Inventor · disambiguated record
David Sask
Also filed as: SASK DAVID · SASK DAVID E
9 granted patents·315 citations·filing 1987–2007
90Inventor score
Technology areasE21B
Files withSCHLUMBERGER TECHNOLOGY CORP3DOWNHOLE SYSTEMS TECHNOLOGY CA1MARALDA OILWELL TECHNOLOGY LTD1NOWSCO WELL SERVICE LTD1SASK DAVID1
Top patents by PatentIndex Score
9 records- 0190US5638904ASafeguarded method and apparatus for fluid communiction using coiled tubing, with application to drill stem testingNOWSCO WELL SERVICE LTD·Filed 1995·Granted Jun 17, 1997·140 cites·46 claims
- 0282US4898236ADrill stem testing systemDOWNHOLE SYSTEMS TECHNOLOGY CA·Filed 1987·Granted Feb 6, 1990·78 cites·4 claims
- 0367US7849920B2System and method for optimizing production in a wellSCHLUMBERGER TECHNOLOGY CORP·Filed 2007·Granted Dec 14, 2010·11 cites·13 claims
- 0464US6527050B1Method and apparatus for formation damage removalFiled 2000·Granted Mar 4, 2003·24 cites·87 claims
- 0560US7063156B2Tubing fill and testing valveSCHLUMBERGER TECHNOLOGY CORP·Filed 2003·Granted Jun 20, 2006·19 cites·15 claims
- 0653US6722438B2Method and apparatus for formation damage removalFiled 2002·Granted Apr 20, 2004·13 cites·10 claims
- 0751US7267177B2Tubing fill and testing valveSCHLUMBERGER TECHNOLOGY CORP·Filed 2006·Granted Sep 11, 2007·2 cites·20 claims
- 0846US6959762B2Method and apparatus for formation damage removalSASK DAVID·Filed 2004·Granted Nov 1, 2005·10 cites·9 claims
- 0935US4995462ADewaxing control apparatus for oil wellMARALDA OILWELL TECHNOLOGY LTD·Filed 1990·Granted Feb 26, 1991·18 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →