Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
November 23, 2021
Patent Application Number
16865329
Date Filed
May 2, 2020
Patent Primary Examiner
Patent abstract
A plunger includes a sleeve having a passage therethrough and a valve member in the passage. When the plunger falls in a production string of a hydrocarbon well, the valve member is open and allows gas flow through the plunger. When the plunger contacts a liquid slug in the production string, the valve closes so that pressure from below reverses movement of the plunger so it pushes liquid above the plunger toward the earth's surface and ultimately to a well head where liquid and gas are separated.
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