E21B 33 - Sealing or packing boreholes or wells

Patents for E21B 33 - Sealing or packing boreholes or wells (33,564)
11/2011
11/09/2011	CN202031535U Retrievable ash squeezing tool
11/09/2011	CN202031534U Downhole rotational-flow shearing generator
11/09/2011	CN202031533U Shunting-type grouting plugging device for gas extraction center
11/09/2011	CN202031532U Bridge plug feeder
11/09/2011	CN202031531U Self-locking type rubber plug and double-sealed self-filling type float collar applying same
11/09/2011	CN202031530U Compressed washable well packer
11/09/2011	CN202031529U Static-pressure submerged blanking plug
11/09/2011	CN202031528U Step-by-step releasable packer
11/09/2011	CN202031527U Pressing crack packer of barefoot well
11/09/2011	CN202031526U Open hole well packer
11/09/2011	CN202031525U Hydraulic pressure delivery device of horizontal well
11/09/2011	CN202031524U Self-sealing head
11/09/2011	CN202031523U Gate rubber core
11/09/2011	CN202031522U Multipurpose small-sized rotary blowout preventer
11/09/2011	CN202031521U Wellhead tieback connector
11/09/2011	CN202031520U Joint device for underwater dry-type Christmas tree sealed cabin
11/09/2011	CN202031519U Wellhead source loading cover plate for oilfield well logging
11/09/2011	CN202031518U Wellhead polished rod sealing ring of rod pumping unit
11/09/2011	CN202031517U Novel sealing packing of polish rod of pumping well
11/09/2011	CN202031516U Conveniently detachable type pumping-well polished rod seal
11/09/2011	CN102239308A Two-stage submersible actuators
11/09/2011	CN102235158A Underground annular blowout preventer and assembly process thereof
11/09/2011	CN102234999A Underwater drilling platform
11/08/2011	US8053395 base fluid and a cationic polyorganosiloxane, comprises at least two cationic quaternary ammonium groups; prevents water blocks
11/08/2011	US8053394 Drilling fluids with redispersible polymer powders
11/08/2011	US8051914 Well packing
11/08/2011	US8051913 Downhole gap sealing element and method
11/03/2011	WO2011135021A2 Electronic combined load weak link
11/03/2011	WO2011134637A1 Stuffing box for a fluid production well, and associated surface assembly
11/03/2011	WO2009152918A3 Actively energized dynamic seal system
11/03/2011	US20110266752 Seal having stress control groove
11/03/2011	US20110266006 Hydraulic surface connector
11/03/2011	US20110266004 Annular barrier and annular barrier system
11/03/2011	US20110266002 Subsea Control Module with Removable Section
11/03/2011	US20110265996 Radiation-Induced Thickening for Set-On-Command Sealant Compositions and Methods of Use
11/03/2011	US20110265986 Multiple layer extrusion limiter
11/03/2011	CA2738304A1 Compositions and methods for well cementing
11/02/2011	EP2383429A2 Subsea control module with removable section having a flat connecting face
11/02/2011	EP2383428A2 Subsea control module with removable section and method
11/02/2011	EP2383427A2 Subsea control module with removable section
11/02/2011	EP2383426A2 Well production shut down
11/02/2011	EP2383425A2 Choke assembly
11/02/2011	EP2383424A2 Choke assembly
11/02/2011	EP2383423A2 Choke assembly
11/02/2011	EP1565644B1 Well treating process
11/02/2011	CN202023532U Hole packer for reinforcing for grouting in coal mine
11/02/2011	CN202023531U Large-size float shoe used for expandable casing pipe with constant well-diameter
11/02/2011	CN202023530U Rapid hole packer in coal-mine gas extraction and gradual expansion
11/02/2011	CN202023529U Friction type multifunctional hole packer for drawing out methane or injecting water
11/02/2011	CN202023528U Anti-channeling sealing device for side-drilling well window
11/02/2011	CN202023527U Blowout preventer
11/02/2011	CN202023526U Testing anti-spraying pipe for oil-water well
