| Patents for E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells (2,021) |
|---|
| 06/18/2008 | EP1792051A4 Arrangement for controlling percussive rock drilling |
| 06/17/2008 | US7389183 Method for determining a stuck point for pipe, and free point logging tool |
| 06/12/2008 | US20080136419 Apparatus and system for well placement and reservoir characterization |
| 06/12/2008 | US20080135301 Arrangement For Sucking Dust |
| 06/12/2008 | US20080135299 Apparatus and Method for Characterizing a Reservoir |
| 06/11/2008 | CN101198763A Rock drill and method of breaking rock |
| 06/10/2008 | US7383889 Mono diameter wellbore casing |
| 06/05/2008 | US20080128167 Device for Handling of Pipes at a Drill Floor |
| 06/04/2008 | CN101194083A Annular packer device |
| 06/03/2008 | US7380599 Apparatus and method for characterizing a reservoir |
| 06/03/2008 | US7380590 Rotating pressure control head |
| 06/03/2008 | CA2519325C Methods and apparatus for expanding tubular strings and isolating subterranean zones |
| 06/03/2008 | CA2517208C Apparatus for radially expanding and plastically deforming a tubular member |
| 05/27/2008 | US7377339 System and method for damping vibration in a drill string |
| 05/27/2008 | US7377328 Expandable anchor |
| 05/27/2008 | US7377326 Magnetic impulse applied sleeve method of forming a wellbore casing |
| 05/22/2008 | US20080115953 Rock Drilling Device |
| 05/22/2008 | US20080115927 Well Pump Device |
| 05/21/2008 | EP1733118B1 Clamping apparatus, drill string component and rock drilling rig |
| 05/21/2008 | CN101184904A Method and means for providing time delay in downhole well operations |
| 05/20/2008 | US7373990 Method and apparatus for expanding and separating tubulars in a wellbore |
| 05/20/2008 | US7373978 Method for drilling and completing wells |
| 05/14/2008 | EP1920319A1 Adaptive user interface for rock drilling rig |
| 05/14/2008 | EP1920134A1 User interface for rock drilling rig |
| 05/14/2008 | CN100387783C Method of installation of a tension leg platform |
| 05/13/2008 | CA2511678C Automated control system for back-reaming |
| 05/07/2008 | EP1917444A1 Pressure accumulator to establish sufficient power to handle and operate external equipment, and use thereof |
| 05/01/2008 | US20080100064 Protective Compression and Tension Sleeves for Threaded Connections for Radially Expandable Tubular Members |
| 04/30/2008 | EP1751393A4 Telescopic feed beam for rock drill |
| 04/30/2008 | CN101171399A Packer-anchoring device |
| 04/29/2008 | CA2498987C Drillable bridge plug |
| 04/22/2008 | US7360601 Submersible well pump installation procedure |
| 04/17/2008 | US20080087467 Arrangement for Controlling Percussive Rock Drilling |
| 04/17/2008 | US20080087423 Method and Apparatus for a Monodiameter Wellbore, Monodiameter Casing, Monobore, and/or Monowell |
| 04/16/2008 | EP1910641A1 Adjustable winged centering tool for use in pipes with varying diameter |
| 04/09/2008 | EP1907664A1 System and method for dynamic sealing around a drill stem |
| 04/09/2008 | CN101160450A Method, arrangement and valve for controlling rock drilling |
| 04/08/2008 | US7354026 Unitary blade seal for a shearing blind ram in a ram type blowout preventer |
| 04/08/2008 | US7353871 Downhole automatic tool release and method of use |
| 04/02/2008 | CN101155972A Sound source for stimulation of oil reservoirs |
| 04/01/2008 | US7350598 Downhole tool |
| 04/01/2008 | US7350566 Well completion with merged influx of well fluids |
| 04/01/2008 | US7350563 System for lining a wellbore casing |
| 03/25/2008 | US7347279 Charge holder apparatus |
| 03/25/2008 | US7347275 Apparatus and method to detect actuation of a flow control device |
| 03/25/2008 | US7347270 Redundant hydraulic system for safety valve |
| 03/19/2008 | EP1899577A1 Arrangement for controlling pressure-fluid-operated drilling equipment |
| 03/19/2008 | EP1899573A1 Power tong device |
| 03/12/2008 | EP1896691A1 Arrangement for positioning rock drilling rig on drilling site |
| 03/12/2008 | EP1896684A1 Arrangement for positioning drilling unit |
| 03/12/2008 | EP1896195A1 Apparatus for sieving and fluid separation and a method of using same |
