组合静校正方法在修武盆地中的应用及效果
|
摘要
江西修武盆地页岩气勘探区近地表起伏剧烈,低降速带变化大,导致原始地震资料中存在严重的静校正问题。常规静校正技术存在一定的假设前提,其适应性在该区受到了限制,难以取得理想的效果。为此,提出了组合静校正思路,逐步地解决该地区地震资料的静校正问题。首先,利用初至波交互迭代剩余静校正技术优化更新野外静校正量,消除表层调查带来的中长波长静校正误差问题;然后,基于地表一致性剩余静校正技术,解决高频短波长静校正问题;最后,通过模拟退火剩余静校正和非地表一致性剩余静校正技术的联合应用,解决不满足地表一致性假设条件造成的残余静校正量问题。经实践检验证实,该组合静校正技术可以解决修武盆地地区静校正问题,将闭合差均控制在4 ms以内,较大地改善叠加剖面的成像质量。
The exploration region in Xiuwu Basin has rugged near surface,and its low velocity layers vary greatly,resulting that there exists serious static problem.Common static correction methods have some certain assumptions,resulting that it's of great difficulty to achieve the desired result by single static correction method in this area.Static problem has become a bottleneck restricting the region's further exploration work.Therefore,based on the near surface conditions,we proposed a joint static correction idea of combining various static correction methods to solve the serious static problem.Firstly,the first-break residual static correction method is used to refine the field statics,eliminating the errors caused by field surface survey and solving serious middle to long wavelength static problems.Then,surface-consistent residual static correction is used to correct the high-frequency residual short wavelength statics.Due to the assumption's limitation,surface-consistent residual static correction method often fails in low SNR region or the place which can not meet the assumption of surface-consistent condition.To make up for this deficiency,finally,simulated annealing and non-surface-consistent residual static correction are combined to correct the residual statics.The joint static correction idea is applied in the Xiuwu Basin and the final result shows it can effectively solve the serious static problem,and the mis-tie is less than 4 ms,greatly improving seismic imaging.
The exploration region in Xiuwu Basin has rugged near surface,and its low velocity layers vary greatly,resulting that there exists serious static problem.Common static correction methods have some certain assumptions,resulting that it's of great difficulty to achieve the desired result by single static correction method in this area.Static problem has become a bottleneck restricting the region's further exploration work.Therefore,based on the near surface conditions,we proposed a joint static correction idea of combining various static correction methods to solve the serious static problem.Firstly,the first-break residual static correction method is used to refine the field statics,eliminating the errors caused by field surface survey and solving serious middle to long wavelength static problems.Then,surface-consistent residual static correction is used to correct the high-frequency residual short wavelength statics.Due to the assumption's limitation,surface-consistent residual static correction method often fails in low SNR region or the place which can not meet the assumption of surface-consistent condition.To make up for this deficiency,finally,simulated annealing and non-surface-consistent residual static correction are combined to correct the residual statics.The joint static correction idea is applied in the Xiuwu Basin and the final result shows it can effectively solve the serious static problem,and the mis-tie is less than 4 ms,greatly improving seismic imaging.
