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 33 - Sealing or packing boreholes or wells
Patents for E21B 33 - Sealing or packing boreholes or wells (33,564)
10/1982
10/26/1982CA1134260A1 Wellhead sidewall electrical penetrator
10/26/1982CA1134203A1 Down hole tool, including a screen assembly and a packer assembly
10/19/1982US4354554 Well safety valve
10/12/1982US4353560 Metal seal assembly with deformable sealing ring
10/12/1982US4353420 Wellhead apparatus and method of running same
10/12/1982CA1133389A1 Compensating bridge plug
10/12/1982CA1133387A1 Selective permeability reduction with polymerizable monomers around steam injection wells
10/12/1982CA1133385A1 Gravel pack tool
10/05/1982US4352394 Cable-suspended well pumping systems
10/05/1982CA1132900A1 Turning ring connector, particularly for a tube string used in offshore oil fied investigation of production
10/05/1982CA1132881A1 Check/relief valve for an inflatable packer system
10/05/1982CA1132783A1 Method of consolidating parts of permeable underground formation using dimethylaminomethylphenol
09/1982
09/29/1982EP0060840A1 Method and apparatus for running and cementing pipe
09/28/1982US4351090 Spring clip for wellhead slips
09/28/1982CA1132454A1 Inflatable packer assembly with control valve
09/22/1982EP0060549A1 Thread-type pipe connector
09/21/1982US4350346 Heat resistant seal
09/14/1982US4349205 Annulus sealing device with anti-extrusion rings
09/14/1982US4349204 Non-extruding inflatable packer assembly
09/14/1982US4349071 Cement retainer and setting tool assembly
09/14/1982US4349047 Flow plug
09/14/1982US4349041 Control valve system for blowout preventers
09/14/1982CA1131558A1 Seal system for wellhead isolation tool diffuser
09/08/1982EP0059376A1 Modular installation for subsea oil production
09/07/1982US4347900 Hydraulic connector apparatus and method
09/07/1982US4347898 Shear ram blowout preventer
09/07/1982US4347733 Blowout preventor test system
09/02/1982WO1982002923A1 Device for feeding and processing of pluging and cementing materials in a given section of bore hole
08/1982
08/31/1982US4346919 Remote automatic make-up stab-in sealing system
08/31/1982CA1130723A1 Manually operated blowout preventer and hydraulic operator therefor
08/24/1982US4345769 Drilling head assembly seal
08/24/1982US4345766 Apparatus for sealing an oil well pump polished rod
08/24/1982US4345735 Blowout preventer
08/24/1982US4345653 Packer deflate subassembly for an inflatable packer system
08/24/1982US4345651 Apparatus and method for the mechanical sequential release of cementing plugs
08/24/1982US4345649 Well packer
08/24/1982US4345648 Inflatable packer system
08/24/1982US4345647 Apparatus to increase oil well flow
08/24/1982CA1130197A1 Cementing tool with protective sleeve
08/17/1982US4344651 Corrosive environment tension packer
08/11/1982EP0057531A2 Well packer
08/10/1982US4343495 Conductor tieback connector
08/10/1982US4343477 Sealing device with thermal expansion pressure accumulator
08/03/1982US4342363 Geothermal well head
08/03/1982CA1128853A1 Wellhead flow control devices
07/1982
07/27/1982US4341264 Wellhead shearing apparatus
07/20/1982US4340259 Wear bushing
07/20/1982US4340117 Underwater well installations and handling string joint therefor
07/20/1982CA1127964A2 Vertically moored platform casing tieback
07/20/1982CA1127963A1 Vertically moored platform casing tieback
07/13/1982US4339107 Well blowout preventer packer assembly and packer modules therefor
07/13/1982US4339000 Method and apparatus for a bridge plug anchor assembly for a subsurface well
07/13/1982US4338999 Knockout pin trap
07/13/1982CA1127533A1 Cementing head apparatus and method of operation
07/13/1982CA1127419A1 Methods and apparatus for sensing wellhead pressure
07/06/1982US4337829 Control system for subsea well-heads
06/1982
06/29/1982CA1126650A1 Wedge-type retrievable inflation packer
06/22/1982US4335980 Hull heating system for an arctic offshore production structure
06/22/1982US4335904 Toggle mechanism connector
06/15/1982US4334584 Method and apparatus for installing a sea-floor cellar in a subsea bottom having compacted soil conditions
06/15/1982US4334582 Method of cementing from a floating vessel
06/15/1982US4334578 Well casing closure
06/15/1982US4334342 Casing hanger and stabilizer
06/09/1982EP0053117A1 Blender apparatus
06/08/1982US4333531 Method and apparatus for multiple well completion
06/08/1982US4333530 Method and apparatus for cementing a casing
06/08/1982US4333528 Seal assembly releasing tool
06/08/1982US4333526 Annulus valve
06/02/1982EP0052619A1 A method and apparatus for lining holes formed when drilling through earth layers
06/01/1982US4332367 Blowout preventer having a variable ram seal
06/01/1982US4332298 Valve assembly for an inflatable packer system
05/1982
05/25/1982US4331203 Method and apparatus for the installation and withdrawal of pumping equipment in an underwater well
05/25/1982CA1124172A1 Plunger lift system
05/18/1982US4330140 Marine riser connector
05/18/1982US4330039 Pressure actuated vent assembly for slanted wellbores
05/18/1982US4329916 Packer nose assembly
05/18/1982CA1123729A1 Subsea wellhead protective enclosure
05/11/1982US4328866 Check valve assembly
05/11/1982US4328826 Underwater fluid connector
05/04/1982US4327804 Geothermal well head assembly
05/04/1982CA1123075A1 Packoff leak detector
04/1982
04/29/1982WO1982001408A1 Hazardous materials control
04/29/1982WO1982001393A1 Mudline suspension system
04/27/1982US4326818 Techniques for the storage of water
04/27/1982US4326588 Well tool having knitted wire mesh seal means and method of use thereof
04/27/1982US4326587 Casing hanger and stabilizer apparatus and method
04/27/1982US4326586 Method for stressing thermal well casings
04/27/1982US4326584 Kelly packing and stripper seal protection element
04/27/1982US4326409 Situ bore hole test probe
04/27/1982US4326328 Method of releasably connecting a pair of pipes
04/20/1982US4325534 Manually operated blowout preventer and hydraulic operator therefor
04/20/1982US4325434 Tubing shut off valve
04/20/1982US4325409 Pilot valve for subsea test valve system for deep water
04/20/1982US4325404 Valve claw to be situated at the end of a pipe to mount a closing valve
04/15/1982WO1982001211A1 Method and apparatus for running and cementing pipe
04/13/1982US4324505 Subsea blowout containment method and apparatus
04/13/1982US4324438 Drilling deck bushing
04/13/1982US4324422 Low torque pack-off seal assembly with retrievable lower section
04/13/1982US4324407 Pressure actuated metal-to-metal seal
04/06/1982US4323256 Front packer seal for ram blowout preventer
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