| Patents for E21B 21 - Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor (13,780) |
|---|
| 05/29/2008 | CA2670093A1 Assembly for pressure control when drilling and method to control pressure when drilling in a formation with unpredictable high formation pressure |
| 05/28/2008 | CN101187299A Automatic slurry-mixing device |
| 05/28/2008 | CN101187298A Super deep water injection well movable type water treatment and well washing technology |
| 05/28/2008 | CN101187297A Closed sand-washing sand-removing oil-collecting technology for oil and water well, and device therefor |
| 05/28/2008 | CA2612348A1 Recycling of oil-based drilling muds |
| 05/27/2008 | US7378443 Fatty acid analogues for the treatment of cancer |
| 05/27/2008 | US7378378 Rheology enhancers |
| 05/27/2008 | US7377721 Methods for using reversible phase oil-based drilling fluid |
| 05/27/2008 | US7377336 Modular pressure control and drilling waste management apparatus for subterranean borehole |
| 05/27/2008 | US7377283 Coiled tubing wellbore cleanout |
| 05/27/2008 | CA2458541C Vibratory separator and screen assembly |
| 05/24/2008 | CA2612392A1 Centrifugal pump with screw pump accelerator and reverse flow vane |
| 05/22/2008 | WO2008058392A1 Fluid recovery apparatus and method |
| 05/22/2008 | CA2669775A1 Fluid recovery apparatus and method |
| 05/21/2008 | EP1922156A2 Method and apparatus for angularly positioning a shaker separator bed |
| 05/21/2008 | DE202008004473U1 Bohrantriebseinheit für ein Doppelbohrgestänge Bohrantriebseinheit for a Doppelbohrgestänge |
| 05/21/2008 | CN201062515Y Intelligent synchronous seal-checking and flow metering and adjusting instrument |
| 05/21/2008 | CN201062496Y Oil field well-washing manifold truck |
| 05/20/2008 | US7373980 Mono-trip cement thru completion |
| 05/20/2008 | CA2466096C Proppant recovery system |
| 05/15/2008 | US20080113880 Solid-liquid separation of oil-based muds |
| 05/15/2008 | US20080110673 Apparatus and methods for drilling a wellbore using casing |
| 05/15/2008 | US20080110637 Top drive casing system |
| 05/15/2008 | US20080110627 Well Treating Method to Prevent or Cure Lost-Circulation |
| 05/14/2008 | CN101180448A Water based completion and displacement fluid and method of use |
| 05/14/2008 | CN101180447A Invert emulsion based completion and displacement fluid and method of use |
| 05/13/2008 | US7370698 Method and apparatus for transferring rig weight to tubulars |
| 05/13/2008 | CA2481539C Automatic downlink system |
| 05/13/2008 | CA2473511C Apparatus for wellbore communication |
| 05/13/2008 | CA2441682C Method and apparatus for sawing or drilling concrete |
| 05/07/2008 | EP1918227A2 Transfer of finely ground weight material |
| 05/07/2008 | EP1654437B1 Electrical treatment for oil based drilling or completion fluids |
| 05/07/2008 | EP1208285B1 Method and apparatus for displacing drilling fluids with completion and workover fluids, and for cleaning tubular members |
| 05/07/2008 | CN201057004Y Baffle box housing body |
| 05/07/2008 | CN201057003Y Drilling fluid cleaning system device |
| 05/07/2008 | CN201057002Y High-efficiency safe sand-washing tubular pile |
| 05/06/2008 | US7367411 Drilling system and method |
| 05/03/2008 | CA2609851A1 Methods to enhance the pneumatic handling characteristics of weighting agents |
| 05/02/2008 | WO2008051132A1 Air actuated down- the -hole hammer and drill bit and foot valve for use in the hammer |
| 05/02/2008 | WO2008050138A1 Method of remediating well bore drilling cuttings |
| 05/02/2008 | WO2008007252A3 Integrated pump assembly for well completion |
| 05/02/2008 | CA2665235A1 Air actuated down-the-hole hammer and drill bit and foot valve for use in the hammer |
| 05/01/2008 | US20080099195 Method and apparatus for isolating and testing zones during reverse circulation drilling |
| 04/30/2008 | EP1915507A1 Device for conducting cementing operations and inflow regulation |
| 04/29/2008 | CA2486091C Controlling a pressure transient in a well |
| 04/29/2008 | CA2457902C Method and system for extraction of resources from a subterranean well bore |
| 04/29/2008 | CA2373515C Drilling system |
| 04/29/2008 | CA2317858C Method for the removal and recovery of the oil component from drill cuttings |
| 04/24/2008 | US20080093124 Apparatus and methods for drilling a wellbore using casing |
| 04/24/2008 | US20080093078 Apparatus and Methods to Remove Impurities at a Sensor in a Downhole Tool |
