Inventor
SAETRE TOR SIGVE
NO4 patents
Patents
4 patentsUS11293253B2Apr 5, 2022
Dual sub-surface release plug with bypass for small diameter liners
HALLIBURTON ENERGY SERVICES INC8 citations79
US11391119B2Jul 19, 2022
Differential fill valve with collet sleeve
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US11448038B2Sep 20, 2022
Reverse cementing valve system and method employing a double flapper valve with sliding sleeve and drillable nose
HALLIBURTON ENERGY SERVICES INC0 citations60
US12460507B2Nov 4, 2025
Apparatus and method of reducing surge when running casing
HALLIBURTON ENERGY SERVICES INC0 citations55