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如果能够将油藏的流体运移和变化情况制成图件的话,对于油田的优化生产,特别是对提高采收率具有十分重要的意义。然而,常规的监测技术,例如测井、压力分析或者地面地震等技术都不能详细地揭示油藏内部的变化情况。在很多情况下,采收率的效果和主要的生产过程都要通过井的生产数据来推断。流体管线、地层间隔等特殊问题仍没有得到解决。最新开发的井间成像技术可以产生高分辨率的二维和三维油藏变化图像,这一技术已用于油田提高采收率过程中。对实际的油藏结构及流体性质的进一步了解有助于优化生产。文章介绍了循环注汽操作技术在加利福尼亚的应用情况。
It is of great importance to optimize the production of oilfields, especially to enhance oil recovery, if maps of fluid migration and changes in the reservoir can be made. However, conventional monitoring techniques, such as logging, stress analysis, or ground-based earthquakes, do not reveal in-depth changes within the reservoir. In many cases, the effect of the recovery rate and the main production process are inferred from the well production data. Special problems such as fluid lines and formation intervals have not yet been solved. The newly developed cross-well imaging technique produces high resolution 2D and 3D reservoir change images that have been used in oilfields to enhance oil recovery. Further understanding of the actual reservoir structure and fluid properties helps to optimize production. The article describes the application of cyclic steam injection technology in California.