| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 05/07/2008 | CN201057012Y Compact wellhead device |
| 05/07/2008 | CN201057011Y Belt type packing kit |
| 05/07/2008 | CN201057010Y Polished rod sealing device of fixed tubular pile thermal wellhead |
| 05/07/2008 | CN201057009Y Pumping wellhead polish rod packer |
| 05/07/2008 | CN201057008Y Self-tightening deflection-regulating type polished rod sealer |
| 05/07/2008 | CN201056986Y Non-decompressing workover rig for water injection well |
| 05/07/2008 | CN101173601A Rotatable hydraulic expanding type tail pipe hanger |
| 05/07/2008 | CA2608674A1 Decoupled shaft seal for a progressive cavity pump stuffing box |
| 05/06/2008 | US7367410 Method and device for liner system |
| 05/06/2008 | US7367404 Tubing seal |
| 05/06/2008 | US7367401 Ported velocity tube for gas lift operations |
| 05/06/2008 | US7367393 Pressure monitoring of control lines for tool position feedback |
| 05/06/2008 | CA2475360C Liner top test packer |
| 05/06/2008 | CA2460219C Packer with integral cleaning device |
| 05/02/2008 | WO2008051825A1 Wax barrier for use with in situ processes for treating formations |
| 05/02/2008 | WO2008051788A1 Downhole wet connect using piezoelectric contacts |
| 05/02/2008 | WO2008050127A1 Electrical connector with pressure seal |
| 05/02/2008 | WO2008050103A1 Apparatus and method for injecting fluids in a subterranean location |
| 05/02/2008 | WO2008049835A1 System for determining sealing in a wellbore |
| 05/02/2008 | WO2008007252A3 Integrated pump assembly for well completion |
| 05/02/2008 | CA2667461A1 System for determining sealing in a wellbore |
| 05/02/2008 | CA2667282A1 Electrical connector with pressure seal |
| 05/01/2008 | US20080101872 System, method, and apparatus for independent retention of a locking device on mooring connections |
| 05/01/2008 | US20080099701 Fluid Saving Blowout Preventer Operator System |
| 05/01/2008 | US20080099209 System and Method for Protecting Downhole Components During Deployment and Wellbore Conditioning |
| 05/01/2008 | US20080099203 Self-sealing well cement composition |
| 05/01/2008 | US20080099202 Cementing an oil well with a silicate-forming (sodium silicate) gel solution and an acid-soluble cement separated by a polymeric (guar) spacer which permits solubilization and removal of the cement by HCl in the event of a fracture in subterranean formation and the need for water and/or gas shutoff |
| 05/01/2008 | US20080099201 Contaminant excluding junction and method |
| 05/01/2008 | US20080099200 Expandable fluid cement sand control |
| 05/01/2008 | US20080099195 Method and apparatus for isolating and testing zones during reverse circulation drilling |
| 04/30/2008 | EP1915507A1 Device for conducting cementing operations and inflow regulation |
| 04/30/2008 | CN201053315Y Double hole spraying-proof plug |
| 04/30/2008 | CN201053300Y Throttle kill manifold |
| 04/30/2008 | CN201053299Y Portable self-sealing well sealing equipment |
| 04/30/2008 | CN101171400A Improved inflatable packers |
| 04/30/2008 | CN101171399A Packer-anchoring device |
| 04/29/2008 | US7364051 Remote actuator for ball injector |
| 04/29/2008 | US7363986 Annular isolators for expandable tubulars in wellbores |
| 04/29/2008 | US7363982 Subsea well production flow system |
| 04/29/2008 | US7363978 introducing a mixture of fluids and surfactants into subterranean formation, to consolidate proppant particles; surface treatment |
| 04/29/2008 | US7363977 cementing subterranean formations comprising mixing brines, hydraulic cements, a butadiene-styrene copolymer latex and latex stabilizer agents comprising anionic surfactants, then introducing the mixture into an annulus between the subterranean formation and pipes, and allowing to set; well completion |
| 04/29/2008 | US7363976 Well remediation using downhole slurry |
| 04/29/2008 | US7363975 Push/pull belleville stack for use with zertech MTM seal |
| 04/29/2008 | US7363970 Expandable packer |
| 04/29/2008 | CA2537502C Separable plug for use in a wellbore |
| 04/29/2008 | CA2524605C Inflatable packer assembly |
| 04/29/2008 | CA2498987C Drillable bridge plug |
| 04/29/2008 | CA2408898C Well reference apparatus and method |
