05431228 is referenced by 56 patents and cites 11 patents.

A downhole gas-liquid separator for multiphase fluid producing wells includes a tubular member with a spiral baffle disposed therein and a duct including an inlet disposed adjacent the discharge end of the spiral baffle. Fluid flow into the separator undergoes substantial gas and liquid separation by centrifugal forces imposed on the liquid as it progresses through the spiral flowpath. Gas is drawn off at the discharge end of the spiral baffle and discharged into the wellbore annulus while liquid and a small amount of gas pass on through the separator and the production tubing to the surface. The spiral baffle may be disposed in the wellbore between the distal end of the production tubing string and the point of entry of gas and liquid into the wellbore. The separator may include a retrievable tubular body inserted in a ported nipple interposed in the tubing string.

Title
Downhole gas-liquid separator for wells
Application Number
53581
Publication Number
5431228
Application Date
November 28, 1994
Publication Date
July 11, 1995
Inventor
Richard L Payne
McKinney
TX, US
Miroslav M Kolpak
Plano
TX, US
M Jane Williamson
Anchorage
AK, US
Jean S Weingarten
Anchorage
AK, US
Agent
Michael E Martin
Assignee
Atlantic Richfield Company
CA, US
IPC
E21B 43/38
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