| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 03/27/2013 | CN202832339U Novel wellhead controller |
| 03/27/2013 | CN202832338U Fracturing wellhead |
| 03/27/2013 | CN202832267U Environment-friendly self-sealing double-centering protection device |
| 03/27/2013 | CN202831883U Valve anti-theft lock |
| 03/27/2013 | CN202827276U Symmetrically arranged full automatic control intelligent double-machine double-pump well cementation semi-trailer |
| 03/27/2013 | CN103003524A Surface detection of failed open-hole packers using tubing with external tracer coatings |
| 03/27/2013 | CN103003519A Enhanced smear effect fracture plugging process for drilling systems |
| 03/27/2013 | CN103003518A Blowout preventer and launcher system |
| 03/27/2013 | CN102996795A Sealing structure for side door of blowout preventer |
| 03/27/2013 | CN102996159A Multiphase medium plugging device and method for gas extraction drill hole |
| 03/27/2013 | CN102996095A Well washing type step-by-step deblocking expanding long rubber barrel packer |
| 03/27/2013 | CN102996094A Polished rod sealer facilitating taking out sealing element for oil pumping well |
| 03/27/2013 | CN102996093A Oil well blowout-prevention environmentally-friendly device |
| 03/27/2013 | CN102996092A Hydraulic-control double-stage well test blowout preventer |
| 03/27/2013 | CN102996088A Collector provided with dynamic and static combination sealing structure |
| 03/27/2013 | CN102996073A Small module assembled offshore platform drilling machine |
| 03/27/2013 | CN101778994B Method of lining a well or a pipe using an inflatable bladder |
| 03/27/2013 | CN101592025B Inflatable anchoring packer |
| 03/27/2013 | CN101548063B Swellable packer construction |
| 03/26/2013 | US8404622 Lost circulation material for oilfield use |
| 03/26/2013 | US8403332 Seal member |
| 03/26/2013 | US8403331 Method and apparatus for injecting packing into stuffing boxes for reciprocating rods |
| 03/26/2013 | US8403290 Wiper seal assembly |
| 03/26/2013 | US8403078 Methods and apparatus for wellbore construction and completion |
| 03/26/2013 | US8403068 Indexing sleeve for single-trip, multi-stage fracing |
| 03/26/2013 | US8403056 Drill pipe running tool |
| 03/26/2013 | US8403053 Circuit functional test system and method |
| 03/26/2013 | US8403047 In-situ zonal isolation for sand controlled wells |
| 03/26/2013 | US8403046 Apparatus and method for providing an alternate flow path in isolation devices |
| 03/26/2013 | US8403045 Settable compositions comprising unexpanded perlite and methods of cementing in subterranean formations |
| 03/26/2013 | US8403039 Tool and method for providing access to a wellhead annulus |
| 03/26/2013 | US8403037 Dissolvable tool and method |
| 03/26/2013 | US8403036 Single piece packer extrusion limiter ring |
| 03/26/2013 | US8403035 Sealing and anchoring device for use in a well |
| 03/26/2013 | CA2791072A1 Configurable inserts for downhole plugs |
| 03/26/2013 | CA2700731C Fluid control apparatus and methods for production and injection wells |
| 03/26/2013 | CA2567092C Geosynthetic composite for borehole strengthening |
| 03/21/2013 | WO2013039774A1 Shaped memory polyphenylene sulfide (pps) for downhole packer applications |
| 03/21/2013 | WO2013039719A1 Temperature compensated accumulator |
| 03/21/2013 | WO2013037817A1 Annular barrier with axial force mechanism |
| 03/21/2013 | WO2013037816A1 Annular barrier with safety metal sleeve |
| 03/21/2013 | WO2013037049A1 Rotating flow control device for wellbore fluid control device |
| 03/21/2013 | WO2012178203A3 Expandable filtering system for single packer systems |
| 03/21/2013 | WO2012148640A3 Controlled production and injection |
| 03/21/2013 | WO2012136960A3 Drillable slip with non-continuous outer diameter |
| 03/21/2013 | WO2012120307A3 Pump system |
| 03/21/2013 | US20130073227 System and method for testing fluid seals for leaks |
| 03/21/2013 | US20130069315 Seal holder and method for sealing a bore |
| 03/21/2013 | US20130068484 Method and apparatus for wellbore fluid treatment |
| 03/21/2013 | US20130068463 Fluid Sample Cleanup |
| 03/21/2013 | US20130068461 Sealing body for well perforation operations |
