【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。更多还原

【Abstract】 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.更多还原