| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 01/29/2003 | CN2533256Y Suspended packer |
| 01/29/2003 | CN2533255Y Mechanical polish rod sealing device for oil production wellhead |
| 01/29/2003 | CN2533254Y Theftproof box for wellhead |
| 01/29/2003 | CN1393634A Adjustable sand blasting technique for repairing hole and its system apparatus |
| 01/28/2003 | US6510900 Seal assembly for dual string coil tubing injection and method of use |
| 01/28/2003 | US6510897 Rotational mounts for blowout preventer bonnets |
| 01/28/2003 | US6510895 Energized sealing cartridge for annulus sealing between tubular well components |
| 01/28/2003 | CA2051027C Oilfield cementing tool |
| 01/23/2003 | WO2003006790A1 Expandable liner hanger with bypass |
| 01/23/2003 | WO2003006788A1 Method of expanding a tubular element in a wellbore |
| 01/23/2003 | WO2003006780A2 Device and method for injecting fluids into a wellbore |
| 01/23/2003 | WO2003006778A1 Drilling system and method for controlling equivalent circulating density during drilling of wellbores |
| 01/23/2003 | WO2002090710A3 Packer with lateral feed-through connection |
| 01/23/2003 | US20030015325 Fluid profile control in enhanced oil recovery |
| 01/22/2003 | EP1277915A1 Method of sealing an annular space |
| 01/22/2003 | EP1276956A1 Coiled tubing line deployment system |
| 01/22/2003 | EP1276955A1 Central circulation completion system |
| 01/22/2003 | CN2532233Y Compressed repeatedly packer |
| 01/22/2003 | CN2532232Y Balance pressure difference type sleeve external packer |
| 01/22/2003 | CN2532231Y Water filling packer |
| 01/22/2003 | CN2532230Y Packer capable of cleaning borehole |
| 01/22/2003 | CN2532229Y Horizontal shifting type packing box for oil pump |
| 01/21/2003 | US6508305 Compositions and methods for cementing using elastic particles |
| 01/16/2003 | WO2003004830A1 High pressure side-by-side wellhead system |
| 01/16/2003 | WO2003004821A2 Soap stick launcher and method for launching soap sticks |
| 01/16/2003 | US20030010504 Soap stick launcher and method for launching soap sticks |
| 01/16/2003 | US20030010503 Method for preventing critical annular pressure buildup |
| 01/16/2003 | US20030010499 Method for thermally protecting subsea installations, and apparatus for implementing such thermal protection |
| 01/16/2003 | US20030010498 Device and method for injecting fluids into a wellbore |
| 01/15/2003 | EP1274921A1 Method and apparatus for injecting one or more fluids into a borehole |
| 01/15/2003 | EP1274920A1 High pressure rotating blowout preventer assembly |
| 01/15/2003 | EP1274919A1 Top drive for casing connection |
| 01/15/2003 | EP1076757B1 Method and apparatus for sealing between casing and wellhead connector structure |
| 01/15/2003 | EP0824630B1 Mechanism for anchoring a well tool |
| 01/15/2003 | CN2531101Y BOP moving device |
| 01/14/2003 | US6505691 Subsea mud pump and control system |
| 01/14/2003 | US6505684 Hydraulic actuator |
| 01/14/2003 | CA2135446C Methods for monitoring reservoir-bearing formations, installations and devices for their implementation |
| 01/14/2003 | CA2073290C Fracturing method and apparatus |
| 01/14/2003 | CA2017333C Subsea hanger and running tool |
| 01/09/2003 | WO2003002847A1 Downhole non-metallic sealing system |
| 01/09/2003 | WO2003002846A1 Hanger assembly |
| 01/09/2003 | WO2003002845A1 Tensioning arrangement for a subsea wellhead assembly |
| 01/09/2003 | WO2002090711A3 Combined perforation and cement retainer tool for plugging a wellbore |
| 01/09/2003 | WO2001055550A9 Crossover tree system |
| 01/09/2003 | US20030006070 Method for subsea pod retrieval |
| 01/09/2003 | US20030006042 Horizontal spool tree assembly |
| 01/09/2003 | US20030006041 Nested stack-down casing hanger system for subsea wellheads |
| 01/09/2003 | US20030006038 Hydraulic cement, water, environmentally degradable water reducing and dispersing additives, set retarding additive and compressive strength and set accelerating additives |
| 01/09/2003 | US20030006035 High pressure side-by-side wellhead system |
| 01/08/2003 | EP1272734A1 New and improved method and apparatus for cleaning wellbore casing |
