运用地震奇异值分解技术寻找开发区剩余岩性油气藏
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摘要
经过十几年的开发,平湖油气田生产形势严峻。勘探新区、深部油气层的新发现、开发区现有开采层段中剩余的岩性油气藏是平湖油气田产能接替的主攻目标依据平湖油气田沉积特征研究及油气田开发实践表明开发区平湖组中段是岩性油气藏发育的有利区域。运用地震主成分分析和奇异值分解技术对平中段储层进行分析,在放鹤亭构造放一断块P4、P6、P7储层北部无钻井区域发现了多个具有分流河道特征的地质体响应平湖油气田生产特征表明这些地质体具有有利的成藏条件,是现有开采层段内剩余的岩性油气藏,对未来改善平湖油气田生产形势具有重要意义。
After producing of more than ten years,the production situation of the Pinghu Oil and Gas Field is becoming more and more serious.The new findings in deeper or new area and the residual lithologic reservoirs in present producing intervals of developed area have been the main targets for resource succession.According to the researching on local sedimentary characteristics and development experience of developing,the middle member of Pinghu formation is the most likely zone for lithologic reservoirs.Using Singular Value Decomposition method on seismic data to make principal component analysis of the middle member of Pinghu formation, there are some targets with the characteristics of channels have been found in the north part of interval P4,P6 and P7.The producing situation have proved that these targets have favorable conditions for hydrocarbon accumulation and are residual lithologic reservoirs in present producing intervals,which is significant for the improvement of production situation of Pinghu Oil and Gas Field.
After producing of more than ten years,the production situation of the Pinghu Oil and Gas Field is becoming more and more serious.The new findings in deeper or new area and the residual lithologic reservoirs in present producing intervals of developed area have been the main targets for resource succession.According to the researching on local sedimentary characteristics and development experience of developing,the middle member of Pinghu formation is the most likely zone for lithologic reservoirs.Using Singular Value Decomposition method on seismic data to make principal component analysis of the middle member of Pinghu formation, there are some targets with the characteristics of channels have been found in the north part of interval P4,P6 and P7.The producing situation have proved that these targets have favorable conditions for hydrocarbon accumulation and are residual lithologic reservoirs in present producing intervals,which is significant for the improvement of production situation of Pinghu Oil and Gas Field.
引文
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[4]AN Ping.Case studies on oil and water wells separation and gas sand prediction in a coal formation using wavelet selection and volume-based seismic waveform decomposition[C].SEG 78th Annual International Meeting,Las Vegas,Nevada,November 2008:498-502.
[5]刘成鑫.东海平湖油气田平湖组沉积相研究[J].海洋石油, 2010,30(2):9-13.
[2]Lanczos C.Linear Differential Operators[M].by the Society for Industrial and Applied Mathematics.D.Van Nostrand Co.,1961.
[3]AN Ping.Case studies on stratigraphic interpretation and sand mapping using volume-based seismic waveform decomposition[C].2006 SEG Annual Meeting,New Orleans, Louisiana,October 2006.
[4]AN Ping.Case studies on oil and water wells separation and gas sand prediction in a coal formation using wavelet selection and volume-based seismic waveform decomposition[C].SEG 78th Annual International Meeting,Las Vegas,Nevada,November 2008:498-502.
[5]刘成鑫.东海平湖油气田平湖组沉积相研究[J].海洋石油, 2010,30(2):9-13.
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