超浅层油气藏地震勘探方法——以泌阳凹陷北部斜坡外带为例
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摘要
在泌阳凹陷北部斜坡外带,勘探目的层极浅,断层发育。为落实小构造、识别小断层以及开展岩性解释研究工作,寻找超浅层油气藏,项目研究采用地震勘探采集、处理和解释一体化的思路,以面向地下目标对象的地震采集为设计方针,通过基于地质地球物理模型科学论证三维采集观测系统,研制开发新的资料处理软件;应用先进的地质解释方法,所采集的资料在保证信噪比的基础上,大大提高了分辨率,改善了地震资料的反射品质,实现了高精度成像。在新发现的圈闭上部署了一批地质浅井,首次发现地层不整合油气藏,到见到良好的油气显示,整体达到新增探明和控制2138×104t的规模储量,大大拓展了泌阳凹陷北部斜坡带的勘探领域。
In the outside of northern Biyang slope, the target zone of exploration is very shallow, where faults are grown. To ascertain the small tectonics, recognize small faults and conduct a research on lithologic interpretation, look for super-shallow reservoirs, the integration of seismic exploration and acquisition, process and interpretation and as well as the conception for designing seismic acquisition with the orientation of underground object are used to develop a new software for data processing based on a 3 dimensional acquisition and survey system for scientifically demonstrating the geologic and geophysical models. Advanced geologic interpretation method is used to implement a high precision imaging, by which the resolution is greatly raised, the quality of seismic data reflection is improved, on the basis of ensuring the signal-to-noise ratio of data acquisition, a batch of geologic shallow wells are deployed on the newly found traps. Unconformable reservoirs are first discovered with perfect show of oil and gas, the newly identified reserves and control of 2138×10 4 t reserves are achieved. The exploration field is greatly expanded in the north slope of Biyang Depression.
In the outside of northern Biyang slope, the target zone of exploration is very shallow, where faults are grown. To ascertain the small tectonics, recognize small faults and conduct a research on lithologic interpretation, look for super-shallow reservoirs, the integration of seismic exploration and acquisition, process and interpretation and as well as the conception for designing seismic acquisition with the orientation of underground object are used to develop a new software for data processing based on a 3 dimensional acquisition and survey system for scientifically demonstrating the geologic and geophysical models. Advanced geologic interpretation method is used to implement a high precision imaging, by which the resolution is greatly raised, the quality of seismic data reflection is improved, on the basis of ensuring the signal-to-noise ratio of data acquisition, a batch of geologic shallow wells are deployed on the newly found traps. Unconformable reservoirs are first discovered with perfect show of oil and gas, the newly identified reserves and control of 2138×10 4 t reserves are achieved. The exploration field is greatly expanded in the north slope of Biyang Depression.
引文
[1]陆基孟·地震勘探原理[M]·东营:石油大学出版社,1993·
[2]刘学伟·基于地震数据处理的三维地震观测系统设计[J]·石油地球物理勘探,2004,39(4):375~380·
[3]刘景彦·泌阳凹陷北部斜坡高精度三维地震采集方法研究与效果分析[J]·石油物探,2002,41(1):59~61·
[4]陈树文·三维叠前深度偏移的准三维算法研究[J]·地球物理学进展,2001,16(4):23~28·
[5]吴明华·叠前深度偏移资料处理解释方法研究[J]·石油物探,2004,(4):331~336·
[6]李玲·全三维解释方法探讨与实践[J]·石油地球物理勘探,1996,31(4):495~508·
[7]居春荣·GY凹陷SXF地区复杂断块处理解释一体化[J]·石油地球物理勘探,2001,36(6):740~744·
[2]刘学伟·基于地震数据处理的三维地震观测系统设计[J]·石油地球物理勘探,2004,39(4):375~380·
[3]刘景彦·泌阳凹陷北部斜坡高精度三维地震采集方法研究与效果分析[J]·石油物探,2002,41(1):59~61·
[4]陈树文·三维叠前深度偏移的准三维算法研究[J]·地球物理学进展,2001,16(4):23~28·
[5]吴明华·叠前深度偏移资料处理解释方法研究[J]·石油物探,2004,(4):331~336·
[6]李玲·全三维解释方法探讨与实践[J]·石油地球物理勘探,1996,31(4):495~508·
[7]居春荣·GY凹陷SXF地区复杂断块处理解释一体化[J]·石油地球物理勘探,2001,36(6):740~744·
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