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)
12/2008
12/03/2008EP1996790A1 Mounts for blowout preventer bonnets
12/03/2008EP1805391B1 Downhole swellable seal
12/03/2008CN201159080Y Safety information data collection device of blowout preventer
12/03/2008CN201159065Y Blowout prevention air deflector
12/03/2008CN201159064Y Minor diameter expanding type washable well zonal injection packer
12/03/2008CN201159063Y Novel simple casing head
12/03/2008CN201159062Y Multifunctional shaft mouth cleaning device of oil pumping machine
12/03/2008CN101316981A Packer cups for use inside a wellbore
12/03/2008CN101315024A Jackrod one-way pump injection type sealing/sealing releasing device for hole-inside base
12/02/2008US7458424 Tight formation water shut off method with silica gel
12/02/2008US7458423 Method of sealing an annulus surrounding a slotted liner
12/02/2008US7458422 One trip cemented expandable monobore liner system and method
12/02/2008CA2537585C Smart-control plc based touch screen driven remote control panel for bop control unit
11/2008
11/30/2008CA2632386A1 Cementing manifold with canister fed dart and ball release system
11/27/2008WO2008143986A1 Well plunger and plunger seal for a plunger lift pumping system
11/27/2008WO2008088553A3 Metal to metal seal for downhole tools
11/27/2008WO2008084162A3 Controllably-deformable inflatable sleeve, production method thereof and use of same for pressure metering applications
11/27/2008WO2004085790A3 Apparatus for radially expanding and plastically deforming a tubular member
11/27/2008US20080290603 Swellable material and method
11/27/2008US20080290602 Self energizing seal element
11/27/2008US20080289878 Downhole blowout preventor
11/27/2008US20080289826 Downhole Slurry Method For Primary Cementing A Well
11/27/2008US20080289825 Downhole Mixing Of Encapsulated Plug Components For Primary Cementing A Well
11/27/2008US20080289824 Primary Well Cementing With Downhole Mixed Epoxy
11/27/2008US20080289823 Degradable Material Assisted Diversion or Isolation
11/27/2008US20080289813 Polished bore receptacle
11/27/2008US20080289812 System for downhole packing
11/27/2008US20080289408 Methods and systems for investigating downhole conditions
11/27/2008CA2686270A1 Method and apparatus for dropping a pump down plug or ball
11/26/2008EP1608839B1 Method and apparatus to complete a well having tubing inserted through a valve
11/26/2008CN201155320Y High-temperature high pressure removable bridge plug
11/26/2008CN201155319Y Packer capable of adhibiting and descaling
11/26/2008CN201155318Y Bore rod inner packer
11/26/2008CN201155317Y Thermal expansion type packer
11/26/2008CN201155316Y Simple casing head
11/26/2008CN201155315Y Riser pipe sealing device for offshore drilling
11/26/2008CN201155314Y Antitheft well head cap
11/26/2008CN201155313Y Embedded anti-theft plug
11/26/2008CN201155312Y Wellhead protecting housing for groundwater monitoring
11/26/2008CN201155311Y Under balance drilling rotating control device
11/26/2008CN201155310Y Under balance drilling rotating control device sealing body
11/26/2008CN201155309Y Under balance drilling rotating control assembly housing
11/26/2008CN100436904C Valve system and method
11/26/2008CN100436752C High expansion anchor system
11/25/2008US7455118 Secondary lock for a downhole tool
11/25/2008US7455117 Downhole winding tool
11/23/2008CA2603715A1 Method and apparatus for re-entering an abandoned well
11/20/2008WO2008140919A2 Stormwater filter assembly
11/20/2008WO2008140888A1 Method and apparatus for controlling elastomer swelling in downhole applications
11/20/2008WO2008140856A1 Wellhead component coupling system and method
11/20/2008US20080283244 Method and apparatus for dropping a pump down plug or ball
11/20/2008US20080283236 Well plunger and plunger seal for a plunger lift pumping system
11/20/2008CA2692592A1 Method and apparatus for controlling elastomer swelling in downhole applications
