| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 08/02/2006 | CN2802072Y Anti-leakage device for wellhead of production stopped well |
| 08/02/2006 | CN2802071Y Auto-regulating anti-blowout packing box and special anti-blowout well shut-in appartus for eccentric wellhead |
| 08/02/2006 | CN2802070Y Flow regulator |
| 08/02/2006 | CN2802069Y Internal heating type well head thermal insulation device |
| 08/02/2006 | CN2802068Y Thermal insulation protection cover for wellhead of oil well |
| 08/02/2006 | CN2802067Y Mechanical self-sealing device |
| 08/01/2006 | USRE39209 Production fluid control device and method for oil and/or gas wells |
| 08/01/2006 | US7083006 Non-rotating sensor assembly for measurement-while-drilling applications |
| 08/01/2006 | US7083005 Apparatus and method of drilling with casing |
| 08/01/2006 | US7082996 Method and apparatus to complete a well having tubing inserted through a valve |
| 08/01/2006 | US7082991 Slip spring with heel notch |
| 08/01/2006 | US7082822 Internal riser inspection device and methods of using same |
| 08/01/2006 | CA2461402C Wellhead and control stack pressure test plug tool |
| 08/01/2006 | CA2294010C Casing annulus remediation system |
| 08/01/2006 | CA2224258C Surface controlled formation isolation valve adapted for deployment of a desired length of a tool string in a wellbore |
| 07/27/2006 | WO2006077482A1 A sealing element and a coupling device provided with such a sealing element |
| 07/27/2006 | WO2006059223A3 Electro-hydraulic process control system and method |
| 07/27/2006 | US20060166834 Subterranean treatment fluids comprising substantially hydrated cement particulates |
| 07/27/2006 | US20060162939 Dual flapper safety valve |
| 07/27/2006 | US20060162936 Mounts for blowout preventer bonnets |
| 07/27/2006 | US20060162930 Placing a sealant composition containing a crosslinkable material, a crosslinking agent, a fluid loss control additive, and water in a permeable zone and setting to effect zonal isolation of the subterranean formation |
| 07/27/2006 | US20060162926 Methods of using substantially hydrated cement particulates in subterranean applications |
| 07/27/2006 | US20060162925 Method and apparatus for positioning a sleeve down hole in a hydrocarbon producing well and pipelines |
| 07/26/2006 | EP1682744A2 System for drilling oil and gas wells using a concentric drill string to deliver a dual density mud |
| 07/26/2006 | EP1608839A4 Method and apparatus to complete a well having tubing inserted through a valve |
| 07/26/2006 | CN2799853Y Oil well heater |
| 07/26/2006 | CN2799852Y Hydraulic setting and up-pulling releasing type packer- |
| 07/26/2006 | CN2799851Y Running-pulling free internal-circulating sand-control packer |
| 07/26/2006 | CN2799850Y Small-diameter packer for fracturing operation |
| 07/26/2006 | CN2799849Y Packer for plugging shot hole |
| 07/26/2006 | CN2799848Y Plug anti-seize structure |
| 07/26/2006 | CN2799847Y Automatic locking device for ram preventer |
| 07/26/2006 | CN2799846Y Combined double-stage casing head |
| 07/26/2006 | CN2799845Y Well mouth flange anti-theft device |
| 07/26/2006 | CN2799844Y Anti-theft and anti-jetting hand-free filtration type injection and production well mouth |
| 07/26/2006 | CN2799837Y Deflection preventing device for polished rod of pumping unit |
| 07/26/2006 | CN1807834A Acoustic variable-density well logging instrument |
| 07/26/2006 | CN1807831A Indoor evaluation method for profile control and water shutoff technology using polymer microsphere |
| 07/25/2006 | US7081439 treating a medium to high permeability subterranean formation by injecting a thickening amount of a viscoelastic surfactant with an optional hydrophobic polymer and a mica-free, aqueous suspension of colloidal silica, alumina, antimony oxide, tin oxide, cerium oxide, yttrium oxide or zirconium oxide |
| 07/25/2006 | US7080702 Rotating deck bushing with dust guard system |
| 07/25/2006 | US7080697 Method and device for drilling a hole and for securing an anchorage in a bore hole |
| 07/25/2006 | US7080693 Retrievable packer assembly, method, and system with releasable body lock ring |
| 07/25/2006 | US7080687 Anti-rotation method and apparatus for limiting rotation of cementing plugs |
| 07/25/2006 | US7080685 High pressure rotating drilling head assembly with hydraulically removable packer |
| 07/25/2006 | CA2495364C Well tool anchor and method of releasing gripping elements |
| 07/25/2006 | CA2425565C Magnetic sensor system useful for detecting tool joints in a downhold tubing string |
