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)
10/2000
10/17/2000US6131654 Well cover and method of making
10/17/2000CA2037065C Casing hanger seal assembly
10/12/2000WO2000017485A8 Device for equipment adapted for waste product injection usage, i.e. cuttings or other environmentally toxic liquids
10/12/2000DE4491017C2 Verfahren zur Fertigstellung eines Bohrlochs unter Einbringen einer Kiesschüttung neben einer Formation in dem Bohrloch A method for completing a well under introducing a gravel next to a formation in the wellbore
10/12/2000DE10008599A1 Bohrloch-Auskleidungsaufhängung Borehole liner hanger
10/12/2000CA2302938A1 Bidirectional temperature and pressure effect compensator for inflatable elements
10/11/2000EP1043477A1 A method and apparatus for completing a well for producing hydrocarbons or the like
10/11/2000EP1042585A1 Method and apparatus for cementing casing in a wellbore
10/11/2000EP1042584A1 A method and a tool for treating the wall of a critical zone in a borehole
10/11/2000EP1042583A1 Apparatus and method for injecting treatment fluids into an underground formation
10/11/2000CN2400571Y Retrievable and drillable packer
10/11/2000CN2400570Y Hydraulic switch sliding sleeve
10/11/2000CN2400569Y New well-flushing packer
10/11/2000CN2400568Y Blowout-preventing box for crude oil test production
10/11/2000CN1057364C Double walled heat insulated tubing and method for installing them
10/10/2000US6129152 Rotating bop and method
10/10/2000US6129149 Wellhead connector
10/05/2000WO2000058601A1 Wellbore packer
10/05/2000WO2000031452A3 Bidirectional metal to metal seal
10/04/2000EP1040231A1 Soil consolidation apparatus, tool and method
10/04/2000EP0727007A4 Pressurized sheave mechanism for high pressure wireline service
10/03/2000US6125939 Remotely deployable landing shoulder
10/03/2000US6125938 Control module system for subterranean well
10/03/2000US6125935 Method for monitoring well cementing operations
09/2000
09/27/2000EP1038090A1 An improvement in placing cement slurry in wells in the presence of geological zones containing swelling clays or mud residues containing clays
09/27/2000EP1038087A1 Assembly and process for drilling and completing multiple wells
09/27/2000CN1056901C Activated flyash and application thereof
09/26/2000USRE36880 Spoolable flexible hydraulic controlled coiled tubing safety valve
09/26/2000US6123152 Retrieving well tools under pressure
09/26/2000US6123148 Compact retrievable well packer
09/20/2000CN2397254Y Cementing pulsating device of well cementation for petroleum engineering
09/19/2000US6119783 Linear indexing apparatus and methods of using same
09/19/2000US6119775 Inflatable downhole seal
09/19/2000US6119773 Well production system with a hydraulically operated safety valve
09/19/2000US6119771 Sealed lateral wellbore junction assembled downhole
09/14/2000WO2000053887A2 Wellbore primary barrier and related systems
09/13/2000CN2396176Y Double-valve type automatic sludge-filling shutoff device
09/13/2000CN1266129A Foundation grouting apparatus and method thereof
09/12/2000US6116345 Tubing injection systems for oilfield operations
09/12/2000CA2030828C Packing assembly for use with reeled tubing and method of operating and removing same
09/11/2000CA2607830A1 Forming a wellbore casing while simultaneously drilling a wellbore
09/11/2000CA2607565A1 Forming a wellbore casing while simultaneously drilling a wellbore
09/11/2000CA2606444A1 Forming a wellbore casing while simultaneously drilling a wellbore
09/11/2000CA2300363A1 Forming a wellbore casing while simultaneously drilling a wellbore
09/08/2000WO2000052300A1 Rotating blowout preventer
09/08/2000WO2000052299A1 Internal riser rotating control head
