南堡凹陷高柳地区二次三维地震采集技术
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摘要
南堡凹陷高柳地区原有地震资料品质较低,已不能满足该区油气资源挖潜需要,为此在该区进行了二次三维地震勘探。针对该区地表条件复杂及地下地层倾角大、断层发育、断块小且多的特点,制定了合理的施工方案,采用恢复炮点变观、炮点横向移动变观和块状特观设计等先进的地面设计施工技术,并对地震采集方法及各项参数进行了全面优化。实践表明二次三维地震剖面不仅拥有较高的信噪比,同时具有较高的分辨率,浅层资料可充分满足精细构造解释和高分辨率储集层反演需要,中、深层资料能够准确落实构造形态、进行层序地层学研究。以二次三维地震资料为基础,通过开展综合地质研究,经过少量探井、评价井的实施,新增含油面积85.5km2,三级石油地质储量25 601万t。图4表1参9
The quality of old seismic data in the Gaoliu area was very low and could not meet the technical needs of petroleum production.A second round of 3D seismic survey was carefully conducted.New acquisition solutions were designed to solve the problems of complex surface conditions,high dips of formations,highly faulted formations and small sizes of blocks.Advanced surface acquisition technologies,such as the shot-point restorable varying layout system,the shot-point lateral movement varying layout system and the block special layout system were applied.Seismic acquisition methods and the corresponding parameters were carefully optimized.The processed results of this acquired seismic data are featured with high signal to noise ratios and relatively high resolution.Shallow data are qualified for precise structural interpretation and high resolution of reservoir prediction.Medium and deep data are suitable to structural interpretation and sequence stratigraphic studies.With this seismic data,related comprehensive geological studies,and a few exploration and evaluated wells,new oil-bearing areas of 85.5km~(2) and 256.01 million tons of oil geologic reserves were discovered.
The quality of old seismic data in the Gaoliu area was very low and could not meet the technical needs of petroleum production.A second round of 3D seismic survey was carefully conducted.New acquisition solutions were designed to solve the problems of complex surface conditions,high dips of formations,highly faulted formations and small sizes of blocks.Advanced surface acquisition technologies,such as the shot-point restorable varying layout system,the shot-point lateral movement varying layout system and the block special layout system were applied.Seismic acquisition methods and the corresponding parameters were carefully optimized.The processed results of this acquired seismic data are featured with high signal to noise ratios and relatively high resolution.Shallow data are qualified for precise structural interpretation and high resolution of reservoir prediction.Medium and deep data are suitable to structural interpretation and sequence stratigraphic studies.With this seismic data,related comprehensive geological studies,and a few exploration and evaluated wells,new oil-bearing areas of 85.5km~(2) and 256.01 million tons of oil geologic reserves were discovered.
引文
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[8]周丽清,赵丽敏,赵国梁,等.高分辨率地震约束相建模[J].石油勘探与开发,2002,29(3):56-58.(ZHOU Li-qing,ZHAO Li-min,ZHAO Guo-liang,et al.Stochastic facies modeling constrained byhigh-resolution seismic data[J].Petroleum Exploration andDevelopment,2002,29(3):56-58.)
[9]乐金,刘雯林,胡素云,等.综合配套的勘探工程技术研究[J].石油勘探与开发,2001,28(3):37-40.(YUE Jin,LIU Wen-lin,HU Su-yun,et al.On the match of exploration engineeringtechnologies[J].Petroleum Exploration and Development,2001,28(3):37-40.)
[2]邹才能,贾承造,赵文智,等.松辽盆地南部岩性-地层油气藏成藏动力和分布规律[J].石油勘探与开发,2005,32(4):125-130.(ZOU Cai-neng,JIA Cheng-zao,ZHAO Wen-zhi,et al.Accumulation dynamics and distribution of lithostratigraphicreservoirs in South Songliao Basin[J].Petroleum Exploration andDevelopment,2005,32(4):125-130.)
[3]Bertelli L,Mascarin B,Salvador L.Planning and field technolo-gies for 3D land acquisition in highly tilled and populated areas:Today'sresult and future trends[J].First Break,1993,11(1):23-32.
[4]Peter C Ashton,Brad Bacon,Christian Deplante,et al.3D seismicsurvey design[J].Oilfield Review,1994,6(2):19-32.
[5]张研,张颖,孙夕平,等.地震储集层预测技术在不同勘探开发阶段的应用[J].石油勘探与开发,2006,33(1):59-63.(ZHANG Yan,ZHANG Ying,SUN Xi-ping,et al.Application of seismicreservoir prediction techniques in different exploration anddevelopment stages[J].Petroleum Exploration and Development,2006,33(1):59-63.)
[6]范哲清,梁慧兰,赵春段.黄骅坳陷大港滩海区复杂三维地震资料解释方法[J].石油勘探与开发,2004,31(6):62-65.(FAN Zhe-qing,LIANG Hui-lan,ZHAO Chun-duan.Intricate 3-D seismicinterpretation in shallow water area of Huanghua Sag,Dagangtransition zone[J].Petroleum Exploration and Development,2004,31(6):62-65.)
[7]谌卓恒,傅全有,康永尚.考虑地震测网密度预测小断层的改进图解法[J].石油勘探与开发,1998,25(4):87-89,92.(CHENZhuo-heng,FU Quan-you,KANG Yong-shang.An improvedgraphic method for predicting small-scale faults in consideration ofseismic grid density[J].Petroleum Exploration and Development,1998,25(4):87-89,92.)
[8]周丽清,赵丽敏,赵国梁,等.高分辨率地震约束相建模[J].石油勘探与开发,2002,29(3):56-58.(ZHOU Li-qing,ZHAO Li-min,ZHAO Guo-liang,et al.Stochastic facies modeling constrained byhigh-resolution seismic data[J].Petroleum Exploration andDevelopment,2002,29(3):56-58.)
[9]乐金,刘雯林,胡素云,等.综合配套的勘探工程技术研究[J].石油勘探与开发,2001,28(3):37-40.(YUE Jin,LIU Wen-lin,HU Su-yun,et al.On the match of exploration engineeringtechnologies[J].Petroleum Exploration and Development,2001,28(3):37-40.)
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