GAS SEPARATOR WITH AUTOMATIC LEVEL CONTROL Russian patent published in 2006 - IPC E21B43/38 

FIELD: oil production, particularly devices for gravity separation of immiscible liquids having different densities.

SUBSTANCE: gas separator comprises sedimentation vessel having fluid inlet section formed in upper part of side surface thereof and performing vertical displacement. The gas separator also comprises packer installed over the sedimentation vessel and valve. The valve controls gas flow from lower side packer surface to upper side surface thereof. The valve is connected with sedimentation vessel so that valve is actuated under vertical sedimentation vessel movement. Downhole equipment comprises gas separator, production string for liquid extraction and gas outlet pipe connected to valve. Sedimentation vessel at least partly encloses production string. Production string is adapted to extract liquid from sedimentation vessel with the use of pump. Gas separation method involves installing sedimentation vessel; injecting two-phase mixture into upper part of the sedimentation vessel to create falling fluid flow to separate thereof into gas and liquid fractions; accumulating liquid fraction inside sedimentation vessel; regulating gas fraction; extracting liquid fraction from sedimentation vessel and performing valve opening and closing depending on vertical sedimentation vessel position.

EFFECT: increased output.

21 cl, 6 dwg