Inventor
PFUTZNER HAROLD
US18 patents
⚠️ This page may combine multiple inventors who share the name “PFUTZNER HAROLD”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SCHLUMBERGER TECHNOLOGY CORP
14 patentsUS6097786AAug 1, 2000
Method and apparatus for measuring multiphase flows
SCHLUMBERGER TECHNOLOGY CORP96 citations96
US7978804B2Jul 12, 2011
Low power neutron generators
SCHLUMBERGER TECHNOLOGY CORP26 citations92
US7367392B2May 6, 2008
Wellbore apparatus with sliding shields
SCHLUMBERGER TECHNOLOGY CORP27 citations92
US7364007B2Apr 29, 2008
Integrated acoustic transducer assembly
SCHLUMBERGER TECHNOLOGY CORP45 citations92
US11988088B2May 21, 2024
Downhole flowmeter
SCHLUMBERGER TECHNOLOGY CORP1 citations72
US11520070B2Dec 6, 2022
Effective medium theory of acidized carbonate matrix resistivity employed to calculate the apparent geometric parameters of the wormholes
SCHLUMBERGER TECHNOLOGY CORP2 citations72
US12371990B2Jul 29, 2025
Downhole flowmeter
SCHLUMBERGER TECHNOLOGY CORP0 citations62
US11680481B2Jun 20, 2023
Downhole flowmeter
SCHLUMBERGER TECHNOLOGY CORP0 citations62
US8866068B2Oct 21, 2014
Ion source with cathode having an array of nano-sized projections
SCHLUMBERGER TECHNOLOGY CORP2 citations62
US11041974B2Jun 22, 2021
X-ray imaging device for cased wells and open boreholes
SCHLUMBERGER TECHNOLOGY CORP0 citations61
US12378882B2Aug 5, 2025
Method for performing Raman spectroscopy within a logging while drilling instrument
SCHLUMBERGER TECHNOLOGY CORP0 citations60
US11530611B2Dec 20, 2022
Method for performing Raman spectroscopy within a logging while drilling instrument
SCHLUMBERGER TECHNOLOGY CORP1 citations60
US12529299B2Jan 20, 2026
Enhancing transverse fractures while performing hydraulic fracturing within an openhole borehole
SCHLUMBERGER TECHNOLOGY CORP0 citations50
US11163089B2Nov 2, 2021
Neutron imaging devices for cased wells and open boreholes
SCHLUMBERGER TECHNOLOGY CORP0 citations50