| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 01/15/2014 | CN203394374U Polished-rod centralizing device |
| 01/15/2014 | CN103518332A Subsea data communication system and method |
| 01/15/2014 | CN103510943A Instrument for measuring initial velocity of gas discharged from deep drill hole for coal mine outburst prediction |
| 01/15/2014 | CN103510913A Packer throttle valve head |
| 01/15/2014 | CN103510911A Shaft bottom leakage-proof plugging system and method for cementing well with same |
| 01/15/2014 | CN103510910A System and method for strength maintenance of high-temperature resistant and high-pressure resistant foam cement paste |
| 01/15/2014 | CN103510909A Packer anchor assembly |
| 01/15/2014 | CN103510908A Horn mouth tool |
| 01/15/2014 | CN103510907A Oil pipe plug |
| 01/15/2014 | CN103510906A Adjustable variable-differential-pressure constant-flow blanking plug |
| 01/15/2014 | CN103510905A Underground stratification testing sampling instrument variable-diameter packing structure |
| 01/15/2014 | CN103510904A Shaft bottom leakage-proof plugging device for well cementation |
| 01/15/2014 | CN103510895A Throw-salvage type stopper |
| 01/15/2014 | CN102660117B Resin material, composite well repair material and well repair process |
| 01/15/2014 | CN102482564B Compositions and methods for servicing subterranean wells |
| 01/15/2014 | CN102322237B Self-inflatable packer |
| 01/15/2014 | CN102268975B Water plugging construction process of emulsified heavy oil |
| 01/15/2014 | CN102061152B High-strength controllable gelout chemical temporary plugging liquid rubber stopper |
| 01/14/2014 | US8627894 Ring member for a swellable downhole packer |
| 01/14/2014 | US8627888 Settable compositions containing metakaolin having reduced portland cement content |
| 01/10/2014 | CA2820139A1 Swellable packer |
| 01/09/2014 | WO2014008421A1 Sealing mechanism for a subsea capping system |
| 01/09/2014 | WO2014007801A1 Packer assembly having sequentially operated hydrostatic pistons for interventionless setting |
| 01/09/2014 | WO2014007794A1 Packer assembly having dual hydrostatic pistons for redundant interventionless setting |
| 01/09/2014 | WO2014006392A2 Downhole tool |
| 01/09/2014 | WO2014006343A1 Device for covering a pipeline from a wellbore |
| 01/09/2014 | WO2014006149A2 Dynamic annular sealing apparatus |
| 01/09/2014 | WO2012140445A3 Subsea wellbore construction method and apparatus |
| 01/09/2014 | US20140008085 Well Barrier |
| 01/09/2014 | US20140008084 Multiple Activation-Device Launcher for A Cementing Head |
| 01/09/2014 | US20140008083 Remote Operation of Setting Tools for Liner Hangers |
| 01/09/2014 | US20140008077 Method and apparatus for evacuating hydrocarbons from a distressed well |
| 01/09/2014 | US20140008068 Bentonite collars for wellbore casings |
| 01/09/2014 | US20140008061 Packer Assembly With Sealing Bodies |
| 01/09/2014 | CA2877683A1 Packer assembly having dual hydrostatic pistons for redundant interventionless setting |
| 01/09/2014 | CA2877674A1 Packer assembly having sequentially operated hydrostatic pistons for interventionless setting |
| 01/08/2014 | EP2681410A2 Well plug and abandonment choke insert |
| 01/08/2014 | EP2681409A2 Metal chevron axial seal |
| 01/08/2014 | CN203383848U Hydraulic hole packer for coal seam water injection |
| 01/08/2014 | CN203383779U Turbulent flow leakage-proof cementing tool |
| 01/08/2014 | CN203383778U 活塞式自锁浮箍 Self-locking piston float collar |
| 01/08/2014 | CN203383777U Axial vibration impulse well cementing device |
| 01/08/2014 | CN203383776U Device for injecting gel during drilling |
| 01/08/2014 | CN203383775U Filling permanent-solidification type sleeve-outside packer |
| 01/08/2014 | CN203383774U Pressure shear ball seat and setting device |
| 01/08/2014 | CN203383773U Blanking plug allowing labor-saving salvage |
| 01/08/2014 | CN203383772U Packer with safety valve |
| 01/08/2014 | CN203383771U Test plug |
| 01/08/2014 | CN203383770U Novel positioning device for tubing hanger |
| 01/08/2014 | CN203383769U Casing anti-creeping device for casing heads |
| 01/08/2014 | CN203383768U Drilling orifice dust catching device |
