| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 07/04/2012 | CN202300283U 油井喷时抽油杆悬挂装置 When oil blowout rod suspension |
| 07/04/2012 | CN202300282U 采油树紧固螺栓防护圈 Christmas tree fastening bolts protective circle |
| 07/04/2012 | CN202300281U 一种光杆密封器 A light bar sealer |
| 07/04/2012 | CN202300280U 一种远程控制油嘴管汇 Remote Control Operation choke manifold |
| 07/04/2012 | CN202300279U 一种机动采油剪切防盗封井装置 An automotive oil shear plugging device theft |
| 07/04/2012 | CN202300278U 油田井口用盘根密封装置 Oilfield wellhead seal with packing |
| 07/04/2012 | CN202300277U 自动调偏井口密封器 Partial Wellhead auto sealer |
| 07/04/2012 | CN202300276U 软管随动调偏光杆密封器 Hose follower rod seal tune polarizing filter |
| 07/04/2012 | CN202300275U 井口的金属密封结构 Metal sealing wellhead structure |
| 07/04/2012 | CN202300274U 一种组合式三通 A modular three-way |
| 07/04/2012 | CN202300273U 一种液体回收器 A liquid collector |
| 07/04/2012 | CN202300226U 新型石油套管接箍 The new oil casing collar |
| 07/04/2012 | CN202300221U 裸眼水平井控水采油管柱 Openhole horizontal well production string and water control |
| 07/04/2012 | CN1748072B Actuator for well-head valve or other similar applications and system incorporating same |
| 07/04/2012 | CN102549233A Metal seal |
| 07/04/2012 | CN102539134A Circuit functional test system and method |
| 07/04/2012 | CN102539078A Split-type repeatable testing device |
| 07/04/2012 | CN102536210A Direct-reading and testing integrated machine for downhole parameters of vertical well and horizontal well of oil field |
| 07/04/2012 | CN102536202A Test piece for testing gas storage well completion sleeve-cement ring bonding strength and method for manufacturing test piece |
| 07/04/2012 | CN102536185A Multi-stage draggable water-jet packer tubular column and technology |
| 07/04/2012 | CN102536160A Ball seat type rubber plug system for liner cementing |
| 07/04/2012 | CN102536159A Mining gas sealing ejector |
| 07/04/2012 | CN102536158A Uphole sealing method |
| 07/04/2012 | CN102536157A Packer for intelligent well completion |
| 07/04/2012 | CN102536156A High-voltage packer for measuring ground stress of deep hole and method for manufacturing rubber sleeve of packer |
| 07/04/2012 | CN102536155A Long-rubber-barrel high-pressure water injection packer |
| 07/04/2012 | CN102536154A Intelligent water-plugging production-increasing device for production well and control method thereof |
| 07/04/2012 | CN102536153A Manpower supercharged powder conveying device for mine |
| 07/04/2012 | CN102536152A Underground digital intelligent water shutoff system of water injection well |
| 07/04/2012 | CN102536151A Subsea wellhead keyless anti-rotation device |
| 07/04/2012 | CN102536150A Emergency subsea wellhead closure devices |
| 07/04/2012 | CN102536149A Hydraulic control well plugging device |
| 07/04/2012 | CN102536148A Seal with enhanced nose ring |
| 07/04/2012 | CN102536147A Extrusion-injection releasable socket |
| 07/04/2012 | CN101566054B Primary gravel packing tool for heat recovery |
| 07/04/2012 | CN101560875B Multifunctional horizontal well completion tubular pile device |
| 07/04/2012 | CN101351607B Anchoring system for posts |
| 07/04/2012 | CN101324178B Casing tube heightening well head safety compensation apparatus |
| 07/03/2012 | US8210281 Method and system for installing geothermal transfer apparatuses with a sonic drill |
| 07/03/2012 | US8210261 Method of well treatment and construction |
| 07/03/2012 | CA2668909C Methods for controlling particulate migration |
| 07/03/2012 | CA2560939C Process for disruption of filter cakes |
| 06/28/2012 | WO2012088004A2 Cmp pad conditioning tool |
| 06/28/2012 | WO2012084889A1 Method of providing an annular seal, and wellbore system |
| 06/28/2012 | WO2012084888A1 System and method for providing a pressure seal |
| 06/28/2012 | WO2012084887A1 System and method for sealing a space in a wellbore |
| 06/28/2012 | WO2012083991A1 Expandable packer |
| 06/28/2012 | WO2012083990A1 Expandable packer |
| 06/28/2012 | WO2012058541A3 Well emergency separation tool for use in separating a tubular element |
| 06/28/2012 | WO2012058290A3 Surface multiple well |
| 06/28/2012 | WO2012054865A3 System and method related to a sampling packer |
| 06/28/2012 | WO2012037248A3 Casing friendly, shearable hardbands and systems and methods for shearing same |
| 06/28/2012 | WO2012034181A8 Drill hole plugs |
| 06/28/2012 | WO2012007407A3 Blowout preventer and launcher system |
