| Patents for E21B 17 - Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings (27,800) |
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| 06/08/2004 | US6745840 System for accessing oil wells with compliant guide and coiled tubing |
| 06/03/2004 | WO2004046497A1 Releasable wireline cablehead |
| 06/03/2004 | WO2004015239A3 Offshore platform with vertically-restrained buoy and well deck |
| 06/03/2004 | WO2002066786A8 Seafloor-surface connecting installation of a submarine pipeline installed at great depth |
| 06/03/2004 | US20040105728 Device for producing bored piles |
| 06/03/2004 | US20040104797 Downhole data transmission system |
| 06/03/2004 | US20040104575 Expandable coupling |
| 06/03/2004 | US20040104052 Reverse circulation directional and horizontal drilling using concentric coil tubing |
| 06/03/2004 | US20040104051 [directional casing drilling] |
| 06/03/2004 | US20040104047 Insulative gap sub assembly and methods |
| 06/02/2004 | CN2619046Y Reverse pulling type oil pipe anchor |
| 06/02/2004 | CN2619045Y Rail type oil pumping rod centralizer |
| 06/02/2004 | CN2619044Y Shock-proof anti-drop device for oil pumping rod |
| 06/02/2004 | CN1502024A Expandable coupling |
| 06/01/2004 | CA2230512C Friction-reducing drill pipe component |
| 05/27/2004 | WO2004044379A2 Downhole hydraulic control line connector |
| 05/27/2004 | WO2004044377A1 Perforating gun quick connection system |
| 05/27/2004 | WO2004044376A1 Alternate path auger screen |
| 05/27/2004 | WO2004044373A1 Large diameter flush-joint pipe handling system |
| 05/27/2004 | WO2004044372A1 Metal lined composite risers in offshore applications |
| 05/27/2004 | WO2004044371A1 Replaceable liner for metal lined composite risers in offshore applications |
| 05/27/2004 | US20040099444 Steerable underreaming bottom hole assembly and method |
| 05/27/2004 | US20040099425 Rotary percussion device for a drill column |
| 05/27/2004 | US20040099412 Alternate path auger screen |
| 05/26/2004 | EP1421668A1 Unipolar transverse magnetic flux machine |
| 05/26/2004 | CN2617913Y Strip carbon fibre sucker rod producing machine set |
| 05/25/2004 | US6739804 SCR top connector |
| 05/25/2004 | US6739415 Drill pipe protector |
| 05/25/2004 | US6739392 Forming a wellbore casing while simultaneously drilling a wellbore |
| 05/25/2004 | CA2324457C Two-step, low torque wedge thread for tubular connector |
| 05/25/2004 | CA2235865C High torque pressure sleeve for easily drillable casing exit ports |
| 05/25/2004 | CA2179893C Control device for drilling a bore hole |
| 05/21/2004 | WO2003036037A3 Installation and use of removable heaters in a hydrocarbon containing formation |
| 05/20/2004 | US20040096614 Composite spoolable tube with sensor |
| 05/20/2004 | US20040094961 Tubing coupling |
| 05/20/2004 | US20040094309 Hydraulically activated swivel for running expandable components with tailpipe |
| 05/20/2004 | US20040094308 Method for centralising a tight fitting casing in a borehole |
| 05/20/2004 | US20040094303 Inductively coupled method and apparatus of communicating with wellbore equipment |
| 05/20/2004 | US20040094296 Well testing system |
| 05/19/2004 | EP1127209B1 Thread coupling for a drill string for percussive rock drilling |
| 05/19/2004 | DE10340854A1 Zusatzdichtung aus Metall für Unterwasser-Hydraulikkupplung Additional seal made of metal for undersea hydraulic coupling |
| 05/19/2004 | CN2616658Y Novel dropper |
| 05/19/2004 | CN2616657Y Sucker rod disengaging connector |
| 05/19/2004 | CN2616656Y Lengthened knuckle screw joint for petroleum casing |
| 05/19/2004 | CN1497126A Sucker rod and sealing short joint assembly with improved sealing device and liquid hollow torque transmission |
| 05/18/2004 | US6736226 Method and apparatus for boring through a solid material |
| 05/18/2004 | US6736224 Drilling system and method suitable for coring and other purposes |
| 05/18/2004 | US6736223 Thrust control apparatus |
| 05/18/2004 | CA2221514C Method of preventing scrapers on a reciprocating sucker rod from wearing grooves in well tubing, and a scraper |
| 05/13/2004 | WO2004040098A1 Telescoping centralizers for expandable tubulars |
| 05/13/2004 | WO2004040097A1 Gravel packing method using vibration and hydraulic fracturing |
| 05/13/2004 | WO2003089161B1 Protective sleeve for threaded connections for expandable liner hanger |
