The Recovery Of Residual Oil From Reservoirs

1589 WordsMar 23, 20157 Pages
Introduction The recovery of residual oil from reservoirs is one of the major challenges faced by petroleum industries. Based on the requirement of heat, EOR techniques have been divided into cold and hot (thermal) recovery methods. Cold methods such as CHOPS, water / polymer flooding, microbial injection, etc. doesn’t require any additional heat which saves the cost of heat generation. On other hand thermal methods like SAGD, CSS, steam flooding, fire-flooding, etc. require more temperature which results in higher recovery of oil. Even though, the technique of heating the formation through low / high frequency resistive heaters have been recognised 3 decades ago, but it is still a peripheral technology for EOR. Despite in the advancement of different EOR techniques, none of them have proven to be economic, less energy exhaustive, and environment friendly. Recently, Novas Energy Services have developed a tool that creates dense plasma when subjected to high voltage up to few hundred Volts and propagate it inside the formation through elastic waves. The produced plasma is not only utilized for cleaning bottom-hole zone, but also used for enhancing reservoir permeability and crude’s flow ability. But due to inadequate sample of equipment for generating plasma pulse, this tool is only used for pilot field experiments. In this technical paper, a theoretical design of wire-line CO2 plasma generating device is proposed along with the blueprint of the mechanism of its execution.
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