| 01/08/2003 | CN2530027Y Hydraulic compression packer |
| 01/08/2003 | CN2530026Y Packer for blocking water |
| 01/08/2003 | CN2530025Y Anti-theft anti-spurting and anti-deflection polished rod sealing device |
| 01/08/2003 | CN2530019Y Rotary tailpipe hanging device |
| 01/08/2003 | CN1098404C Method for use in well construction, repair and/or a bandonment |
| 01/08/2003 | CN1098403C Rotating connector with compensating unit |
| 01/07/2003 | US6502640 Hydraulic actuator |
| 01/07/2003 | US6502632 Well cap apparatus |
| 01/07/2003 | US6502631 Reinforced borehole plugs |
| 01/07/2003 | CA2215266C Apparatus and process for drilling and completing multiple wells |
| 01/07/2003 | CA2161586C Method of increasing the speed at which packing may be replaced in a stuffing box and a stuffing box |
| 01/03/2003 | WO2003001025A1 Subsea wellhead equipment |
| 01/03/2003 | WO2001038690A8 Setting an annular seal |
| 01/02/2003 | US20030000710 Resin impregnated continuous fiber plug with non-metallic element system |
| 01/02/2003 | US20030000709 Expandable liner and associated methods of regulating fluid flow in a well |
| 01/02/2003 | US20030000697 Method for placement of blocking gels or polymers at specific depths of penetration into oil and gas, and water producing formations |
| 01/02/2003 | US20030000694 Gasket with multiple sealing surfaces |
| 01/02/2003 | US20030000693 Blow out preventer testing apparatus |
| 01/02/2003 | EP1270870A1 Blow out preventer testing apparatus |
| 01/02/2003 | EP1268973A1 Annulus sealing method using eutectic metal and heat induction |
| 01/02/2003 | EP1268361A1 Cementing compositions and application of these compositions to cementing oil wells or the like |
| 01/02/2003 | DE20213568U1 Device for removal of ground air comprises at least one packer unit inserted in ground hole where it seals bore hole inner wall |
| 01/01/2003 | CN2528928Y Long-path longspan plugging position-regulation tubular column for thickened oil well |
| 01/01/2003 | CN2528927Y Side-drilling small-diameter packet |
| 01/01/2003 | CN2528926Y Packer |
| 01/01/2003 | CN2528925Y Cutter for sealing washer of well head |
| 01/01/2003 | CN2528924Y Electric submersible pump producing well head device |
| 01/01/2003 | CN2528921Y Casing floating coupling |
| 01/01/2003 | CN1388302A Rotary casing apparatus and method |
| 12/31/2002 | US6499537 Well reference apparatus and method |
| 12/31/2002 | CA2233791C Dual downhole injection system utilizing coiled tubing |
| 12/31/2002 | CA2214707C Method for measuring of flow and flowmeter |
| 12/31/2002 | CA2201497C System for pumping well fluids |
| 12/27/2002 | WO2002104074A1 Tubing system and extrusion method |
| 12/27/2002 | WO2002103854A2 Conductor system |
| 12/27/2002 | WO2002103280A1 Protection of blast holes |
| 12/27/2002 | WO2002103211A1 Accumulator apparatus, system and method |
| 12/26/2002 | US20020195739 Formation of the component from a composition that contains a polyetherketoneketone; heat stability and dimensional stability |
| 12/26/2002 | US20020195256 Downhole sealing |
| 12/26/2002 | US20020195248 Fracturing port collar for wellbore pack-off system, and method for using same |
| 12/26/2002 | US20020195244 Compression set, large expansion packing element for downhole plugs or packers |
| 12/25/2002 | CN2527789Y Automatic core adjusting continuous adding packing box |
| 12/25/2002 | CN2527700Y Variable multistage testing fluid gathering device |
| 12/25/2002 | CN1387603A Method for processing production layer in bottom hole area, packer therefor and method for securing packer inside bottom of hole |
| 12/25/2002 | CN1097134C Grouting pipe equipment and method of grouting using same for underground water well |
| 12/24/2002 | US6497291 Float valve assembly and method |
| 12/24/2002 | US6497290 Method and apparatus using coiled-in-coiled tubing |
| 12/24/2002 | US6497286 Method and apparatus for drilling a plurality of offshore underwater wells |
| 12/24/2002 | US6497280 Methods and associated apparatus for downhole data retrieval, monitoring and tool actuation |