US 12,331,628 B2
Multi-stage, limited entry downhole gas separator
Brian Ellithorp, Edmond, OK (US)
Assigned to Blackjack Production Tools, LLC, Oklahoma City, OK (US)
Filed by Blackjack Production Tools, LLC, Oklahoma City, OK (US)
Filed on Sep. 13, 2021, as Appl. No. 17/473,410.
Application 17/473,410 is a continuation of application No. 16/815,913, filed on Mar. 11, 2020, granted, now 11,131,180, issued on Sep. 28, 2021.
Claims priority of provisional application 62/816,516, filed on Mar. 11, 2019.
Prior Publication US 2021/0404311 A1, Dec. 30, 2021
Int. Cl. E21B 43/38 (2006.01); E21B 17/18 (2006.01); E21B 43/12 (2006.01)
CPC E21B 43/38 (2013.01) [E21B 17/18 (2013.01); E21B 43/122 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A separator comprising:
a first, innermost tube configured for communication with a pump;
a second, outermost tube, surrounding the first tube; and
a third tube, disposed between the first tube and the second tube, such that a first annular region is formed between the first and third tube and a second annular region is formed between the second tube and the third tube;
in which the third tube comprises a plurality of separator stages, each of the separator stages comprising:
a first isolation member and a second isolation member, each isolation member forming a boundary of the separator stage within the first annular region;
a limited entry port interconnecting the each of the separator stages and the first tube; and
an opening interconnecting the each of the separator stages and the second annular region
in which the limited entry port in a first selected one of the plurality of separator stages is smaller than the limited entry port in a second selected one of the plurality of separator stages, wherein the second selected one of the plurality of separator stages is directly below the first selected one of the plurality of separator stages.