| 06/28/2012 | WO2011110819A3 Seal assembly and method of forming a seal assembly |
| 06/28/2012 | US20120160524 Completion assembly and a method for stimulating, segmenting and controlling erd wells |
| 06/28/2012 | US20120160523 Downhole packer tool with safety systems for preventing undue set and release operations |
| 06/28/2012 | US20120160522 Downhole packer tool with dummy slips |
| 06/28/2012 | US20120160521 Interventionless set packer and setting method for same |
| 06/28/2012 | US20120160520 Completion assembly for stimulating, segmenting and controlling erd wells |
| 06/28/2012 | US20120160519 Triggered polymer viscous pill and methods of using the same |
| 06/28/2012 | US20120160512 Wellhead tree pressure limiting device |
| 06/28/2012 | US20120160507 Apparatus and method for recovering fluids from a well and/or injecting fluids into a well |
| 06/28/2012 | US20120160490 Use of Seeds as a Cement Set Retarder |
| 06/28/2012 | US20120160489 Cement slurry with low water-to-cement ratio |
| 06/28/2012 | US20120160488 Method and apparatus for pressure testing a tubular body |
| 06/28/2012 | US20120160482 Damper Cartridge For Launching Plugs In Cementing Operations |
| 06/28/2012 | US20120160475 Downhole packer tool with antifracture means |
| 06/28/2012 | CA2821986A1 Nucleation process and in situ growth of nanometric calcium silicate-based crystals in cement materials, calcium silicate-based nanometric crystals, use of crystals and use of glycerin |
| 06/27/2012 | EP2469017A1 System and method for providing a pressure seal |
| 06/27/2012 | EP2469016A1 System and method for sealing a space in a wellbore |
| 06/27/2012 | EP2469015A1 Prognostics of well data |
| 06/27/2012 | EP2467565A2 Pressure control device |
| 06/27/2012 | CN202284461U 一种捞油剪切封堵卡紧多功能装置 One kind of fishing oil shear block clamping multifunction device |
| 06/27/2012 | CN202284460U 一种抢喷变径法兰 One kind of grab spray adjustable flange |
| 06/27/2012 | CN202284459U 一种油井井口旋转密封装置 One kind of rotating seal wellhead |
| 06/27/2012 | CN202284453U 一种液压胀开式套管扶正短节 A hydraulic expansion of a short section of casing centralizers open |
| 06/27/2012 | CN1860284B Expandable wellbore assembly |
| 06/27/2012 | CN102518432A Test device capable of simulating plugging of high temperature and high pressure dropping strata |
| 06/27/2012 | CN102518408A Telescopic decompression type steam injection packer |
| 06/27/2012 | CN102518397A Tension mooring type underwater drilling system and mounting method for same |
| 06/27/2012 | CN102516962A Hole sealing material of potassium-magnesium salt mine drilling holes and hole sealing method thereof |
| 06/27/2012 | CN102516960A Micro-suspension self-selection water shutoff and profile control agent and application method thereof |
| 06/27/2012 | CN102516959A Magnetorheological isolating liquid and application thereof |
| 06/27/2012 | CN102041970B Protection device for separate stratum fracturing of continuous oil pipe |
| 06/27/2012 | CN101699023B High temperature-resistance external casing packer |
| 06/27/2012 | CN101575940B Drilling operation method by utilizing dual drill drilling system |
| 06/27/2012 | CN101346530B Controlling pressure and static charge within a wellbore |
| 06/27/2012 | CN101343993B Demixing injection-production column jacket segmenting obstruction pressed operation technique and apparatus |
| 06/27/2012 | CN101307679B Thin interlayer steam injection thermal production well mixing-proof well completion process |
| 06/27/2012 | CN101260790B Wellhead heat insulation and heating equipment for well workover |
| 06/27/2012 | CN101080548B A method and a device for sealing a void incompletely filled with a cast material |
| 06/26/2012 | US8207096 Compressible packer fluids and methods of making and using same |
| 06/26/2012 | US8205890 Resilient high pressure metal-to-metal seal and method |
| 06/26/2012 | US8205677 System and method for controlling underwater oil-well leak |
| 06/26/2012 | US8205671 Downhole bridge plug or packer assemblies |
| 06/26/2012 | CA2658472C Plug and related methods for isolating open perforations in horizontal wellbores using ultra lightweight proppant and soluble material |
| 06/26/2012 | CA2603165C System and method for creating packers in a wellbore |
| 06/21/2012 | WO2012083180A2 "packer assembly with sealing bodies" |
| 06/21/2012 | WO2012082962A1 High temperature temporary diverter and lost circulation material |