| 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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| 02/23/2000 | EP0980463A1 Using equipment in a well system |
| 02/23/2000 | EP0702746B1 System for in situ replacement of cutting means for a ground drill |
| 02/22/2000 | US6028534 Formation data sensing with deployed remote sensors during well drilling |
| 02/22/2000 | US6026911 Downhole tools using artificial intelligence based control |
| 02/22/2000 | US6026903 Bidirectional disappearing plug |
| 02/22/2000 | US6026900 Multiple liner method for borehole access |
| 02/22/2000 | US6026899 High expansion slip system |
| 02/15/2000 | USRE36566 Spoolable coiled tubing mandrel and gas lift valves |
| 02/09/2000 | EP0978629A2 Method of completing a well |
| 02/09/2000 | EP0977931A1 Multizone production monitoring system |
| 02/09/2000 | CN2363046Y Oil pumping rod releaser |
| 02/03/2000 | WO2000005483A1 Connection of tubulars using a top drive |
| 02/03/2000 | WO1999060244A9 Multiple lateral hydraulic drilling apparatus and method |
| 02/03/2000 | WO1999058809A3 Coupling with shape-memory material, disconnecting tool with a piston and coupling with valves |
| 02/02/2000 | CN2361825Y Releasing device |
| 02/01/2000 | US6021095 Method and apparatus for remote control of wellbore end devices |
| 02/01/2000 | US6019173 Multilateral whipstock and tools for installing and retrieving |
| 01/27/2000 | WO2000004272A1 Drill string retrieving apparatus |
| 01/27/2000 | CA2342112A1 Drill string retrieving apparatus |
| 01/26/2000 | EP0973994A1 Apparatus for removing an item from a wellbore |
| 01/26/2000 | EP0840834A4 Apparatus and process for drilling and completing multiple wells |
| 01/26/2000 | CN2360585Y Hole sealing appts. for level high pressure spirally spraying pile |
| 01/26/2000 | CN2360584Y Anti-dropping milling appts. |
| 01/25/2000 | USRE36526 Retrievable through tubing tool and method |
| 01/25/2000 | USRE36525 Spoolable flexible hydraulically set, straight pull release well packer |
| 01/25/2000 | US6016845 Composite spoolable tube |
| 01/19/2000 | EP0851966A4 System for selective re-entry to completed laterals |
| 01/19/2000 | CN2359449Y Guide grinding-milling shoe |
| 01/18/2000 | US6015018 Method and apparatus for moving a piston |
| 01/18/2000 | CA2147901C Borehole sidetrack locator |
| 01/18/2000 | CA2006935C Remote control device for equipment with needle valve system |
| 01/15/2000 | CA2270741A1 Gripping apparatus for power tongs and backup tools |
| 01/12/2000 | CN1240872A Conveying tool along non-vertical well |
| 01/11/2000 | US6012528 Method and apparatus for replacing a packer element |
| 01/11/2000 | US6012527 Method and apparatus for drilling and re-entering multiple lateral branched in a well |
| 01/11/2000 | US6012526 Method for sealing the junctions in multilateral wells |
| 01/11/2000 | US6012523 Downhole apparatus and method for expanding a tubing |
| 01/11/2000 | US6012518 Electro-hydraulic well tool actuator |
| 01/11/2000 | US6012516 Deviated borehole drilling assembly |
| 01/06/2000 | WO2000000717A1 Sidepocket mandrel for orienting a gas lift valve |
| 01/05/2000 | EP0969181A2 Diverter apparatus |
| 01/05/2000 | EP0839255A4 Safeguarded method and apparatus for fluid communication using coiled tubing, with application to drill stem testing |
| 01/04/2000 | US6009943 Liner assembly and method |
| 01/04/2000 | US6009942 Wye block having a rotary guide incorporated therein |
| 01/04/2000 | US6009941 Apparatus for axially displacing a downhole tool or a tubing string in a well bore |
| 12/29/1999 | WO1999057410A3 Method of and device for production of hydrocarbons |
| 12/28/1999 | US6006832 Method and system for monitoring and controlling production and injection wells having permanent downhole formation evaluation sensors |
| 12/28/1999 | US6006828 Apparatus for the remote deployment of valves |
| 12/23/1999 | WO1999066172A1 Method and system for measuring data in a fluid transportation conduit |
| 12/23/1999 | WO1999066171A2 Method and system for moving equipment into and through an oil and/or gas production well |
