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)
11/2012
11/28/2012EP2527585A2 Packer for sealing against a wellbore wall
11/28/2012EP2526257A1 Downhole device actuator and method
11/28/2012EP2526256A1 Electrically triggered pressure set packer assembly
11/28/2012CN202560158U Drillable combined bridge plug
11/28/2012CN202560157U Grouting device
11/28/2012CN202560156U Hole sealing device for upward borehole grouting
11/28/2012CN202560155U Continuous oil pipe fracturing packer
11/28/2012CN202560154U Venting cable-penetrated packer
11/28/2012CN202560153U Bullet-shaped explosion device for solving brine seepage for salt well
11/28/2012CN202560152U Coal mine drilling blowout preventer
11/28/2012CN202560151U Oil well flashboard anti-spraying apparatus
11/28/2012CN202560150U Oil well mouth multistage back flow type blowout preventer
11/28/2012CN202560149U Full metal seal slip type sleeve head
11/28/2012CN202560148U Energy-saving lubricating device for oil pumping unit polish rod
11/28/2012CN202560147U Code anti-theft device of well mouth oil pipe
11/28/2012CN202560146U Lifting fixing clamp of pumping well mouth packing box
11/28/2012CN202560145U Self-sealing preventor for oil-water well
11/28/2012CN202560144U High-temperature-resistant wear-resistant centering combined packing
11/28/2012CN202560134U Special tool for exchanging pumping well head packing
11/28/2012CN102803645A Drilling system and method of operating a drilling system
11/28/2012CN102797433A Differential deep water blowout preventer control valve
11/28/2012CN102797430A Plugging device for water distributor
11/28/2012CN102797429A Suspending releasing sand preventing completion packer
11/28/2012CN101769139B Compressed self-sealed well-flushing packer
11/28/2012CN101608537B Multifunctional oil-extractor polish-rod double-aligning anti-theft mobile packing box
11/28/2012CN101506465B Controlling the pressure within an annular volume of a wellbore
11/28/2012CN101365860B Apparatus for gripping a tubular on a drilling rig
11/27/2012US8318642 Methods and compositions comprising kiln dust and metakaolin
11/27/2012US8316948 Actuation assembly for riser connection dog
11/27/2012US8316943 Methods and apparatus for a downhole tool
11/27/2012US8316940 Method of using sodium silicate in treatment of subterranean formation for water control
11/27/2012US8316936 Use of micro-electro-mechanical systems (MEMS) in well treatments
11/27/2012US8316931 Equipment for remote launching of cementing plugs
11/27/2012CA2713212C Method for treating oil and gas wells
11/27/2012CA2498304C Polypropylene cable jacket compositions with enhanced melt strength and physical properties
11/25/2012CA2777914A1 Packer for sealing against a wellbore wall
11/22/2012WO2012158575A2 Vortex controlled variable flow resistance device and related tools and methods
11/22/2012WO2012158044A1 Cutting device safety valve, method and uses for severing a pipe-string-related object in a safety valve for a well
11/22/2012WO2012156663A1 Settable compositions containing metakaolin having reduced portland cement content
11/22/2012WO2012155696A1 High-pressure resistant drilled hole sealing method
11/22/2012WO2012155197A1 Balanced piston setting tool
11/22/2012WO2012112673A3 Method and apparatus for protecting downhole components with inert atmosphere
11/22/2012WO2012109562A3 Flow control device and methods for using same
11/22/2012WO2012096738A3 Gravel packing in lateral wellbore
11/22/2012US20120292054 Offshore universal riser system
11/22/2012US20120292053 Easy Drill Slip with Degradable Materials
11/22/2012US20120292052 Easy Drill Slip
11/22/2012US20120292050 Dual Seal Tubing Hanger
11/22/2012US20120292046 Cement head
11/22/2012US20120292045 Downhole pump apparatus having decoupleable isolation plug
11/22/2012US20120292044 Telemetric chemical injection assembly
11/22/2012US20120292035 Tubing hanger setting confirmation system
