中国石油高密度地震技术的实践与未来
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摘要
自2003年开始,中国石油天然气集团公司在中国西部、东部开展了高密度二维地震试验。2006年以来在塔中地区、准噶尔盆地西北缘、吐哈盆地丘陵油田、松辽盆地、辽河油田欢喜岭、冀东油田滩海等重点地区开展了高密度三维地震试验,满覆盖面积共计654 km2,其中全数字高密度三分量三维地震覆盖面积100 km2,在高覆盖次数、新地震解释处理技术等保障下取得了良好效果。技术发展使得高密度地震大规模应用已成为可能。用成像道密度来衡量观测系统是否为高密度地震采样更符合叠前成像技术要求,在满足空间采样"充分、均匀、对称、连续"的原则下,结合地质目标和要解决的问题,开展采集、处理、解释一体化等工作是中国石油高密度地震技术未来发展方向。图6表2参12
China National Petroleum Corporation(CNPC) carried out 2D high-density seismic surveys in western and eastern China from 2003,and 3D high-density seismic surveys in Tazhong area of Tarim Basin,Northwest margin of Junggar Basin,Qiulin Oilfield of Tuha Basin,Songliao Basin,Huanxiling of Liaohe Oilfield and beach area of Jidong Oilfield from 2006.The total coverage area of 3D high-density seismic surveys was 654 km2 of which 100 km2 was 3D and 3C digital seismic.The surveys achieved preferable results under the high-coverage data acquisition and new data processing technologies.Technical advancement makes it possible to apply large-scale high-density seismic surveys.We can use the imaging trace density to scale whether the geometry is high-density seismic sampling,in order to meet the requirement of pre-stack data processing.In the principle of spatial sampling with "sufficiency,equality,symmetry and continuity",and in combination with the geological targets and the problems to be solved,the integrated performance of acquisition,processing and interpretation shall be the orientation of high-density seismic technologies in CNPC in future.
China National Petroleum Corporation(CNPC) carried out 2D high-density seismic surveys in western and eastern China from 2003,and 3D high-density seismic surveys in Tazhong area of Tarim Basin,Northwest margin of Junggar Basin,Qiulin Oilfield of Tuha Basin,Songliao Basin,Huanxiling of Liaohe Oilfield and beach area of Jidong Oilfield from 2006.The total coverage area of 3D high-density seismic surveys was 654 km2 of which 100 km2 was 3D and 3C digital seismic.The surveys achieved preferable results under the high-coverage data acquisition and new data processing technologies.Technical advancement makes it possible to apply large-scale high-density seismic surveys.We can use the imaging trace density to scale whether the geometry is high-density seismic sampling,in order to meet the requirement of pre-stack data processing.In the principle of spatial sampling with "sufficiency,equality,symmetry and continuity",and in combination with the geological targets and the problems to be solved,the integrated performance of acquisition,processing and interpretation shall be the orientation of high-density seismic technologies in CNPC in future.
引文
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[12]贾爱林,郭建林,何东博.精细油藏描述技术与发展方向[J].石油勘探与开发,2007,34(6):691-695.Jia Ailin,Guo Jianlin,He Dongbo.Perspective of development indetailed reservoir description[J].Petroleum Exploration andDevelopment,2007,34(6):691-695.
[2]Newman P,Mahoney J T.Patterns with a pinch of salt[J].Geophysical Prospecting,1973,21:197-219.
[3]Ongkiehong L,Huizer W.Dynamic range of the seismic system[J].First Break,1987,12(5):435-439.
[4]Ongkiehong L,Askin H J.Towards the universal seismicacquisition technique[J].First Break,1988,13(2):46-63.
[5]Jack I.Land seismic technology:Where do we go from here?[J].First Break,2003,28(5):41-44.
[6]Burger P.Comparison between single and multi-channel cabletelemetry systems in harsh terrains[J].First Break,2000,25(2):53-59.
[7]Heath R G.Impacting low-impact seismic[J].Hart's ECTP,2003,40:60-64.
[8]Blacquiere G,Ongkiehong L.Single sensor recording:Anti-aliasfiltering,perturbations and dynamic range[R].Tulsa:SEG 70thAnnual International Meeting,2000.
[9]Heath R G.Land seismic:Needs and answers[J].First Break,2004,29(6):65-72.
[10]张广娟.高密度采集及低信噪比地区的室内组合分析[A].石油物探西部技术交流会[C].北京:石油工业出版社,2004.Zhang Guangjuan.Analysis of high-density seismic acquisitionand in-house array processing in low signal to noise ratio area[A].Geophysical Technical Seminar of Western China[C].Beijing:Petroleum Industry Press,2004.
[11]王喜双,董世泰,王梅生.全数字地震勘探技术应用效果及展望[J].中国石油勘探,2007,12(6):32-36.Wang Xishuang,Dong Shitai,Wang Meisheng.Application ofdigital seismic exploration technologies in PetroChina[J].ChinaPetroleum Exploration,2007,12(6):32-36.
[12]贾爱林,郭建林,何东博.精细油藏描述技术与发展方向[J].石油勘探与开发,2007,34(6):691-695.Jia Ailin,Guo Jianlin,He Dongbo.Perspective of development indetailed reservoir description[J].Petroleum Exploration andDevelopment,2007,34(6):691-695.
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