| Patents for E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells (2,021) |
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| 07/27/2006 | US20060163075 Method and apparatus for downhole pipe or casing repair |
| 07/27/2006 | US20060162965 Rock drill bit |
| 07/25/2006 | US7080686 Devices and methods for extraction, transportation and/or release of material |
| 07/20/2006 | WO2006075921A1 A torque converter for use when drilling with a rotating drill bit |
| 07/20/2006 | WO2006075914A1 A device for handling of pipes at a drill floor |
| 07/20/2006 | US20060161289 Drilling apparatus |
| 07/20/2006 | US20060157259 Impact device and method for generating stress pulse therein |
| 07/19/2006 | EP1680477A2 Phospholipid lubricating agents in aqueous based drilling fluids |
| 07/19/2006 | EP1540128A4 Interposed joint sealing layer method of forming a wellbore casing |
| 07/18/2006 | US7077206 Method and apparatus involving an integrated or otherwise combined exit guide and section mill for sidetracking or directional drilling from existing wellbores |
| 07/18/2006 | US7077202 Process for the recovery of oil from a natural oil reservoir |
| 07/18/2006 | CA2412385C A graphical method for designing the trajectory of a well bore |
| 07/18/2006 | CA2385547C Mounting attachment and bearing system for an industrial earth-boring cutter |
| 07/13/2006 | WO2006073312A2 A device for gripping and transporting pipe lengths and an intermediate storage facility for storage of pipes |
| 07/13/2006 | US20060153720 Pump for tail production of oil |
| 07/13/2006 | US20060151169 Method of treating subterranean formations to enhance hydrocarbonproduction using proppants |
| 07/13/2006 | CA2593802A1 A device for gripping and transporting pipe lengths and an intermediate storage facility for storage of pipes |
| 07/12/2006 | EP1678408A2 Three in one combined power unit for nitrogen system, fluid system, and coiled tubing system |
| 07/12/2006 | CN1800578A Apparatus and method for formation evaluation |
| 07/06/2006 | DE102005061761A1 Vorrichtung und Verfahren zur Formationsbewertung Apparatus and method for formation evaluation |
| 07/05/2006 | CN1798899A Drilling apparatus |
| 07/05/2006 | CN1262849C Underground nuclear magnetic resonance logger with programmable pulse serial generator |
| 06/29/2006 | WO2006068873A1 Modular actuator for subsea valves and equipment, and methods of using same |
| 06/29/2006 | WO2006068497A1 Device for storage of tubulars, apparatus for handling tubulars and a method for disassembling a pipe string |
| 06/29/2006 | US20060142166 Method using particulate chelates to stimulate production of petroleum in carbonate formations |
| 06/29/2006 | US20060137884 System, method and apparatus for securing control lines to a well pipe |
| 06/29/2006 | US20060137877 Cutter for wellbore casing |
| 06/28/2006 | EP1558834A4 Methods and apparatus for a subsea tie back |
| 06/27/2006 | US7066284 Method and apparatus for a monodiameter wellbore, monodiameter casing, monobore, and/or monowell |
| 06/27/2006 | US7066267 Downhole tubular splitter assembly and method |
| 06/27/2006 | CA2310043C Method and apparatus for increasing fluid recovery from a subterranean formation |
| 06/23/2006 | CA2658870A1 Performing in-situ, downhole analysis of properties of an unknown formation fluid based on in-situ analysis of like properties of a known fluid |
| 06/22/2006 | WO2006065144A1 A method and a device for sealing a void incompletely filled with a cast material |
| 06/22/2006 | US20060131376 Marking system and method |
| 06/22/2006 | US20060131033 Flow control apparatus for use in a wellbore |
| 06/22/2006 | DE102005060009A1 Kennzeichnungssystem und-verfahren Labeling system and procedures |
| 06/21/2006 | EP1672167A1 Flow control apparatus for use in a wellbore |
| 06/21/2006 | CN1789656A Marking system and method |
| 06/20/2006 | US7062959 Method and apparatus for determining downhole pressures during a drilling operation |
| 06/15/2006 | WO2006062460A1 Arrangement and method for controlling drilling parameters |
| 06/15/2006 | WO2006061459A1 Method for casing drilling, drilling unit and adapter device |
| 06/15/2006 | US20060129338 Pipeline integrity management process |
| 06/15/2006 | US20060128990 Non-corrosive amphoteric surfactants and method of well treatment |
| 06/15/2006 | US20060124300 Method for the circulation of gas when drilling or working a well |
| 06/15/2006 | US20060124297 System and Method for Communicating Along a Wellbore |
| 06/15/2006 | US20060124291 Auto-extending/retracting electrically isolated conductors in a segmented drill string |
| 06/15/2006 | CA2583169A1 Arrangement and method for controlling drilling parameters |
| 06/14/2006 | EP1604323A4 Improvements in drilling apparatus |
| 06/13/2006 | US7060129 Displacement of gelling additive to well bore; crosslinking; forming barrier |
