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)
09/2003
09/25/2003US20030180096 Modular seabed processing system
09/25/2003US20030179859 Method and apparatus for generating an audible tone in DSL environment
09/25/2003US20030178204 System and method for creating a fluid seal between production tubing and well casing
09/25/2003US20030178202 Flow completion system
09/25/2003US20030178200 Subsea intervention system, method and components thereof
09/25/2003US20030178196 Isolation bypass transition joint
09/25/2003US20030178192 Apparatus for controlling the annulus of an inner string and casing string
09/25/2003US20030177932 Inflatable gas bag for use as a borehole plug
09/25/2003US20030177848 Method and device for measuring a path that has been covered
09/24/2003CN2575293Y Bead type oil-production sandproof pipe
09/24/2003CN2575292Y Multi-wall T shape bottom mounted self-balance electromechanical integral intelligent oil pumping unit
09/24/2003CN2575291Y Drilling well plugging leaks analog experiment apparatus
09/24/2003CN2575290Y Oil layer protector
09/24/2003CN2575289Y Multifunction follow-up centring pumping well head sealing apparatus
09/24/2003CN1443923A Oil-pumping well head equipment
09/23/2003US6622799 Method for subsea pod retrieval
09/23/2003US6622798 Method and apparatus for maintaining a fluid column in a wellbore annulus
09/23/2003US6622793 Method for carrying out operations on petroleum and gas fields and deep-sea platform for realizing the same
09/23/2003US6622554 Open hole formation testing
09/23/2003CA2275445C Apparatus for and method of assembling a rotary blowout preventer
09/23/2003CA2270236C Communication conduit in a well tool
09/21/2003CA2404402A1 Storable water-silica suspensions for use in well cements and methods
09/18/2003WO2003076762A1 Method and device for liner system
09/18/2003WO2003054344B1 Split base plate assembly for multiple completion wellheads
09/18/2003WO2003036018A3 Downhole actuator and tool
09/18/2003US20030173092 Apparatus and method for sealing well bores and bore holes
09/18/2003US20030173090 Lubrication and self-cleaning system for expansion mandrel
09/18/2003US20030173077 Pressure control system for a wet connect/disconnect hydraulic control line connector
09/18/2003US20030173073 Top drive casing system
09/18/2003US20030172752 Apparatus for the remote measurement of physical parameters
09/17/2003CN2573665Y Water plugging packer
09/17/2003CN2573664Y External pipe packer
09/17/2003CN2573663Y Underbalance borehole well shut-in device
09/17/2003CN2573662Y Ground packer testing device
09/17/2003CN2573661Y Spinning separated layer injection packer
09/17/2003CN2573660Y Self-adjusting theftproof packing kit
09/17/2003CN2573655Y Spiral centering device for well cementation
09/17/2003CN1443268A Method for treating multiple wellbore intervals
09/16/2003USRE38249 Rotating blowout preventer and method
09/16/2003US6619398 Cement diverter system for multilateral junctions and method for cementing a junction
09/16/2003US6619391 Combined sealing and gripping unit for retrievable packers
09/16/2003US6619387 Inflatable gas bag for use as a borehole plug
09/16/2003CA2220385C Placing and cementing casing in horizontal wells
09/13/2003CA2376584A1 Circulating tubing head
09/11/2003US20030168220 Inflatable flow control device and method
09/11/2003US20030168214 Method and device for testing a well
09/10/2003EP0839255B1 Safeguarded method and apparatus for fluid communication using coiled tubing, with application to drill stem testing
09/10/2003EP0777813B1 Formation isolation and testing apparatus and method
09/10/2003CN2571994Y Packing valve
09/10/2003CN2571993Y I.II interface flee-proof sleeve with vortex brush for well cementing
09/10/2003CN2571992Y Packer capable of repeatedly downhole setting seal
09/10/2003CN2571991Y Feed-through device for high-pressure borehole of oil-submerged electric pump
09/10/2003CN1441026A Composite plugging agent with biological calcium binding material and its usage
09/09/2003US6615923 ROV-deployable subsea wellhead protector
09/09/2003US6615921 Apparatus and method for remote adjustment of drill string centering to prevent damage to wellhead
09/09/2003US6615920 Template and system of templates for drilling and completing offset well bores
09/09/2003US6615918 Re-establishing oil and/or gas production from an underground formation from a well that has experienced water breakthrough; injecting a reactive chemical, followed by a spacer fluid and a gel or polymer progenitor fluid
09/09/2003US6615915 High pressure side-by-side wellhead system
09/09/2003CA2116873C Wellhead
09/04/2003WO2003072905A1 Liquified material squeezing method and apparatus for oil and gas wells
09/04/2003WO2002059453A9 Riser connector for a wellhead assembly and method for conducting offshore well operations using the smae
09/04/2003US20030164276 Top drive casing system
09/04/2003US20030164240 Controllable gas-lift well and valve
09/04/2003US20030164237 Method, apparatus and system for selective release of cementing plugs
09/03/2003EP1340882A2 Method and apparatus for selective release of cementing plugs downhole
09/03/2003EP1339944A1 High temperature and pressure packer
09/03/2003EP1339943A1 Well sealing method and apparatus
09/03/2003EP1339938A2 Boring apparatus
09/03/2003EP1339937A2 Improved method for stimulation of liquid flow in a well
09/03/2003EP1339811A2 Environmentally acceptable fluid polymer suspension for oil field services
09/03/2003EP1000219B1 A method of injecting drilling waste into a well while drilling
09/03/2003EP0954675B1 Well head system
09/03/2003CN2570449Y Fast-assembling suspension sealed single-stage casing head
09/03/2003CN2570448Y Rotating spray-proof flow guiding apparatus
09/03/2003CN1440485A Well managment System
09/02/2003US6612537 Cartridge gate valve
09/02/2003US6612372 Two-stage downhole packer
09/02/2003US6612371 Wellhead system comprising a sliding sleeve seal
09/02/2003US6612368 Flow completion apparatus
09/01/2003CA2419643A1 Method, apparatus and system for selective release of cementing plugs
08/2003
08/28/2003WO2003071094A1 Method for selecting a cementing composition for cementing wells
08/28/2003WO2003071093A1 Ball dropping assembly
08/28/2003WO2003071092A1 Protection structure and method for subsea oil recovery operations
08/28/2003WO2003071090A1 Methods of discovering and correcting subterranean formation integrity problems during drilling
08/28/2003WO2003070565A2 Subsea intervention system, method and components thereof
08/28/2003US20030163257 Method for selection of cementing composition
08/28/2003US20030162670 Methods of discovering and correcting subterranean formation integrity problems during drilling
08/28/2003US20030159827 Multiple tube structure
08/28/2003US20030159822 Well shut off device
08/28/2003CA2478181A1 Subsea intervention system, method and components thereof
08/27/2003EP1155217B1 A method for setting a packer in a well bore, and a packer
08/27/2003EP1038090B1 An improvement in placing cement slurry in wells in the presence of geological zones containing swelling clays or mud residues containing clays
08/27/2003CN2568806Y Blowout preventer when sucker rod broken and falled
08/27/2003CN2568805Y Whole blowout preventer for oil field
08/27/2003CN2568804Y Remote intelligence monitoring antitheft device of producing wellhead
08/27/2003CN2568803Y Antitheft device of producing wellhead
08/26/2003US6609734 Torus type connector
08/26/2003US6609731 Connector
08/26/2003US6609572 Riser connector
08/26/2003US6609571 Remote sub-sea lubricator
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