| 12/22/1999 | EP0837978B1 Single trip whipstock assembly |
| 12/22/1999 | CN1239531A Deformed multiple well template and process of use |
| 12/21/1999 | US6003621 Methods and apparatus for drilling holes laterally from a well |
| 12/21/1999 | US6003607 Wellbore equipment positioning apparatus and associated methods of completing wells |
| 12/21/1999 | US6003606 Puller-thruster downhole tool |
| 12/21/1999 | US6003601 Methods of completing a subterranean well and associated apparatus |
| 12/15/1999 | EP0964131A2 Conveying a tool along a non-vertical well |
| 12/14/1999 | US6002257 Method and apparatus for well bore hole-finding with simultaneous borehole or formation sensing |
| 12/09/1999 | WO1999063198A1 Mechanical shut-off valve |
| 12/09/1999 | WO1999063197A1 Borehole logging tool with anchoring mechanism |
| 12/09/1999 | WO1999063196A1 System and method for deploying a plurality of tools into a subterranean well |
| 12/08/1999 | EP0862680A4 A sleeve for orientating a tool |
| 12/07/1999 | US5996711 Method and apparatus for locating indexing systems in a cased well and conducting multilateral branch operations |
| 12/07/1999 | US5996697 Static wellhead plug |
| 12/02/1999 | CA2273607A1 Coiled tubing drilling hydraulic disconnect |
| 12/01/1999 | EP0961008A2 Apparatus and method for drilling and completing a deviated borehole |
| 12/01/1999 | EP0961007A2 Expandable wellbore junction |
| 12/01/1999 | EP0960263A2 Tool and method for removing excess cement from the top of a liner after hanging and cementing thereof |
| 12/01/1999 | EP0960262A1 Device by a retrievable bridge plug |
| 12/01/1999 | EP0960261A1 Tool and method for drilling a lateral well |
| 12/01/1999 | EP0960260A1 Tool for making an opening in a tubular in a wellbore |
| 12/01/1999 | EP0815343B1 Flow control tool |
| 11/30/1999 | US5995449 Method and apparatus for improved communication in a wellbore utilizing acoustic signals |
| 11/30/1999 | US5992525 Apparatus and methods for deploying tools in multilateral wells |
| 11/30/1999 | US5992524 Method for isolating multi-lateral well completions while maintaining selective drainhole re-entry access |
| 11/30/1999 | US5992468 Cable anchors |
| 11/30/1999 | US5992250 Apparatus for the remote measurement of physical parameters |
| 11/28/1999 | CA2272679A1 Bore hole safety valves |
| 11/25/1999 | WO1999060244A1 Multiple lateral hydraulic drilling apparatus and method |
| 11/25/1999 | WO1999051851B1 Coil springs for cable support |
| 11/24/1999 | CN1046783C System for insitu replacement of cutting means for a ground drill |
| 11/23/1999 | US5988287 Thru-tubing anchor seal assembly and/or packer release devices |
| 11/23/1999 | US5988286 Cable anchor assembly |
| 11/23/1999 | US5988277 Running tool for static wellhead plug |
| 11/23/1999 | US5988276 Compact retrievable well packer |
| 11/18/1999 | WO1999058815A1 Downhole pump installation/removal system and method |
| 11/18/1999 | WO1999058809A2 Coupling with shape-memory material, disconnecting tool with a piston and coupling with valves |
| 11/18/1999 | CA2325954A1 Downhole pump installation/removal system and method |
| 11/16/1999 | US5984585 Vertical stab tendon bottom connector and method for securing and releasing the same |
| 11/16/1999 | US5984582 Method of extracting a hollow unit laid in the ground |
| 11/16/1999 | US5984006 Emergency release tool |
| 11/11/1999 | WO1999057410A2 Method of and device for production of hydrocarbons |
| 11/10/1999 | EP0954673A2 Apparatus for directing and steering the foremost part of a drillpipe at drillings |
| 11/10/1999 | EP0750716B1 Milling tool |
| 11/09/1999 | US5979572 Flow control tool |
| 11/09/1999 | US5979561 Downhole activation circuit valving |
| 11/09/1999 | US5979550 PC pump stabilizer |
| 11/04/1999 | WO1999039073A3 Method and apparatus for running two tubing strings into a well |
| 11/02/1999 | US5975209 Automatic blanking completion tool |
| 11/02/1999 | US5975208 Method and apparatus for deploying a well tool into a lateral wellbore |