| 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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| 07/06/1993 | US5224558 Down hole drilling tool control mechanism |
| 07/06/1993 | US5224556 Downhole activated process and apparatus for deep perforation of the formation in a wellbore |
| 07/06/1993 | US5224547 Retrieving tool for downhole packers utilizing non-rotational workstrings |
| 07/06/1993 | US5224545 Eccentrically actuated perforating guns |
| 06/29/1993 | US5222559 Valves |
| 06/29/1993 | US5222555 Emergency casing hanger system |
| 06/29/1993 | US5222554 Whipstock for oil and gas wells |
| 06/16/1993 | EP0546805A1 Apparatus for communicating electrical signals in a well |
| 06/15/1993 | US5219027 For use in a well bore |
| 06/11/1993 | CA2085028A1 Apparatus and method for communicating electrical signals in a well, including electrical coupling for electric circuits therein |
| 06/10/1993 | WO1993011335A1 Downhole adjustable stabilizer and method |
| 06/10/1993 | CA2124442A1 Downhole adjustable stabilizer and method |
| 06/08/1993 | US5217075 Method and device for carrying out interventions in wells where high temperatures prevail |
| 06/08/1993 | US5217072 Device for carrying out interventions in nonflowing deflected producing wells |
| 06/02/1993 | CN1021072C Downhole jetting tool |
| 06/01/1993 | US5215145 Wedge-set sealing flap for use in subterranean wellbores |
| 06/01/1993 | CA1318660C Articulated downhole instrument assembly for use in a drill string |
| 06/01/1993 | CA1318585C Blowout preventer testing apparatus |
| 05/27/1993 | WO1993010328A1 Downhole tool |
| 05/27/1993 | WO1993010326A1 A steerable drilling assembly for mounting on the end of a drill string to drill a borehole in an underground formation |
| 05/27/1993 | CA2123889A1 A steerable drilling assembly for mounting on the end of a drill string to drill a borehole in an underground formation |
| 05/25/1993 | CA1318241C Above packer perforate test and sample tool and method of use |
| 05/19/1993 | CA2083184A1 Well tubing and tubing collar thereof |
| 05/18/1993 | US5211714 Wireline supported perforating gun enabling oriented perforations |
| 05/18/1993 | US5211226 Metal-to-metal seal for oil well tubing string |
| 05/18/1993 | US5211224 Annular shaped power charge for subsurface well devices |
| 05/13/1993 | WO1993009369A1 Gravel-packed pipeline and method and apparatus for installation thereof |
| 05/13/1993 | CA2121479A1 Gravel-packed pipeline and method and apparatus for installation thereof |
| 05/11/1993 | US5209605 Gravel-packed pipeline and method and apparatus for installation thereof |
| 05/11/1993 | US5209304 Propulsion apparatus for positioning selected tools in tubular members |
| 05/11/1993 | US5209136 For use in a borehole |
| 05/04/1993 | US5207274 Apparatus and method of anchoring and releasing from a packer |
| 05/04/1993 | CA1317216C Inflatable packers and methods of utilization |
| 04/28/1993 | EP0539040A2 Downhole casing valve |
| 04/28/1993 | EP0539020A1 Annulus pressure responsive downhole tool |
| 04/27/1993 | US5205671 Trenchless pipeline replacement |
| 04/27/1993 | US5205357 Latching device |
| 04/22/1993 | CA2081083A1 Low pressure responsive downhole tool with hydraulic lockout |
| 04/20/1993 | US5203414 Method of anchoring a device in a wellbore including opening an orifice between two chambers in response to an electrical signal and moving a piston in response to hydrostatic pressure when the orifice is opened |
| 04/15/1993 | WO1993007356A1 Method, toolstring and tubing element for downhole operation |
| 04/15/1993 | DE4133284A1 Monitoring pipe for rock bursts in mine - consists of pipe for insertion in borehole surrounded near mouth of hole by expanding sleeve holder |
| 04/13/1993 | US5201375 Downhole drilling tool system |
| 04/10/1993 | WO1993007355A1 Well tool and method of use |
| 04/06/1993 | US5200581 Method of coupling a seimic detector module to the wall of a borehole, and a sonde for implementing the method |
| 04/06/1993 | US5199497 Shape-memory actuator for use in subterranean wells |
| 04/06/1993 | CA1315671C Instrument/tool positioning device |
| 04/01/1993 | WO1993006337A1 Method, arrangement and jet pump adapter unit for pumping produced fluids |
