| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 09/17/2013 | US8536101 Expoxy acid based biodegradable set retarder for a cement composition |
| 09/15/2013 | CA2783903A1 Cement retainer and squeeze technique |
| 09/12/2013 | WO2013134320A2 Apparatus and methods of running an expandable liner |
| 09/12/2013 | WO2013134317A2 Apparatus and method for completing a wellbore |
| 09/12/2013 | WO2013134250A1 Wellhead system with gasket seal |
| 09/12/2013 | WO2013134034A2 External casing packer and method of performing cementing job |
| 09/12/2013 | WO2013133973A2 Improved segmented seat for wellbore servicing system |
| 09/12/2013 | WO2013133796A1 Deactivation of packer with safety joint |
| 09/12/2013 | WO2013133720A1 Method for zone isolation in a subterranean well |
| 09/12/2013 | WO2013133719A1 A method for combined cleaning and plugging in a well and a flushing tool for flushing in a well |
| 09/12/2013 | WO2013131194A1 Toe circulation sub |
| 09/12/2013 | WO2013131165A1 Magnetic installation and retrieval tool for fluid lift plungers |
| 09/12/2013 | WO2012164051A3 Extrusion preventing supporting device |
| 09/12/2013 | WO2012148840A3 Weighted pressure relief valve |
| 09/12/2013 | US20130233574 Method and apparatus for setting a wellbore packer |
| 09/12/2013 | US20130233573 Deactivation of packer with safety joint |
| 09/12/2013 | US20130233572 External Casing Packer and Method of Performing Cementing Job |
| 09/12/2013 | US20130233569 Anti-alteration wellhead vault |
| 09/12/2013 | US20130233564 Segmented seat for wellbore servicing system |
| 09/12/2013 | US20130233562 Blowout preventer assembly |
| 09/12/2013 | US20130233556 Rotating flow control diverter |
| 09/12/2013 | US20130233552 Macromolecular, amphiphilic compounds as water retention agents for construction chemistry systems, in particular for well cementing |
| 09/12/2013 | US20130233551 Methods for Servicing Subterranean Wells |
| 09/12/2013 | US20130233550 Set-Delayed Cement Compositions Comprising Pumice and Associated Methods |
| 09/12/2013 | US20130233549 System for controlling cement flow in a well |
| 09/12/2013 | US20130233548 Apparatus and method for completing a wellbore |
| 09/12/2013 | US20130233547 Subsea casing drilling system |
| 09/12/2013 | US20130233546 Degradable Fluid Sealing Compositions Having an Adjustable Degradation Rate and Methods for Use Thereof |
| 09/12/2013 | US20130233534 Latch assembly |
| 09/12/2013 | CA2828259A1 Magnetic installation and retrieval tool for fluid lift plungers |
| 09/11/2013 | EP2636843A1 Well completion |
| 09/11/2013 | EP2636841A1 Rotating control head radial seal protection and leak detection systems |
| 09/11/2013 | EP2636840A1 Bottomhole assembly for capillary injection system |
| 09/11/2013 | EP2635768A1 Method and apparatus for coupling an earth pipe into the ground, using a solidifying mass. |
| 09/11/2013 | EP2635767A2 Method and apparatus for sealing a well |
| 09/11/2013 | EP2635760A1 Drilling device for use especially during directional drilling for recovery of geothermal energy |
| 09/11/2013 | CN203191180U Test device for rubber barrel of packer |
| 09/11/2013 | CN203188992U Multistage hydraulic jetting staged fracturing pipe column structure |
| 09/11/2013 | CN203188991U Sliding sleeve type layered eight-level fracturing pipe column |
| 09/11/2013 | CN203188971U Cement surface controlling tool |
| 09/11/2013 | CN203188970U Double-plug well cementation cement head structure |
| 09/11/2013 | CN203188969U Thermal washing paraffin removal packer |
| 09/11/2013 | CN203188968U Cable-passing well-washable packer |
| 09/11/2013 | CN203188967U Repeatable unsetting and stage-by-stage unsetting packer |
| 09/11/2013 | CN203188966U Secondary wedging and permanent seat sealing type packer |
| 09/11/2013 | CN203188965U Holding clamping position limiting type small-diameter step-by-step deblocking packer |
| 09/11/2013 | CN203188964U Blanking plug for sand prevention |
| 09/11/2013 | CN203188963U In-pipe packer for oil drivepipe leakproofness detection |
| 09/11/2013 | CN203188962U Blocking tool for testing of small-diameter coiled oil tube |
