04074763 is referenced by 24 patents and cites 4 patents.

The invention relates to gas-liquid separator useful in a well and utilizes centrifugal force to assist in separating gas from liquid and includes a central inner tubular member for flowing gas thus separated through the incoming gas-liquid mixture and also an annular passage for gas flow up through the incoming gas-liquid mixture.

Title
Bottom-hole gas-liquid separator
Application Number
5/751790
Publication Number
4074763
Application Date
December 17, 1976
Publication Date
February 21, 1978
Inventor
Robert A Stevens
Calgary
CA
Agent
Edward J Keeling
R L Freeland Jr
Assignee
Chevron Research Company
CA, US
IPC
E21B 43/02
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