| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 06/17/2008 | CA2370159C Downhole device for controlling fluid flow in a well |
| 06/14/2008 | CA2613020A1 System and method for controlling actuation of a well component |
| 06/13/2008 | CA2571100A1 Method and apparatus to provide electrical connection in a wellhead for a downhole electrical device |
| 06/12/2008 | US20080136122 Thermoplastic seal and method |
| 06/12/2008 | US20080135791 Dual-direction ram-type blowout preventer seal |
| 06/12/2008 | US20080135260 Field assembled packer |
| 06/12/2008 | US20080135251 Compositions and applications of resins in treating subterranean formations |
| 06/12/2008 | US20080135250 Method of Sealing an Annular Space In a Wellbore |
| 06/12/2008 | US20080135249 Well system having galvanic time release plug |
| 06/12/2008 | US20080135248 Method and apparatus for completing and fluid treating a wellbore |
| 06/12/2008 | US20080135243 Method of Reducing Water Influx Into Gas Wells |
| 06/12/2008 | US20080135240 Inflatable Packer Assembly |
| 06/12/2008 | US20080135231 Downhole trigger apparatus |
| 06/12/2008 | CA2673102A1 System and method for facilitating downhole operations |
| 06/12/2008 | CA2611047A1 Fracturing fluid loss control agent |
| 06/12/2008 | CA2610907A1 Apparatus and methods for obtaining measurements below bottom sealing elements of a straddle tool |
| 06/11/2008 | EP1929121A2 In-situ solidification of invert emulsion fluids to form gas tight annular barrier |
| 06/11/2008 | CN201071734Y Coal seam water injection hole sealing device |
| 06/11/2008 | CN201071702Y Self-sealing packer |
| 06/11/2008 | CN201071701Y Hydraulic blocking device of oil pipe |
| 06/11/2008 | CN201071700Y Hydraulic self-sealing blowout preventer |
| 06/11/2008 | CN201071699Y Combined dustproof structure of rotary blowout preventer end face |
| 06/11/2008 | CN201071698Y Multifunctional sand prevention shaft mouth device |
| 06/11/2008 | CN201071697Y Plugging and acidizing well construction ground manifold |
| 06/11/2008 | CN201071696Y Packing box of deflection regulating shaft mouth |
| 06/11/2008 | CN101196115A Construction method and device for high pressure underground gas storing well |
| 06/11/2008 | CN101196103A Squeezing cement plugging technical skill for thick oil absorption well |
| 06/10/2008 | US7384894 Cement compositions with improved fluid loss characteristics and methods of cementing in surface and subterranean applications |
| 06/10/2008 | US7384893 Cement compositions with improved fluid loss characteristics and methods of cementing in surface and subterranean applications |
| 06/10/2008 | US7383891 Hydraulic set permanent packer with isolation of hydraulic actuator and built in redundancy |
| 06/10/2008 | US7383878 Multi-part plunger |
| 06/10/2008 | CA2559815C Packer apparatus with annular check valve |
| 06/10/2008 | CA2535882C Apparatus and methods for preventing or limiting rotation of cementing plugs |
| 06/10/2008 | CA2517063C A method of using a swelling agent to prevent a cement slurry from being lost to a subterranean formation |
| 06/10/2008 | CA2494290C Disposable downhole tool with segmented compression element and method |
| 06/10/2008 | CA2471028C Safety cover for an artesian well |
| 06/10/2008 | CA2468936C Methods and compositions for sealing an expandable tubular in a wellbore |
| 06/10/2008 | CA2209516C Thixotropic materials |
| 06/05/2008 | WO2008065559A1 Improved inflatable packers |
| 06/05/2008 | WO2007126496A3 Wellbore method and apparatus for sand and inflow control during well operations |
| 06/05/2008 | US20080132711 High Molecular Weight Polyamine Salts as Clay Stabilizing Agents |
| 06/05/2008 | US20080128140 Methods and apparatus for wellbore construction and completion |
| 06/05/2008 | US20080128133 Wellbore plug adapter kit |
| 06/05/2008 | CA2669501A1 Reinforced slat body for inflatable packer |
| 06/04/2008 | CN201068795Y Wellhead pressure test device |
| 06/04/2008 | CN201068779Y Eccentric center water-dispensing packer |
| 06/04/2008 | CN201068778Y Slim-hole horizontal well fracturing packer |