| 09/11/2013 | CN203188961U Repeated air bag hole packer |
| 09/11/2013 | CN203188960U Capsule hole packers and capsule hole packing device |
| 09/11/2013 | CN203188959U Planting device for cable of high-pressure injection wellhead |
| 09/11/2013 | CN203188958U Well mouth sealer of annular filling sand-prevention well |
| 09/11/2013 | CN203188950U Hanger sealing device |
| 09/11/2013 | CN103299028A Tools and methods for use in completion of a wellbore |
| 09/11/2013 | CN103299026A Shape memory material packer for subterranean use |
| 09/11/2013 | CN103299025A Flowline divertor seal with spring-energized lips |
| 09/11/2013 | CN103291240A Packer central pipe unscrewing-resistant locking mechanism and packer with mechanism |
| 09/11/2013 | CN102287163B Drilling-sealing method and sealing device of coal mine underground ultrahigh pressure fracturing hole |
| 09/11/2013 | CN101517192B Pressure energized radial seal |
| 09/10/2013 | US8530393 Methods to characterize fracture plugging efficiency for drilling fluids |
| 09/10/2013 | US8528912 Method and apparatus for injecting packing into stuffing boxes for reciprocating rods |
| 09/10/2013 | US8528647 Riser pipe with rigid auxiliary lines assembled by pins |
| 09/10/2013 | US8528638 Single well dual/multiple horizontal fracture stimulation for oil production |
| 09/10/2013 | US8528633 Dissolvable tool and method |
| 09/10/2013 | US8528632 Packer deployment with electric submersible pump with optional retention of the packer after pump removal |
| 09/10/2013 | US8528631 Seal configuration for top drive swivel apparatus and method |
| 09/10/2013 | CA2729427C Rotating control head radial seal protection and leak detection systems |
| 09/07/2013 | CA2809307A1 Anti-alteration wellhead vault |
| 09/06/2013 | WO2013130266A1 High-pressure cap equalization valve |
| 09/06/2013 | WO2013130227A1 Testing compressive and tensile strength of cement in a single device |
| 09/06/2013 | WO2013129933A1 Hub and connector arrangement |
| 09/06/2013 | WO2013128222A1 Packer end ring with polymer gripping device |
| 09/06/2013 | WO2013128220A1 Packer end ring with device for gripping base pipe |
| 09/05/2013 | US20130228340 Wellhead System with Gasket Seal |
| 09/05/2013 | US20130228339 Apparatus for, and method of, landing items at a well location |
| 09/05/2013 | US20130228326 Ball injecting apparatus for wellbore operations with external loading port |
| 09/05/2013 | US20130228279 System and method for enhancing packer operation and longevity |
| 09/04/2013 | EP2633156A1 Methods to enhance the productivity of a well |
| 09/04/2013 | CN203176725U Nitrogen standby system of ground blowout preventer control device |
| 09/04/2013 | CN203175479U Connector capable of preventing slipping of drilling and milling and used for rapid drillable bridge plug |
| 09/04/2013 | CN203175478U Underground intelligent rubber plug apparatus |
| 09/04/2013 | CN203175477U Novel grouting hole packer |
| 09/04/2013 | CN203175476U Cementing truck |
| 09/04/2013 | CN203175475U High resilience force type packer rubber tube |
| 09/04/2013 | CN203175474U Filling device for oil extraction and well completion |
| 09/04/2013 | CN203175473U Pump passing type water-plugging packer |
| 09/04/2013 | CN203175472U Steam driving and injecting packer |
| 09/04/2013 | CN203175471U Disposable plugging-type packer |
| 09/04/2013 | CN203175470U Hydraulic expanding packer |
| 09/04/2013 | CN203175469U Hydraulic packer |
| 09/04/2013 | CN203175468U Two-level external casing packer for well completion of multilateral well |
| 09/04/2013 | CN203175467U Adjustable water faucet |
| 09/04/2013 | CN203175466U Rubber hole packer for grouting |
| 09/04/2013 | CN203175465U Packer for exploiting and fracturing of shale gas reservoir |
| 09/04/2013 | CN203175464U Novel well sealing device |
| 09/04/2013 | CN203175463U Steam flooding thermal compensation type sealer |
| 09/04/2013 | CN203175462U Machine setting packer |
| 09/04/2013 | CN203175461U Novel in-hole deslagging and plugging device |
| 09/04/2013 | CN203175460U Pressure-bearing sealing device for drilling liner cementing |