11/22/2012US20120292032 Wellbore treatment apparatus and method
11/22/2012US20120292031 Hydraulic fracturing methods and well casing plugs
11/22/2012US20120292017 Vortex Controlled Variable Flow Resistance Device and Related Tools and Methods
11/22/2012US20120292015 Vortex Controlled Variable Flow Resistance Device and Related Tools and Methods
11/22/2012US20120292014 Packer Supported on Bonded Connection to a Surrounding Tubular
11/22/2012US20120292013 Inflatable Tool Set with Internally Generated Gas
11/22/2012CA2835638A1 Seal around braided cable
11/22/2012CA2835556A1 Settable compositions containing metakaolin having reduced portland cement content
11/22/2012CA2834927A1 Cutting device, safety valve, method and uses for severing a pipe-string-related object in a safety valve for a well
11/22/2012CA2834693A1 Tubular cutting with a sealed annular space and fluid flow for cuttings removal
11/22/2012CA2834071A1 Multi-position mechanical spear for multiple tension cuts while removing cuttings
11/22/2012CA2833767A1 Vortex controlled variable flow resistance device and related tools and methods
11/21/2012EP2524108A1 Internal blow out preventer
11/21/2012CN202544905U Retreating gas hole packer
11/21/2012CN202544904U Portable liquid filling machine of gas hole packer
11/21/2012CN202544903U Hole packer
11/21/2012CN202544883U Self-boring full thread hollow grouting anchor rod
11/21/2012CN202544824U Concentric double-pipe hierarchical injection pipe column
11/21/2012CN202544815U Exhaust string for deep-drawing process well
11/21/2012CN202544810U Drillable automatic grouting float collar
11/21/2012CN202544803U Well cementation car for oilfield or coalbed gas exploitation
11/21/2012CN202544802U High-thrust external casing packer with closing jackets
11/21/2012CN202544801U Assembled fluid-swelling packer
11/21/2012CN202544800U Uncased hole fracture packer of horizontal well
11/21/2012CN202544799U Blowout prevention device for safety drilling in coal bed
11/21/2012CN202544798U Inflatable splash-proof device for oil lifting pipe
11/21/2012CN202544797U Wellhead blowout preventer for thermal recovery horizontal well
11/21/2012CN202544796U Slip casing pipe head
11/21/2012CN202544795U Underground well opening back connecting device
11/21/2012CN202544794U Locking mechanism for fluid end valve box packing box
11/21/2012CN202544793U Guide vane device of downhole tool for gas recovery by liquid drainage by eddy
11/21/2012CN102787832A Intelligent profile control infection system
11/21/2012CN102787828A Method for integrating segregated completion and acid cleaning inflated packing of horizontal well
11/21/2012CN102787826A Magnetic float collar float shoe
11/21/2012CN102787825A Tool and method for cementing well and preventing channeling
11/21/2012CN102787824A Tool and method for injecting cement into top of horizontal well screen pipe without drilling and plugging
11/21/2012CN102787823A Downhole rotational flow shearing generator
11/21/2012CN102787822A Large-radian arched sealing rubber barrel
11/21/2012CN102787821A Plane arch-shaped seal rubber drum
11/21/2012CN102787820A Hole sealing and drilling method for downhole gas extraction in coal mine
11/21/2012CN102787819A Tire type puncture-proof eccentric packing box
11/21/2012CN102787810A Method for centering horizontal well cementing casing pipe
11/21/2012CN102786918A Water loss reducing composition, cement composition containing water loss reducing composition, and preparation method and use of water loss reducing composition
11/21/2012CN101881149B Heat injection drilling and sealing method of heating coalbed
11/21/2012CN101864923B Split type anchor suspension packer
11/21/2012CN101864922B Compression type dual-sealing open hole packer
11/21/2012CN101858202B Full-hydraulic multifunctional wellhead device
11/21/2012CN101660396B Compensating self-sealing blowout preventer
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