Natural or engineering facility maintaining the bottom-hole pressure below the pressure in subsurface reservoir, connected to the wellbore, and thus enforcing a flow from reservoir into a wellbore and further lift of the wellbore fluid up to the surface.
| Natural Lift | Artifical Gas Lift | SRP | ESP | Hydraulic Pump | Swab |
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Petroleum Industry / Upstream / Production / Subsurface Production Operations / Well / Well Control
[ Well completion ][ Pump ]
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