.
［9］Sherif R E, Geldart L P. Exploration Seismology［M］. Cambridge: Cambridge University Press, 1995：20-25.
［10］Jon F C, James L Black. Basic Earth Imaging ［M］. Stanford: Stanford University Press, 2005：1-17.
［11］王锡文，秦广胜，陈君，等. 叠前克希霍夫成像技术及其应用［J］. 江汉石油学院学报, 2004, 26(6): 52-55.
［12］郭时光.Kirchhoff公式的一种推导［J］.四川理工学院学报：自然科学版,2005,18(2): 99-102.
［13］张永刚.地震波场数值模拟方法［J］.石油物探, 2003, 42(2): 143-148.
［14］Alistair R B. Seismic attributes and their classification［J］.The Leading Edge,1996, 15(10): 1090.
［15］Quiney C，Steve S. Seismic attributes technology for reservoir forecasting and monitoring［J］. The Leading Edge, 1997, 16(5): 445-456.
［16］姚伯初，杨木壮，吴时国，等.中国海域的天然气水合物资源［J］.现代地质，2008，22(3)：333-341.
［17］陆敬安，杨胜雄，吴能友，等.南海神狐海域天然气水合物地球物理测井评价［J］.现代地质，2008，22(3)：447-451.
［18］沙志彬，王宏斌，杨木壮，等.天然气水合物成矿带的识别技术研究［J］.现代地质，2008，22(3)：438-446.

[1]	WANG Shengyi, ZOU Changchun, PENG Cheng, WANG Hongcai, LU Jingan, KANG Dongju, WU Caowei, LAN Xixi, XIE Yingfeng. Quantitative Characterization of Hydrate Occurrence Mode in Marine Pore-filling Gas Hydrate Reservoirs: Constraints from Acoustic and Resistivity Log Data [J]. Geoscience, 2023, 37(01): 127-137.
[2]	GUO Zihao, LI Canping, CHEN Fengying, GOU Limin, WANG Hongtao, ZENG Xianjun, LIU Yilin, TIAN Xinyu. Effect of Methane from Natural Gas Hydrate Decomposition on Marine Life [J]. Geoscience, 2023, 37(01): 138-152.
[3]	HU Gaowei, WU Nengyou, LI Qi, BAI Chenyang, WAN Yizhao, HUANG Li, WANG Daigang, LI Yanlong, CHEN Qiang. Quantitative Method for Selecting Marine Natural Gas Hydrate Production Test Targets [J]. Geoscience, 2022, 36(01): 202-211.
[4]	ZHOU Yalong, YANG Zhibin, ZHANG Fugui, ZHANG Shunyao, SUN Zhongjun, WANG Huiyan. The Analysis of Stability and Abnormal Reproducibility of Geochemical Exploration of Natural Gas Hydrate in Qilian Mountain [J]. Geoscience, 2019, 33(06): 1314-1324.
[5]	ZHOU Yalong, SUN Zhongjun, YANG Zhibin, ZHANG Fugui, ZHANG Shunyao. Geochemical Characteristics and Implications of Helium and Neon in Natural Gas Hydrates Deposits in the Muli Permafrost, Qilian Mountains [J]. Geoscience, 2018, 32(05): 995-1002.
[6]	ZHANG Fugui, TANG Ruiling, YANG Zhibin, ZHU Jinghua, ZHOU Yalong, SUN Zhongjun. Geochemical Investigation and Prospective Evaluation of Natural Gas Hydrates in the Permafrost of Mohe Basin [J]. Geoscience, 2018, 32(05): 1003-1011.
[7]	ZHANG Fugui, WANG Chengwen, ZHANG Shunyao, ZHOU Yalong, TANG Ruiling. Thermoluminescence:An New Tool for Natural Gas Hydrate Exploration [J]. Geoscience, 2018, 32(05): 1080-1088.
[8]	ZHANG Shunyao, YANG Fan, ZHANG Fugui, SHI Zeming, YANG Zhibin, ZHOU Yalong, WANG Huiyan. Research on the Methane Emission and Carbon Isotope of Permafrost Wetland in Qinghai-Tibet Plateau [J]. Geoscience, 2018, 32(05): 1089-1096.
[9]	. Tectonic Subsidence History of Sanlutian Mining Field in Muli,Qinghai [J]. Geoscience, 2015, 29(5): 1096-1102.
[10]	. Structural Fracture Characteristics of Cores from Gas-hydrate Drillholes in Sanlutian of Muli Coalfield, Qinghai [J]. Geoscience, 2015, 29(5): 1087-1095.
[11]	. Distribution and Reservoir Characteristics of Gas Hydrates in Sanlutian of Muli, Qinghai [J]. Geoscience, 2015, 29(5): 1035-1046.
[12]	WEN Huai-jun, LU Zhen-quan, LI Yong-hong, WANG Wei-chao, LIU Wen-jin, LI Xi. New Advance on Gas Hydrate Survey and Research in Sanlutian of Muli, Qinghai [J]. Geoscience, 2015, 29(5): 983-994.
[13]	. 3D Seismic Detection for Natural Gas Hydrates in Muli Area, Qinghai [J]. Geoscience, 2015, 29(5): 1130-1137.
[14]	. Field Study on Gas Hydrates in Sanlutian of Muli in Qinghai Based on Real-time Identification Method [J]. Geoscience, 2015, 29(5): 1144-1150.
[15]	. Application of Gas Logging to Natural Gas Hydrate Prognosis in Sanlutian of Muli, Qinghai [J]. Geoscience, 2015, 29(5): 1151-1156.