准噶尔盆地腹部侏罗系地震物理波场模拟
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摘要
针对准噶尔盆地腹部侏罗系埋藏深、以非构造圈闭为主、勘探难度很大的问题,建立了符合准噶尔盆地腹部侏罗系油藏实际的物理模型,在与岩心统计结果拟合达到较高精度后,进行了地震物理波场模拟。研究发现,加权阻抗属性可有效区分含流体砂层和干地层,将纵波信息分解为岩石刚性模量和弹性模量两个部分,突出了含流体地层地震属性特征,能够有效识别含流体砂层。
The Jurassic reservoir in hinterland of Junggar basin is characterized by deep burial depth, non-structural trap and big difficulty for petroleum exploration. This paper presents the physical model for the Jurassic reservoir in the basin. The simulated result matches to the field core statistical result in order to achieve high accuracy. Then the seismic wave field simulations are conducted. The study indicates that the weighted impedance attributes can be used to effectively distinguish fluid bearing sand from dry sand, through decomposition of P-wave information into rock rigid modulus and elastic modulus, thus highlighting the seismic attribute of fluid-bearing formations or sands.
The Jurassic reservoir in hinterland of Junggar basin is characterized by deep burial depth, non-structural trap and big difficulty for petroleum exploration. This paper presents the physical model for the Jurassic reservoir in the basin. The simulated result matches to the field core statistical result in order to achieve high accuracy. Then the seismic wave field simulations are conducted. The study indicates that the weighted impedance attributes can be used to effectively distinguish fluid bearing sand from dry sand, through decomposition of P-wave information into rock rigid modulus and elastic modulus, thus highlighting the seismic attribute of fluid-bearing formations or sands.
引文
[1]蔡希源,刘传虎.准噶尔盆地腹部地区油气成藏的主控因素[J].石油学报,2005,26(5):1-9.
[2]王宜林,王英民,齐雪峰.准噶尔盆地侏罗系层序地层划分[J].新疆石油地质,2001,22(5):382-385.
[3]刘传虎,庄文山.准噶尔盆地地层油气藏主控因素及勘探方向[J].新疆石油地质,2008,29(2):147-151.
[4]曲国胜,马宗晋,陈新发.论准噶尔盆地构造及其演化[J].新疆石油地质,2009,30(1):1-5.
[2]王宜林,王英民,齐雪峰.准噶尔盆地侏罗系层序地层划分[J].新疆石油地质,2001,22(5):382-385.
[3]刘传虎,庄文山.准噶尔盆地地层油气藏主控因素及勘探方向[J].新疆石油地质,2008,29(2):147-151.
[4]曲国胜,马宗晋,陈新发.论准噶尔盆地构造及其演化[J].新疆石油地质,2009,30(1):1-5.
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