| 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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| 03/29/1984 | WO1984001120A1 Method of producing side-pocket mandrels free of welds |
| 03/27/1984 | US4438811 Latch for use in a well |
| 03/27/1984 | US4438810 Apparatus for decentralizing and orienting a well logging or perforating instrument |
| 03/20/1984 | US4437522 Selective lock for anchoring well tools |
| 03/20/1984 | US4437516 Combination release mechanism for downhole well apparatus |
| 03/13/1984 | US4436152 Shifting tool |
| 03/13/1984 | US4436150 For a well bore |
| 03/13/1984 | CA1163554A1 Device and method for shifting a port collar sleeve |
| 03/13/1984 | CA1163553A1 Pump plug for use in well operations |
| 02/28/1984 | US4433737 Water jet sediment probe |
| 02/28/1984 | CA1162845A1 Locking assembly for well devices |
| 02/28/1984 | CA1162844A1 Locking mandrel |
| 02/21/1984 | US4432423 Apparatus for extended straight line drilling from a curved borehole |
| 02/21/1984 | US4432419 Retrievable plug |
| 02/21/1984 | US4432418 Apparatus for releasably bridging a well |
| 02/21/1984 | US4432416 Well flow control apparatus |
| 02/15/1984 | EP0100708A2 Method and device for seismic signal acquisition in a bore hole |
| 02/14/1984 | US4431069 Method and apparatus for forming and using a bore hole |
| 02/14/1984 | US4431053 For fishing operations |
| 02/07/1984 | US4429741 Self powered downhole tool anchor |
| 02/07/1984 | CA1161751A1 Positive lock-selective release anchor |
| 02/07/1984 | CA1161750A1 Parking tool for pumpdown well completion system |
| 02/07/1984 | CA1161749A1 Locking mandrel for a well flow conductor |
| 01/31/1984 | US4428430 Method for increasing fluid flow circulation |
| 01/31/1984 | US4428422 Device provided with retractable arms for the anchoring of an instrument in a cavity |
| 01/24/1984 | US4427064 Wire line no-blow tool |
| 01/24/1984 | US4427063 Retrievable bridge plug |
| 01/24/1984 | US4426882 For sensing pressure in a well |
| 01/17/1984 | US4425965 Safety system for submersible pump |
| 01/10/1984 | US4424864 Isolation plug |
| 01/04/1984 | EP0097457A2 Apparatus for setting a well tool in a well bore |
| 01/03/1984 | US4423783 Method for plugging a well and bridge plug |
| 12/27/1983 | CA1159363A1 Well system and method |
| 12/27/1983 | CA1159361A1 Method of placing pipe into deviated boreholes |
| 12/20/1983 | US4421323 Oil well string member with static seal |
| 12/13/1983 | US4420044 Flow control system |
| 12/06/1983 | US4418770 Process for retrieving a coring barrel comprising two tubes and retrieving device for such a process |
| 12/06/1983 | US4418756 Method and apparatus for performing operations in well tubing |
| 12/06/1983 | US4418754 Method and apparatus for gravel packing a zone in a well |
| 12/06/1983 | US4418750 Well tool |
| 11/29/1983 | US4417622 Well sampling method and apparatus |
| 11/22/1983 | US4416330 Side pocket mandrel |
| 11/15/1983 | US4415030 Casing re-entry apparatus for use in inclined oil and gas boreholes |
| 11/15/1983 | US4415029 Downhole well tool and anchoring assembly |
| 11/15/1983 | US4415027 Accumulator recharging valve |
| 11/15/1983 | CA1156927A1 Flow controlling apparatus |
| 11/08/1983 | US4413682 Method and apparatus for installing a cementing float shoe on the bottom of a well casing |
| 10/26/1983 | EP0092341A2 Recloseable auxiliary valve and a method of actuating it |
| 10/25/1983 | US4411314 Attachment means for use for insertion and retrieval of a casing packer |
