Inventor

HAM JEFFREY

US3 patents

Patents

3 patents

US11072982B2Jul 27, 2021

Aligned disc choke for managed pressure drilling

SCHLUMBERGER TECHNOLOGY CORP0 citations53

US11225847B2Jan 18, 2022

Universal riser joint for managed pressure drilling and subsea mudlift drilling

SCHLUMBERGER TECHNOLOGY CORP0 citations45

US11377917B2Jul 5, 2022

Staged annular restriction for managed pressure drilling

SCHLUMBERGER TECHNOLOGY CORP0 citations41