测井约束反演在坨71井区的应用

The application of logging constrained inversion in the well block of Tuo-71

地震反演中约束模型的建立,特别是多井、断裂发育区的三维复杂约束模型的建立,是地震波阻抗约束反演中的关键技术环节,对反演质量有着重要影响。本文运用地震、地质综合分析方法,系统地研究了测井资料垂向井孔轨迹约束、地质层位横向控制约束、断块约束、地层沉积模式和接触关系约束等三维约束模型的关键要素。通过对胜利油田胜坨地区三维复杂区块实际约束模型的建立和反演,证明了该方法行之有效,大大提高了反演结果的精度,取得了良好的应用效果。

Establishing a constrained model, especially a 3D complex constrained model for the area with multi-well and developed faults is a key factor in the seismic wave impedance constrained inversion, which will make important influence on the quality of inversion. In the paper, utilizing the synthetic analysis method with seismic and geology, we studied the key factors of 3D constrained model with the logging vertical wellhead track constraining, stratigraphic transversal controlled constraining, fault block constraining as well as the stratigraphic sentimental pattern and contact relationship constraining.Setting up the constrained model and inversion for the 3D complex block in the area of Shengtuo of Shengli oil field proved that the method is effective and improved greatly the inversion accuracy and obtained good application results.