Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 33 - Sealing or packing boreholes or wells
Patents for E21B 33 - Sealing or packing boreholes or wells (33,564)
06/2005
06/21/2005US6907937 Expandable sealing apparatus
06/21/2005US6907936 Method and apparatus for wellbore fluid treatment
06/21/2005US6907932 Control pod latchdown mechanism
06/21/2005CA2424800C Improved method and product for cementing hydrocarbon wells
06/21/2005CA2379867C Inflation control device
06/21/2005CA2303734C Shoe track saver
06/21/2005CA2300853C Conduit and cable bypass for downhole tools
06/21/2005CA2261650C Swivel
06/21/2005CA2168056C Valve for inflatable packer system
06/16/2005WO2005054625A1 Zeolite-containing remedial compositions
06/16/2005WO2004099549A3 Self-set bridge plug
06/16/2005WO2004055318A3 Horizontal spool tree with improved porting
06/16/2005WO2004035983B1 Open water running tool and lockdown sleeve assembly
06/16/2005US20050127673 Tubing seal
06/16/2005US20050126791 Reciprocating slickline pump
06/16/2005US20050126790 Method for using a multipurpose unit with multipurpose tower and a surface blow out preventer
06/16/2005US20050126788 Subsea wellhead assembly
06/16/2005US20050126782 Acid ammonium salts of an imide of polymaleic anhydride; hydraulic fracturing fluids used in enhanced oil recovery
06/16/2005DE10128837B4 Dichtungshalter für hydraulische Unterwasserkupplung Seal holder for undersea hydraulic coupling
06/15/2005EP1540669A1 Polypropylene cable jacket compositions with enhanced melt strength and physical properties
06/15/2005EP1540131A2 "top drive swivel apparatus and method"
06/15/2005EP1540130A1 An assembly and a method for intervention of a subsea well
06/15/2005CN2704683Y Self-regulating well sealed multi-functional packing box for preventing spraying
06/15/2005CN2704682Y Wellhead sealer of pumping unit
06/15/2005CN2704681Y Low-pressure multi-functional self-sealing well sealers
06/15/2005CN1206442C Method for preparing controlled size microgel and its use
06/14/2005US6904982 Subsea mud pump and control system
06/14/2005US6904970 Cementing manifold assembly
06/14/2005CA2370006C Composite landing collar for cementing operation
06/14/2005CA2218106C Cementing plug
06/09/2005WO2005052316A2 Molded foam plugs, plug systems and methods of using same
06/09/2005WO2005052312A1 Compressible darts and methods for using these darts in subterranean wells
06/09/2005WO2005052311A1 Plug systems and methods for using plugs in subterranean formations
06/09/2005WO2005052310A2 Methods of using cement compositions having long-term slurry-state stability
06/09/2005WO2005052308A1 Swelling layer inflatable
06/09/2005WO2005052305A1 Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
06/09/2005WO2004101473A3 Under-neutralized alkylxylene sulfonic acid composition for enhanced oil recovery processes
06/09/2005US20050124501 Sealant compositions and methods of using the same to isolate a subterranean zone from a disposal well
06/09/2005US20050121232 Downhole filter
06/09/2005US20050121201 Retrievable bridge plug
06/09/2005US20050121199 Casing hanger annulus monitoring system
06/09/2005US20050121198 Subsea completion system and method of using same
06/09/2005CA2545398A1 Molded foam plugs, plug systems and methods of using same
06/08/2005EP1373766A4 Metal-to-metal seal with soft metal insert
06/08/2005EP1278936B1 Tubing hanger with annulus bore
06/08/2005EP0857247B1 Assembly and process for drilling and completing multiple wells
06/08/2005CN2703870Y Blowout-proof sieve tube
06/08/2005CN2703868Y Acidifying lower-sealing packer
06/08/2005CN2703867Y Hydraulic sucker rod well packer
06/08/2005CN1624294A Acidification well cementation quality technology
06/08/2005CN1624293A Natural split-flow balancing squeeze in water-stop technology
06/07/2005US6902199 ROV activated subsea connector
06/07/2005US6902008 Bi-directionally boosting and internal pressure trapping packing element system
06/07/2005US6902007 Blow out preventer transportation
06/07/2005US6902005 Tubing annulus communication for vertical flow subsea well
06/07/2005US6902001 Cementing compositions and application of such compositions for cementing oil wells or the like
06/07/2005CA2316044C Reservoir monitoring through modified casing joint
06/07/2005CA2214459C Process for the consolidation of sand
06/02/2005WO2005049961A1 Device of a test plug
06/02/2005WO2005049958A1 Device for removal and filtration of drilling fluid
06/02/2005WO2005049956A2 High pressure wireline top-entry packoff apparatus and method
06/02/2005US20050115720 Setting method for coiled tubing run, through tubing bridge plug
06/02/2005US20050115715 Wellhead seal unit
06/02/2005US20050115712 Fluid injection system
06/02/2005US20050115707 Sealing element for pipes and methods for using this
06/02/2005US20050115619 Choke valve with temperature transmitter
06/01/2005EP1534644A1 Well cementing compositions and methods
06/01/2005CN2703119Y Lubricating sealing device
06/01/2005CN2703116Y Underbalancing well hydraulic auxiliary pipe
06/01/2005CN1623028A Apparatus and method for free-fall installation of an underwater wellhead
06/01/2005CN1621658A Well cementing technology by center tube replacing elutriation method
06/01/2005CN1621657A Method for plugging water injection oil well high permeability zone by polyblend
05/2005
05/31/2005US6899186 Apparatus and method of drilling with casing
05/31/2005US6899181 Methods and apparatus for expanding a tubular within another tubular
05/31/2005US6899172 Abrasion resistant frac head
05/31/2005US6898968 Method and device for measuring a path that has been covered
05/26/2005WO2005047646A1 Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
05/26/2005WO2005047639A2 Subsea completion system and method of using same
05/26/2005US20050110217 Swelling layer inflatable
05/26/2005US20050109540 Method of drilling with magnetorheological fluid
05/26/2005US20050109514 Tree mounted well flow interface device
05/26/2005US20050109512 Method to form a barrier in a reservoir with a magnetorheological fluid
05/26/2005US20050109511 Oil and gas well alloy squeezing method and apparatus
05/26/2005US20050109508 Techniques and systems associated with perforation and the installation of downhole tools
05/26/2005US20050109507 Methods of using cement compositions having long-term slurry-state stability
05/26/2005US20050109502 Downhole seal element formed from a nanocomposite material
05/26/2005CA2826503A1 Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
05/26/2005CA2526714A1 Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
05/25/2005EP1533469A1 Downhole seal element formed from a nanocomposite material
05/25/2005EP1533467A2 Multilateral well drilling and completion method and apparatus
05/25/2005DE102004047386A1 Dichtungshalter mit Metalldichtungsgliedern für Unterwasserhydraulikkupplung Seal holder with metal sealing members for underwater hydraulic clutch
05/25/2005CN2702048Y Repeatedly locking and releasing packer
05/25/2005CN2702047Y Multi-stage bias-adjusting sealing and blowout-preventing well plugging device
05/25/2005CN2702046Y Breaking and dropping off preventing polish rod sealer
05/24/2005WO2006078230A1 Clamping well casings
05/24/2005US6896076 Rotating drilling head gripper
05/24/2005US6896074 System and method for installation and use of devices in microboreholes
05/24/2005US6896064 Compression set packer and method of use
05/24/2005US6896063 Methods of using downhole polymer plug
05/24/2005US6896061 Multiple zones frac tool
1 ... 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 ... 336