- #1
Charles123
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I am not talking about drive mechanisms used in oil extraction, like water or gas injection. I am referring simply to the fact that oil migrates to the top of reservoirs until it reaches an impermeable top layer that traps it.
"A trap forms when the buoyancy forces driving the upward migration of hydrocarbons through a permeable rock cannot overcome the capillary forces of a sealing medium." - http://en.wikipedia.org/wiki/Petroleum_reservoir
From what I understand oil is usually found in a layer of porous rock. Sometimes there is water at the bottom, but let's assume that is not the case. What causes this buoyancy?
Thank you
Regards
"A trap forms when the buoyancy forces driving the upward migration of hydrocarbons through a permeable rock cannot overcome the capillary forces of a sealing medium." - http://en.wikipedia.org/wiki/Petroleum_reservoir
From what I understand oil is usually found in a layer of porous rock. Sometimes there is water at the bottom, but let's assume that is not the case. What causes this buoyancy?
Thank you
Regards