引文
1庞飞,包书景,任收麦,等.修武盆地下寒武统页岩气富集条件及有利区预测.东北石油大学学报,2014;38(5):23-30Pang Fei,Bao Shujing,Ren Shoumai,et al.Shale gas accumulation conditions and favorable areas of the Lower Cambrian in Xiuwu Basin.Journal of Northeast Petroleum University,2014;38(5):23-30
2李宜润,姜振学,刘伟伟,等.修武盆地构造热演化史对下寒武统页岩含气性的影响.科学技术与工程,2016;16(34):44-51Li Yirun,Jiang Zhenxue,Liu Weiwei,et al.The effect of the tectonic thermal evolution history to gas content of Lower Cambrian Shales at Xiuwu Basin.Science Technology&Engineering,2016;16(34):44-51
3夏一军,胡向阳,魏水健.页岩气勘探开发中地球物理技术的应用.地球物理学进展,2015;30(4):1798-1803Xia Yijun,Hu Xiangyang,Wei Shuijian.Applications of geophysics in shale gas exploration and exploitation.Progress in Geophysics,2015;30(4):1798-1803
4方勇,骆宗强,尹川.澳大利亚Georgina盆地元古代和古生代页岩特征及其页岩气远景研究.东华理工大学学报(自然科学版),2013;36(3):287-291Fang Yong,Luo Zongqiang,Yin Chuan.Geological features of paleozoic and proterozoic shales and shale gas exploration potential in Georgina Basin,Australia.Journal of East China Institute of Technology(Natural Science),2013;36(3):287-291
5喻岳钰,曹代勇,邢春颖,等.黄土塬区模型约束折射静校正技术应用研究.地球物理学进展,2016;31(3):1373-1380Yu Yueyu,Cao Daiyong,Xing Chunying,et al.Application of the technology of model constraint refraction statics on loess area.Progress in Geophysics,2016;31(3):1373-1380
6于豪.折射波静校正与层析静校正技术适用性分析.地球物理学进展,2012;27(6):2577-2584Yu Hao.Applicability analysis of refraction static correction and tomographic inversion static correction.Progress in Geophysics,2012;27(6):2577-2584
7熊定钰.复杂地表静校正方法研究及应用.成都:成都理工大学,2012Xiong Dingyu.Static methods on rugged topography:investigation and application.Chengdu:Chengdu University of Technology,2012
8吴杰,苏勤,王建华.层析静校正技术在柴北缘地区的应用.岩性油气藏,2008;20(3):79-82Wu Jie,Su Qin,Wang Jianhua.Application of tomographic static correction in northern margin of Qaidam Basin.Litholigy Reservoirs,2008;20(3):79-82
9杨城增,金东民,梁殿文,等.长波长静校正问题的识别与解决方法---以鄂尔多斯黄土塬地震资料为例.地球物理学进展,2016;31(5):2212-2218Yang Chengzeng,Jin Dongmin,Liang Dianwen,et al.Method of identification and solution about long-wavelength static correction:a case study from the seismic data in Ordos loess plateau.Progress in Geophysics,2016;31(5):2212-2218
10林伯香,孙晶梅,徐颖,等.几种常用静校正方法的讨论.石油物探,2006;45(4):367-372Lin Boxiang,Sun Jingmei,Xu Ying,et al.Static correction approaches being frequently applied.Geophysical Prospecting for Petroleum,2006;45(4):367-372
11胡自多,贺振华,王宇超,等.综合静校正技术及其在川东高陡构造区应用效果.天然气地球科学,2010;21(6):1046-1053Hu Ziduo,He Zhenhua,Wang Yuchao,et al.Comprehensive static correction and its application for high-steep structure in East Sichuan Basin.Natural Gas Geoscience,2010;21(6):1046-1053
12王孝.西部复杂地表条件下静校正方法研究.成都:成都理工大学,2011Wang Xiao.The study of static correction in the west with complex surface condition.Chengdu:Chengdu University of Technology,2011
13吴波,徐天吉,唐建明,等.三种反射剩余静校正方法对比研究与应用.石油物探,2012;51(2),172-177Wu Bo,Xu Tianji,Tang Jianming,et al.The comparsion and application of three reflection residual static correction methods.Geophysical Prospecting for Petroleum,2012;51(2):172-177
14张红梅,吕小林,刘洪.改进的约束单纯形-模拟退火剩余静校正.地球物理学进展,2004;19(2):341-347Zhang Hongmei,Lv Xiaolin,Liu Hong.The improved method of simplex-simulated annealing residual statics.Progress in Geophysics,2004;19(2):341-347
15赵峰,郑鸿明,杨晓海,等.地震数据处理中静校正对动校正速度的影响.新疆石油地质,2004;25(4):390-393Zhao Feng,Zheng Hongming,Yang Xiaohai,et al.Effect of static correction on stack velocity in seismic data processing.Xinjiang Petroleum Geology,2004;25(4):390-393
