Experiments on checking the principle of hydrogen sulfide water gaslift were fulfilled according to the agreement with the Karazin Kharkov National University of the Ministry of Education and Science of Ukraine. The facility developed in SPE RESST for modeling the gaslift of water with given gas saturation was used.
 The model experiment has demonstrated the gaslift of the water with gas saturation corresponding to the gas saturation of the Black Sea water from the depth of 1000 m (Fig.1). The height of water lifting in the lifting facility agrees well with the calculated design value. |
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  Fig. 1 – The facility for modeling the gaslift of water with given gas saturation |
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The flow lifting of the gas-saturated water from the given depths was modeled experimentally to study the influence of the pressure dumping rate on the formation and dynamics of gas bubbles. In the unit the gas dumping was modeled that corresponded to the flow lifting of hydrogen sulfide water from the depth of ~1000 m onto the sea surface with the lifting speed of ~103 m/s (Fig.2). At such a pressure dumping rate the volume of separate bubbles will increase providing the gas lift effect initiation. |
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 Fig. 2 – Time dynamics of gas bubbles during the pressure dumping in the high-pressure cell of the installation from 100 atm (T = 0 s) to 1 atm (T= 0.33 s) and down |
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It is shown, that the water lifting height in the intake pipe of the gaslift device increases if its internal surface is well wetted (Fig.3). The water saltiness increase (with water intake depth increase) promotes the lifting height increase in the intake pipe and, consequently, the process flow-lifting height increase. This factor determines the yield of the hydrogen sulfide energy-generating complex taking into account its use for renewable energy generation. |
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   Fig. 3 – Positions of the gas-saturated meniscuses |
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