| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
|---|
| 12/11/2013 | CN103437736A Rapidly-assembled type grouting and hole sealing device |
| 12/11/2013 | CN103437735A Underground variable-diameter limiting body blocking and isolating device in casing |
| 12/11/2013 | CN103437734A Packer structure |
| 12/11/2013 | CN103437733A Well-mouth polished-rod centralizing sealer |
| 12/11/2013 | CN103437731A Transporting and mounting device for blowout preventer stack in drilling operation |
| 12/11/2013 | CN103436244A Composite unblocking agent and method for composite unblocking by using temporary blocking agent and composite unblocking agent |
| 12/11/2013 | CN102562133B Device and method for sealing and drilling holes of gas drainage |
| 12/11/2013 | CN102409996B Automatic blowout prevention system for oil-field workover rig |
| 12/11/2013 | CN102134978B Drill hole wall protecting and leakage plugging method or slope guide deviation drilling method and used device thereof |
| 12/10/2013 | US8602116 Sequenced packing element system |
| 12/10/2013 | US8602106 Downhole fluid flow control system and method having direction dependent flow resistance |
| 12/10/2013 | US8602099 Process for the production of mineral oil |
| 12/10/2013 | CA2760383C Blowout preventer having ram block with oculus |
| 12/10/2013 | CA2740567C Downhole pump apparatus having decoupleable isolation plug |
| 12/10/2013 | CA2739423C Shunt tube flowpaths extending through swellable packers |
| 12/10/2013 | CA2562819C Methods and systems for delivering lost circulation material into drilling pits |
| 12/05/2013 | WO2013181413A1 Fluid displacement tool and method |
| 12/05/2013 | WO2013181259A1 Gravel packing method for multilateral well prior to locating a junction |
| 12/05/2013 | WO2013180706A1 Auto-filling of a tubular string in a subterranean well |
| 12/05/2013 | WO2013178579A1 Determining a position of a hydraulic subsea actuator |
| 12/05/2013 | WO2013178295A1 Apparatus and method for controlling pressure in a borehole |
| 12/05/2013 | WO2013014440A3 Landing string |
| 12/05/2013 | WO2013014439A3 Ball valve |
| 12/05/2013 | US20130324443 Salt-tolerant, thermally-stable rheology modifiers |
| 12/05/2013 | US20130320626 Pack off device with cable feedthrough |
| 12/05/2013 | US20130319682 Well completion using a pumpable seat assembly |
| 12/05/2013 | US20130319677 Well completion |
| 12/05/2013 | US20130319676 Wellbore fluid treatment process and installation |
| 12/05/2013 | US20130319673 Cement Compositions Comprising Saponins and Associated Methods |
| 12/05/2013 | US20130319672 Methods of Using Wellbore Servicing Compositions |
| 12/05/2013 | US20130319671 Method and Device for Plugging of a Subsea Well |
| 12/05/2013 | US20130319668 Pumpable seat assembly and use for well completion |
| 12/05/2013 | US20130319665 Magnetic Leak Management Apparatus And Methods |
| 12/05/2013 | US20130319658 Wellbore isolation while placing valves on production |
| 12/05/2013 | US20130319654 Plugging device |
| 12/05/2013 | CA2875125A1 Apparatus and method for controlling pressure in a borehole |
| 12/04/2013 | EP2669465A2 Apparatus and methods of flow testing formation zones |
| 12/04/2013 | EP2668403A1 Device for transferring a hydraulic working pressure in a pressure fluid for actuating hydraulic units of deep-sea systems |
| 12/04/2013 | EP2668367A2 Monitoring the health of a blowout preventer |
| 12/04/2013 | EP2668366A2 Setting tool |
| 12/04/2013 | CN203321452U Leakage isolation, blockage removal and production integrated string for oil and water wells of oilfields |
| 12/04/2013 | CN203321431U High-pressure swing jet grouting ballast blowing device for cold condition of plateau |
| 12/04/2013 | CN203321430U Fast mortar injection pipe column |
| 12/04/2013 | CN203321429U Metal seal grading cement injector |
| 12/04/2013 | CN203321428U Controlling and plugging tool assembly applied to drilling engineering |
| 12/04/2013 | CN203321427U Selective cementing unit for horizontal well |
| 12/04/2013 | CN203321426U Downward strike type stuck freeing packer |
