Abstract：At present, most offshore oilfields, especially in the Bohai Bay Basin, have entered into development stage with high water cut. This paper proposes a constrained modeling technology based on seismic inversion and sedimentary microfacies. Taking the SZ36-1 Oilfield in the Bohai Bay Basin as an example, a porosity model is built by using synthetic seismic records as a bridge, sedimentary microfacies as a "hard constraint" and seismic inversion as a "soft constraint". The method has technical advantages as follows:① The geological model based on double constraints is consistent with actual geological understanding. The model hasn't the "trace" of the hard constraint. It is not only conformed to the development of sandstone lithofacies, but also can predict inter-well development.② The model has higher accuracy and the a-verage coincidence rate of posterior wells is up to 92.51%. In addition, it can reduce the uncertainty and the limitations of a geological model. The model based on double constraints is helpful to provide strong technical support for improving waterflooding oil recovery.
张海翔, 李占东, 李阳, 赵佳彬, 庞鸿, 姜洪福. “双控”地质建模技术的实践与认识——以渤海湾盆地SZ36-1油田为例[J]. 石油地球物理勘探, 2021, 56(3): 603-611.
ZHANG Haixiang, LI Zhandong, LI Yang, ZHAO Jiabin, PANG Hong, JIANG Hongfu. Practice and understanding of double controlled geological modeling technology: A case study on SZ36-1 Oilfield in the Bohai Bay Basin. Oil Geophysical Prospecting, 2021, 56(3): 603-611.
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