Inventor · disambiguated record
David Welshans
Also filed as: WELSHANS DAVID · WELSHANS DAVID M
8 granted patents·1 pending application·184 citations·filing 2003–2015
88Inventor score
Technology areasE21B
Top patents by PatentIndex Score
9 records- 0193US7216533B2Methods for using a formation testerHALLIBURTON ENERGY SERV INC·Filed 2005·Granted May 15, 2007·60 cites·26 claims
- 0290US7966875B2Methods and apparatus for measuring formation propertiesHALLIBURTON ENERGY SERV INC·Filed 2008·Granted Jun 28, 2011·34 cites·37 claims
- 0382US7243537B2Methods for measuring a formation supercharge pressureHALLIBURTON ENERGY SERV INC·Filed 2005·Granted Jul 17, 2007·24 cites·26 claims
- 0476US9598956B2Systems and methods of a sample bottle assemblyHALLIBURTON ENERGY SERVICES INC·Filed 2015·Granted Mar 21, 2017·2 cites·27 claims
- 0576US7204309B2MWD formation testerHALLIBURTON ENERGY SERV INC·Filed 2003·Granted Apr 17, 2007·42 cites·64 claims
- 0674US9068405B2Systems and methods of a sample bottle assemblySHERRILL KRISTOPHER V·Filed 2010·Granted Jun 30, 2015·4 cites·24 claims
- 0774US7395879B2MWD formation testerHALLIBURTON ENERGY SERV INC·Filed 2007·Granted Jul 8, 2008·13 cites·20 claims
- 0857US7938199B2Measurement while drilling tool with interconnect assemblyHALLIBURTON ENERGY SERV INC·Filed 2007·Granted May 10, 2011·5 cites·38 claims
- 0940US2005257611A1Methods and apparatus for measuring formation propertiesHALLIBURTON ENERGY SERV INC·Filed 2005·Application pending·0 cites
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