| 12/04/2013 | CN203321425U Retractile packer capable of unpacking step by step |
| 12/04/2013 | CN203321424U Backwashing well water injection packer |
| 12/04/2013 | CN203321423U Self-expanding packer |
| 12/04/2013 | CN203321422U Floatable packer rubber sleeve seat sealing device |
| 12/04/2013 | CN203321421U Self-expandable packer with improved seal ability |
| 12/04/2013 | CN203321420U Self-expandable packer with improved seal ability |
| 12/04/2013 | CN203321419U Multi-rubber tube packer |
| 12/04/2013 | CN203321418U Near-bit downhole blowout preventer |
| 12/04/2013 | CN203321417U Slip-free facture packer for oil and gas fields |
| 12/04/2013 | CN203321416U Simple capping tool in pipe |
| 12/04/2013 | CN203321415U Balance packer for fracturing gas well |
| 12/04/2013 | CN203321414U Polyurethane hole packer |
| 12/04/2013 | CN203321413U Self-lubricating corrosion and blowout preventing device for water injection well measuring and adjusting |
| 12/04/2013 | CN203321412U Fast-assembly sucker rod blowout preventer |
| 12/04/2013 | CN203321411U Blowout preventer device for dual tube well to convert into single tube well |
| 12/04/2013 | CN203321410U Novel two-position control simple casing head |
| 12/04/2013 | CN203321409U Christmas tree connector |
| 12/04/2013 | CN203321408U Underwater vertical type Christmas tree |
| 12/04/2013 | CN203321407U Christmas tree cap |
| 12/04/2013 | CN203321406U Automatic lubricating device for packing of pumping unit well mouth |
| 12/04/2013 | CN203321405U Sucker rod blowout preventer |
| 12/04/2013 | CN203321404U Anti-theft oil nozzle pipe plug for offshore single well |
| 12/04/2013 | CN203321403U Novel screw pump packing box press cap |
| 12/04/2013 | CN203321402U Anti-falling protective fastener of polished rod sealer |
| 12/04/2013 | CN203321401U Wellhead drainage control device |
| 12/04/2013 | CN203321400U Self-lubricating packing box device of oil well |
| 12/04/2013 | CN203321382U Backwashing sealing device |
| 12/04/2013 | CN203321365U Controllable sucker rod tripping device |
| 12/04/2013 | CN103429911A Subsea actuation system |
| 12/04/2013 | CN103429841A Sealing assembly |
| 12/04/2013 | CN103429840A Pre-tensioned connector |
| 12/04/2013 | CN103422839A Step-difference-free closable water nozzle plug |
| 12/04/2013 | CN103422835A Solidifiable flow sand bridge plugging method for shaft of oil and gas well |
| 12/04/2013 | CN103422834A Oil well blocking agent and application thereof |
| 12/04/2013 | CN103422833A Coal mine drilling blowout preventer |
| 12/04/2013 | CN103422832A Tree cap wedge seal system and method to operate the same |
| 12/04/2013 | CN103422831A Positive retention lock ring for tubing hanger |
| 12/04/2013 | CN103422830A Circulation killing sleeve perforator |
| 12/04/2013 | CN103422829A Electric pump wellhead blowout control and leakage stopping device |
| 12/04/2013 | CN103422825A Well cementation frequency controllable vibrator and use method thereof |
| 12/04/2013 | CN103421475A Oil well deep composite blocking profile control agent and application thereof |
| 12/04/2013 | CN103421160A Polyurethane grouting composition |
| 12/04/2013 | CN102434122B Anti-theft wellhead assembly |
| 12/04/2013 | CN102418494B Heat-sensitive umbrella type folded multilayer packer |
| 12/04/2013 | CN102278087B Wellhead butt joint device used for continuous pipeline test |
| 12/04/2013 | CN102182420B Perfusion packer |
| 12/04/2013 | CN102108845B Rotary blowout preventer |
| 12/04/2013 | CN102105649B Apparatus for improving well safety and recovery and installation process thereof |
| 12/03/2013 | US8598091 Use of seeds as a cement set retarder |
| 12/03/2013 | US8596370 Annular seal for expanded pipe with one way flow feature |
| 12/03/2013 | US8596369 Extending lines through, and preventing extrusion of, seal elements of packer assemblies |
| 12/03/2013 | US8596363 Oil and gas well cement systems using elemental sulfur |
| 12/03/2013 | US8596362 Hydraulic fracturing methods and well casing plugs |