石臼坨凸起低幅度构造-岩性圈闭识别及刻画技术
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摘要
岩性圈闭识别及精细刻画是岩性勘探获得突破的关键。首先分析了石臼坨凸起区低幅度构造形成背景及岩性圈闭发育特征,针对新近系砂体横向连片、纵向叠置的展布特征,在层序地层格架约束下,利用地层切片和地震属性分析技术开展岩性圈闭的定性识别;再结合波阻抗反演以及90°相位转换技术进行储层预测及单砂体描述;最后利用叠前弹性反演技术进行油气检测,指出有利的含烃范围。该技术系列在石臼坨凸起区岩性勘探中取得了良好的应用效果,具有一定的推广应用价值。
The identification and fine description of lithologic traps are the key to the breakthroughs of lithological exploration.In this paper,the low amplitude structure forming background of Shijiutuo uplift and the lithologic trap development characteristics have been firstly analyzed.According to the distribution characteristics of Neogene sand body which is superimposed vertically and located one next to another in lateral.Under the constraint of sequence stratigraphic framework,by use of stratal slice and seismic attribute technology,the qualitative identification of lithologic traps has been carried out.Then in combination with impedance inversion and 90° phase shift technology,the reservoir prediction and single sand body description have been conducted.Finally,by using the pre-stack elastic inversion technology,the oil and gas detection has been made and the favorable hydrocarbon range has been pointed out.These set of technologies have achieved good application effect in the lithological exploration on Shijiutuo uplift,with strong promotion value in application.
The identification and fine description of lithologic traps are the key to the breakthroughs of lithological exploration.In this paper,the low amplitude structure forming background of Shijiutuo uplift and the lithologic trap development characteristics have been firstly analyzed.According to the distribution characteristics of Neogene sand body which is superimposed vertically and located one next to another in lateral.Under the constraint of sequence stratigraphic framework,by use of stratal slice and seismic attribute technology,the qualitative identification of lithologic traps has been carried out.Then in combination with impedance inversion and 90° phase shift technology,the reservoir prediction and single sand body description have been conducted.Finally,by using the pre-stack elastic inversion technology,the oil and gas detection has been made and the favorable hydrocarbon range has been pointed out.These set of technologies have achieved good application effect in the lithological exploration on Shijiutuo uplift,with strong promotion value in application.
引文
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[2]邓津辉,王应斌,姜利群,等.黄河口凹陷渤中34-1复杂断块区构造特征及储层预测[J].石油地质与工程,2007,21(3):4-6.
[3]朱伟林,李建平,周心怀,等.渤海新近系浅水三角洲沉积体系与大型油气田勘探[J].沉积学报,2008,26(4):575-582.
[4]加东辉、吴小红、赵利昌,等.浅水三角洲相沉积构成特征——以渤中25-1南油田为例[J].河南石油,2005,19(2):4-7
[5]曲霞,卢佳岚,商建立,等.储层地震反演技术在南阳凹陷张店油田的应用[J].石油地质与工程,2006,20(5):24-26.
[6]Zeng H L,Backus M M.Interpretive advantages of 90°-phase wavelets:Modeling(PartⅠ)[J].Geophysics,2005,70(3):7-15.
[7]Zeng H L,Backus M M.Interpretive advantages of 90°-phase wavelets:Modeling(PartⅡ)[J].Geophysics,2005,70(3):17-24.
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