影响约束地震反演品质的因素分析

Analysis on factors affecting quality of logging constraint inversion

目的分析约束地震反演品质的因素,提高反演的品质。方法从地震反演原理、基础资料的品质、反演方法和地质约束模型及其外推控制等方面分析对地震反演品质的影响。结果提出了从提高地震品质、对测井资料预处理和构造精细解释及其模型的正确建立3方面改善反演品质的策略。结论针对性的保障措施可以最大程度地消除反演的多解性,提高反演的品质,对在波阻抗技术基础上发展起来的弹性阻抗反演品质的提高同样有借鉴意义。

Aim To analyse the factors affecting quality of well log constraint inversion to improve the quality of well log constraint inversion. Methods In the light of such aspects as the principle of logging constraint inversion, the quality of basic data, the selection of techniques for logging constrained seismic inversion and the choice of inversion parameters, the setting up of the stratigraphic framework model and the extrapolation control are factors affecting quality of logging constrained seismic inversion. Results The method has improved the quality of logging constrained seismic inversion from the aspects of enhancing the seismic quality, preprocessing well logging information, fine stucture elucidation and establishment of its model. Conclusion With the ensuring measures, the ambiguity of inversion can be eliminated, the quality of inversion is improved, and there is a same significance to enhance the inversion quality of elastic impedance that comes form the wave impedance.