| Patents for E21B 19 - Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables (17,198) |
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| 10/19/1994 | EP0408685B1 A method and a device for movement-compensation in riser pipes |
| 10/18/1994 | US5355965 Mounting apparatus for a rotational drive unit |
| 10/12/1994 | CN2179457Y Hydrautic driving safety clamping shoe |
| 10/12/1994 | CN2179456Y Driving clamp for dtatching sucker rod of oil well |
| 10/11/1994 | US5354150 Technique for making up threaded pipe joints into a pipeline |
| 10/05/1994 | CN1026144C Method of installing well conductors |
| 10/04/1994 | US5351767 Drill pipe handling |
| 10/04/1994 | US5351533 Coiled tubing system used for the evaluation of stimulation candidate wells |
| 10/04/1994 | CA2012683C Camming member for power tongs |
| 09/20/1994 | US5348105 Method for aligning a feeding beam in a rock drilling equipment and a rock drilling equipment and a measuring device |
| 09/14/1994 | EP0615054A1 Coiled tubing actuated sampler |
| 09/14/1994 | CN2177086Y Thread self adjustable oil suck rod drill collar |
| 09/11/1994 | CA2118672A1 Coiled tubing actuated sampler |
| 09/06/1994 | US5343962 In an earth drilling machine |
| 08/30/1994 | US5342148 Method and system for developing offshore hydrocarbon reserves |
| 08/30/1994 | US5342020 Speed controller for drilling rig traveling block |
| 08/23/1994 | US5340182 Safety elevator |
| 08/23/1994 | CA1331539C Torque position makeup of tubular connections |
| 08/17/1994 | EP0482158B1 Device for transmitting forces to mobile bodies |
| 08/17/1994 | CN2174560Y Cable-feeding apparatus for tower type derrick |
| 08/10/1994 | EP0472583B1 Arrangement in a pipe handling system |
| 08/09/1994 | USRE34686 Method, system and device for determining quality of assembly of tool parts |
| 08/09/1994 | US5336020 Support and connection device for flexible riser |
| 08/09/1994 | US5335756 Slip-type gripping assembly |
| 08/02/1994 | US5333925 Containment apparatus for manual pipe tongs |
| 08/02/1994 | CA1331126C Arrangement for operating hydraulic actuating means in a rock drilling boom and the like boom construction |
| 07/19/1994 | US5330012 For a rock drill |
| 07/14/1994 | CA2087198A1 Hydraulic rod pusher-puller apparatus |
| 07/07/1994 | WO1994015060A1 Slip-type gripping assembly |
| 07/07/1994 | CA2130439A1 Slip-type gripping assembly |
| 06/29/1994 | CN2170369Y Power safety slip |
| 06/28/1994 | US5323800 Washer for a portable self-contained ground water testing assembly |
| 06/23/1994 | WO1994013926A1 A mole launcher and a method of operating a mole launcher |
| 06/23/1994 | CA2150697A1 A mole launcher and a method of operating a mole launcher |
| 06/16/1994 | DE4244732A1 Method of controlling a rope-driven hoist |
| 06/08/1994 | CN2168065Y Well drill crane collision preventing device |
| 06/07/1994 | US5318385 Supporting system for lines and conductor pipes at offshore platforms |
| 06/07/1994 | US5318125 Method for continuing measurements after recovery of a measuring tool immobilized in a well |
| 06/01/1994 | CN2167183Y Slip of polish rod for oil-pumping machine |
| 05/31/1994 | US5316092 Method and apparatus for drilling a tunnel |
| 05/26/1994 | WO1994011291A1 Apparatus for gripping a down hole tubular |
| 05/26/1994 | DE4300287A1 Tree-reclamation system - fills holes at set distance successively with separating, nutrient and loose filler materials |
| 05/17/1994 | US5311937 Extractor for an injection pipe |
| 05/10/1994 | US5310007 Tensioning ring and riser assembly for an oil well platform tensioning apparatus |
| 05/10/1994 | US5309990 Coiled tubing injector |
| 05/04/1994 | EP0595439A2 Drill pipe breakout device |
| 05/03/1994 | US5307882 Apparatus for feeding a drilling machine in extension rod drilling |
| 04/30/1994 | CA2104924A1 Drill pipe breakout device |
| 04/27/1994 | EP0593803A1 Positioning device for loads |
