| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 02/28/2002 | US20020023532 System for remote control and operation |
| 02/27/2002 | EP1182422A1 Position measurement with spring and force measurement for actuators, BOP, valves |
| 02/27/2002 | EP1042583B1 Apparatus and method for injecting treatment fluids into an underground formation |
| 02/27/2002 | CN2479192Y Annular bottom pressure equipment for well cementation |
| 02/27/2002 | CN2479191Y Downhole tool for driving cement plug |
| 02/27/2002 | CN2479190Y Oil wall circulating gravel packing and sand control tool |
| 02/27/2002 | CN2479189Y Downhole choke |
| 02/27/2002 | CN2479188Y Packer |
| 02/27/2002 | CN1079888C Method and system for monitoring characteristic of earth formation in well |
| 02/27/2002 | CN1079886C Inflatable tubular sleeve for tubing or obturating well or pipe |
| 02/26/2002 | US6349772 Apparatus and method for hydraulically actuating a downhole device from a remote location |
| 02/26/2002 | US6349770 Telescoping tool |
| 02/26/2002 | US6349766 Chemical actuation of downhole tools |
| 02/26/2002 | US6349765 Water pressure system |
| 02/26/2002 | US6349764 Drilling rig, pipe and support apparatus |
| 02/26/2002 | CA2023451C Wellhead assembly |
| 02/21/2002 | WO2002014651A1 Subsea intervention system |
| 02/21/2002 | WO2001073325A3 Gate valve |
| 02/21/2002 | US20020020560 Wireline system for multiple direct push tool usage |
| 02/21/2002 | US20020020531 Method and apparatus for cementing branch wells from a parent well |
| 02/21/2002 | US20020020525 Intelligent thru tubing bridge plug with downhole instrumentation |
| 02/21/2002 | US20020020524 Expandable liner and associated methods of regulating fluid flow in a well |
| 02/21/2002 | DE10039484A1 Sealing bore-accessed strata cavities mixes fast-setting materials pumped out from a packed-off string to seal cavity downhole. |
| 02/20/2002 | CN2477818Y Hydraulic slips oil extracting packer |
| 02/20/2002 | CN2477817Y Double-J slips oil extracting packer |
| 02/20/2002 | CN2477816Y Hydraulic packer |
| 02/20/2002 | CN2477815Y Light wellhead blowout preventer |
| 02/20/2002 | CN2477814Y Wellhead oil economizing box |
| 02/20/2002 | CN1079484C Section regulation process for water injection well |
| 02/14/2002 | WO2001066275A3 Composite particles and methods of their use |
| 02/13/2002 | EP1179116A1 Recovery of production fluids from an oil or gas well |
| 02/13/2002 | CN2476639Y Upper sealant packing box |
| 02/13/2002 | CN2476638Y Magneto-ignition apparatus |
| 02/13/2002 | CN1335348A Oil and water well plugging agent and its producing process |
| 02/12/2002 | US6345668 Tubing hanger having an integral valve gate |
| 02/12/2002 | CA2280581C Composite pumping tree with integral shut-off valve |
| 02/12/2002 | CA2172081C Process and plug for well abandonment |
| 02/07/2002 | WO2002010551A1 Liner hanger with slip joint sealing members and method of use |
| 02/07/2002 | US20020014339 Apparatus and method for packing or anchoring an inner tubular within a casing |
| 02/06/2002 | CN2475826Y Polish rod sealing device for oil pumping well head |
| 02/06/2002 | CN2475825Y Packing box snap-lock |
| 02/05/2002 | USRE37538 Ram type blowout preventer |
| 02/05/2002 | US6343791 Split mesh end ring |
| 02/05/2002 | US6343655 Method of setting up a production installation |
| 02/05/2002 | US6343654 Electric power pack for subsea wellhead hydraulic tools |
| 02/05/2002 | US6343651 Apparatus and method for controlling fluid flow with sand control |
| 02/05/2002 | US6343650 Test, drill and pull system and method of testing and drilling a well |
| 02/05/2002 | US6343649 Methods and associated apparatus for downhole data retrieval, monitoring and tool actuation |
| 02/05/2002 | CA2092647C Tubing anchor catcher with rotating mandrel |
| 01/31/2002 | WO2002009130A1 Arrangement and method for installing a subsea transformer |
