Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 23 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
Patents for E21B 23 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells (12,712)
02/1983
02/22/1983USRE31155 Pump down system for placing and retrieving subsurface well equipment
02/22/1983CA1141658A1 Method of controlling an erupted marine oil well
02/22/1983CA1141533A1 Calipering tool
02/15/1983US4373752 Well casing hanger assembly
02/08/1983US4372393 Casing bore receptacle
02/01/1983US4371037 Transfer terminal for offshore production
02/01/1983CA1140460A1 Self-discriminating side pocket mandrel and method of manufacturing same
01/1983
01/25/1983US4369840 Anchor and anchor positioner assembly
01/18/1983US4368911 Subsurface conduit setting and pulling tool
01/18/1983US4368780 Kickover tool
01/11/1983CA1139297A1 Turbo-coring device equipped with a following pipe
12/1982
12/28/1982US4365671 Well system
12/28/1982US4365668 Side wall clamp for downhole tools
12/28/1982CA1138419A1 Retractable bit system
12/21/1982US4364587 Safety joint
12/21/1982US4364430 Anchor positioner assembly
12/14/1982US4363359 Locking assembly for well devices
12/14/1982US4363358 Subsurface tubing hanger and stinger assembly
12/07/1982US4362211 Locking mandrel
11/1982
11/30/1982US4361353 Method and apparatus for retrieving wear bushings of various diameters
11/23/1982US4360063 Valve
11/23/1982US4359932 Hydraulic actuator
11/16/1982US4359094 Shear relief valve
11/16/1982CA1135683A1 Pump in core breaker carrier
11/02/1982US4356865 Pump plug for use in well operations
10/1982
10/27/1982EP0063519A2 Pressure controlled reversing valve
10/26/1982US4355686 Well system and method
10/26/1982US4355685 Ball operated J-slot
10/12/1982US4353420 Wellhead apparatus and method of running same
10/12/1982CA1133538A1 Well tubing coupling apparatus
10/12/1982CA1133389A1 Compensating bridge plug
09/1982
09/28/1982US4351116 Apparatus for making multiple orientation measurements in a drill string
09/14/1982US4349072 Method and apparatus for conducting logging or perforating operations in a borehole
09/14/1982US4349071 Cement retainer and setting tool assembly
09/14/1982CA1131545A1 Hydraulic actuator
08/1982
08/31/1982US4346761 Hydra-jet slotting tool
08/24/1982US4345646 Apparatus for chemical cutting
08/24/1982CA1130271A1 Mounting and shock absorber assembly for borehole telemetry apparatus
08/24/1982CA1130203A1 Hydraulic running tool for liner hangers
08/24/1982CA1130202A1 Safety valve
08/24/1982CA1130195A1 Combined piezo-meter and inclinometer casing
08/17/1982US4344651 Corrosive environment tension packer
08/11/1982EP0057531A2 Well packer
08/10/1982US4343370 Turbo-coring device equipped with a following pipe
08/10/1982CA1129338A1 Well safety system
08/05/1982WO1982002573A1 Methods and apparatus for well investigation and development
08/03/1982CA1128925A1 Variable angle bent sub for directional drilling
07/1982
07/28/1982EP0056506A1 Stabilizing tool for earth boring drill strings and method of using same
07/20/1982US4340116 Slip deployment mechanism
07/13/1982US4339000 Method and apparatus for a bridge plug anchor assembly for a subsurface well
07/06/1982USRE30988 Well tool
07/06/1982US4337969 Extension member for well-logging operations
06/1982
06/29/1982US4336843 Emergency well-control vessel
06/29/1982US4336841 Mechanical tubing anchor
06/24/1982WO1982002074A1 Device for pressing geophysical devices against the wall of a bore hole
06/08/1982US4333539 Method for extended straight line drilling from a curved borehole
06/08/1982US4333527 Side pocket mandrel and method of construction
06/08/1982CA1125005A1 Tfl caliper
06/02/1982EP0052672A1 Method for recovering a retrievable core receiver in upward drilling and a recovery head for this purpose
06/01/1982US4332410 Retrieving tool for well packer
06/01/1982US4332267 Ball valve assembly
05/1982
05/18/1982US4329916 Packer nose assembly
04/1982
04/20/1982US4325438 Lengthening drill string containing an instrument
04/20/1982US4325431 Flow controlling apparatus
04/14/1982EP0049668A2 Method and apparatus for conducting logging or perforating operations in a borehole
03/1982
03/30/1982US4321965 Self-aligning well tool guide
03/23/1982US4320579 Calipering tool
03/16/1982US4319639 Well safety system method
03/10/1982EP0046801A1 Packer arrangements for oil wells and the like.
03/02/1982US4317485 Pump catcher apparatus
02/1982
02/23/1982US4316386 Fluid pressure measuring apparatus for incorporation into a pipeline rising from a well
02/16/1982US4315544 Locking device for landing within a well conduit
02/16/1982CA1118339A1 Diverter tool
02/02/1982US4313498 Means for stabilizing equipment supported in an enclosure
02/02/1982US4313497 Pressure control valve
02/02/1982CA1117412A1 Well casing hanger assembly
01/1982
01/27/1982EP0044706A2 Method and apparatus for forming and using a bore hole
01/26/1982US4312406 Device and method for shifting a port collar sleeve
01/26/1982US4312405 Cementing procedure for casing
01/26/1982US4312378 Tool diverter
01/19/1982US4311196 Tangentially loaded slip assembly
01/19/1982US4311194 Liner hanger and running and setting tool
01/19/1982CA1116511A1 Fluid pressure set and released well packer apparatus
01/12/1982US4310051 Well safety valve apparatus
01/12/1982US4310048 Well safety system method and apparatus
12/1981
12/15/1981US4305465 Subsurface tubing hanger and stinger assembly
12/15/1981US4305462 Apparatus for positioning deflection wedges
12/08/1981US4304299 Method for setting and orienting a whipstock in a well conduit
11/1981
11/24/1981US4302018 Packer arrangements for oil wells and the like
11/24/1981CA1113081A1 Positioning deflection wedges
11/17/1981CA1112558A1 Measuring casing coupler apparatus
11/10/1981US4299281 Compensating bridge plug
11/03/1981US4298077 Circulation valve for in-hole motors
10/1981
10/27/1981US4296807 Crossover tool
10/27/1981CA1111344A1 Tool diverter
10/20/1981US4295796 Gas lift apparatus
10/20/1981US4295536 Pressure seal for pumping instruments through drill rod
10/20/1981US4295528 Selective lock with setting and retrieving tools
10/20/1981US4295523 Well safety system method and apparatus
10/13/1981US4294313 Kickover tool
1 ... 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128