潜江凹陷新沟嘴组砂体预测技术
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摘要
论述了潜江凹陷下第三系新沟嘴组砂体预测技术。该技术首先以准层序为单元进行精细沉积微相分析,预测砂体成因类型和平面展布;然后根据已知井分析砂体在地震剖面上的外部形态、内部反射结构特征和地震属性特征,运用波阻抗反演等技术,在高分辨率地震剖面上识别和追踪对比砂体;最后采用模型正演技术检验砂体预测结果。实际应用表明,该技术对砂体的识别与预测是可信的。
A technique for predicting sandbody of Xingouzui Formation in Qianjiang Depression is described. A subsequence is used in the technique as unit to precisely analyze the sedimentary microfacies and predict the type of sandbody genesis and its plane arrangement. The external configuration, internal reflecting, structural features and seismic attributes of the sandbodies on the profile are analyzed based on known wells. The sandbodies are identified, traced and contrasted on a high resolution seismic profile by using a technique of wave impedance inversion, and then the result of sandbody prediction is checked with forward modeling . The application indicates that the technique is convincible in identifying and predicting the sandbody.
A technique for predicting sandbody of Xingouzui Formation in Qianjiang Depression is described. A subsequence is used in the technique as unit to precisely analyze the sedimentary microfacies and predict the type of sandbody genesis and its plane arrangement. The external configuration, internal reflecting, structural features and seismic attributes of the sandbodies on the profile are analyzed based on known wells. The sandbodies are identified, traced and contrasted on a high resolution seismic profile by using a technique of wave impedance inversion, and then the result of sandbody prediction is checked with forward modeling . The application indicates that the technique is convincible in identifying and predicting the sandbody.
引文
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[2] 沈守文,彭大钧,颜其彬.层序地层学预测隐蔽油气藏的原理和方法[J].地球学报,2000,21(3) :300～305．
[3] 刘护创,王文慧.吐哈盆地台北凹陷隐蔽油气藏勘探潜力分析[J].新疆石油地质.2000,21(4) :279～281．
[4] 赵力民,郎晓玲,康洪全.波阴抗反演方法在预测岩性油藏中的应用[J].石油地球物理勘探,1999,34(增刊):39～44．
[5] 丁翠平,雷安贵.岩性油藏预测技术[J].石油勘探与开发.1999,26(1) :6～9．
[6] 黄真萍,王晓华,王云专.地震信息的属性参数提取和砂体预测方法[J].石油地球物理勘探,1997,32(5) :669～682．
[7] 宋永.河流相沉积砂体预测方法研究[J].测井技术,2000,24(2) :108～109．
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