| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 06/22/2004 | US6752211 Method and apparatus for multilateral junction |
| 06/22/2004 | US6751893 Nozzle mount for soft excavation |
| 06/17/2004 | WO2004051053A1 Apparatus and method for opening and closing lateral boreholes |
| 06/17/2004 | WO2004051004A2 Method and apparatus for sub-sea pile-driving |
| 06/17/2004 | WO2003086042A3 Method of cleaning hole diggers and spot cultivators and hole digger cleaning device |
| 06/17/2004 | US20040115435 High Volume Density Polycrystalline Diamond With Working Surfaces Depleted Of Catalyzing Material |
| 06/17/2004 | US20040113482 Portable placer exploration and sampling apparatus |
| 06/17/2004 | US20040113340 Sonic drill head |
| 06/17/2004 | US20040112646 Steel; rotation drilling; in situ cementing casing |
| 06/17/2004 | US20040112640 Command method for a steerable rotary drilling device |
| 06/17/2004 | US20040112639 Drilling with casing |
| 06/17/2004 | US20040112638 Percussion drill head |
| 06/17/2004 | US20040112603 Apparatus and method of drilling with casing |
| 06/16/2004 | EP1428974A2 Expandable wellbore junction |
| 06/16/2004 | EP1163419B1 Control method for use with a steerable drilling system |
| 06/15/2004 | US6749033 Polycrystalline diamond partially depleted of catalyzing material |
| 06/15/2004 | US6749032 Auger cleaning device |
| 06/15/2004 | US6749031 Drilling system |
| 06/15/2004 | US6749030 Integrated transmitter surveying while boring entrenching powering device for the continuation of a guided bore hole |
| 06/15/2004 | US6749029 Automated bore planning method and apparatus for horizontal directional drilling |
| 06/13/2004 | CA2640104A1 Apparatus and method of drilling with casing |
| 06/10/2004 | WO2004048745A1 Steerable drill bit arrangement |
| 06/10/2004 | WO2004048744A2 Apparatus and method for drilling and reaming a borehole |
| 06/10/2004 | US20040108739 Whipstock retrieving overshot |
| 06/10/2004 | US20040108142 Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells |
| 06/10/2004 | US20040108139 Boring machine |
| 06/10/2004 | US20040108110 Method and system for accessing subterranean deposits from the surface and tools therefor |
| 06/10/2004 | US20040108108 Methods and apparatus to control downhole tools |
| 06/10/2004 | CA2505556A1 Steerable drill bit arrangement |
| 06/09/2004 | DE202004005461U1 Underground pipeline laying device with adjacent hydraulically-operated ram cylinders acting on pipeline run coupled together via cross members |
| 06/09/2004 | CN2620073Y Tower-shaped truss self-propelled pile support |
| 06/09/2004 | CN1503874A Method of drilling an ultra-short radius borehole |
| 06/09/2004 | CN1502783A Direction control technological device for bit of horizontal screw drill machine |
| 06/08/2004 | US6745855 Method and system for hydraulic friction controlled drilling and completing geopressured wells utilizing concentric drill strings |
| 06/08/2004 | US6745854 Electrically sequenced tractor |
| 06/08/2004 | US6745853 Methods and apparatus for open hole drilling |
| 06/08/2004 | US6745852 Platform for drilling oil and gas wells in arctic, inaccessible, or environmentally sensitive locations |
| 06/06/2004 | CA2444648A1 Anchoring device for a wellbore tool |
| 06/03/2004 | WO2004046499A1 Method of forming a window in a casing |
| 06/03/2004 | WO2004046496A1 Bit assembly for a hammering drill |
| 06/03/2004 | US20040105806 Polycrystalline diamond partially depleted of catalyzing material |
| 06/03/2004 | US20040105728 Device for producing bored piles |
| 06/03/2004 | US20040104052 Reverse circulation directional and horizontal drilling using concentric coil tubing |
| 06/03/2004 | US20040104051 [directional casing drilling] |
| 06/03/2004 | US20040104050 Method for drilling and drilling apparatus |
| 06/03/2004 | CA2506605A1 Bit assembly for a hammering drill |
| 06/02/2004 | EP1161612B1 Drill for making wide diameter and high depth holes and method for carrying out said holes |