| 10/25/1983 | CA1155759A1 Well tools |
| 10/18/1983 | US4410040 Corrosive environment tension packer |
| 10/18/1983 | CA1155391A1 Packer |
| 10/18/1983 | CA1155390A1 Device for routing a body through a fluid filled pipeline |
| 10/13/1983 | WO1983003457A1 Robot |
| 10/11/1983 | US4408662 Retrievable packer for oil well casing |
| 10/04/1983 | US4407377 Surface controlled blade stabilizer |
| 10/04/1983 | US4407364 Landing nipple for pumpdown well completion system |
| 10/04/1983 | US4407363 Subsurface well apparatus |
| 10/04/1983 | US4407362 Flow control apparatus for wells |
| 09/27/1983 | US4406325 Selective no-go apparatus |
| 09/27/1983 | US4406324 Bottom lock pipe seal assembly |
| 09/27/1983 | CA1154389A1 Conductor pipe plug |
| 09/20/1983 | US4405017 Positive locating expendable plug |
| 09/13/1983 | US4403659 Pressure controlled reversing valve |
| 09/13/1983 | US4403657 Locking mandrel having dogs for latching to a landing nipple and lugs for latching to an operator reciprocal in the landing nipple |
| 09/13/1983 | US4403654 Torque transmitting expansion joint and a hanger assembly incorporating same |
| 08/23/1983 | US4399877 Continuous borehole telemetry system and method |
| 08/23/1983 | US4399873 Retrievable insert landing assembly |
| 08/17/1983 | EP0085989A2 Downhole instrument and methods of manufacturing and using the same |
| 08/16/1983 | US4398601 Parking tool for pumpdown well completion system |
| 08/16/1983 | US4398600 Systems for landing wire line tools at selected levels within a well tubing string |
| 08/09/1983 | US4397351 Packer tool for use in a wellbore |
| 08/02/1983 | US4396061 Locking mandrel for a well flow conductor |
| 07/26/1983 | CA1150624A1 Latch for well tools |
| 07/05/1983 | US4391326 Stinger assembly for oil well tool |
| 07/05/1983 | US4391325 Liner and hydraulic liner hanger setting arrangement |
| 06/28/1983 | US4390065 Apparatus for well treating |
| 06/28/1983 | CA1148851A1 Tracked cable guide assembly to store conductor cable inside a drill pipe |
| 06/21/1983 | US4388971 Hanger and running tool apparatus and method |
| 06/08/1983 | EP0080527A1 Device for shifting a port collar sleeve |
| 05/31/1983 | CA1147258A1 Anchor and anchor positioner assembly |
| 05/31/1983 | CA1147255A1 Hydra-jet slotting tool |
| 05/24/1983 | US4384616 Method of placing pipe into deviated boreholes |
| 05/10/1983 | CA1146066A1 Actuator |
| 05/03/1983 | CA1145663A1 Crossover tool |
| 04/26/1983 | CA1145245A1 Method and apparatus for gravel packing multiple zones |
| 04/20/1983 | EP0077275A2 Pump-down stinger assembly method and apparatus |
| 04/19/1983 | US4380264 Survey tool string |
| 04/12/1983 | US4379561 Well packer |
| 04/12/1983 | US4379493 Method and apparatus for preventing wireline kinking in a directional drilling system |
| 04/12/1983 | US4379488 Latch for well tool |
| 04/12/1983 | CA1144476A1 Liner hanger and running and setting tool |
| 04/05/1983 | US4378839 Well tool |
| 04/05/1983 | US4378838 Pipe wipers and cups therefor |
| 04/05/1983 | CA1144066A1 Side pocket mandrel and method of construction |
| 03/29/1983 | US4378051 Driving device for displacing an element in a conduit filled with liquid |
| 03/22/1983 | US4377207 Tubing anchor |
| 03/22/1983 | CA1143399A1 Pressure seal for pumping instruments through drill rod |
| 03/01/1983 | US4375237 Well equipment setting or retrieval tool |
| 03/01/1983 | CA1141948A1 Apparatus for making multiple orientation measurements in a drill string |