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)
05/2014
05/01/2014US20140116150 Methods for Determining Reactive Index for Cementitious Components, Associated Compositions, and Methods of Use
04/2014
04/30/2014EP2725187A1 Inwardly swelling seal
04/30/2014EP2723977A1 Interventionless set packer and setting method for same
04/30/2014EP2723976A1 An annular barrier with external seal
04/30/2014EP2723973A2 Plug, and methods for setting and releasing the plug
04/30/2014EP2723972A1 Fracturing port locator and isolation tool
04/30/2014CN203570261U Sliding block linkage drilling-free classification cement injector
04/30/2014CN203570260U Shaft device for simulating cementing
04/30/2014CN203570259U Anchoring packer
04/30/2014CN203570258U Ball stand for full drift diameter setting
04/30/2014CN203570257U Semi-closed full-closed integrated blowout preventer
04/30/2014CN203570256U Split type double-side sealed and semi-sealed flashboard
04/30/2014CN203570255U Compact and quick tubing hanger device
04/30/2014CN203570254U Fixing device for polished rod sealing device press cap of oil sucking well
04/30/2014CN203570253U Oil sucking well packing box moving positioning press cover
04/30/2014CN203570252U Side lug hood of well plugging device
04/30/2014CN203570251U Heavy oil well wellhead leakproof device
04/30/2014CN203570250U High-temperature and high-pressure integrated polish rod sealer
04/30/2014CN203570234U Hollow sleeve seal type orifice dust extractor and hollow sleeve seal device thereof
04/30/2014CN103764944A A method of conditioning a wall of a bore section
04/30/2014CN103764943A Annular barrier with safety metal sleeve
04/30/2014CN103764942A Annular barrier with axial force mechanism
04/30/2014CN103764941A Improved blowout preventer
04/30/2014CN103758494A Horizontal well external staged fracturing sand control string and method
04/30/2014CN103758486A Pipeless grouting hole sealing device
04/30/2014CN103758485A Equipment system for adding drawing accelerator to karst fissures in subsidence area
04/30/2014CN103758484A Multi-stage hole collapse prevention construction device for gas extraction holes in soft coal growing area
04/30/2014CN103758483A Secondary hole sealing method for treating broken area after extraction of crossing hole
04/30/2014CN103758482A Universal random deviation rectification outside injected magnetic fluid polished rod sealing device
04/30/2014CN103758481A Hierarchical-depressurizing oil nozzle manifold
04/30/2014CN103758480A Oil-water well wellhead protective cap
04/30/2014CN103756658A Automatic melting temporary plugging agent composition for oil-water well acidification in oil field
04/30/2014CN102678043B Method for constructing flow plastic interlayer by adjusting hole drill
04/30/2014CN102561978B Long-stroke no-killing well working device of oil-water well
04/30/2014CN102128015B Ash sledge assembling process
04/30/2014CN102027189B Method and system for anchoring and isolating wellbore
04/30/2014CA2829928A1 Coiled tubing packer system
04/29/2014US8708307 Elongated trunnion for high pressure ball valves
04/29/2014US8708056 External casing packer and method of performing cementing job
04/29/2014US8708044 Process for consolidating sand
04/29/2014US8708043 Methods and multi-purpose apparatus for dispensing and circulating fluid in wellbore casing
04/29/2014CA2831586A1 Production string activated wellbore sealing apparatus and method for sealing a wellbore using a production string
04/29/2014CA2783389C Anti-channeling pack-off particles used in a production section of an oil-gas well, and completion method and production method using such particles
04/29/2014CA2698916C Subsea valve
04/29/2014CA2639418C Pump assembly
04/29/2014CA2581581C Direct connecting downhole control system
04/26/2014CA2830621A1 Inwardly swelling seal
04/24/2014WO2014062806A1 Telescoping latching mechanism for casing cementing plug
