US 12,435,599 B2
Downhole safety valve with electro-magnetic tooth brake system
Ibrahim El Mallawany, Al-Khobar (SA)
Assigned to Halliburton Energy Services, Inc., Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on Jan. 30, 2024, as Appl. No. 18/427,029.
Prior Publication US 2025/0243729 A1, Jul. 31, 2025
Int. Cl. E21B 34/06 (2006.01); F16K 17/36 (2006.01); F16K 31/04 (2006.01)
CPC E21B 34/066 (2013.01) [F16K 17/36 (2013.01); E21B 2200/03 (2020.05); E21B 2200/05 (2020.05); F16K 31/047 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A safety valve for use downhole in a well comprises:
an outer housing having a longitudinal bore therethrough;
a valve having an open position and a closed position, wherein the valve is biased towards the closed position;
a translating sleeve disposed within the outer housing and configured to move axially between a first position distal to the valve and a second position proximal to the valve, wherein the translating sleeve is biased towards the first position when disposed in the second position; and
an electro-magnetic tooth brake system configured to maintain the translating sleeve in the second position when engaged, wherein the electro-magnetic tooth brake system comprises an electric tooth brake having an electromagnet configured to generate a magnetic force directed for moving brake teeth axially.