| 05/13/2004 | WO2003076837A3 Wedgethread pipe connection |
| 05/13/2004 | WO2003029603A8 Wellbore system for simultaneous drilling and production |
| 05/13/2004 | US20040090068 Method and apparatus for sealing radially expanded joints |
| 05/13/2004 | US20040089477 Sprung member and actuator for downhole tools |
| 05/13/2004 | US20040089454 Apparatus comprising expandable bistable tubulars and methods for their use i wellbores |
| 05/13/2004 | US20040089445 Downhole axial force generating tool |
| 05/13/2004 | DE10249933A1 Druckübertragungsteil und Verfahren zum Verlegen einer aus mindestens zwei Rohren bestehenden Rohrleitung Pressure transmitting member and the method for laying a pipe comprising at least two pipe |
| 05/12/2004 | EP1418309A2 Drill bit for percussive drilling |
| 05/12/2004 | EP1117897B1 String of drill pipes for rotary percussion drilling, especially for simultaneous drilling |
| 05/12/2004 | CN1495335A Mechanism helping to make traction on flat surface and non-flat surface |
| 05/12/2004 | CA2448935A1 High density plastic tubing with included power transmission cabling for downhole use in petroleum industry |
| 05/12/2004 | CA2411597A1 High density plastic tubing with included power transmission cabling for downhole use in petroleum industry |
| 05/11/2004 | US6734805 Composite pipe telemetry conduit |
| 05/11/2004 | US6732821 Profiled element for rotary drilling equipment and applications to components of a string of drill pipes |
| 05/11/2004 | US6732820 Method and apparatus for boring through a solid material |
| 05/11/2004 | US6732817 Expandable underreamer/stabilizer |
| 05/11/2004 | US6732805 Sleeve liner for wireline entry sub assembly and method of use |
| 05/06/2004 | WO2004038172A1 Cement flow control tool |
| 05/06/2004 | WO2004038168A1 Device for connecting two elements having a substantially cylindrical or tubular shape |
| 05/06/2004 | WO2004038167A1 Well packer for a pipe string and a method of leading a line past the well packer |
| 05/06/2004 | WO2004038163A2 Drill pipe having an internally coated electrical pathway |
| 05/06/2004 | WO2004025042A3 Method of installing adjustable flange on tube |
| 05/06/2004 | US20040086341 Metal lined composite risers in offshore applications |
| 05/06/2004 | US20040086339 Pipe assembly |
| 05/06/2004 | US20040084848 Metal backup seal for undersea hydraulic coupling |
| 05/06/2004 | US20040084225 Self-retaining downhole-hammer drill bit |
| 05/06/2004 | US20040084222 Alternating inclinations of compacts for drill bit |
| 05/06/2004 | US20040084217 Method and device for drilling a hole and for securing an anchorage in a bore hole |
| 05/06/2004 | US20040084191 Internal coiled tubing connector |
| 05/06/2004 | US20040084188 Replaceable liner for metal lined composite risers in offshore applications |
| 05/06/2004 | US20040084176 Apparatus comprising expandable bistable tubulars and methods for their use in wellbores |
| 05/06/2004 | US20040083835 Insertion tube methods and apparatus |
| 05/06/2004 | DE202004002501U1 Earth boring tool for deep bores has threaded sections with only the boring head detachable by reversing the rotation |
| 05/06/2004 | CA2722642A1 Drill pipe having an internally coated electrical pathway |
| 05/06/2004 | CA2501907A1 Device for connecting two elements having a substantially cylindrical or tubular shape |
| 05/05/2004 | CN1493768A Rolling type connecting centering guide |
| 05/05/2004 | CN1148523C Heat insulating device and method for insulating at least a submarine pipeline at great depth |
| 05/04/2004 | US6729413 Power tool with battery pack ejector |
| 05/04/2004 | US6729399 Method and apparatus for determining reservoir characteristics |
| 05/04/2004 | CA2297003C Flow measurement mandrel |
| 05/04/2004 | CA2182360C Fluid-tight connecting apparatus |
| 04/29/2004 | WO2004035375A1 Riser installation vessel and method of using the same |
| 04/29/2004 | WO2004005665A3 Dovetail thread coupling for expandable tubulars |
| 04/29/2004 | WO2004003327A3 Helically wound insert for expandable tubulars |
| 04/29/2004 | US20040079786 Joining of tubulars through the use of explosives |
| 04/29/2004 | US20040079555 Sampling isolator |
| 04/29/2004 | US20040079553 Reverse circulation directional and horizontal drilling using concentric drill string |
| 04/29/2004 | US20040079535 Telescoping centralizers for expandable tubulars |