04/24/2014WO2014062546A2 Downhole system and method for facilitating remedial work
04/24/2014WO2014062408A1 Fast-setting cements for well abandonment
04/24/2014WO2014062391A1 Controlled swell-rate swellable packer and method
04/24/2014WO2014062326A1 Invert emulsion with encapsulated breaker for well treatment
04/24/2014WO2014062200A1 Multi-layered temperature responsive pressure isolation device
04/24/2014WO2014060293A2 Sealing apparatus and method
04/24/2014WO2014011549A4 Insulating annular fluid
04/24/2014US20140110611 Blowout preventer seal assembly and method of using same
04/24/2014US20140110610 Advanced Blow-out Preventer
04/24/2014US20140110126 Hard Stop Energizing Ring
04/24/2014US20140110125 Subsea wellhead stabilization using cylindrical sockets
04/24/2014US20140110119 Wellbore fluid used with swellable elements
04/24/2014US20140110115 Gelling Agents and Methods of Using the Same
04/24/2014US20140110114 Methods for Maintaining Zonal Isolation in A Subterranean Well
04/24/2014US20140110113 Crosslinkable Water Soluble Compositions And Methods Of Using The Same
04/24/2014US20140110112 Erodable Bridge Plug in Fracturing Applications
04/24/2014US20140110107 Enhanced geothermal systems and reservoir optimization
04/24/2014US20140110100 Combination swivel and ball dropper
04/24/2014US20140110099 Molded well head cover
04/24/2014CA2829272A1 Inclusion propagation by casing expansion giving rise to formation dilation and extension
04/23/2014EP2722948A1 Support apparatus for interconnected components
04/23/2014EP2721246A2 Diverter system for a subsea well
04/23/2014CN203560730U Grease filling device special for filling grease into Christmas tree
04/23/2014CN203559864U Quick drilling combined bridge plug for fracturing use
04/23/2014CN203559863U Hydraulic oil pipe bridge plug
04/23/2014CN203559862U One-way sealing device for underground gas storage well shaft
04/23/2014CN203559861U Well cementing additive adding device
04/23/2014CN203559860U Durable rubber tube of packer
04/23/2014CN203559859U Packer structure
04/23/2014CN203559858U Expanding type packer
04/23/2014CN203559857U Blocking device for underwater Christmas tree
04/23/2014CN203559856U Water seal jacket structure
04/23/2014CN203559855U Ram opening counter
04/23/2014CN203559854U Blowout prevention cylinder
04/23/2014CN203559853U Blowout preventer for oil field equipment
04/23/2014CN203559809U Deviation-adjusting and centering device for adding packing into pumping well and taking packing out of pumping well
04/23/2014CN103748315A Cement head with hammer union
04/23/2014CN103742145A Water control method for abnormal water-enriched region of coal mine
04/23/2014CN103742129A Method for drilling holes on soft coal seam to measure coal seam gas pressure
04/23/2014CN103742115A Underground coal mine fracture sealing device and method
04/23/2014CN103742104A Hole packer
04/23/2014CN103742103A Double guide rod coercing reset type float collar
04/23/2014CN103742102A Preset packer and packing and fishing tool
04/23/2014CN103742101A Process for sealing ground layer by casing pipes
04/23/2014CN103742100A Packer applicable to environment of 120 DEG C and 70 MPa
04/23/2014CN103742099A Perforation, fracturing, sealing and separating device
04/23/2014CN103742098A Device and method for sealing hole by using returned slag of layer-through drill hole of low drainage roadway of coal mine
04/23/2014CN103742097A Hydraulic switch control device for wellhead blowout preventer
04/23/2014CN103742096A Coal bed gas water draining tubular column blowout preventer without pressing well
04/23/2014CN103742092A Expansion pipe completing tool
04/22/2014US8703659 Sealant composition comprising a gel system and a reduced amount of cement for a permeable zone downhole
04/22/2014US8703657 Inverse emulsion polymers as lost circulation material
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