| 06/08/2006 | WO2006059910A1 A system for handling pipes between a pipe rack and a derrick, and also a device for assembling and disassembling pipe stands |
| 06/08/2006 | US20060118335 Automated arm for positioning of drilling tools such as an iron roughneck |
| 06/08/2006 | US20060118303 Well perforating for increased production |
| 06/08/2006 | CA2590505A1 A system for handling pipes between a pipe rack and a derrick, and also a device for assembling and disassembling pipe stands |
| 06/07/2006 | EP1563160B1 Tensioning system for production tubing in a riser at a floating installation for hydrocarbon production. |
| 06/06/2006 | US7058512 Downhole rate of penetration sensor assembly and method |
| 06/01/2006 | US20060116296 Providing a water-based drilling fluid comprising:an effective amount of a choline salt, foamer, andwater;circulating the drilling fluid through the wellbore hole during drilling, andinjecting a gas into wellbore hole to reduce a hydrostatic pressure of the drilling fluid |
| 06/01/2006 | US20060116295 Method of delaying the setting time of crosslinked lost circulation control pills |
| 05/31/2006 | EP1661555A2 Method of delaying the setting time of crosslinked lost circulation control pills |
| 05/31/2006 | EP1660754A2 Automated arm for positioning of drilling tools such as an iron roughneck |
| 05/31/2006 | CN1780962A Method of installation of a tension leg platform |
| 05/30/2006 | US7051818 Three in one combined power unit for nitrogen system, fluid system, and coiled tubing system |
| 05/26/2006 | WO2006054949A1 Percussion device having an adjustable stroke length |
| 05/26/2006 | WO2006054933A1 Rock drill bit |
| 05/26/2006 | WO2006054905A1 Annular pressure control system |
| 05/26/2006 | WO2006054901A1 A method and a device for solvent injection in a subsurface well |
| 05/26/2006 | CA2585564A1 Rock drill bit |
| 05/25/2006 | US20060108121 Riser tensioner with lubricant reservoir |
| 05/25/2006 | US20060108119 Riser rotating control device |
| 05/25/2006 | US20060108115 System and method for fracturing and gravel packing a wellbore |
| 05/24/2006 | EP1659260A2 Riser rotating control device |
| 05/23/2006 | US7048079 Mud saver valve |
| 05/23/2006 | CA2527395A1 Riser rotating control device |
| 05/23/2006 | CA2260176C Hardfacing rock bit cones for erosion protection |
| 05/18/2006 | WO2006052139A1 A method and device for fluid displacement |
| 05/18/2006 | WO2006051168A1 Arrangement for sucking dust |
| 05/18/2006 | WO2005021922B1 Threaded connection for expandable tubulars |
| 05/18/2006 | US20060102356 Device and a method for well intervention |
| 05/18/2006 | US20060102351 water; injecting a dialdehyde and a polymeric material, such as polyvinyl alcohol, which crosslink to form a high viscosity plug; dialdehyde can be the addition polymerization product of 4-(4-formylphenylethenyl)-1-methylpyridinium methosulphonate |
| 05/18/2006 | US20060102343 Drilling, perforating and formation analysis |
| 05/18/2006 | US20060101914 Acoustic emission inspection of coiled tubing |
| 05/18/2006 | CA2588840A1 A method and device for fluid displacement |
| 05/17/2006 | EP1599634A4 Method of installation of a tension leg platform |
| 05/17/2006 | CN1774647A Combined surface and wellbore electromagnetic measurement system and method for determining formation fluid properties |
| 05/16/2006 | US7044685 Method of installation of a tension leg platform |
| 05/11/2006 | US20060096762 Mono-diameter wellbore casing |
| 05/11/2006 | US20060096761 Slip on screen with expanded base pipe |
| 05/11/2006 | US20060096758 Method of treating an oil or gas well with biodegradable low toxicity fluid system |
| 05/10/2006 | EP1654435A2 Changing the temperature of offshore produced water |
| 05/10/2006 | EP1537289A4 New and improved method and apparatus involving an integrated or otherwise combined exit guide and section mill for sidetracking or directional drilling from existing wellbores |
| 05/10/2006 | CN1769644A Kick warning system using high frequency fluid mode in a borehole |
| 05/09/2006 | US7040456 Elevator car drive and support belt having a twisted orientation |
| 05/04/2006 | WO2006046906A1 Drilling unit |
| 05/04/2006 | WO2006046902A1 A drill rig and a method for controlling a fan therei |
| 05/04/2006 | WO2005024171B1 Expandable tubular |
| 05/04/2006 | US20060095240 System and Method for Placement of a Packer in an Open Hole Wellbore |
| 05/04/2006 | CA2582258A1 Drilling unit |
| 05/04/2006 | CA2575711A1 A drill rig and a method for controlling a fan therein |
| 05/03/2006 | EP1651391A1 Impact device and method for generating stress pulse therein |
| 05/03/2006 | EP1651390A1 Method of generating stress pulse in tool by means of pressure fluid operated impact device, and impact device |
| 04/27/2006 | WO2006043878A1 Drill bushing |