观测系统定量评价在南阳凹陷白秋地区的应用
|
摘要
南阳凹陷白秋地区以寻找岩性+构造油气藏为主,对地震资料的横向分辨率和信噪比要求较高。通过研究复杂介质条件下地震波传播特性,在波动方程等设计技术理论指导下,对高精度三维观测系统性能进行定量评价,并根据地质任务的要求,进行精确设计和参数论证分析。在复杂介质条件下,以波动方程正演模拟、面论证为基础的观测系统设计,使得该区的高精度三维地震勘探从采集设计阶段开始就满足叠前偏移处理和岩性解释等要求,减少采集脚印,达到改善成像精度的目的。从白秋地区新采集的剖面看,波组特征明显,断面清晰,主要目的层信噪比高,新采集的地震资料能够满足复杂断块群构造的研究需要。
The exploration of oil and gas in Baiqiu Area of Nanyang Depression was to search for lithologic and structural reservoirs,the lateral resolution and the signal-to-noise ratio of seismic data were highly required.By theoretical research on the seismic wave propagation property under the complex media conditions,and guiding by wave equation and others new design technologic theory,a 3-D observation system with high accuracy was quantitatively evaluated,and based on the geological requirements,it was designed accurately and the parameters were demonstrated.Under complex media conditions,an observation system is designed according to the wave equation forward simulation and the surface demonstration,which could meet the requirements of the pre-stack migration treatment and lithologic interpretation at the initial stage of data acquisition design for a high precision of 3D seismic exploration in the area.The acquisition footprint is reduced for the purpose of improving imaging precision.Seeing from the data acquisition profile in the area,the wave combination property is obvious,fault plain is clear high signal-to-noise ratio and the new acquisition data can meet the research demands of the structures of the fault block groups.
The exploration of oil and gas in Baiqiu Area of Nanyang Depression was to search for lithologic and structural reservoirs,the lateral resolution and the signal-to-noise ratio of seismic data were highly required.By theoretical research on the seismic wave propagation property under the complex media conditions,and guiding by wave equation and others new design technologic theory,a 3-D observation system with high accuracy was quantitatively evaluated,and based on the geological requirements,it was designed accurately and the parameters were demonstrated.Under complex media conditions,an observation system is designed according to the wave equation forward simulation and the surface demonstration,which could meet the requirements of the pre-stack migration treatment and lithologic interpretation at the initial stage of data acquisition design for a high precision of 3D seismic exploration in the area.The acquisition footprint is reduced for the purpose of improving imaging precision.Seeing from the data acquisition profile in the area,the wave combination property is obvious,fault plain is clear high signal-to-noise ratio and the new acquisition data can meet the research demands of the structures of the fault block groups.
引文
[1]林学庆,罗家群,陈萍,等.南阳凹陷北部斜坡带有利探目标分析[J].河南石油,2002,16(6):11~13.
[2]孙伟家,符力耘,碗学俭.基于相位编码的地震照明度分析[J].石油地球物理勘探,2007,42(5):539~543.
[3]张林科,覃丽君,张国寿,等.基于地震属性的地震相分析思路[J].工程地球物理学报,2010,7(6):694~698.
[4]Cordsen A,Pelrce J W.陆上三维地震勘探的设计与施工[M].俞寿朋,译.北京:石油工业出版社,1996.16~46.
[5]Vermeer G J O.3D seismic survey design[J].Expanded Abstracts of 72nd Annual Internat SEG Mtg,2002,19~32.
[6]A J别尔克豪特.地震偏移——波场外推法声波成像(第五章,第六章)[M].马在田,等译.北京:石油工业出版社,1983.
[7]Berkhout A J.Pushing the limits of seismic imaging,Part I:Prestack migration in terms of double dynamicfocusing[J].Geophysics,1997,62(3):937~954.
[8]碗学俭,葛雪钦,张松平,等.三维观测系统采样均匀性分析方法的研究[J].中国石油勘探,2009,(6):42~43.
[2]孙伟家,符力耘,碗学俭.基于相位编码的地震照明度分析[J].石油地球物理勘探,2007,42(5):539~543.
[3]张林科,覃丽君,张国寿,等.基于地震属性的地震相分析思路[J].工程地球物理学报,2010,7(6):694~698.
[4]Cordsen A,Pelrce J W.陆上三维地震勘探的设计与施工[M].俞寿朋,译.北京:石油工业出版社,1996.16~46.
[5]Vermeer G J O.3D seismic survey design[J].Expanded Abstracts of 72nd Annual Internat SEG Mtg,2002,19~32.
[6]A J别尔克豪特.地震偏移——波场外推法声波成像(第五章,第六章)[M].马在田,等译.北京:石油工业出版社,1983.
[7]Berkhout A J.Pushing the limits of seismic imaging,Part I:Prestack migration in terms of double dynamicfocusing[J].Geophysics,1997,62(3):937~954.
[8]碗学俭,葛雪钦,张松平,等.三维观测系统采样均匀性分析方法的研究[J].中国石油勘探,2009,(6):42~43.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心