09/07/2000DE19909231A1 Copolymere und ihre Verwendung als Bohrhilfsmittel Copolymers and their use as drilling aids
09/06/2000EP1033378A1 Copolymers and their use as drilling additives
09/06/2000CN2395028Y Leak-proof blowout preventer of wellhead packing
09/06/2000CN1056210C Method for well cementation
09/05/2000US6113061 Method and apparatus for replacing a packer element
09/05/2000US6112811 Service packer with spaced apart dual-slips
09/05/2000US6112810 Remotely controlled assembly for wellbore flow diverter
08/2000
08/31/2000WO2000050732A1 Selective zonal isolation within a slotted liner
08/30/2000EP0995011A4 Improved method and multi-purpose apparatus for dispensing and circulating fluid in wellbore casing
08/30/2000CN2393998Y Anti-seatling stuffing box on hole top
08/29/2000US6109836 Soil consolidation apparatus, tool and method
08/29/2000US6109831 Underground boring and pipe installation
08/29/2000US6109353 Single bore riser system
08/29/2000US6109352 Simplified Xmas tree using sub-sea test tree
08/29/2000US6109348 Rotating blowout preventer
08/29/2000CA2122964C Low temperature well cementing compositions and methods
08/26/2000CA2299059A1 Liner hanger
08/24/2000WO2000049270A1 Device for annular well isolation
08/23/2000EP1030031A1 Apparatus for use in subterranean wells
08/23/2000EP1029148A1 Plug for use in wellbore operations and apparatus for launching said plug
08/23/2000CN2392911Y Well bloking device
08/22/2000US6105692 Swivel chamber for water actuated wireline drills
08/22/2000US6105673 Patching of injection and production well annular casing leaks for restoring mechanical integrity
08/22/2000US6105669 Well casing sealing device
08/18/2000CA2298798A1 Extreme service packer having slip actuated debris barrier
08/17/2000WO2000047870A1 A method for use in sampling and/or measuring in reservoir fluid
08/17/2000WO2000047868A1 Completion equipment having a plurality of fluid paths for use in a well
08/17/2000WO2000047866A1 Improved method and multi-purpose apparatus for dispensing and circulating fluid in wellbore casing
08/17/2000WO2000047865A1 Single valve for a casing filling and circulating apparatus
08/17/2000WO2000047864A1 Subsea completion apparatus
08/17/2000WO2000034621A3 High load, thin slip system
08/17/2000CA2362810A1 Subsea completion apparatus
08/16/2000EP1027522A1 An apparatus for retaining two strings of tubulars
08/16/2000EP1027396A1 Drilling and cementing through shallow waterflows
08/16/2000EP0807151B1 Polymeric earth support fluid compositions and method for their use
08/16/2000CN2391986Y Differential type float shoe and float collar
08/16/2000CN2391985Y Water pressure difference and clock control type switch packer
08/16/2000CN1263141A Composite acid-soluble drilling plugging agent
08/15/2000US6102828 Electrohydraulic control unit
08/15/2000US6102673 Subsea mud pump with reduced pulsation
08/15/2000US6102626 Caisson wellhead system and method of installing the same
08/15/2000US6102125 Coiled tubing workover riser
08/15/2000US6102124 Flying lead workover interface system
08/15/2000US6102120 Zone isolation tools
08/15/2000US6102117 Retrievable high pressure, high temperature packer apparatus with anti-extrusion system
08/10/2000WO2000046483A1 Seal stack
08/09/2000EP1026365A2 Liner assembly and method of running the same
08/09/2000EP1025338A1 Production fluid control device for oil/gas wells
08/09/2000EP1025333A4 Single riser with two wellheads
08/09/2000EP1025333A1 Single riser with two wellheads
08/09/2000EP1015184A4 Granular particle gripping surface
08/09/2000EP0988439A4 Casing annulus remediation system
08/09/2000CN2391012Y Special blowout preventer for production logging
08/09/2000CN2391011Y Flow collector for water exploration instrument
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