Study on Natural Core Experiment of Tracer in Porous Medium

Abstract:

In order to further research in porous media tracer mass transfer diffusion rule based on experiment, the conventional displacement experiment of natural long cores were carried out and the effect of the heterogeneity of microscopic pores structure to tracer mass transfer diffusion was compared. The experiment results show that, when injection rate is close, because the heterogeneity of low permeability core pore structure is stronger and small-scale dash is existed, the output time will be earlier, concentration will rise slowly, and mixed coefficient will be bigger. In terms of the same permeability, because injection rate is low, the pressure difference of two ends is small, the start of porosity is wider and its quantity is less. Therefore, if inject less pore volume of multiples displacement fluid, the output will be present tracer, the pore network of so-called "channeling the effect" will be formed, and mixed constant will be bigger. In homogeneous core, when permeability is close, due to the injection rate increases which exacerbate the actually existed part of microscopic heterogeneity features of the internal core, the output time will be earlier, concentration will rise slowly.

• Periodical: Advanced Materials Research (Volumes 616-618)
• Pages: 197-200
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.616-618.197
• Online since: December 2012
• Authors: Tong Jing Liu, Peng Xiang Diwu, Bao Yi Jiang
• Keywords: Mass Transfer and Diffuse, Natural Long Core, Porous Medium, Tracer

References

[1] Jang hanqiao，Liu Tongjing. Interpretation rule and field practice of tracer test[M]. Dongying: University of Petroleum Press, 2001.

[2] Bernard Zemel. Tracers in the oil field[M]. New York: Elsevier Science, 1995.

[3] Feng Baojun, Du Xingjia, Li Lin et al. Interprete. Collected translation works of inter well tracer technology. Beijing: Petroleum Industry Press,1994.

[4] Song Jishui, Wang Yanlou, Liao Guangzhi, et al. Inter well tracer technology[M]. Beijing: Petroleum Industry Press,2003.

[5] Ge Jiali. Contemporary reservoir fluid mechanics in porous medium rule[M]. Beijing: Petroleum Industry Press,2003.

[6] Yuen, .D.L., Brigham, W.E. and Cindo-Ley, H. Analysis of Five-Spot Tracer Test to Determine Reservoir Layering . DOE Report SAW 12658. Feb.1979.

DOI: 10.2172/6283405