E21B 33 - Sealing or packing boreholes or wells

Patents for E21B 33 - Sealing or packing boreholes or wells (33,564)
12/2004
12/02/2004	WO2004104364A1 Dual-type plug for wellhead
12/02/2004	WO2004033844A3 System and method for installation and use of devices in microboreholes
12/02/2004	US20040238178 Annulus monitoring system
12/02/2004	US20040238175 Open water running tool and lockdown sleeve assembly
12/02/2004	US20040238172 Process for pressure stimulating a well bore through a template
12/02/2004	US20040238170 Aqueous storable cement spacer system and method of making and using the same
12/02/2004	US20040237826 Protection of blast holes
12/01/2004	EP1481147A1 Methods of discovering and correcting subterranean formation integrity problems during drilling
12/01/2004	CN2660108Y Double balance cylinder compression packer
12/01/2004	CN2660107Y Rotary packer
12/01/2004	CN2660106Y 封隔器 Packer
12/01/2004	CN2660105Y Oil agent hot extraction packer
12/01/2004	CN2660104Y Combined water blocking and pumping tool of well
12/01/2004	CN2660103Y Wellhead blowout preventer
12/01/2004	CN2660102Y Improved wellhead sealing structure for polished rod of beam unit
12/01/2004	CN2660101Y Wellhead pollution preventer of beam unit
12/01/2004	CN2660100Y Dropping blowout preventer for polished rod of beam unit
12/01/2004	CN2660099Y Multifunctional wellhead packing box
12/01/2004	CN1551943A Assembly for drilling low pressure formation
11/2004
11/30/2004	US6824171 Riser connector
11/30/2004	US6823944 Apparatus and method for completing a well
11/30/2004	US6823942 Tree saver
11/30/2004	US6823941 Recovery of production fluids from an oil or gas well
11/30/2004	US6823938 Locator and holddown tool for casing hanger running tool
11/30/2004	US6823937 Wellhead
11/30/2004	CA2293095C Pack-off bushing
11/30/2004	CA2167486C Coiled tubing composite
11/25/2004	WO2004101954A1 Compositions and methods of using the same to isolate a subterranean zone from a disposal well
11/25/2004	WO2004101704A1 Well-treating method to prevent or cure lost-circulation
11/25/2004	WO2004101473A2 Under-neutralized alkylxylene sulfonic acid composition for enhanced oil recovery processes
11/25/2004	US20040235674 Mixing with adjuvant; aqueous solution containing crosslinked polyvinylpyrrolidone
11/25/2004	US20040231861 Self sealing expandable inflatable packers
11/25/2004	US20040231860 Open hole anchor
11/25/2004	US20040231856 Casing mandrel with well stimulation tool and tubing head spool for use with the casing mandrel
11/25/2004	US20040231846 Reverse circulation cementing process
11/25/2004	US20040231836 Apparatus for releasing a ball into a wellbore
11/25/2004	US20040231835 Tubing hanger orientation device
11/25/2004	CA2523472A1 Well treating method to prevent or cure lost-circulation
11/24/2004	EP1479871A1 Self sealing expandable inflatable packers
11/24/2004	EP1478825A1 Tubing hanger with ball valve in the annulus bore
11/24/2004	CN2658387Y Spring floating hoop
11/24/2004	CN2658386Y Closed high pressure washable well packer
11/24/2004	CN2658385Y Relief switch for gas well work
11/24/2004	CN2658384Y Device for changing gas well oil pipe valve
11/24/2004	CN2658383Y Gommures sealing polished rod sealer
11/24/2004	CN2658382Y Snubbing serving machine with booster cylinder
11/24/2004	CN2658381Y Anti-theft casing drive head for oil well
11/24/2004	CN2658380Y Column spring type beam-pumping unit packing
11/24/2004	CN2658379Y Prefabrication shaped packing
11/24/2004	CN2658378Y Multifunction packing box for pumping well
11/24/2004	CN2658377Y Device for changing gas well casing packer
11/24/2004	CN2658374Y Mounting device of oil-gas well blowout preventer
