Document Type : Research Paper


1 M.S. Student, Reservoir Studies Department, Iranian Offshore Oil Company, Tehran, Iran.

2 Assistant Professor, Department of Petroleum Engineering, Petroleum University of Technology, Ahwaz, Iran

3 Assistant Professor, Research Institute of Petroleum Industries, Tehran, Iran

4 M.S. Student, National Iranian South Oil Company, Ahwaz, Iran


Nowadays, use of visco-elastic surfactants as the main component of gel diverters is becoming more and more common among well completion engineers, as well as stimulation service companies. Gel diverter, as other kinds of diverters, is used in multi-layered carbonated reservoirs to diver acid into less permeable sublayer. As use of these materials becomes more common, modeling and simulating the gel-acid injection process becomes more required. In this study, a mathematical model is generated to simulate gel-acid injection process, and experimental data is compared with data predicted by the model. The purpose of this study is to investigate the field possibility of injection gel-acid and to generate a model for simulating this process, in order to smart permeability enhancement in Ahwaz oilfield, one of Iranian Southwest oilfields. The solutions predicted by model are in an acceptable correlation with experimental data. The generated model can be used for other multi-layered carbonated oilfields.


  • Two different VESs is injected in core plugs.
  • Parallel acid core flood set-up is used.
  • Viscosity measurement tests are run.


Main Subjects

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