| 06/02/2004 | CN2619042Y Jet flow drilling system |
| 06/02/2004 | CN2619041Y Rotary disc rotation guide drilling tool |
| 06/02/2004 | CN1500966A Apparatus and method for sampling an earth formation through a cased borehole |
| 06/01/2004 | US6742606 Method and apparatus for drilling and lining a wellbore |
| 06/01/2004 | US6742604 Rotary control of rotary steerables using servo-accelerometers |
| 06/01/2004 | US6742603 Hydrothermal drilling method and system |
| 05/27/2004 | WO2004044381A1 Method to install underground pipe casing |
| 05/27/2004 | WO2004044366A2 Method and apparatus for varying the density of drilling fluids in deep water oil drilling applications |
| 05/27/2004 | US20040099444 Steerable underreaming bottom hole assembly and method |
| 05/27/2004 | DE202004003872U1 Drive connection for reinforced concrete pipe sections has wooden load ring insert to fit into gap between pipe sections |
| 05/27/2004 | CA2504950A1 Method to install underground pipe casing |
| 05/26/2004 | CN2617909Y Earth boring machine for planting |
| 05/26/2004 | CN1500175A Method for drilling and drilling appts. |
| 05/26/2004 | CN1500174A Method and system for accessing subterranean zones from limited surface area |
| 05/25/2004 | US6739413 Using a rotating inner member to drive a tool in a hollow outer member |
| 05/25/2004 | US6739410 Sonic drill head |
| 05/25/2004 | US6739392 Forming a wellbore casing while simultaneously drilling a wellbore |
| 05/25/2004 | US6739214 Polycrystalline diamond partially depleted of catalyzing material |
| 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 | WO2002099241B1 Method and apparatus for determining drilling paths to directional targets |
| 05/20/2004 | US20040094332 Jet cutting device with deflector |
| 05/19/2004 | EP1419308A1 Drilling tool |
| 05/19/2004 | CN2616654Y Drilling and rod cutting-down machine |
| 05/18/2004 | US6736222 Relative drill bit direction measurement |
| 05/18/2004 | US6736219 Underground horizontal boring apparatus |
| 05/13/2004 | WO2004040094A1 Re-entry in multilateral wellsbores |
| 05/13/2004 | WO2003029603A8 Wellbore system for simultaneous drilling and production |
| 05/13/2004 | WO2002061238A8 Method and system for accessing a subterranean zone from a limited surface area |
| 05/13/2004 | US20040089480 Downhole motor locking assembly and method |
| 05/13/2004 | US20040089479 Auger cleaning device |
| 05/13/2004 | US20040089478 Lockable motor assembly for use in a well bore |
| 05/13/2004 | US20040089477 Sprung member and actuator for downhole tools |
| 05/13/2004 | US20040089473 Backreaming tool |
| 05/13/2004 | US20040089443 One trip milling system |
| 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 | EP1105617B1 Whipstock |
| 05/12/2004 | CN2615323Y Recoverable whipstock |
| 05/12/2004 | CN2615322Y High-pressure jet-flow radial level drilling well system |
| 05/12/2004 | CN2615321Y Pulling drill block |
| 05/12/2004 | CN1496437A Mining and tunnelling device |
| 05/11/2004 | US6732816 Method of forming a trenchless flowline |
| 05/11/2004 | US6732801 Apparatus and method for completing a junction of plural wellbores |
| 05/11/2004 | US6732792 Multi-well structure for accessing subterranean deposits |
| 05/06/2004 | WO2004025042A3 Method of installing adjustable flange on tube |
| 05/06/2004 | US20040085790 Autobias driving a high frequency power system |
| 05/06/2004 | US20040084219 Three-dimensional steering tool for controlled downhole extended-reach directional drilling |
| 05/06/2004 | US20040084215 Ice auger |
| 05/06/2004 | US20040084214 System for drilling oil and gas wells using a concentric drill string to deliver a dual density mud |
| 05/06/2004 | EP1181432B1 Method of creating a wellbore |
| 05/06/2004 | DE10053567B4 Bohrwerkzeug und Vorrichtung zum Erzeugen einer Umfangsbohrung A drilling tool and means for generating a circumferential bore |
| 05/06/2004 | CA2411390A1 Ice auger |