| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 06/27/2013 | WO2012052402A3 Latching apparatus and method |
| 06/27/2013 | US20130161029 Hydrodynamic journal bearing flow control bushing for a rotating control device |
| 06/27/2013 | US20130161028 Combination burst-disc subassembly for horizontal and vertical well completions |
| 06/27/2013 | US20130161020 Apparatus and Method for Recovering Fluids from a Well and/or Injecting Fluids into a Well |
| 06/27/2013 | US20130161006 Downhole sealing using settable material in an elastic membrane |
| 06/27/2013 | US20130161005 Modular dart launcher with status indicator |
| 06/27/2013 | US20130161000 Downhole isolation methods and apparatus therefor |
| 06/27/2013 | US20130160996 Downhole Packer Assembly Having a Selective Fluid Bypass and Method for Use Thereof |
| 06/27/2013 | CA2858512A1 Compositions and methods for servicing subterranean wells |
| 06/27/2013 | CA2858474A1 An annular barrier with a self-actuated device |
| 06/27/2013 | CA2858472A1 An annular barrier with an expansion detection device |
| 06/27/2013 | CA2856053A1 Seal sleeve and assembly including such a seal sleeve |
| 06/26/2013 | EP2607614A1 An annular barrier with an expansion detection device |
| 06/26/2013 | EP2607613A1 An annular barrier with a self-actuated device |
| 06/26/2013 | EP2607612A1 Hydrodynamic Journal Bearing Flow Control Bushing for a Rotating Control Device |
| 06/26/2013 | EP2607611A1 Grease delivery system |
| 06/26/2013 | EP2607610A2 Shear blade with enhanced toughness for ram-type blowout preventer |
| 06/26/2013 | EP2606198A2 Blowout preventer with shearing blades and method |
| 06/26/2013 | EP2606013A1 Compositions and methods for well completions |
| 06/26/2013 | CN203022803U Wind-pressing-type fast hole sealing device for underground coal mine |
| 06/26/2013 | CN203022724U Control monitoring device of rotary blowout preventer |
| 06/26/2013 | CN203022712U Combined geothermal well with perforation structure |
| 06/26/2013 | CN203022695U Chemical feed tool for offshore oilfield production tubular column |
| 06/26/2013 | CN203022686U Removable bridge plug |
| 06/26/2013 | CN203022685U Casing float collar device for cementing |
| 06/26/2013 | CN203022684U Casing float shoe device for cementing |
| 06/26/2013 | CN203022683U Composite rubber sleeve packer |
| 06/26/2013 | CN203022682U Setting device for detection pressurization of gas tightness of casing pipe |
| 06/26/2013 | CN203022681U Drilling and hole sealing device |
| 06/26/2013 | CN203022680U Repeated-seal and large-drift diameter water injection packer |
| 06/26/2013 | CN203022679U Multi-plug hole packer for water-pressure test in drilled hole |
| 06/26/2013 | CN203022678U Blowout preventer pressure testing and boosting device |
| 06/26/2013 | CN203022677U Self-sealing core of blowout preventer |
| 06/26/2013 | CN203022676U Polish rod sealer packing pressing cap fixing clip |
| 06/26/2013 | CN203022675U Thermal recovery well mouth protecting device |
| 06/26/2013 | CN203022666U Multilevel heavy load rotary tail tube hanger |
| 06/26/2013 | CN203022664U Well mouth head feed device capable of synchronously completing operation of washing well mouth |
| 06/26/2013 | CN203022647U Casing grouting circulating joint |
| 06/26/2013 | CN103180545A Compact cable suspended pumping system for lubricator deployment |
| 06/26/2013 | CN103180542A Surface multiple well |
| 06/26/2013 | CN103174398A Drilling type fracture bridge plug |
| 06/26/2013 | CN103174397A Test device and test method of simulating well concentration cement slurry displacement efficiency |
| 06/26/2013 | CN103174396A Grease delivery system |
| 06/26/2013 | CN103174395A Orifice blowout preventer |
| 06/26/2013 | CN103174394A Ram bop shear blade process to enhance the toughness |
| 06/26/2013 | CN102713136B Breech lock mechanisms for blowout preventer and method |
| 06/26/2013 | CN102453475B Leak-stopping agent for petroleum drilling, preparation method, and application thereof |
| 06/26/2013 | CN102061911B Method for measuring wall thickness of downhole casing |
| 06/25/2013 | US8470907 Additive for cementing wells |
