| Patents for E21B 23 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells (12,712) |
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| 10/27/1999 | EP0952302A2 Downhole force generator |
| 10/27/1999 | EP0952300A1 Method and apparatus for drilling a plurality of offshore underwater wells |
| 10/27/1999 | EP0951623A2 Connector |
| 10/27/1999 | EP0951611A1 Wellbore tractor |
| 10/27/1999 | CA2705595A1 Whipstock, running/retrieval tool and a system for tieing back a liner from a wellbore casing |
| 10/26/1999 | US5971079 Casing filling and circulating apparatus |
| 10/26/1999 | US5971078 Method and apparatus for retrieving downhole tools |
| 10/26/1999 | US5971074 Methods of completing a subterranean well and associated apparatus |
| 10/26/1999 | US5971073 Methods of completing a subterranean well and associated apparatus |
| 10/26/1999 | US5971072 Inductive coupler activated completion system |
| 10/26/1999 | US5971070 Apparatus for completing a subterranean well and associated methods |
| 10/21/1999 | WO1999053170A1 Coated downhole tools |
| 10/21/1999 | WO1999042699A3 Well lock with multiple shear planes |
| 10/19/1999 | US5967816 Female wet connector |
| 10/19/1999 | US5967699 Method and apparatus for launching a pig in a vertical riser pipe |
| 10/19/1999 | US5967229 Device for plugging horizontal or vertical wells in oil or similar drillings |
| 10/14/1999 | WO1999051851A1 Coil springs for cable support |
| 10/13/1999 | EP0948700A2 Whipstock |
| 10/13/1999 | CN2343333Y Position regulator for under-well screw stabilizer |
| 10/13/1999 | CN2343331Y 油管锚 Tubing Anchor |
| 10/12/1999 | US5964294 Apparatus and method for orienting a downhole tool in a horizontal or deviated well |
| 10/12/1999 | US5964288 Radial deformable flexible tube |
| 10/12/1999 | US5964287 To communicate well tools between a first and second wellbore |
| 10/07/1999 | WO1999050528A1 Drillstring with stabilisers for re-entering a primary wellbore |
| 10/05/1999 | US5962819 Clamped receiver array using coiled tubing conveyed packer elements |
| 10/05/1999 | US5961094 Method and apparatus for replacing a packer element |
| 10/05/1999 | US5960874 Flow control assembly |
| 09/30/1999 | WO1999049178A1 A system and method for locating a tool in a wellbore, a tubular and a device for the system |
| 09/28/1999 | US5959547 Well control systems employing downhole network |
| 09/28/1999 | US5957206 Plug for operating a downhole device using tubing pressure |
| 09/28/1999 | US5957201 Verification apparatus and method for a static wellhead plug |
| 09/28/1999 | US5957198 Telescoping joint for use in conduit connected wellhead and zone isolating tool |
| 09/28/1999 | CA2073332C Centralizers for oil well casings |
| 09/27/1999 | CA2262243A1 Method and apparatus for drilling a plurality of offshore underwater wells |
| 09/23/1999 | WO1999047789A1 Pressure actuated downhole tool |
| 09/21/1999 | US5955666 Satellite or other remote site system for well control and operation |
| 09/21/1999 | US5954146 System for in situ replacement of cutting means for a ground drill |
| 09/21/1999 | US5954137 Apparatus and method for avoiding formation impairment during completion of wellbores |
| 09/21/1999 | US5954134 Methods of completing a subterranean well and associated apparatus |
| 09/21/1999 | US5954131 Method and apparatus for conveying a logging tool through an earth formation |
| 09/21/1999 | US5954130 For use in a subterranean well casing |
| 09/16/1999 | WO1999046615A1 Clamped receiver array using coiled tubing conveyed packer elements |
| 09/16/1999 | WO1999031352A3 Isolation system for two producing formations |
| 09/10/1999 | WO1999045231A1 Actuator apparatus and method for downhole completion tools |
| 09/10/1999 | CA2231614A1 Improved no-turn tool |
| 09/08/1999 | EP0940559A2 Apparatus and method for measuring the diameter of a body obtained in the ground by high pressure injection |
| 09/07/1999 | US5947213 In a well bore |
| 09/07/1999 | US5947205 Subterranean wellbore tool |
| 09/07/1999 | US5947198 Downhole tool |
