Assignee
PRESSSOL LTD
CA·6 granted patents·5 pending applications·338 citations·filing 2003–2008
Technology mixE21B11
Top patents by PatentIndex Score
11 records- 0195US7204327B2Reverse circulation directional and horizontal drilling using concentric drill stringPRESSSOL LTD·Filed 2003·Granted Apr 17, 2007·184 cites·50 claims
- 0292US7343983B2Method and apparatus for isolating and testing zones during reverse circulation drillingPRESSSOL LTD·Filed 2005·Granted Mar 18, 2008·44 cites·17 claims
- 0378US7066283B2Reverse circulation directional and horizontal drilling using concentric coil tubingPRESSSOL LTD·Filed 2003·Granted Jun 27, 2006·47 cites·60 claims
- 0468US6892829B2Two string drilling systemPRESSSOL LTD·Filed 2003·Granted May 17, 2005·33 cites·40 claims
- 0562US7090018B2Reverse circulation clean out system for low pressure gas wellsPRESSSOL LTD·Filed 2003·Granted Aug 15, 2006·26 cites·155 claims
- 0654US7540325B2Well cementing apparatus and methodPRESSSOL LTD·Filed 2006·Granted Jun 2, 2009·4 cites·34 claims
- 0742US2008099195A1Method and apparatus for isolating and testing zones during reverse circulation drillingPRESSSOL LTD·Filed 2008·Application pending·0 cites
- 0839US2005178586A1Downhole blowout preventorPRESSSOL LTD·Filed 2005·Application pending·0 cites
- 0937US2006219407A1Method and apparatus for cementing a well using concentric tubing or drill pipePRESSSOL LTD·Filed 2006·Application pending·0 cites
- 1036US2005252661A1Casing degasser toolPRESSSOL LTD·Filed 2005·Application pending·0 cites
- 1136US2005178562A1Method and apparatus for isolating and testing zones during reverse circulation drillingPRESSSOL LTD·Filed 2005·Application pending·0 cites
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