| 04/24/2008 | WO2008048109A1 Subsea accumulator monitoring system |
| 04/24/2008 | WO2008024265A3 Dual-cylinder blowout preventer operator system |
| 04/24/2008 | WO2008024257A3 Blowout preventer operator locking system |
| 04/24/2008 | WO2007079321A3 Apparatus for radially expanding and plastically deforming a tubular member |
| 04/24/2008 | US20080093124 Apparatus and methods for drilling a wellbore using casing |
| 04/24/2008 | US20080093086 Swellable packer construction for continuous or segmented tubing |
| 04/24/2008 | US20080093067 Wellhead isolation tool and method of fracturing a well |
| 04/24/2008 | CA2666610A1 Mux bop database mirroring |
| 04/23/2008 | EP1914380A1 Expandable wellbore junction |
| 04/23/2008 | EP1913232A2 Triple valve blow out preventer |
| 04/23/2008 | EP1700000B1 Underbalanced well drilling and production |
| 04/23/2008 | CN201050382Y Portable friction type hole packer for water injection gas suction |
| 04/23/2008 | CN201050381Y Spurting-proof device for safe tunneling of protrusive coal bed |
| 04/23/2008 | CN201050361Y Well mouth oil pipe pressure tester |
| 04/23/2008 | CN201050341Y Double safety casing inclined guiding check valve |
| 04/23/2008 | CN201050336Y Down-hole cement plugging device |
| 04/23/2008 | CN201050335Y Self-locking rubber plug combination for well cementing and completion |
| 04/23/2008 | CN201050334Y Oil well cement coagulation formwork |
| 04/23/2008 | CN201050333Y Adjustable cement head stop pin for sealing and cementing |
| 04/23/2008 | CN201050332Y Cement injection switch device for drillable segmental cementing |
| 04/23/2008 | CN201050331Y Automatic closing cementing device |
| 04/23/2008 | CN201050330Y Releasing packer for pump recovery well snubbing environment-friendly operation |
| 04/23/2008 | CN201050329Y Well mouth pressure testing packer |
| 04/23/2008 | CN201050328Y Multipurpose packer for water plugging and pressure testing |
| 04/23/2008 | CN201050327Y Expansion type casing high pressure plugging device |
| 04/23/2008 | CN201050326Y Rotary type oil pipe high pressure plugging device |
| 04/23/2008 | CN201050325Y Fifth level branch hole completion double-pipe packer |
| 04/23/2008 | CN201050324Y Seal unit possessing disk spring |
| 04/23/2008 | CN201050323Y Spring type spiral pumping rod pack |
| 04/23/2008 | CN201050322Y Pumping unit mine mouth sealer |
| 04/23/2008 | CN201050321Y Thick oil thermal production well stuck-releasing matching tool |
| 04/23/2008 | CN201050320Y Mine mouth suspension type high pressure plugging device |
| 04/23/2008 | CN101165311A Large orifice releasing packer |
| 04/23/2008 | CN101165310A One-way slip hydraulic base sealed packer |
| 04/23/2008 | CN101165309A Compression type packer |
| 04/23/2008 | CN101165308A Forced slip shrinkage packer |
| 04/23/2008 | CN101165307A Highly sealed compression packer |
| 04/22/2008 | US7360601 Submersible well pump installation procedure |
| 04/22/2008 | US7360598 comprises grafted monomers selected from the group consisting of 2-acrylamido-2-methylpropanesulfonic acid, acrylamide, acrylic acid, vinylphosphonic acid, diallyldimethylammonium chloride and salts; set in the space between the pipe string and the subterranean formation |
| 04/22/2008 | US7360590 Energized thermoplastic sealing element and method of use |
| 04/22/2008 | CA2524666C Wellbores utilizing fiber optic-based sensors and operating devices |
| 04/22/2008 | CA2298139C Wellhead |
| 04/22/2008 | CA2288381C Open hole zonal isolation and control |
| 04/18/2008 | CA2607043A1 Seal assembly energized with floating pistons |
| 04/18/2008 | CA2568105A1 Pressure activated annular seal assembly |
| 04/17/2008 | WO2008045873A1 Downhole tool having a seal ring with reinforcing element |
| 04/17/2008 | WO2008044157A2 Oilfield material delivery mechanism |
| 04/17/2008 | WO2008021328A3 Position indicator for a blowout preventer |
| 04/17/2008 | US20080087441 Swelling Layer Inflatable |
| 04/17/2008 | US20080087438 Self-propelled swabbing device and method |
| 04/17/2008 | US20080087436 Subsea rov retrievable tree cap |
| 04/17/2008 | US20080087431 Apparatus and Method for Controlled Deployment of Shape-Conforming Materials |