11/24/2004	CN1548700A Plugging technology of high infiltration layer
11/23/2004	US6820692 Bentonite nodules
11/23/2004	US6820691 Cementing tool and method
11/23/2004	CA2458576C Methods of sealing subterranean zones
11/23/2004	CA2388391C Reciprocating lubricator
11/23/2004	CA2306016C Method and apparatus for injecting one or more fluids into a borehole
11/20/2004	CA2467358A1 Packing assembly for rotary drilling swivels and pumps having rotating shafts
11/18/2004	WO2004099549A2 Self-set bridge plug
11/18/2004	WO2004074621A3 System and method for maintaining zonal isolation in a wellbore
11/18/2004	US20040226747 Self-penetrating soil exploration device and associated methods
11/18/2004	US20040226724 Packer with metal sealing element
11/18/2004	US20040226723 Procedures and equipment for profiling and jointing of pipes
11/18/2004	US20040226722 ROV activated subsea connector
11/18/2004	US20040226717 Sealant compositions and methods of using the same to isolate a subterranean zone from a disposal well
11/18/2004	CA2524480A1 Methods and compositions for compensating for cement hydration volume reduction
11/18/2004	CA2524330A1 Self-set bridge plug
11/17/2004	EP1476637A1 Method for selecting a cementing composition for cementing wells
11/17/2004	CN2656619Y Polish rod sealer for pumping well
11/17/2004	CN2656618Y Abandoned well sealing device
11/17/2004	CN2656617Y Integrated multifunctional well head device
11/17/2004	CN1546835A Multifunctional oil extraction well mouth
11/17/2004	CN1546834A Semi-entire sealing well sealing device with self-sealing function for oil field
11/16/2004	US6817423 Wall stimulation tool and method of using same
11/16/2004	US6817421 Blowout preventer protector and method of using same
11/16/2004	US6817418 Subsea completion annulus monitoring and bleed down system
11/16/2004	US6817417 Debris cap
11/16/2004	US6817415 Method of sealing an annulus surrounding a slotted liner
11/16/2004	US6817412 Method and apparatus for the optimal predistortion of an electromagnetic signal in a downhole communication system
11/16/2004	US6817257 Apparatus for the remote measurement of physical parameters
11/11/2004	US20040222393 Rotating blowout preventer with independent cooling circuits and thrust bearing
11/11/2004	US20040222020 Rotating blowout preventer with independent cooling circuits and thrust bearing
11/11/2004	US20040221997 Methods and apparatus for wellbore construction and completion
11/10/2004	EP1475514A1 Testing drill packer
11/10/2004	CN2654848Y Mechanical self-sealed II type steam injection packer
11/10/2004	CN2654847Y External packer for casing
11/10/2004	CN2654846Y Horizontal well sand prevention packer
11/10/2004	CN2654845Y Built in bag type leaking stoppage apparatus
11/10/2004	CN1544496A Process for synthesizing specific carboxylic styrene butadiene latex for well cementation of oil-gas field
11/09/2004	US6814144 Well treating process and system
11/09/2004	CA2305015C Mixing method and apparatus
11/09/2004	CA2272680C Expandable wellbore junction
11/09/2004	CA2071151C Fluid actuated wellbore tool system
11/04/2004	WO2004094776A1 Biodegradable dispersants for cement compositions and methods of cementing in subterranean formations
11/04/2004	WO2004094775A2 Screen for blanking plug
11/04/2004	WO2004094774A1 Blow out preventer transportation and installation system
11/04/2004	US20040216925 Method and apparatus for drilling and lining a wellbore
11/04/2004	US20040216893 Method and apparatus for anchoring downhole tools in a wellbore
11/04/2004	US20040216885 Vacuum assisted seal engagement for ROV deployed equipment

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