| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 09/26/2013 | WO2012078431A3 Dual seal tubing hanger |
| 09/26/2013 | US20130248209 High pressure tie back receptacle and seal assembly |
| 09/26/2013 | US20130248200 Function Spool |
| 09/26/2013 | US20130248199 Wellhead assembly having a sinusoidal sealing profile and a method to assemble the same |
| 09/26/2013 | US20130248183 Cement Set Activators for Set-Delayed Cement Compositions and Associated Methods |
| 09/26/2013 | US20130248182 Modular manifold of a wellsite fluid system and method of using same |
| 09/26/2013 | US20130248180 Retrievable cementing bushing system |
| 09/26/2013 | US20130248179 Packer For Alternate Flow Channel Gravel Packing and Method For Completing A Wellbore |
| 09/26/2013 | US20130248178 Wellbore Apparatus and Methods For Zonal Isolations and Flow Contgrol |
| 09/25/2013 | EP2642067A1 An Improved Seal |
| 09/25/2013 | EP2640928A2 Downhole method and apparatus for use in conditioning drilled bores |
| 09/25/2013 | EP2640922A1 Method, system and rock drilling apparatus for installing a pipe in drilled holes in rock drilling |
| 09/25/2013 | CN203214003U Float collar and pipe string using same |
| 09/25/2013 | CN203214002U Sump packer |
| 09/25/2013 | CN203214001U Isolation packer |
| 09/25/2013 | CN203214000U Small-diameter polymer flooding packer |
| 09/25/2013 | CN203213999U High-pressure water injection packer |
| 09/25/2013 | CN203213998U Downhole press mounting blowout preventer |
| 09/25/2013 | CN203213997U Two-end self-blocking-type belt-pressing hole-sealing bag |
| 09/25/2013 | CN203213996U In-situ combustion electric ignition remote control blowout preventer |
| 09/25/2013 | CN203213995U Wellhead equipment for steam injection and oil production |
| 09/25/2013 | CN203213994U Deviation-adjustable well mouth sealer |
| 09/25/2013 | CN203213993U Wellhead FOPS (Falling Object Protective Structures) device for petroleum drilling engineering |
| 09/25/2013 | CN203213992U Oilfield wellhead antitheft device |
| 09/25/2013 | CN203213991U Second level seal test choke plug |
| 09/25/2013 | CN203213990U Oil extraction well mouth device with leakage valve capable of being replaced safely |
| 09/25/2013 | CN103328766A Methods to enhance the productivity of a well |
| 09/25/2013 | CN103328761A Monitoring subsea installation |
| 09/25/2013 | CN103321606A Low-permeability fractured reservoir oil well water-plugging and screening method |
| 09/25/2013 | CN103321605A Downward striking type unblocking packer |
| 09/25/2013 | CN103321604A Packer with safety valve |
| 09/25/2013 | CN103321603A Crawling device and pawl crawling device thereof |
| 09/25/2013 | CN103321602A Wellhead assembly having a sinusoidal sealing profile and method to assemble the same |
| 09/25/2013 | CN103321601A Method and device for converting sealed media in under-pressure operating well |
| 09/25/2013 | CN103319752A Spiral packing |
| 09/25/2013 | CN102350724B Manufacturing method of artificial core with crevices for simulated leaking stoppage experiment |
| 09/24/2013 | US8540032 Apparatus and method with hydrocarbon swellable and water swellable body |
| 09/24/2013 | US8540025 Wellbore servicing compositions and methods of making and using same |
| 09/24/2013 | US8540018 Apparatus and method for recovering fluids from a well and/or injecting fluids into a well |
| 09/24/2013 | US8540017 Method and system for sealing a wellbore |
| 09/24/2013 | US8540016 Control and supply unit |
| 09/24/2013 | US8540015 Apparatus and method for treating a subterranean formation using diversion |
| 09/24/2013 | CA2777192C Method and apparatus for a packer assembly |
| 09/24/2013 | CA2713648C Energized composite metal to metal seal |
| 09/24/2013 | CA2700580C Gravel packing methods |
| 09/24/2013 | CA2674160C Plug for a perforated liner and method of using same |
| 09/24/2013 | CA2568593C Method and apparatus for performing chemical treatments of exposed geological formations |
| 09/23/2013 | CA2798343A1 Downhole isolation and depressurization tool |
| 09/21/2013 | CA2810045A1 Multizone frac system |
| 09/19/2013 | WO2013138092A2 Reduced cavitation oilfield choke |
| 09/19/2013 | WO2013137991A1 Actuation lockout system |
