Influence of the top pressure on water removal from a vertical tube in a two-phase flow regime

The purpose of this work is to highlight the effects of wellhead pressure on the removal of water from its bottom. Tests were therefore carried out in a simulation laboratory on a test section represented by a vertical tube 600 mm long and 37 mm in diameter. It was therefore a question of working on a two-phase flow with air as gas and water as liquid. The velocity of the air injected into the tube was calculated taking into account the top and bottom pressures of the vertical tube. Related measurements and calculations were carried out and conclusions were drawn on the impact of the tube top pressure on the removal of water from the tube bottom, all by analogy to vertical gas extraction wells.