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)
10/2008
10/16/2008CA2682769A1 Method and composition for zonal isolation of a well
10/15/2008EP1315883B8 Well packing
10/15/2008CN201133233Y Wellhead safe automatic cutting device
10/15/2008CN201133232Y By-pass type lower flange for testing well head
10/15/2008CN201133231Y Wellhead blowout preventer anti-theft device
10/15/2008CN201133230Y Open type cable hydraulic blowout preventer
10/15/2008CN201133229Y Combination type packing kit
10/15/2008CN201133228Y Well head device for well production
10/15/2008CN201133227Y Automatic spray-proof polish rod sealer
10/15/2008CN201133226Y Ground oil conduit valve type hermetic inverse flow device
10/15/2008CN101285376A Method for solving leakage of oil well cementing squeezing off
10/15/2008CN100425798C Technique of mine flyash making thick liquid, delivering and injecting thick liquid
10/15/2008CN100425797C Control system of well mouth release valve
10/14/2008US7434627 Method and apparatus for friction reduction in a downhole tool
10/14/2008US7434625 Downhole flapper circulation tool
10/14/2008US7434623 Percussion tool and method
10/14/2008US7434618 Apparatus for expanding a tubular member
10/14/2008US7434617 Cup tool with three-part packoff for a high pressure mandrel
10/14/2008CA2515616C Convertible rotary seal for progressing cavity pump drivehead
10/14/2008CA2497631C Method and apparatus for locating and re-entering one or more horizontal wells using whipstocks
10/14/2008CA2496161C High expansion anchor system
10/14/2008CA2338416C Bore hole grouting apparatus and method
10/14/2008CA2296108C Actuation system for a downhole tool
10/09/2008WO2008121653A2 Packer setting device for high-hydrostatic applications
10/09/2008WO2008120025A2 Rotating control device docking station
10/09/2008WO2008119931A1 Ball seat assembly and method of controlling fluid flow through a hollow body
10/09/2008WO2008100810A3 Silicate-based wellbore fluid and methods for stabilizing unconsolidated formations
10/09/2008WO2008085670A3 Method of isolating and completing multi-zone frac packs
10/09/2008US20080248978 Injecting an aqueous viscoelastic treating fluid of brine, a viscoelastic surfactant, and a viscosity enhancer of pyroelectric particles, piezoelectric particles; forming a viscous plug in the subterranean formation
10/09/2008US20080245534 Wellhead Assembly and Method
10/09/2008US20080245529 Through-Riser Installation of Tree Block
10/09/2008US20080245527 Use Of A Chopper Mechanism To Add Fibers To A Well
10/09/2008US20080245524 Tubular running tool and method of using same
10/09/2008CA2682663A1 Rotating control device docking station
10/08/2008EP1978071A1 Method and composition for zonal isolation of a well
10/08/2008CN201129165Y Well cementing cement head balance pipe apparatus
10/08/2008CN201129164Y Floating hoop and floating shoe core body with self-pouring function convenient for connecting
10/08/2008CN201129163Y Compression type packer
10/08/2008CN201129162Y Packer capable of repeatable seat sealing
10/08/2008CN201129161Y Small diameter compressing packer
10/08/2008CN201129160Y Air pressure type well head connector
10/08/2008CN201129159Y Turnover type oil manifold anti-spitting device
10/08/2008CN201129158Y Oilfield well head shutter
10/08/2008CN201129157Y Oil well head pressure testing anti-theft sampler
10/08/2008CN201129156Y Novel blowout preventer
10/08/2008CN201129155Y Electric pump mounting protector
10/08/2008CN201129154Y Strong magnetic oil well anti-theft component
10/08/2008CN201129153Y Automatic deviation correcting anti-corrosive and abrasion-proof well head sealing device
10/08/2008CN101280674A Oil well cementing system with inverse squeezing and pouring functions
10/07/2008US7431106 Drilling method
10/07/2008US7431098 System and method for isolating a wellbore region