| 03/11/2008 | US7341117 Method and apparatus for a monodiameter wellbore, monodiameter casing, monobore, and/or monowell |
| 03/06/2008 | US20080053706 Continuous monobore liquid lining system |
| 03/06/2008 | US20080053704 Device for Gripping and Transporting Pipe Lengths and an Intermediate Storage Facility for Storage of Pipes |
| 03/05/2008 | EP1759087B1 A method of filtering pump noise |
| 02/27/2008 | EP1583886A4 Isolated electrical connection in a drill string |
| 02/26/2008 | US7334651 Kick warning system using high frequency fluid mode in a borehole |
| 02/21/2008 | US20080042428 Protective compression and tension sleeves for threaded connections for radially expandable tubular members |
| 02/20/2008 | EP1888875A1 Packer-anchoring device |
| 02/19/2008 | US7331396 Subsea production systems |
| 02/14/2008 | US20080039347 as gelling agent, viscosifier; for use in industrial, oilfield, geothermal, coal, coal bed methane, and/or subterranean operations |
| 02/14/2008 | US20080039345 Providing a water-based drilling fluid comprising an effective amount of a choline salt, foamer, and water; circulating the drilling fluid through the wellbore hole during drilling, and injecting a gas into wellbore hole to reduce hydrostatic pressure of the drilling fluid |
| 02/13/2008 | EP1885994A1 A device for selective movement of well tools and also a method of using same |
| 02/13/2008 | EP1774137B1 System for delivery of a tracer in fluid transport systems and use thereof |
| 02/05/2008 | US7325633 Rock drill bit and a thread joint therefor |
| 01/29/2008 | US7322425 Method of generating stress pulse in tool by means of pressure fluid operated impact device, and impact device |
| 01/24/2008 | US20080018099 Protective compression and tension sleeves for threaded connections for radially expandable tubular members |
| 01/24/2008 | US20080017387 Methods for expanding tubular strings and isolating subterranean zones |
| 01/23/2008 | EP1880077A1 Pulling tool for use in oil and gas wells |
| 01/22/2008 | CA2501190C Apparatus and method for completing a wellbore |
| 01/17/2008 | US20080011516 Method for Casing Drilling, Drilling Unit and Adapter Device |
| 01/16/2008 | EP1877645A1 Annular packer device |
| 01/09/2008 | EP1875042A1 Method, arrangement and valve for controlling rock drilling |
| 01/09/2008 | EP1875037A1 Valve |
| 01/09/2008 | EP1774132B1 A drill bit |
| 01/08/2008 | US7316277 Bottom hole assembly |
| 01/03/2008 | US20080000666 Method for Breaking Rock |
| 01/02/2008 | CN101099025A Arrangement for sucking dust |
| 12/27/2007 | WO2004027199A8 Accelerated production of gas from a subterranean zone |
| 12/26/2007 | EP1870558A2 Top drive swivel apparatus and method |
| 12/26/2007 | EP1869287A2 Rock drill and method of breaking rock |
| 12/26/2007 | EP1869281A1 Drilling- or service rig |
| 12/26/2007 | CN101095239A High temperature memory device |
| 12/25/2007 | US7313480 Integrated drilling dynamics system |
| 12/25/2007 | US7311154 Line slack compensator |
| 12/25/2007 | US7311141 Casing scraper |
| 12/20/2007 | US20070292214 Bend stiffener |
| 12/19/2007 | EP1866518A1 A method and a device for in situ formation of a seal in an annulus in a well |
| 12/13/2007 | US20070284148 System and method for damping vibration in a drill string |
| 12/12/2007 | EP1540131B8 "top drive swivel apparatus and method" |
| 12/11/2007 | US7307425 Receiver electronics proximate antenna |
| 12/11/2007 | US7306404 Device and a method for well intervention |
| 12/11/2007 | US7306042 Method for completing a well using increased fluid temperature |
| 12/11/2007 | US7306033 Apparatus for isolating zones in a well |
| 12/06/2007 | US20070278788 Protective compression and tension sleeves for threaded connections for radially expandable tubular members |
| 12/05/2007 | EP1606493B1 Automated control system for back-reaming |
| 12/04/2007 | US7303016 Casing with isolated annular space |
| 12/04/2007 | US7303011 Downhole formation testing tool |
| 12/04/2007 | US7303006 Method for improved vertical sweep of oil reservoirs |
| 11/29/2007 | WO2003097987A3 A device for a long well tool |