| 04/01/1993 | WO1993006336A1 Downhole activated system for perforating a wellbore |
| 04/01/1993 | WO1993006333A1 Downhole activated process and apparatus for centralizing pipe in a wellbore |
| 04/01/1993 | WO1993004257A3 Drilling pipe |
| 03/30/1993 | US5197773 Running and pulling tool |
| 03/30/1993 | US5197547 Wireline set packer tool arrangement |
| 03/30/1993 | US5197546 Snap-in/snap-out anchor |
| 03/30/1993 | CA1315194C Tools for treating subterranean wells |
| 03/30/1993 | CA1315190C Method and apparatus for working or troubleshooting in a well |
| 03/28/1993 | CA2073535A1 Well tool anchoring mechanism with improved slip release |
| 03/23/1993 | US5195591 Permanent whipstock and placement method |
| 03/23/1993 | US5195586 Right-hand on and right-hand off retrieving head |
| 03/18/1993 | WO1993005271A1 Process and device for measuring cable drilled bores |
| 03/18/1993 | WO1993005266A1 Lock mandrel for downhole assemblies |
| 03/18/1993 | WO1992017679A3 Hydraulic release oil tool |
| 03/17/1993 | EP0507838A4 Polymer and asphalt reaction process and polymer-linked-asphalt product |
| 03/16/1993 | US5193615 Apparatus for use in controlling flow through a tubing string suspended and packed off within well bore as well as within the annulus between the tubing string and well bore above and below the packer |
| 03/09/1993 | US5191939 Casing circulator and method |
| 02/23/1993 | US5189262 Advanced motor driven clamped borehole seismic receiver |
| 02/23/1993 | US5188180 Hydraulic circuit for a well tool |
| 02/18/1993 | WO1993004257A2 Drilling pipe |
| 02/18/1993 | WO1992017681A3 Retrievable bridge plug and a running tool therefor |
| 02/18/1993 | CA2093138A1 Drill pipe |
| 02/16/1993 | US5186258 Horizontal inflation tool |
| 02/16/1993 | US5186254 Borehole pumping installation |
| 02/16/1993 | US5186048 To evaluate the fluids produced by pumping from a formation interval well |
| 02/09/1993 | US5184692 Retrievable radiation source carrier |
| 02/09/1993 | US5184676 Self-propelled apparatus |
| 02/03/1993 | EP0526294A1 System for carrying out measurements or interventions in a drilled well or while drilling |
| 02/03/1993 | EP0526293A1 Method and device for carrying out measurements and/or interventions in a drilled well or while drilling |
| 02/03/1993 | CA2075099A1 Method and device for taking measurements and/or action in a bored well or in a well undergoing boring |
| 02/03/1993 | CA2075076A1 System and support for taking measurements in a bored well, and uses of same |
| 02/02/1993 | US5183115 Safety valve |
| 02/02/1993 | US5183113 Down-hole decelerators |
| 02/02/1993 | US5183111 Extended reach penetrating tool and method of forming a radial hole in a well casing |
| 01/27/1993 | EP0524183A1 A borehole, as well as a method and an apparatus for forming it. |
| 01/26/1993 | US5181571 Well casing flotation device and method |
| 01/26/1993 | US5181566 Sidepocket mandrel apparatus and methods |
| 01/26/1993 | US5181565 Well probe able to be uncoupled from a rigid coupling connecting it to the surface |
| 01/20/1993 | EP0524042A1 Apparatus actuated by the hydrostatic pressure of a drilling fluid |
| 01/19/1993 | US5180016 Apparatus and method for placing and for backwashing well filtration devices in uncased well bores |
| 01/19/1993 | US5180015 Hydraulic lockout device for pressure controlled well tools |
| 01/19/1993 | US5180014 System for deploying submersible pump using reeled tubing |
| 01/19/1993 | US5180012 Method for carrying tool on coil tubing with shifting sub |
| 01/19/1993 | US5180011 Method and device for carrying out measuring operations of interventions in a well |
| 01/19/1993 | US5180010 Multiple acting lock for gravel pack system |
| 01/19/1993 | US5180009 Wireline delivery tool |
| 01/19/1993 | US5180007 Low pressure responsive downhold tool with hydraulic lockout |
| 01/19/1993 | CA1312832C Electrical conductor arrangements for pipe system |
| 01/17/1993 | CA2074036A1 Hydraulic actuator using drilling fluid for the control of drill string equipment and method of use |
| 01/12/1993 | US5178216 Wedge lock ring |
| 01/11/1993 | CA2073415A1 Oil well production system |
| 01/05/1993 | US5177241 Synthesis of 1,2-dioxetanes and intermediates therefor |
| 01/05/1993 | US5176207 Underground instrumentation emplacement system |