Assignee
TESCO CORP
CA96 patents
Top patents by PatentIndex Score
US7044241B2May 16, 2006
Method for drilling with casing
TESCO CORP87 citations98
US7013992B2Mar 21, 2006
Borehole stabilization while drilling
TESCO CORP63 citations98
US7909109B2Mar 22, 2011
Anchoring device for a wellbore tool
TESCO CORP45 citations97
US6742584B1Jun 1, 2004
Apparatus for facilitating the connection of tubulars using a top drive
TESCO CORP156 citations97
US6705413B1Mar 16, 2004
Drilling with casing
TESCO CORP108 citations97
US6199641B1Mar 13, 2001
Pipe gripping device
TESCO CORP137 citations97
US6679335B2Jan 20, 2004
Method for preparing casing for use in a wellbore
TESCO CORP56 citations95
US7878237B2Feb 1, 2011
Actuation system for an oilfield tubular handling system
TESCO CORP43 citations94
US7140443B2Nov 28, 2006
Pipe handling device, method and system
TESCO CORP141 citations93
US7090004B2Aug 15, 2006
Cement float
TESCO CORP20 citations93
US6311792B1Nov 6, 2001
Casing clamp
TESCO CORP263 citations93
US7694730B2Apr 13, 2010
Spear type blow out preventer
TESCO CORP45 citations92
US7673675B2Mar 9, 2010
Pipe handling device and safety mechanism
TESCO CORP22 citations92
US7287584B2Oct 30, 2007
Anchoring device for a wellbore tool
TESCO CORP25 citations92
US7270189B2Sep 18, 2007
Top drive assembly
TESCO CORP61 citations92
US7219727B2May 22, 2007
Wear resistant tubular connection
TESCO CORP29 citations92
US7140455B2Nov 28, 2006
Valve method for drilling with casing using pressurized drilling fluid
TESCO CORP30 citations92
US7124825B2Oct 24, 2006
Casing wear band and method of attachment
TESCO CORP23 citations92
US7108080B2Sep 19, 2006
Method and apparatus for drilling a borehole with a borehole liner
TESCO CORP139 citations92
US7082997B2Aug 1, 2006
Pipe centralizer and method of attachment
TESCO CORP43 citations92
US6585052B2Jul 1, 2003
Casing centralizer
TESCO CORP30 citations92
US6513223B1Feb 4, 2003
Method for installing a centralizer retaining collar and outer sleeve
TESCO CORP37 citations92
US7640984B2Jan 5, 2010
Method for drilling and casing a wellbore with a pump down cement float
TESCO CORP21 citations91
US7428927B2Sep 30, 2008
Cement float and method for drilling and casing a wellbore with a pump down cement float
TESCO CORP16 citations91
US6227306B1May 8, 2001
Pipe gripping device
TESCO CORP18 citations91
US7784552B2Aug 31, 2010
Liner drilling method
TESCO CORP31 citations89
US7475742B2Jan 13, 2009
Method for drilling with casing
TESCO CORP18 citations89
US5755289AMay 26, 1998
Drilling rig elevator with replaceable clamping inserts and method for installation
TESCO CORP57 citations89
US7377324B2May 27, 2008
Pipe handling device, method and system
TESCO CORP31 citations88
US7861781B2Jan 4, 2011
Pump down cement retaining device
TESCO CORP74 citations87
US7681649B2Mar 23, 2010
Power slips
TESCO CORP27 citations87
US9689250B2Jun 27, 2017
System and method for mitigating stick-slip
TESCO CORP16 citations86
US7942199B2May 17, 2011
Method for installing wellbore string devices
TESCO CORP13 citations84
US7814972B2Oct 19, 2010
Wireline entry sub
TESCO CORP8 citations84
US7814633B2Oct 19, 2010
Pipe centralizer and method of forming
TESCO CORP15 citations84
US7654313B2Feb 2, 2010
Method and assembly for casing handling using a kelly rig
TESCO CORP11 citations84
US7520343B2Apr 21, 2009
Retrievable center bit
TESCO CORP13 citations84
US7370712B2May 13, 2008
Under reamer
TESCO CORP28 citations84
US7328742B2Feb 12, 2008
Seal cup for a wellbore tool and method
TESCO CORP11 citations84
US7021382B2Apr 4, 2006
Downhole axial force generating tool
TESCO CORP18 citations84
US9650880B2May 16, 2017
Waveform anti-stick slip system and method
TESCO CORP18 citations83
US7845431B2Dec 7, 2010
Retrieval tool with slips for retrieving bottom hole assembly during casing while drilling operations
TESCO CORP12 citations83
US7784551B2Aug 31, 2010
Tubular handling device
TESCO CORP15 citations83
US6899356B2May 31, 2005
Tubular connection floating shoulder ring
TESCO CORP12 citations83
US7926590B2Apr 19, 2011
Method of liner drilling and cementing utilizing a concentric inner string
TESCO CORP13 citations82
US7878256B2Feb 1, 2011
Burst plug for a downhole fluid passage
TESCO CORP7 citations82
US7757764B2Jul 20, 2010
Method for drilling and casing a wellbore with a pump down cement float
TESCO CORP10 citations82
US7647990B2Jan 19, 2010
Method for drilling with a wellbore liner
TESCO CORP16 citations82
US7484559B2Feb 3, 2009
Method for drilling and casing a wellbore with a pump down cement float
TESCO CORP10 citations82
US7926578B2Apr 19, 2011
Liner drilling system and method of liner drilling with retrievable bottom hole assembly
TESCO CORP17 citations81
Showing the top 50 of 96 patents by PatentIndex Score.