| 09/19/2013 | WO2013137861A1 Method and device for interfacing with subsea production equipment |
| 09/19/2013 | WO2013135415A1 Device for insulating a portion of a well |
| 09/19/2013 | WO2013049122A3 Ball valve float equipment |
| 09/19/2013 | WO2013002971A3 Blowout preventer seal assembly and method of using same |
| 09/19/2013 | WO2012177713A3 Subsea connector with an actuated latch cap assembly |
| 09/19/2013 | WO2012148839A3 Pressure relief valve |
| 09/19/2013 | WO2012142274A3 Systems and methods for capping a subsea well |
| 09/19/2013 | US20130240216 Bop lock down |
| 09/19/2013 | US20130240207 Cement retainer and squeeze technique |
| 09/19/2013 | US20130240203 Decomposable impediments for downhole tools and methods for using same |
| 09/19/2013 | US20130240202 Isolation device of part of a well |
| 09/19/2013 | US20130240201 Decomposable impediments for downhole plugs |
| 09/19/2013 | US20130240200 Decomposable pumpdown ball for downhole plugs |
| 09/19/2013 | CA2841797A1 Device for insulating a portion of a well |
| 09/18/2013 | EP2639400A1 Rotating control head radial seal protection and leak detection systems |
| 09/18/2013 | CN203201527U Deep drilling pressurizing hole sealing device |
| 09/18/2013 | CN203201526U Plugging device for artesian well |
| 09/18/2013 | CN203201525U Reinforcing pipe bridge type plugging pipe column for water injection well casing damage |
| 09/18/2013 | CN203201524U Self-balancing packer having diameter of 95mm and allowing cable to pass through |
| 09/18/2013 | CN203201523U Sucker rod blowout preventer for oil field well repair work |
| 09/18/2013 | CN203201522U Casing head body |
| 09/18/2013 | CN203201521U Anti-theft well plugging device |
| 09/18/2013 | CN203201520U High-pressure efficient fracture well head device |
| 09/18/2013 | CN203201519U Metal sealing device for wellhead tubing hanger |
| 09/18/2013 | CN203201518U Controllable tall and big four-way casing head well head equipment |
| 09/18/2013 | CN203201517U Metal polish rod sealer with automatic abrasion compensating function |
| 09/18/2013 | CN203201516U High-temperature sustainable sealing device for polished rod |
| 09/18/2013 | CN203201469U Integrated window-opening sidetracking tool |
| 09/18/2013 | CN103314176A Gate valve assembly |
| 09/18/2013 | CN103306715A Gas extraction drilling orifice device and operating method thereof |
| 09/18/2013 | CN103306713A Networking reinforcement method for cross drilling holes of outburst coal seam |
| 09/18/2013 | CN103306658A Stage-by-stage setting multi-stage segmental fracturing string and use method thereof |
| 09/18/2013 | CN103306645A Once drilling fracturing completion pipe string of horizontal well and drilling fracturing completion technology |
| 09/18/2013 | CN103306637A Method for realizing plugging by granulated stone filling and follow-up cementing on packer |
| 09/18/2013 | CN103306636A Well completion tube string and cementing method |
| 09/18/2013 | CN103306635A Rubber tube with steel frame |
| 09/18/2013 | CN103306634A Sliding-sleeve-type downhole blow-out preventer and application thereof |
| 09/18/2013 | CN103306633A Blowout control device for water detecting and draining drill hole |
| 09/18/2013 | CN103306632A All-metal sealing slip type casing head |
| 09/18/2013 | CN103306631A Wellhead penetration and changing leveling protection safety device |
| 09/18/2013 | CN103306630A Rapid oil well blowout preventer |
| 09/18/2013 | CN103306629A Oil tube suspender centering device |
| 09/18/2013 | CN103306628A Mechanical recovery wellhead boost protector |
| 09/18/2013 | CN103306627A Fracturing wellhead device |
| 09/18/2013 | CN103306626A Rotary throttling kill manifold capable of moving vertically and horizontally |
| 09/18/2013 | CN103306602A Hydraulic-expansion recyclable whipstock for directional drilling of underground coal mine and operation method thereof |
| 09/18/2013 | CN102182439B Balanced-pressure perforation/negative-pressure backflow process |
| 09/18/2013 | CN101994497B Cement slurry process for exploratory well cementation in oil and gas field areas |
| 09/18/2013 | CN101421486B Wellbore method and apparatus for sand and inflow control during well operations |