10/07/2008US7431092 Assembly and method for intervention of a subsea well
10/07/2008US7431091 Method and apparatus for wellbore fluid treatment
10/07/2008US7431086 Methods of servicing a wellbore with compositions comprising quaternary material and sorel cements
10/07/2008US7431081 Device for removal and filtration of drilling fluid
10/07/2008US7431079 Retrievable oil and or gas well blowout preventer
10/07/2008US7431078 Using pipe shrinkage upon expansion to actuate a downhole tool
10/07/2008CA2550750C Coiled tubing overbalance stimulation system
10/07/2008CA2486703C High pressure and temperature seal for downhole use
10/07/2008CA2443172C A method for pressure- and flow-preventive fixing of pipes in a well
10/07/2008CA2439107C Creation of a downhole seal
10/07/2008CA2396242C Expandable retaining shoe
10/02/2008WO2008118680A1 System and method for performing intervention operations with a compliant guide
10/02/2008WO2008118244A1 Method for treating a fractured formation
10/02/2008WO2008118021A1 Plug device
10/02/2008WO2008116899A2 Wellbore system and method of completing a wellbore
10/02/2008WO2008079486B1 Temporary containments for swellable and inflatable packer elements
10/02/2008WO2007124041A3 A system and method for estimating supercharge pressure and initial pressure of a formation
10/02/2008US20080242563 Aqueous solution containing crosslinkable polymer; hydraulic fracturing, plugging permeable zones
10/02/2008US20080237993 Subsurface safety valve with metal seal
10/02/2008US20080236838 Tool Trap Assembly and Method
10/02/2008US20080236826 Allowing a mixture of a calcium aluminate cement and a gelation inhibitor to set; inhibitors include terpolymers of methallyloxybenzenesulfonic acid or salts, methacrylic acid esters, and an acrylic amides
10/02/2008CA2681122A1 Wellbore system and method of completing a wellbore
10/01/2008EP1974120A1 Cementing valve
10/01/2008CN201125705Y Pumping cable wire blowout preventer
10/01/2008CN201125704Y Skate-board type casing head
10/01/2008CN201125703Y Anti-theft anti-bias grinding board root kit
10/01/2008CN201125702Y Anti-discharge, pressure reducing oil well head tee joint T
10/01/2008CN201125701Y Screw pump well head protector
10/01/2008CN201125700Y Anti-theft blowout prevention double seal well apparatus
10/01/2008CN201125699Y Oil pumping machine well head anti-bias grinding disc root kit
10/01/2008CN201125698Y Polish rod sealer hydraulic type second grade sealing device
10/01/2008CN201125697Y Rotating column plug type polish rod sealer blowout prevention pressure cover
10/01/2008CN201125688Y Rotating cementing tail tube hanger
10/01/2008CN201125686Y Water injection well anti-theft well head well washing apparatus
10/01/2008CN101275460A Thermal actuator
09/2008
09/30/2008US7428931 Multi-lock adapters for independent screwed wellheads and methods of using same
09/30/2008US7428928 Sealing spring mechanism for a subterranean well
09/30/2008US7428927 Cement float and method for drilling and casing a wellbore with a pump down cement float
09/30/2008CA2512443C Downhole measurement system and method
09/30/2008CA2510613C Mounts for blowout preventer bonnets
09/30/2008CA2474518C Fracturing port collar for wellbore pack-off system
09/30/2008CA2463611C Inflation tool with real-time temperature and pressure probes
09/30/2008CA2418804C Subsea intervention system
09/30/2008CA2416040C Method for treating multiple wellbore intervals
09/25/2008WO2008116034A1 Packing element and method
09/25/2008WO2008115866A2 Completion method for well cleanup and zone isolation
09/25/2008WO2008115607A1 Packer system and method
09/25/2008WO2008113979A1 Connector
09/25/2008WO2007140234A3 Seal configuration for top drive swivel apparatus and method
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