| 09/02/1999 | WO1999027230A3 Method for locating placement of a guide stock in a multilateral well and apparatus therefor |
| 09/02/1999 | WO1999027223A3 Method and apparatus for injecting coil tubing down pipelines |
| 09/01/1999 | EP0938622A1 Method for accelerating production - c-i-p ii |
| 09/01/1999 | CN2336083Y Pipe string internal wall hanger |
| 08/31/1999 | US5944109 Method of completing and producing a subteranean well and associated |
| 08/31/1999 | US5944108 Method for multi-lateral completion and cementing the juncture with lateral wellbores |
| 08/31/1999 | US5944103 Retrievable milling guide anchor apparatus and associated methods |
| 08/31/1999 | US5944102 High temperature high pressure retrievable packer |
| 08/26/1999 | WO1999042699A2 Well lock with multiple shear planes |
| 08/26/1999 | DE19834731C1 Measuring device for bore holes for making high pressure injection bodies |
| 08/26/1999 | DE19828303C1 Aligned stacking of drums containing heat-dissipating radioactive waste in near-vertical bore holes |
| 08/25/1999 | CN2334869Y Smooth rod chuck for screw pump testing |
| 08/24/1999 | US5941310 Monobore completion/intervention riser system |
| 08/24/1999 | US5941309 Method of actuating a tool located in a wellbore |
| 08/24/1999 | US5941306 Ratchet release mechanism for a retrievable well apparatus and a retrievable well apparatus |
| 08/24/1999 | CA2261525A1 Pc pump stabilizer |
| 08/18/1999 | EP0807201B1 Multiple drain drilling and production apparatus |
| 08/11/1999 | EP0935049A2 Wellbore apparatus and methods |
| 08/10/1999 | US5934377 Method for isolating hydrocarbon-containing formations intersected by a well drilled for the purpose of producing hydrocarbons therethrough |
| 08/10/1999 | US5934371 Remotely controlled shut-off valve and variable choke assembly |
| 08/10/1999 | US5934370 Well water flow diverter apparatus |
| 08/05/1999 | WO1999039077A1 Method and apparatus for one-trip insertion and retrieval of a tool and auxiliary device |
| 08/05/1999 | WO1999039073A2 Method and apparatus for running two tubing strings into a well |
| 08/05/1999 | CA2260624A1 Lateral wellbore connection |
| 08/03/1999 | US5931237 Soil testing assemblies |
| 08/03/1999 | CA2029529C Casing valve |
| 07/28/1999 | EP0931906A2 Apparatus and method for downhole tool actuation |
| 07/27/1999 | US5927405 For insertion into a well to displace well fluid |
| 07/27/1999 | US5927402 Down hole mud circulation for wireline tools |
| 07/27/1999 | US5927401 In a central wellbore |
| 07/21/1999 | EP0929772A2 Improved emergency release tool |
| 07/20/1999 | US5924491 Thru-tubing anchor seal assembly and/or packer release devices |
| 07/20/1999 | CA2155916C Early evaluation system |
| 07/15/1999 | CA2223870A1 Surge anchor for downhole assembly |
| 07/14/1999 | EP0928877A2 Apparatus and methods for deploying tools in multilateral wells |
| 07/13/1999 | CA2133161C Electronic blast control system for downhole well operations |
| 07/09/1999 | CA2258379A1 Apparatus and methods for deploying tools in multilateral wells |
| 07/07/1999 | EP0927295A2 Wellbore milling system |
| 07/06/1999 | US5918669 Method and apparatus for remote control of multilateral wells |
| 07/01/1999 | WO1999009291A9 Method and apparatus for moving a piston |
| 06/30/1999 | CN1221468A Hydraulic device to be connected in pipe string |
| 06/29/1999 | US5915474 Multiple drain drilling and production apparatus |
| 06/24/1999 | WO1999031352A2 Isolation system for two producing formations |
| 06/24/1999 | WO1999031348A1 System and method for positioning a tool in a wellbore |
| 06/22/1999 | US5913365 From a well bore |
| 06/22/1999 | CA2121444C Method and apparatus for measuring pipeline corrosion |
| 06/17/1999 | CA2256102A1 Downhole tool actuator |
| 06/15/1999 | US5911275 Apparatus for milling a well casing |
| 06/15/1999 | CA2107210C Retrievable bridge plug and a running tool therefor |
| 06/09/1999 | EP0921267A2 Apparatus and methods for locating tools in subterranean wells |
| 06/09/1999 | EP0712499A4 Improved slick line system with real-time surface display |