| 01/08/2014 | CN203383767U Double annulus wedge type metal sealing device |
| 01/08/2014 | CN203383751U Toppling type hydraulic lifting spraying-resistant device |
| 01/08/2014 | CN103502565A Method and apparatus for sealing a wellbore |
| 01/08/2014 | CN103502564A Laser assisted riser disconnect and method of use |
| 01/08/2014 | CN103498656A Tongue-and-groove type multi-layer fracturing pipe column with equal drift diameters |
| 01/08/2014 | CN103498644A Outburst prevention method in rock cross-cut coal uncovering and gas outburst coal seam double-curtain grouting |
| 01/08/2014 | CN103498643A Composite slug deep water plugging method for oil pool with high water content |
| 01/08/2014 | CN102003158B Base tube expandable packer capable of secondarily expanding at time of meeting medium |
| 01/07/2014 | US8623936 Weighted elastomers, cement compositions comprising weighted elastomers, and methods of use |
| 01/07/2014 | US8623251 Extruded and configured lathe-cut packer elements |
| 01/07/2014 | US8622398 Annular seal |
| 01/07/2014 | US8622142 Sealing wellhead members with bi-metallic annular seal |
| 01/07/2014 | US8622139 Emergency subsea wellhead closure devices |
| 01/07/2014 | US8622138 Apparatus and method for recovering fluids from a well and/or injecting fluids into a well |
| 01/07/2014 | US8622131 Equipment for remote launching of cementing plugs |
| 01/07/2014 | US8622130 Method and apparatus for dropping a pump down plug or ball |
| 01/07/2014 | US8622121 Reinforced frac tubing head |
| 01/07/2014 | US8621979 Lubrication system for a reciprocating apparatus |
| 01/07/2014 | CA2635925C Cement blend |
| 01/03/2014 | WO2014004561A2 Method and apparatus for injecting gas into a reservoir |
| 01/03/2014 | WO2014004420A2 Fiber reinforced elastomer anisotropic annular blowout preventer |
| 01/03/2014 | WO2014003745A1 Mudline suspension metal-to-metal sealing system |
| 01/03/2014 | WO2014003601A1 Cap for submersible pump |
| 01/03/2014 | WO2012176173A3 Plug, and methods for setting and releasing the plug |
| 01/03/2014 | CA2877921A1 Mudline suspension metal-to-metal sealing system |
| 01/03/2014 | CA2877708A1 Method of using phthalic and terephthalic acids and derivatives thereof in well treatment operations |
| 01/03/2014 | CA2877129A1 Seal element guide |
| 01/02/2014 | US20140000905 Method and apparatus for injecting gas into a reservoir |
| 01/02/2014 | US20140000904 Power supply apparatus and method for providing backup power |
| 01/02/2014 | US20140000901 Bore selector |
| 01/02/2014 | US20140000892 Use of an Additive Compostion for Cementing Bore Wells |
| 01/02/2014 | US20140000869 Isolation assembly for inflow control device |
| 01/01/2014 | EP2678523A2 Subsea conductor anchor |
| 01/01/2014 | EP2678521A1 Laser assisted blowout preventer and methods of use |
| 01/01/2014 | EP2678520A1 Shear laser module and method of retrofitting and use |
| 01/01/2014 | EP2678519A1 Laser assisted riser disconnect and method of use |
| 01/01/2014 | EP2678518A1 Laser assisted system for controlling deep water drilling emergency situations |
| 01/01/2014 | CN203374262U Multilevel segmented fracturing string with setting achieved step by step |
| 01/01/2014 | CN203374238U Integrated dust squeezing bridge plug capable of being taken out |
| 01/01/2014 | CN203374237U External lock type sea underwater wellhead tie-back device |
| 01/01/2014 | CN203374236U Polish rod aligning device of pumping unit |
| 01/01/2014 | CN203374235U Velocity string well mouth sealing and hanging device |
| 01/01/2014 | CN203374230U Tool for quickly adding packing for rod-pumped well |
| 01/01/2014 | CN103492669A Shear laser module and method of retrofitting and use |
| 01/01/2014 | CN103492668A Laser assisted blowout preventer and methods of use |
| 01/01/2014 | CN103492667A Laser assisted system for controlling deep water drilling emergency situations |
| 01/01/2014 | CN103492666A Subsea well assembly and associated method |
| 01/01/2014 | CN103485754A Integrated underground hydraulic control fully-opened type sliding sleeve abrasive blasting and packing staged fracturing device |
| 01/01/2014 | CN103485747A Automatic pressure-adding borehole sealing device and method |