| 07/25/2006 | CA2403293C Apparatus to actuate downhole tool |
| 07/25/2006 | CA2307105C Drilling and cementing through shallow waterflows |
| 07/20/2006 | WO2006075181A1 Purge system |
| 07/20/2006 | WO2006075154A1 Degradable polymers for wellbore fluids and processes |
| 07/20/2006 | US20060157254 Hydraulic control system |
| 07/20/2006 | US20060157250 Improvements In or Relating to Sub Sea Control and Monitoring |
| 07/20/2006 | US20060157245 Process for reducing the production of water in oil wells |
| 07/20/2006 | US20060157244 Compositions comprising melt-processed inorganic fibers and methods of using such compositions |
| 07/20/2006 | US20060157238 Inhibiting breakthrough of driving fluid via a permeable geological layer into an oil production well |
| 07/20/2006 | CA2594980A1 Purge system |
| 07/19/2006 | EP1680573A1 Expandable wellbore assembly |
| 07/19/2006 | CN2797626Y Oil field testing blowout preventer |
| 07/19/2006 | CN2797620Y Compensating type thermosensitive metal packer |
| 07/19/2006 | CN2797619Y Blowout preventer for continuous oil sucking rod operation |
| 07/19/2006 | CN2797618Y Wellhead sealing device for single crank, double-stroke and flexible rope type oil sucking system |
| 07/19/2006 | CN2797617Y Polishing rod sealing device with automatic centering function |
| 07/19/2006 | CN2797616Y Combination type well head device with electric pump flow-rate regulating function |
| 07/19/2006 | CN2797611Y Straight-through type fracture wellhead casing protector |
| 07/19/2006 | CN1806088A Lightweight and compact subsea intervention package and method |
| 07/19/2006 | CN1265075C Sand consolidation water plugging agent |
| 07/19/2006 | CN1264602C High-hydroscopicity polymer resin microcapsule and its production process |
| 07/18/2006 | US7077214 Expansion set packer with bias assist |
| 07/18/2006 | US7077213 Expansion cone for radially expanding tubular members |
| 07/18/2006 | US7077212 Method of hydraulically actuating and mechanically activating a downhole mechanical apparatus |
| 07/18/2006 | US7077211 Method of creating a casing in a borehole |
| 07/18/2006 | US7077203 Methods of using settable compositions comprising cement kiln dust |
| 07/18/2006 | US7077195 Borehole closure |
| 07/18/2006 | CA2365310C Wellbore primary barrier and related systems |
| 07/13/2006 | WO2004089608A3 Apparatus for radially expanding and plastically deforming a tubular member |
| 07/13/2006 | US20060151183 Isolation system comprising a plug and a circulation valve and method of use |
| 07/13/2006 | US20060151182 Seal cup for a wellbore tool and method |
| 07/13/2006 | US20060151175 Lightweight and compact subsea intervention package and method |
| 07/13/2006 | US20060151171 Delayed-gelation solution |
| 07/13/2006 | US20060151168 Methods of preparing and using coated particulates |
| 07/13/2006 | DE102005058058A1 Hydrauliksteuersystem The hydraulic control system |
| 07/12/2006 | EP1483220B1 Lightweight well cement compositions and methods |
| 07/12/2006 | EP1373680B1 Method of well treatment |
| 07/12/2006 | EP1019614B1 Casing filling and circulating apparatus |
| 07/12/2006 | EP0857246B1 Means and method for the preparation of sealings in oil and gas wells |
| 07/12/2006 | CN2795440Y Concentric integrated negative over surplus internal fishing type liquid distributor |
| 07/12/2006 | CN2795438Y Viscous crude oil hot production seal part |
| 07/11/2006 | US7073593 Method of drilling and operating a subsea well |
| 07/11/2006 | US7073592 Jacking frame for coiled tubing operations |
| 07/11/2006 | US7073591 Casing hanger annulus monitoring system |
| 07/11/2006 | US7073586 Contacting oil or gas formation in a sequence with an aqueous solution, a hydrocarbon fluid, a glycol ether solvent, an epoxy resin derived from bisphenols, or a poly phenolic resin (novolac resins) in a glycol ether solvent, and then with a polyamine curing agent |
| 07/11/2006 | US7073585 Cement compositions with improved fluid loss characteristics and methods of cementing in surface and subterranean applications |
| 07/11/2006 | US7073584 Processes for incorporating inert gas in a cement composition containing spherical beads |
| 07/11/2006 | US7073580 Inflation tool with real-time temperature and pressure probes |
| 07/11/2006 | CA2436669C Modular retrievable packer |
| 07/11/2006 | CA2355509C Downhole isolation valve |
| 07/11/2006 | CA2209224C Method of creating a casing in a borehole |
| 07/06/2006 | WO2006046075A3 Improved plug |
| 07/06/2006 | WO2006014939A3 Cementing head |
| 07/06/2006 | US20060144620 Wellbore consolidating tool for rotary drilling applications |