16唐汉平.基准面选取对地震静校正结果影响分析与应用.煤炭技术,2015;34(5):92-94Tang Hanping.Analysis and application of impact of datum selection to seismic static correction result.Coal Technology,2015;34(5):92-94
2李宜润,姜振学,刘伟伟,等.修武盆地构造热演化史对下寒武统页岩含气性的影响.科学技术与工程,2016;16(34):44-51Li Yirun,Jiang Zhenxue,Liu Weiwei,et al.The effect of the tectonic thermal evolution history to gas content of Lower Cambrian Shales at Xiuwu Basin.Science Technology&Engineering,2016;16(34):44-51
3夏一军,胡向阳,魏水健.页岩气勘探开发中地球物理技术的应用.地球物理学进展,2015;30(4):1798-1803Xia Yijun,Hu Xiangyang,Wei Shuijian.Applications of geophysics in shale gas exploration and exploitation.Progress in Geophysics,2015;30(4):1798-1803
4方勇,骆宗强,尹川.澳大利亚Georgina盆地元古代和古生代页岩特征及其页岩气远景研究.东华理工大学学报(自然科学版),2013;36(3):287-291Fang Yong,Luo Zongqiang,Yin Chuan.Geological features of paleozoic and proterozoic shales and shale gas exploration potential in Georgina Basin,Australia.Journal of East China Institute of Technology(Natural Science),2013;36(3):287-291
5喻岳钰,曹代勇,邢春颖,等.黄土塬区模型约束折射静校正技术应用研究.地球物理学进展,2016;31(3):1373-1380Yu Yueyu,Cao Daiyong,Xing Chunying,et al.Application of the technology of model constraint refraction statics on loess area.Progress in Geophysics,2016;31(3):1373-1380
6于豪.折射波静校正与层析静校正技术适用性分析.地球物理学进展,2012;27(6):2577-2584Yu Hao.Applicability analysis of refraction static correction and tomographic inversion static correction.Progress in Geophysics,2012;27(6):2577-2584
7熊定钰.复杂地表静校正方法研究及应用.成都:成都理工大学,2012Xiong Dingyu.Static methods on rugged topography:investigation and application.Chengdu:Chengdu University of Technology,2012
8吴杰,苏勤,王建华.层析静校正技术在柴北缘地区的应用.岩性油气藏,2008;20(3):79-82Wu Jie,Su Qin,Wang Jianhua.Application of tomographic static correction in northern margin of Qaidam Basin.Litholigy Reservoirs,2008;20(3):79-82
9杨城增,金东民,梁殿文,等.长波长静校正问题的识别与解决方法---以鄂尔多斯黄土塬地震资料为例.地球物理学进展,2016;31(5):2212-2218Yang Chengzeng,Jin Dongmin,Liang Dianwen,et al.Method of identification and solution about long-wavelength static correction:a case study from the seismic data in Ordos loess plateau.Progress in Geophysics,2016;31(5):2212-2218
10林伯香,孙晶梅,徐颖,等.几种常用静校正方法的讨论.石油物探,2006;45(4):367-372Lin Boxiang,Sun Jingmei,Xu Ying,et al.Static correction approaches being frequently applied.Geophysical Prospecting for Petroleum,2006;45(4):367-372
11胡自多,贺振华,王宇超,等.综合静校正技术及其在川东高陡构造区应用效果.天然气地球科学,2010;21(6):1046-1053Hu Ziduo,He Zhenhua,Wang Yuchao,et al.Comprehensive static correction and its application for high-steep structure in East Sichuan Basin.Natural Gas Geoscience,2010;21(6):1046-1053
12王孝.西部复杂地表条件下静校正方法研究.成都:成都理工大学,2011Wang Xiao.The study of static correction in the west with complex surface condition.Chengdu:Chengdu University of Technology,2011
13吴波,徐天吉,唐建明,等.三种反射剩余静校正方法对比研究与应用.石油物探,2012;51(2),172-177Wu Bo,Xu Tianji,Tang Jianming,et al.The comparsion and application of three reflection residual static correction methods.Geophysical Prospecting for Petroleum,2012;51(2):172-177
14张红梅,吕小林,刘洪.改进的约束单纯形-模拟退火剩余静校正.地球物理学进展,2004;19(2):341-347Zhang Hongmei,Lv Xiaolin,Liu Hong.The improved method of simplex-simulated annealing residual statics.Progress in Geophysics,2004;19(2):341-347
15赵峰,郑鸿明,杨晓海,等.地震数据处理中静校正对动校正速度的影响.新疆石油地质,2004;25(4):390-393Zhao Feng,Zheng Hongming,Yang Xiaohai,et al.Effect of static correction on stack velocity in seismic data processing.Xinjiang Petroleum Geology,2004;25(4):390-393
16唐汉平.基准面选取对地震静校正结果影响分析与应用.煤炭技术,2015;34(5):92-94Tang Hanping.Analysis and application of impact of datum selection to seismic static correction result.Coal Technology,2015;34(5):92-94