| 04/24/1994 | CA2081245A1 Well pipe hoist and hoisting method |
| 04/20/1994 | EP0592653A1 Tubular handling system |
| 04/19/1994 | US5303549 In a machine tool |
| 04/12/1994 | CA1328399C Process and means for measuring geological formations properties in a horizontal borehole drilled from an underground patch |
| 04/06/1994 | CN1084934A Negative camber roll climbing clamping type hydraulic back pincers |
| 04/05/1994 | US5299790 Elastomeric strut for an elastomeric riser tensioner |
| 03/31/1994 | WO1994007000A1 Feed beam for rock drill |
| 03/31/1994 | WO1994006999A1 Arrangement for measuring the position of a feed beam in a rock drilling apparatus and/or measuring the position of a rock drill |
| 03/31/1994 | WO1994002706A3 Rod accumulator riser tensioning cylinder assembly |
| 03/30/1994 | EP0589823A1 Safety pipe string elevator |
| 03/29/1994 | US5297833 Apparatus for gripping a down hole tubular for support and rotation |
| 03/29/1994 | US5297642 Apparatus for storing drill rods |
| 03/17/1994 | WO1994005894A1 Insert for use in slips |
| 03/17/1994 | DE4227645A1 Sicherheitsvorrichtung für einen Rohrelevator Safety device for a pipe elevator |
| 03/15/1994 | US5294228 Automatic sequencing system for earth drilling machine |
| 03/10/1994 | DE4229345A1 Vorrichtung zum Einleiten von Kräften in bewegbare Körper Apparatus for introducing forces in movable body |
| 03/08/1994 | US5292108 Auxiliary vehicle for electrically powering a well pipe extractor |
| 03/08/1994 | US5291956 Coiled tubing drilling apparatus and method |
| 03/08/1994 | US5291808 Ring gear camming member |
| 03/03/1994 | WO1994004788A1 Elevator for raising and lowering a pipe string |
| 03/02/1994 | EP0436706B1 Apparatus for recovering a wellhead |
| 03/01/1994 | US5289887 Method of operating an earth boring machine |
| 03/01/1994 | US5289845 Oilfield tubing reel and reel assembly |
| 02/22/1994 | CA1327195C Top head drive assembly for earth drilling machine and components thereof |
| 02/16/1994 | CN2156280Y Safety stop-pin device |
| 02/09/1994 | EP0581830A1 Earth borer |
| 02/08/1994 | US5284375 For a drill rig |
| 02/03/1994 | WO1994002706A2 Rod accumulator riser tensioning cylinder assembly |
| 02/02/1994 | EP0580678A1 A method and an equipment for adjusting rock drilling. |
| 02/01/1994 | US5282302 Sucker rod guide clamping devices |
| 01/25/1994 | CA2017149C Closed loop hydraulic drill feed system |
| 01/20/1994 | WO1994001249A1 Ring gear camming member |
| 01/19/1994 | EP0579294A1 Pressing apparatus for the underground forcing of pipes from a pressing pit into the soil |
| 01/18/1994 | US5279372 Method of drilling holes in rock |
| 01/18/1994 | US5279364 Guide arch for tubing |
| 01/11/1994 | US5277463 Drill pipe handling tool |
| 01/11/1994 | CA1326048C Apparatus for handling rods |
| 01/04/1994 | US5275246 Drill string bridge coupler and actuator |
| 01/04/1994 | US5275198 Portable self-contained ground water testing assembly |
| 12/29/1993 | CN2151246Y Torsion controller for screwing slip spide |
| 12/28/1993 | US5273388 Lifting device for down hole tubulars |
| 12/28/1993 | US5273124 Earth drilling apparatus |
| 12/28/1993 | US5272925 For driving drill pipe in rotation |
| 12/23/1993 | WO1993025796A1 Apparatus for connecting and disconnecting threaded members |
| 12/23/1993 | WO1993022535A3 Tubular handling system |
| 12/21/1993 | US5271298 Apparatus for connecting and disconnecting pipe connection of a drilling string |
| 12/16/1993 | DE4217695A1 Mobile drilling system for hollow worm drilling - has slide on drill mast which is attached to vehicle, and accommodates rotating drive and has hole through which cable core device may run |
| 12/15/1993 | EP0573718A1 Moving apparatus for the automatic collection of ground samples |
| 12/14/1993 | US5269629 Elastomeric swivel support assembly for catenary riser |
| 12/14/1993 | US5269107 Mobile boring rig |
| 12/07/1993 | US5267621 Drill pipe breakout device |