| 03/21/2013 | US20130068453 Dual purpose observation and production well |
| 03/21/2013 | US20130068451 Tools and Methods for Use in Completion of a Wellbore |
| 03/21/2013 | US20130068450 Wicker profile for enhancing lockdown capacity of a wellhead annulus seal assembly |
| 03/21/2013 | US20130068448 Device for Carrying a Replacement Safety Valve in a Well Tube |
| 03/21/2013 | US20130068447 Wellhead isolation tool and wellhead assembly incorporating the same |
| 03/21/2013 | CA2856071A1 Rotating flow control device for wellbore fluid control device |
| 03/21/2013 | CA2848296A1 Shaped memory polyphenylene sulfide (pps) for downhole packer applications |
| 03/21/2013 | CA2848249A1 Methods and equipment to improve reliability of pinpoint stimulation operations |
| 03/21/2013 | CA2846794A1 Annular barrier with axial force mechanism |
| 03/21/2013 | CA2814336A1 Annular barrier with safety metal sleeve |
| 03/21/2013 | CA2752864A1 Sealing body for well perforation operations |
| 03/20/2013 | EP2570588A1 Annular barrier with axial force mechanism |
| 03/20/2013 | EP2570587A1 Annular barrier with safety metal sleeve |
| 03/20/2013 | EP2570586A1 Gravel Pack and Sand Disposal Device |
| 03/20/2013 | EP2570585A1 Subsea transformer |
| 03/20/2013 | EP2569508A2 Method and apparatus for dropping a pump down plug or ball |
| 03/20/2013 | EP2569507A2 Subterranean flow barriers containing tracers |
| 03/20/2013 | EP2569506A1 Method for combined cleaning and plugging in a well, a washing tool for directional washing in a well, and uses thereof |
| 03/20/2013 | EP2569505A1 Methods for high solid content fluids in oilfield applications |
| 03/20/2013 | CN202810816U Hydraulic releasing mechanism, hydraulic releasing packer and pump sealing integrated production string |
| 03/20/2013 | CN202810785U Novel well cementing back-pressure valve |
| 03/20/2013 | CN202810780U Gas sucking and exhausting hole sleeve with baseboard capable of being dismantled |
| 03/20/2013 | CN202810779U Self-grouting underground connecting joint |
| 03/20/2013 | CN202810778U Slip-type underground throttler |
| 03/20/2013 | CN202810777U Sand control well-flushing compression packer |
| 03/20/2013 | CN202810776U High pressure expanding type well-flushing packer |
| 03/20/2013 | CN202810775U Large-pressure-difference well-washing packer |
| 03/20/2013 | CN202810774U Bidirectional self-locking outer packer of casing |
| 03/20/2013 | CN202810773U Balanced stage-by-stage unpacking washable well packer |
| 03/20/2013 | CN202810772U Thermal recovery combined sealing device |
| 03/20/2013 | CN202810771U Mechanical compression type pipe-outside packer for multilateral well completion |
| 03/20/2013 | CN202810770U Metal rubber composite plastic tube of bailing oil production puller |
| 03/20/2013 | CN202810769U Outer chip-proof device for self-expansion type branch well |
| 03/20/2013 | CN202810768U Main shaft inside scrap-prevention device for multilateral well |
| 03/20/2013 | CN202810767U Layering release combination packer device |
| 03/20/2013 | CN202810766U Hole packer |
| 03/20/2013 | CN202810765U Pressure lowering device |
| 03/20/2013 | CN202810764U Multifunctional stuffing box |
| 03/20/2013 | CN202810763U High-temperature-resistant pre-stress casing head |
| 03/20/2013 | CN202810762U High temperature and high pressure automatic deviation regulation sealed well mouth protector |
| 03/20/2013 | CN202810761U Christmas tree water pressure monitoring system |
| 03/20/2013 | CN202810760U Electric submersible pump wellhead high-pressure sealing device |
| 03/20/2013 | CN202810759U Wellhead rob sprayblowout wrecking device for lifting and descending sucker rod |
| 03/20/2013 | CN202810758U Standard wellhead flow path device for rod-pumped well |
| 03/20/2013 | CN202810757U Standard wellhead flow path device for heavy oil thermal recovery rod-pumped well |
| 03/20/2013 | CN202810756U Standard wellhead flow path device for ground drive screw pump well |
| 03/20/2013 | CN202810755U Flowing well standard wellhead flow device |
| 03/20/2013 | CN202810754U Standard wellhead flow path device for electric submersible centrifugal pump well |
| 03/20/2013 | CN202810753U Sealer of oil well paraffin removal hollow rod |