Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 33 - Sealing or packing boreholes or wells
Patents for E21B 33 - Sealing or packing boreholes or wells (33,564)
03/2012
03/28/2012CN102395753A Open hole frac system
03/28/2012CN102392626A Method for exploiting thick-layer heavy oil reservoir by in situ combustion assisted gravity drainage
03/28/2012CN102392616A Microcomputer controlled packer
03/28/2012CN102392615A Oil tube tieback inserting sealing device
03/28/2012CN102392614A Wellhead pressure suction assembly
03/28/2012CN102391553A Fluorinated Elastomeric Blowout Preventer Packers And Method
03/28/2012CA2752928A1 Novel weight materials for use in cement, spacer and drilling fluids
03/28/2012CA2752398A1 Friction bite with swellable elastomer elements
03/27/2012USRE43262 Retaining apparatus for use in a wellhead assembly and method for using the same
03/27/2012US8143198 Radiation-induced triggering for set-on-command compositions
03/27/2012US8143196 Ceramic microspheres for cementing applications
03/27/2012US8141880 High pressure sealing apparatus
03/27/2012US8141638 Fracturing method and apparatus utilizing gelled isolation fluid
03/27/2012US8141637 Manipulation of flow underground
03/27/2012US8141626 Packer-anchoring device
03/27/2012CA2667347C Liner anchor for expandable casing strings
03/27/2012CA2617743C Modular backup fluid supply system
03/27/2012CA2513561C Cement compositions containing flexible, compressible beads and methods of cementing in subterranean formations
03/24/2012CA2752345A1 Universal backup for swellable packers
03/22/2012WO2012037521A1 Multi-purpose fill and circulate well tool
03/22/2012WO2012037248A2 Casing friendly, shearable hardbands and systems and methods for shearing same
03/22/2012WO2012037173A2 Blowout preventer ram assembly and method of using same
03/22/2012WO2012037130A1 Pump down liner expansion method
03/22/2012WO2012036917A2 Self-releasing plug for use in a subterranean well
03/22/2012WO2012036773A1 Downhole tool seal arrangement and method of sealing a downhole tubular
03/22/2012WO2012034227A1 Improved blowout preventer with port for entry between casing and tubing string and/or port for entry into tubing string
03/22/2012WO2012034181A1 Drill hole plugs
03/22/2012US20120067597 Wellhead seal device to seal casing
03/22/2012US20120067596 Retrievable bridge plug
03/22/2012US20120067595 Remotely operated isolation valve
03/22/2012US20120067577 Magnetically Controlled Delivery of Subterranean Fluid Additives for Use in Subterranean Applications
03/22/2012US20120067565 Swellable packer with enhanced sealing capability
03/22/2012US20120067564 Packer Deployment with Electric Submersible Pump with Optional Retention of the Packer After Pump Removal
03/22/2012US20120067563 Casing friendly, shearable hardbands and systems and methods for shearing same
03/22/2012DE102010036411B4 Verfahren zur Hinterfüllung eines Bohrlochs und Anordnung dafür Method for backfill of a borehole and arrangement therefor
03/22/2012CA2812692A1 Improved blowout preventer with port for entry between casing and tubing string and/or port for entry into tubing string
03/22/2012CA2812138A1 Self-releasing plug for use in a subterranean well
03/22/2012CA2811514A1 Casing friendly, shearable hardbands and systems and methods for shearing same
03/22/2012CA2810435A1 Blowout preventer ram assembly and method of using same
03/22/2012CA2809690A1 Drill hole plugs
03/22/2012CA2808136A1 Multi-purpose fill and circulate well tool
03/22/2012CA2752931A1 Wellhead seal device to seal casing
03/21/2012EP2431564A1 Method for drilling and completing wells
03/21/2012EP2430287A2 Fracturing with telescoping members and sealing the annular space
03/21/2012EP2430286A2 System and method for enhancing packer operation and longevity
03/21/2012EP2430285A2 Subsea winch
03/21/2012EP2430283A2 Subsea overload release system and method
03/21/2012EP2176505B1 Winch assembly
03/21/2012CN202170788U 厚储层层内分段压裂工艺管柱 Thick layers of segments within the reservoir fracturing string
03/21/2012CN202170778U 可回流均压超长注浆管 Reflow equalizing long grouting pipe
03/21/2012CN202170777U 锥阀式井口防喷器 Poppet type wellhead blowout preventer
