Numerical analysis of passive seismic emission tomography using oscillation caused by multiphase flow method
Numerical analysis of passive seismic emission tomography using oscillation caused by multiphase flow method
复制标题
多相流振荡被动地震发射层析成像数值分析
DOI：
10.3997/2352-8265.20140215
复制
发表时间：
2017
影响因子：
4.6
通讯作者：
J. Takekawa
中科院分区：
文献类型：
--
作者：
A. Watanabe;H. Mikada;J. Takekawa
近年来，利用在储层中产生的振动的监测技术（被动地震发射层析成像方法：PSET）的开发已得到广泛进展。然而，使用PSET进行的监测只能估计水库的范围。而且，目前对它的理论认识还比较缺乏。另一方面，我们提出了一种方法来监测地下的振动所造成的流体流动的水库。我们正在进行研究的基础上的假设，在水库中的流体的差异反映到地震波在水库中产生。在以往的研究中，我们已经证明了通过长时间测量油水两相流引起的地震波来可视化库区是可能的。在本研究中，我们利用绿色函数来计算水-油两相流和气-油两相流的地震波。结果，由流体的流动引起的振动不仅指示流动面积，而且指示关于流体的性质的信息。这一结果可作为监测与采油和提高采收率方法相关的储层流体性质变化的有效方法。
In recent years, development of a monitoring technique (Passive Seismic Emission Tomography method: PSET) using vibration generated in the reservoir has been widely progressed. However, monitoring with PSET only estimates the extent of the reservoir. Moreover, its theoretical knowledge is lacking at present. On the other hand, we proposed a method to monitor underground from vibration caused by fluid flow inside the reservoir. We are conducting research based on the hypothesis that the difference in the fluid in the reservoir is reflected to the seismic wave generated in the reservoir. In the previous research, we showed that it is possible to visualize the reservoir area by measuring the seismic wave caused by the two-phased oil and water flow for a long time. In this study, we calculate seismic waves using Green's function occurring with water-oil two-phase flow and gas-oil two-phase flow. As a result, the vibration caused by the flow of the fluid not only indicates the flowing area but also information on the properties of the fluid. It is suggested that this result may be effective as a method to monitor the change of the fluid properties in the reservoir associated with oil production and enhanced oil recovery method.