| 06/04/2008 | CN201068777Y Thermal production well liner tube sealing device |
| 06/04/2008 | CN201068776Y Heavy pressure acidizing fracturing packer |
| 06/04/2008 | CN201068775Y Anti-pollution thermal washing anchoring and sealing device |
| 06/04/2008 | CN201068774Y Large passage plunger piston reciprocating mechanical dynamic seal wellhead |
| 06/04/2008 | CN201068773Y Oil well wellhead two stage sealed oil drainage and oil spraying prevention device |
| 06/04/2008 | CN201068772Y Pumping polish rod sealing device |
| 06/04/2008 | CN201068771Y Self-sealing device for sucker rod |
| 06/04/2008 | CN201068770Y Polish rod sealing device for well head |
| 06/04/2008 | CN201068769Y Oil extraction wellhead reversing-proof packing kit |
| 06/04/2008 | CN201068768Y Elevated plain pumped well port anti-theft box |
| 06/04/2008 | CN201068742Y Blowout prevention on-off connector |
| 06/04/2008 | CN101194083A Annular packer device |
| 06/04/2008 | CN101191408A Ocean underwater device |
| 06/03/2008 | US7381905 Structure for fixing an electronic device to a substrate |
| 06/03/2008 | US7380610 Stripper rubber insert assembly |
| 06/03/2008 | US7380609 Method and apparatus of suspending, completing and working over a well |
| 06/03/2008 | US7380607 Casing hanger with integral load ring |
| 06/03/2008 | US7380604 One trip cemented expandable monobore liner system and method |
| 06/03/2008 | US7380603 Well abandonment apparatus |
| 06/03/2008 | US7380600 Degradable material assisted diversion or isolation |
| 06/03/2008 | US7380592 Pressure control tool for modluating pressure in a portion of a wellbore |
| 06/03/2008 | US7380591 Mechanical connection system |
| 06/03/2008 | US7380590 Rotating pressure control head |
| 06/03/2008 | CA2557100C Removable surface pack-off device for reverse cementing applications |
| 06/03/2008 | CA2519325C Methods and apparatus for expanding tubular strings and isolating subterranean zones |
| 06/03/2008 | CA2507116C Variable size coil tubing gripping elements |
| 06/03/2008 | CA2505896C A method for enhancing the stability of a water sensitive, reactive subterranean formation |
| 06/03/2008 | CA2458433C By-pass valve mechanism and method of use hereof |
| 06/03/2008 | CA2371113C Pump systems and methods |
| 06/03/2008 | CA2355798C Method of casing multilateral wells and associated apparatus |
| 06/03/2008 | CA2353771C Oil-based settable spotting fluid |
| 06/03/2008 | CA2304687C Apparatus and method for installing a branch junction from a main well |
| 06/01/2008 | CA2610606A1 Packer cup systems for use inside a wellbore |
| 05/29/2008 | WO2008064305A2 Recovery of bitumen by hydraulic excavation |
| 05/29/2008 | WO2008063979A1 Spring energized debris barrier for mechanically set retrievable packer |
| 05/29/2008 | WO2008062187A1 Downhole apparatus and method |
| 05/29/2008 | WO2008062186A1 Downhole apparatus and support structure therefor |
| 05/29/2008 | WO2008062178A1 Downhole apparatus and method |
| 05/29/2008 | WO2008062177A1 Down hole apparatus and method |
| 05/29/2008 | US20080122182 Progressive cavity pump (pcp) drive head stuffing box with split seal |
| 05/29/2008 | US20080121436 Downhole seal element formed from a nanocomposite material |
| 05/29/2008 | US20080121429 Subsea Drilling |
| 05/29/2008 | US20080121394 Downhole Sampling Tool and Method for Using Same |
| 05/29/2008 | CA2668678A1 Downhole swelling assembly and modular system |
| 05/29/2008 | CA2668677A1 Downhole apparatus and method |
| 05/29/2008 | CA2668590A1 Downhole apparatus and method |
| 05/29/2008 | CA2668582A1 Downhole apparatus and support structure therefor |
| 05/29/2008 | CA2668552A1 Spring energized debris barrier for mechanically set retrievable packer |
| 05/29/2008 | CA2611798A1 Oilfield apparatus comprising swellable elastomers having nanosensors therein and methods of using same in oilfield applications |
| 05/28/2008 | CN201065749Y Cement retainer sealing tool |
| 05/28/2008 | CN201065748Y Eccentric wear prevention stuffing box |
| 05/28/2008 | CN201065747Y Oil well oil and water recovery box |
| 05/28/2008 | CN101187301A Coal bed gas wellhead device |