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Oilfield Glossary
Oilfield Glossary
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osmotic pressure

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1. n. [Drilling Fluids]
The pressure that must be applied to the low-salinity side of an osmotic system to prevent water movement into the high-salinity side by osmosis. Conversely, it is the suction pressure that a high-salinity system exerts on the low-salinity system across a semipermeable membrane in an osmotic system.