11/02/2011	CN202023525U Passing-through device for electric heating strip in well
11/02/2011	CN202023524U Novel well-opening burglarproof pipe plug
11/02/2011	CN202023523U Operation-under-pressure device for two-stage elevating oil-water well
11/02/2011	CN102232139A Wellhead valve system for adjusting the flow with integrated multiphase flow rate measuring ability
11/02/2011	CN102230375A Method and device for monitoring coal bed gas parameter in real time
11/02/2011	CN102230367A Wellhead-through extending seal assembly for Christmas tree
11/01/2011	USRE42877 Methods and apparatus for wellbore construction and completion
11/01/2011	US8047298 Well tools utilizing swellable materials activated on demand
11/01/2011	US8047290 Double swivel apparatus and method
11/01/2011	US8047282 Methods of sonically activating cement compositions
11/01/2011	US8047280 Drillable bridge plug
11/01/2011	US8047279 Slip segments for downhole tool
11/01/2011	CA2693676C Downhole tool assembly with debris relief, and method for using same
11/01/2011	CA2662406C Packer element retaining system
11/01/2011	CA2598587C Centralization and running tool and method
11/01/2011	CA2564598C Plug setting and retrieving apparatus
10/2011
10/29/2011	CA2738354A1 Mechanism for sealing pfa seal bags
10/27/2011	WO2011133369A1 Apparatus and method for sealing portions of a wellbore
10/27/2011	WO2011133319A2 Prevention, actuation and control of deployment of memory-shape polymer foam-based expandables
10/27/2011	WO2011133185A1 Unitized bi-directional seal assembly
10/27/2011	WO2011133096A1 Device for sealing a rock wall
10/27/2011	WO2011131504A1 Method and device for sealing a well by means of a core plug, plug for implementing the method, and extractor tool designed to remove it
10/27/2011	WO2011131307A1 System and method for improving zonal isolation in a well
10/27/2011	WO2011106366A3 Apparatus and method for cementing liner
10/27/2011	WO2011087715A3 Controllable chemical injection for multiple zone completions
10/27/2011	WO2011072803A3 Equipment for remote launching of cementing plugs
10/27/2011	US20110260451 Barrier Seal and Assembly Incorporating Same
10/27/2011	US20110259612 Wellbore pressure control with segregated fluid columns
10/27/2011	US20110259611 Mechanically deployable well isolation mechanism
10/27/2011	US20110259610 High pressure and high temperature ball seat
10/27/2011	US20110259603 Method and apparatus for sealing an annulus of a wellbore
10/27/2011	US20110259602 Christmas tree installation using coiled tubing injector
10/27/2011	US20110259597 Wellhead having an integrated safety valve and method of making same
10/27/2011	US20110259587 Apparatus and method for sealing portions of a wellbore
10/27/2011	US20110259579 Sealing Feed Through Lines for Downhole Swelling Packers
10/27/2011	US20110259578 Swellable downhole packer
10/26/2011	EP2381065A1 System and method for improving zonal isolation in a well
10/26/2011	EP2379838A1 Method for blocking a storage well
10/26/2011	CN202017480U Pipe tripping comprehensive monitor operating system
10/26/2011	CN202017475U Closed type cut-off device
10/26/2011	CN202017473U Progressively unsealed environment-friendly well flushing packer
10/26/2011	CN202017472U Gas drainage hole packer with pressure gauge
10/26/2011	CN202017471U Split assembly welded casing head
10/26/2011	CN202017470U Auxiliary sealing device for rod sealing unit
10/26/2011	CN102227542A Sub-sea chemical injection metering valve
10/26/2011	CN102226385A Pressure generator of electric cable bridge plug of oil pipe
10/26/2011	CN102226384A Subsea blowout preventer stack and control system thereof
10/26/2011	CN102226383A Electric and hydraulic control system of blowout preventer

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