| 04/23/2008 | EP1913232A2 Triple valve blow out preventer |
| 04/23/2008 | EP1700000B1 Underbalanced well drilling and production |
| 04/23/2008 | CN101166886A Stimulation tool having a sealed ignition system |
| 04/22/2008 | US7360611 Flow system for a hydraulic choke solids strainer |
| 04/17/2008 | WO2007124018A3 Mechanical parts having increased wear resistance |
| 04/17/2008 | US20080087472 Cuttings impoundment |
| 04/16/2008 | EP1911927A2 Method and apparatus for displacing drilling fluids with completion and workover fluids |
| 04/16/2008 | EP1910642A1 Apparatus and method to monitor slurries for waste re-injection |
| 04/16/2008 | EP1910231A2 Metal debris cleanout system and method |
| 04/16/2008 | EP1581718B1 Anchoring device for a wellbore tool |
| 04/16/2008 | CN201047260Y Dust cleaning apparatus for gas drilling |
| 04/15/2008 | US7358635 Magnetic power transmission devices for oilfield applications |
| 04/15/2008 | US7357198 Downhole apparatus |
| 04/15/2008 | CA2469958C Solids control system |
| 04/15/2008 | CA2282342C Bottomhole assembly and methods of use |
| 04/11/2008 | CA2625543A1 Active intake pressure control of downhole pump assemblies |
| 04/10/2008 | WO2008041020A1 Method and apparatus for preparing drill cuttings for reinjection into a well |
| 04/10/2008 | WO2008041018A2 Apparatus and method for separating solids from solids laden drilling mud |
| 04/10/2008 | WO2008041017A2 Apparatus and method for separating solids from solids laden drilling mud |
| 04/10/2008 | WO2007118155A3 Drill cuttings transfer system and related methods |
| 04/10/2008 | WO2007001729A3 Metal debris cleanout system and method |
| 04/10/2008 | US20080083566 Reclamation of components of wellbore cuttings material |
| 04/10/2008 | CA2664850A1 Apparatus and method for separating solids from solids laden drilling mud |
| 04/10/2008 | CA2657525A1 Method and apparatus for preparing drill cuttings for reinjection into a well |
| 04/10/2008 | CA2657142A1 Apparatus and method for separating solids from solids laden drilling mud |
| 04/09/2008 | EP1907663A1 Dth-hammer drilling device and overburden drilling method |
| 04/09/2008 | EP1552103B1 Drill head steering |
| 04/09/2008 | CN101160446A Pumping system |
| 04/09/2008 | CN101158281A Cement through side pocket mandrel |
| 04/09/2008 | CN101158269A Method for drilling roadbed small-caliber horizontal jacking pipe and drill bit |
| 04/09/2008 | CN101158267A Method and system for accessing subterranean deposits from the surface |
| 04/08/2008 | US7353887 Control systems and methods for active controlled bottomhole pressure systems |
| 04/08/2008 | US7353878 Apparatus and method for wellbore isolation |
| 04/08/2008 | CA2444555C Apparatus and methods for drilling with casing |
| 04/08/2008 | CA2427327C Apparatus and method for preparing variable density drilling muds |
| 04/08/2008 | CA2423107C Well drilling method and system |
| 04/08/2008 | CA2381487C A method for a valve, a valve and a wireline core drilling system including said valve |
| 04/03/2008 | WO2008038014A2 Injection molded grid for saving screen frames |
| 04/03/2008 | US20080078583 Method for assembling a modular fluid end for duplex pumps |
| 04/03/2008 | DE102006059171B3 Double drilling-rod type drilling installation, has connection on outer rod for forming liquid connection to annular cavity between rods |
| 04/02/2008 | EP1421253B1 System for controlling the operating pressures within a subterranean borehole |
| 04/02/2008 | CN201043449Y Washing and reverse washing control device of mobile well washing vehicle |
| 04/02/2008 | CN100378435C Electronic measuring device |
| 04/01/2008 | US7351681 viscosity of the servicing fluid increases as it passes down the well bore due to its temperature increasing; cement slurry, drilling fluid, gravel packing fluid, fracturing fluid, completion fluid, or a work-over fluid; water-soluble hydrophobically modified polymer comprising a hydrophobic substituent |
| 04/01/2008 | US7350598 Downhole tool |
| 04/01/2008 | US7350597 Drilling system and method |
| 04/01/2008 | US7350590 Instrumentation for a downhole deployment valve |
| 04/01/2008 | US7350576 Methods of sealing subterranean formations using rapid setting plugging compositions |
| 04/01/2008 | CA2374840C Fluid flow and pressure control system and method |
| 03/26/2008 | EP1454028B1 Proppant recovery system |