11/20/2008CA2686450A1 Stormwater filter assembly
11/20/2008CA2685385A1 Wellhead component coupling system and method
11/19/2008EP1991757A2 System for injecting a substance into the space surrounding a well tubular
11/19/2008EP1781889B1 Improvements in or relating to subsea drilling
11/19/2008EP1730383A4 Spear type blow out preventer
11/19/2008CN201152172Y Wellhead equipment pressure test pump set automatic control system
11/19/2008CN201152163Y Sieve tube semi-cementing well stage collar
11/19/2008CN201152162Y Semi-cementing well circulative packer
11/19/2008CN201152161Y Outer pipe packer for cementing absorption well
11/19/2008CN201152160Y Horizontal well fracturing hydraulic seat packer
11/19/2008CN201152159Y Oil-extracting well head attemperator
11/19/2008CN101307695A Coal mine gas pre-draining borehole sealing method adopting aerated capsule as temporary hole bottom
11/19/2008CN101307679A Thin interlayer steam injection thermal production well mixing-proof well completion process
11/18/2008US7451821 Blow out preventer transfer platform
11/18/2008US7451817 Methods of using casing strings in subterranean cementing operations
11/18/2008CA2542038C Cup tool with three-part packoff for a high pressure mandrel
11/18/2008CA2490128C Rotating drilling head drive
11/18/2008CA2459538C Method for creating a polished bore receptacle
11/18/2008CA2407069C Compression set packer
11/13/2008WO2008135356A1 Method for casing using multiple expanded areas and using at least one inflatable bladder
11/13/2008WO2008135167A2 Method and apparatus for measuring a parameter within the well with a plug
11/13/2008WO2008100408A3 Method and apparatus for sub-sea processing
11/13/2008WO2008033714A3 Forming a metal-to-metal seal in a well
11/13/2008US20080277880 Connector Assembly
11/13/2008US20080277122 Apparatus and a Method For Deployment of a Well Intervention Tool String Into a Subsea Well
11/13/2008US20080277117 Surfaced mixed epoxy method for abandoning well
11/13/2008US20080277116 Well Treatment Compositions and Methods Utilizing Nano-Particles
11/13/2008US20080277110 Hydraulic open hole packer
11/13/2008US20080277109 Method and apparatus for controlling elastomer swelling in downhole applications
11/13/2008CA2693433A1 A method and apparatus for subterranean fracturing
11/13/2008CA2684911A1 Method and apparatus for measuring a parameter within the well with a plug
11/12/2008EP1990505A1 Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
11/12/2008CN201148859Y Hole opening differential pressure type stage cementing device
11/12/2008CN201148858Y Sliding type anti-clip packer
11/12/2008CN201148857Y Packer
11/12/2008CN201148856Y Mechanical type down-hole closing device
11/12/2008CN201148855Y Well head device for extracting oil
11/12/2008CN201148854Y Natural gas anti-theft equipment
11/12/2008CN201148843Y Releasing type water block pipe pillar capable of heat washing to protect oil layer
11/12/2008CN101302926A Method and apparatus for controlling elastomer swelling in downhole applications
11/12/2008CN101302925A Quick plugging device
11/12/2008CN101302922A Construction method of horizontal orienting drill crossing sand cobble and gravel formation
11/11/2008US7449664 Oil and gas well alloy squeezing method and apparatus
11/11/2008US7449431 Well bore fluid mixture of oil additive, solid colloidal particles coated with dispersants; barite coated with stearyl methacrylate, butyl acrylate; suspnesion stability; drilling fluids
11/11/2008US7448454 Method and system for return of drilling fluid from a sealed marine riser to a floating drilling rig while drilling
11/11/2008US7448451 Pre-flushing with hydrocarbon, then placing low-viscosity adhesive substance diluted with aqueous dissolvable solvent into portion of subterranean formation; tackifier resins; phenol-formaldehyde resins; well bores
11/11/2008US7448450 Comprises chabazite; well bores
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