Developing the operating principle and mathematical model of the downhole device for injecting scCO2 in productive formations

Abstract

Traditional technologies are not economically efficient in term of processing heavy and extra-heavy oils. Technologies based on the use of supercritical fluids (SCF) may become one of the innovative directions in the production and processing of heavy and extra-heavy oils. Therefore, in this paper the operation principle of the downhole device for pumping scCO2 into a productive reservoir is developed. The mathematical model is developed either. Calculations with different heat flux densities on the channel wall are carried out. The dependences of the temperature distribution along the length of the heated section are obtained. The calculation results are compared with experimental data.

Bellows control devices for borehole supercritical extraction processes

“…Supercritical fluid technologies are widely used in various industries, e.g. supercritical extraction, drying, pharmaceuticals, and in the production of new materials [4]. For these technological processes, specialized equipment is used, based on the regulation and control of the working pressure and the direction of the flow of the working fluid.…”