03/21/2012CN202170776U 一种压入式密封机构 A press-on sealing mechanism
03/21/2012CN202170775U 水下泥线套管悬挂用弹性承载定位装置 Underwater mud line suspension with an elastic sleeve bearing positioning device
03/21/2012CN202170774U 卡块式快速连接装置 Card Block Quick Connect
03/21/2012CN202170773U 泄油丝堵 Drain plugs
03/21/2012CN202170771U 螺杆泵防转不压井管柱 Screw anti-rotation snubbing string
03/21/2012CN202169874U 一种固井水泥车上下共用动力系统 A cementing cement board under a common power system
03/21/2012CN102388199A Subsea wellhead assembly
03/21/2012CN102383773A Method for exploiting coal bed gas by physical regional pressure relief
03/21/2012CN102383767A Mountable backing and sand prevention throttle used under well
03/21/2012CN102383764A Sand-blocking-preventing oil-extraction production tubular column
03/21/2012CN102383759A Multifunctional blowout preventer specially used for steam-driven well
03/21/2012CN102383758A Guide base wellhead locking device of underwater Christmas tree
03/21/2012CN102383757A Connection device for underwater production tree cup
03/21/2012CN102383756A Top packer for subsea Christmas tree
03/21/2012CN102383755A Valve condition monitoring
03/21/2012CN102383754A Maneuvering oil production shearing antitheft well plugging device
03/21/2012CN101487384B Method for oil well water-shutoff by utilizing scleroglucan fermentation liquor
03/20/2012US8138128 Radiation-induced thickening for set-on-command sealant compositions
03/20/2012US8136605 Swellable packer with fluid supply
03/20/2012US8136604 Wireline run fracture isolation sleeve and plug and method of operating same
03/20/2012US8136602 Method and apparatus for sealing and venting pressurized casings of gas wells
03/20/2012US8136600 Vertical annular separation and pumping system with integrated pump shroud and baffle
03/20/2012US8136598 Subsea connection apparatus for a surface blowout preventer stack
03/20/2012US8136595 Methods for controlling particulate flowback and migration in a subterranean formation
03/20/2012US8136594 Methods and apparatuses for releasing a chemical into a well bore upon command
03/20/2012US8136593 Methods for maintaining conductivity of proppant pack
03/20/2012US8136588 Downhole tool and running tool system for retrievably setting a downhole tool at locations within a well bore
03/20/2012US8136585 Radial ball injecting apparatus for wellbore operations
03/20/2012US8136216 Method of coupling expandable tubing sections
03/20/2012CA2643033C Packer cup
03/20/2012CA2609178C Expandable bridge plug and setting assembly
03/20/2012CA2566780C Polymeric composites, oilfield elements comprising same, and methods of using same in oilfield applications
03/20/2012CA2565332C Methods for controlling particulate migration
03/20/2012CA2524977C Self adaptive cement systems
03/20/2012CA2524514C Self adaptive cement systems
03/20/2012CA2521523C Downhole polymer plug and liner and methods employing same
03/20/2012CA2503113C Method and apparatus for isolating and testing zones during reverse circulation drilling
03/20/2012CA2467903C Self sealing expandable inflatable packers
03/20/2012CA2466859C Packer with metal sealing element
03/15/2012US20120061105 Single piece packer extrusion limiter ring
03/15/2012US20120061104 Downhole tool seal arrangement and method of sealing a downhole tubular
03/15/2012US20120061103 Multiple ball- ball seat for hydraulic fracturing with reduced pumping pressure
03/15/2012US20120061102 Anhydrous boron-based timed delay plugs
03/15/2012US20120061078 Cement as anchor for expandable tubing
03/15/2012US20120061072 Methods and apparatuses for releasing a chemical into a well bore upon command
03/14/2012EP2428640A2 Systems and methods for using rock debris to inhibit the initiation or propagation of fractures within a passageway through subterranean strata
03/14/2012EP2427630A1 Sliding sleeve sub and method and apparatus for wellbore fluid treatment
03/14/2012EP2329103B1 Sand control screen assembly and method for use of same
03/14/2012EP1218621B1 Method and plugging material for reducing formation fluid migration in wells
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