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利用测井资料中垂向分辨率和地震资料横向密集采样特点的综合约束反演技术,极大地提高了波阻抗剖面的分辨率。反演依靠一维合成声波测井的结果,以地震地质解释的成果为约束,顺层横向递推形成初始波阻抗模型。然后,以声波测井曲线的外包络为约束,不仅加快了反演的收敛速度,而且使反演结果与实际值更加接近。该方法在陡倾斜和多断层的复杂地质条件下,比其他宽带约束反演方法具有更好的实用性。
Using the comprehensive constraint inversion technique of vertical resolution of well logging data and horizontal intensive sampling of seismic data, the resolution of wave impedance profile is greatly improved. The inversion relies on the results of one-dimensional synthetic sonic logging and is constrained by the results of seismic geology interpretation. The initial wave impedance model is formed by recursion along the horizontal plane. Then, using the outer envelope of the sonic logging curve as a constraint, not only accelerates the convergence rate of the inversion, but also brings the inversion result closer to the actual value. This method is more practicable than other methods of broadband constrained inversion under steeply inclined and multi-fault complex geological conditions.