| 06/25/2013 | US8469109 Deformable dart and method |
| 06/25/2013 | US8469107 Downhole-adjustable flow control device for controlling flow of a fluid into a wellbore |
| 06/25/2013 | US8469105 Downhole-adjustable flow control device for controlling flow of a fluid into a wellbore |
| 06/25/2013 | US8469101 Method and apparatus for flow assurance management in subsea single production flowline |
| 06/25/2013 | US8469095 Self adaptive cement systems |
| 06/25/2013 | US8469094 Additive for controlling cement slurry rheology |
| 06/25/2013 | US8469093 Apparatus and method for autofill equipment activation |
| 06/25/2013 | US8469088 Drillable bridge plug for high pressure and high temperature environments |
| 06/25/2013 | US8469087 Interface for deploying wireline tools with non-electric string |
| 06/25/2013 | US8469086 Apparatus and method for recovering fluids from a well and/or injecting fluids into a well |
| 06/25/2013 | CA2727120C Swelling delay cover for a packer |
| 06/23/2013 | CA2872246A1 Downhole isolation methods and apparatus therefor |
| 06/23/2013 | CA2798469A1 Downhole isolation methods and apparatus therefor |
| 06/20/2013 | WO2013090805A1 Expandable seat assembly for isolating fracture zones in a well |
| 06/20/2013 | WO2013090760A1 Liner drilling using temporarily sealed liner |
| 06/20/2013 | WO2013090289A1 Completing a well in a reservoir |
| 06/20/2013 | WO2013090257A1 Energization of an element with a thermally expandable material |
| 06/20/2013 | WO2013089643A1 Subsea structure flowline connector assembly |
| 06/20/2013 | WO2013087588A1 Compositions and methods for servicing subterranean wells |
| 06/20/2013 | WO2013086617A1 Flow control hanger and polished bore receptacle |
| 06/20/2013 | WO2012164029A3 Subsea electrical architectures |
| 06/20/2013 | WO2012098377A3 Downhole tools |
| 06/20/2013 | WO2012094626A3 Test packer and method for use |
| 06/20/2013 | US20130153796 Underground Annular Blowout Preventer and Assembly Process Thereof |
| 06/20/2013 | US20130153243 Apparatus and method for reducing vibration in a borehole |
| 06/20/2013 | US20130153223 Wellbore Servicing Compositions and Methods of Making and Using Same |
| 06/20/2013 | US20130153222 Lightweight hollow particles for use in cementing |
| 06/20/2013 | US20130153221 Compositions and Methods for Well Completions |
| 06/20/2013 | US20130153220 Expandable seat assembly for isolating fracture zones in a well |
| 06/20/2013 | US20130153219 Plug and abandonment system |
| 06/20/2013 | US20130153214 Compositions Containing Kiln Dust and/or Biowaste Ash and Methods of Use |
| 06/20/2013 | US20130153212 Speed activated closure assembly in a tubular and method thereof |
| 06/20/2013 | US20130153207 Subterranean Tool with Multiple Release Capabilities |
| 06/20/2013 | US20130153204 Ram bop shear blade process to enhance the toughness |
| 06/20/2013 | US20130152824 Electrolytic composite materials |
| 06/20/2013 | CA2858242A1 Liner drilling using temporarily sealed liner |
| 06/20/2013 | CA2770088A1 Ball drop wellhead control apparatus |
| 06/19/2013 | EP2604788A2 Visual ram position indicator apparatuses and methods |
| 06/19/2013 | EP2604787A1 Subsea operating valve connectable to low pressure recipient |
| 06/19/2013 | EP2604786A2 Blow out preventer (bop) corroborator |
| 06/19/2013 | EP2604785A1 Downhole device actuator and method |
| 06/19/2013 | EP2603662A2 Fill up tool |
| 06/19/2013 | CN203009205U Pneumatic concrete hole sealing pump for mining |
| 06/19/2013 | CN203008966U Grouting obturator |
| 06/19/2013 | CN203008957U Synthetic polyurethane foaming bag for gas extraction hole sealing |
| 06/19/2013 | CN203008882U Under-pressure working device of low-short type oil field water injection well |
| 06/19/2013 | CN203008851U Cementing rotary flow short casing |
| 06/19/2013 | CN203008850U Separation type hole-sealing bag |
| 06/19/2013 | CN203008849U Tube external self-sealing stage collar device |
| 06/19/2013 | CN203008848U Telescopic casing-running mud filling device |
| 06/19/2013 | CN203008847U Horizontal well open hole gravel pack segmented stream guidance packer |