| 01/31/2002 | WO2002008569A1 Resettable downhole packer |
| 01/31/2002 | WO2001040614A3 Ceramic components for high pressure oil wells |
| 01/31/2002 | US20020011580 Electric actuator |
| 01/31/2002 | US20020011341 Pack-off system |
| 01/31/2002 | US20020011339 Through-tubing multilateral system |
| 01/31/2002 | US20020011336 Crossover tree system |
| 01/31/2002 | US20020011333 Subsurface measurement apparatus, system, and process for improved well drilling, control, and production |
| 01/31/2002 | CA2412412A1 Resettable downhole packer |
| 01/30/2002 | EP1175550A1 Inflatable packer setting tool assembly |
| 01/30/2002 | EP1175549A1 Rotating blowout preventer |
| 01/30/2002 | EP0968354B1 Wellhead device for retaining the solid particles carried by the production fluid |
| 01/30/2002 | CN2474714Y Pin break type packer |
| 01/30/2002 | CN2474713Y Circulating type anti jamming packer |
| 01/30/2002 | CN1333414A Paking replacing device for oil well |
| 01/29/2002 | US6342467 Method and composition for controlling fluid loss in high permeability hydrocarbon bearing formations |
| 01/29/2002 | US6341654 Inflatable packer setting tool assembly |
| 01/29/2002 | US6341653 Junk basket and method of use |
| 01/29/2002 | US6341652 Backflow prevention device |
| 01/29/2002 | CA2156982C Torque-resistant, seal setting force-limited, hydraulically settable well packer structure and associated methods |
| 01/24/2002 | WO2002006629A1 Method for treating multiple wellbore intervals |
| 01/24/2002 | US20020007949 Method for treating multiple wellbore intervals |
| 01/24/2002 | US20020007946 Hydraulic well control system |
| 01/23/2002 | EP1173655A1 Ribbed sealing element and method of use |
| 01/23/2002 | CN2473329Y Water well packer |
| 01/23/2002 | CN2473328Y Packing lubricator |
| 01/23/2002 | CN1332310A Water blocking method adopting oil-water separating agent for oil well with high water content |
| 01/17/2002 | WO2002004785A1 Well management system |
| 01/17/2002 | WO2002004783A1 Deformable member |
| 01/17/2002 | US20020005287 Hydraulic cements; compressive strength |
| 01/16/2002 | EP1172521A2 Downhole packer with caged ball valve |
| 01/16/2002 | EP1172520A2 Barrel slip and retrievable packer therewith |
| 01/16/2002 | EP1172519A2 Improved ram bore profile for variable bore packer ram in a ram type blowout preventer |
| 01/16/2002 | EP1171684A1 Downhole device for controlling fluid flow in a well |
| 01/16/2002 | CN2471923Y Chemical sand preventing tool |
| 01/16/2002 | CN2471922Y Light sand washover self sealed oil wiper |
| 01/15/2002 | CA2228157C Self-aligning stuffing box for pumpjack units |
| 01/15/2002 | CA2190929C Linear indexing apparatus and methods of using same |
| 01/15/2002 | CA2142375C Cement head quick connector |
| 01/15/2002 | CA2036660C Cement accelerator |
| 01/11/2002 | CA2352733A1 High temperature high pressure retrievable packer with barrel slip |
| 01/10/2002 | WO2002002906A2 Drillable bridge plug |
| 01/10/2002 | WO2002002905A1 Packer and method for fixation thereof in a well |
| 01/10/2002 | WO2001038691A3 Device for injecting a fluid into a formation |
| 01/10/2002 | DE10128837A1 Dichtungshalter für hydraulische Unterwasserkupplung Seal holder for undersea hydraulic coupling |
| 01/10/2002 | CA2383978A1 Packer and method for fixation thereof in a well |
| 01/09/2002 | EP1169548A1 Method for annular sealing |
| 01/09/2002 | EP1169547A1 Method of creating a wellbore in an underground formation |
| 01/09/2002 | EP1169546A1 Multi-stage pressure maintenance device for subterranean well tool |
| 01/09/2002 | EP1169545A1 Downhole tool with thermal compensation |
| 01/09/2002 | EP1169544A2 Method of manufacturing a wall thickness program into an elastomeric tubular component for incorporation into a packing device for use in a subterranean well |