Inventor
DUENCKEL ROBERT
US25 patents
⚠️ This page may combine multiple inventors who share the name “DUENCKEL ROBERT”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CARBO CERAMICS INC
20 patentsUS9670400B2Jun 6, 2017
Proppant particles formed from slurry droplets and methods of use
CARBO CERAMICS INC22 citations93
US7921910B2Apr 12, 2011
Tagged propping agents and related methods
CARBO CERAMICS INC33 citations91
US7825053B2Nov 2, 2010
Sintered spherical pellets
CARBO CERAMICS INC32 citations90
US7678723B2Mar 16, 2010
Sintered spherical pellets
CARBO CERAMICS INC36 citations90
US11512025B2Nov 29, 2022
Proppant particles formed from slurry droplets and methods of use
CARBO CERAMICS INC4 citations83
US10118863B2Nov 6, 2018
Proppant particles formed from slurry droplets and methods of use
CARBO CERAMICS INC4 citations83
US10077395B2Sep 18, 2018
Proppant particles formed from slurry droplets and methods of use
CARBO CERAMICS INC8 citations83
US11286418B2Mar 29, 2022
Composition and method for hydraulic fracturing and evaluation and diagnostics of hydraulic fractures using infused porous ceramic proppant
CARBO CERAMICS INC5 citations82
US9951267B2Apr 24, 2018
Infused and coated proppant containing chemical treatment agents and methods of using same
CARBO CERAMICS INC4 citations82
US11078771B2Aug 3, 2021
Identification of cement in subterranean borehole regions using a ratio of capture to inelastic gamma rays
CARBO CERAMICS INC2 citations72
US11124697B2Sep 21, 2021
Infused and coated proppant containing chemical treatment agents and methods of using same
CARBO CERAMICS INC3 citations71
US10316242B2Jun 11, 2019
Composition and method for hydraulic fracturing and evaluation and diagnostics of hydraulic fractures using infused porous ceramic proppant
CARBO CERAMICS INC4 citations71
US10161237B2Dec 25, 2018
Identification of proppant in subterranean fracture zones using a ratio of capture to inelastic gamma rays
CARBO CERAMICS INC3 citations68
US12473237B2Nov 18, 2025
Proppant particles formed from slurry droplets and methods of use
CARBO CERAMICS INC0 citations62
US12252648B2Mar 18, 2025
Infused and coated proppant containing chemical treatment agents and methods of using same
CARBO CERAMICS INC0 citations61
US12037545B2Jul 16, 2024
Composition and method for hydraulic fracturing and evaluation and diagnostics of hydraulic fractures using infused porous ceramic proppant
CARBO CERAMICS INC0 citations61
US11739260B2Aug 29, 2023
Infused and coated proppant containing chemical treatment agents and methods of using same
CARBO CERAMICS INC0 citations61
US10513654B2Dec 24, 2019
Methods of making proppant particles from slurry droplets and methods of use
CARBO CERAMICS INC0 citations52
US10077398B2Sep 18, 2018
Methods of making proppant particles from slurry droplets and methods of use
CARBO CERAMICS INC0 citations52
US10507517B2Dec 17, 2019
Foundry media formed from slurry droplets and methods of use
CARBO CERAMICS INC0 citations48
SMITH JR HARRY D
4 patentsUS8234072B2Jul 31, 2012
Methods of identifying high neutron capture cross section doped proppant in induced subterranean formation fractures
SMITH JR HARRY D33 citations92
US8100177B2Jan 24, 2012
Method of logging a well using a thermal neutron absorbing material
SMITH JR HARRY D27 citations92
US9038715B2May 26, 2015
Use of PNC tools to determine the depth and relative location of proppant in fractures and the near borehole region
SMITH JR HARRY D9 citations83
US8648309B2Feb 11, 2014
Spectral identification of proppant in subterranean fracture zones
SMITH JR HARRY D12 citations83