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)
04/2003
04/09/2003CN2544093Y Packer for water blocking and layer pressure measuring
04/09/2003CN2544092Y Fracture packer
04/09/2003CN2544091Y Double-valve slag-proof device
04/09/2003CN2544090Y Oil Production hole top packing
04/08/2003US6543552 Method and apparatus for drilling and lining a wellbore
04/08/2003US6543546 Safety slip ram
04/08/2003US6543543 Pump systems and methods
04/08/2003US6543538 Method for treating multiple wellbore intervals
04/08/2003US6543536 Well reference apparatus and method
04/08/2003US6543533 Well tubing rotator
04/08/2003CA2044887C Horizontal inflatable tool
04/08/2003CA2043970C Treating an underground formation
04/05/2003CA2358242A1 Annular pressure spool
04/03/2003WO2003027432A2 Erosion resistant drilling head assembly
04/03/2003WO2003027430A2 Sealing assembly with electroactive polymers
04/03/2003US20030062168 Drilling alignment system
04/03/2003US20030062161 Cementing system for wellbores
04/03/2003US20030062155 Cementing plug location system
04/02/2003EP1298279A1 Wireline valve actuator
04/02/2003CN2542824Y Water injection well packer
04/02/2003CN2542823Y Blowout preventer for packing of pumping rod
04/02/2003CN2542822Y Wellhead hookup for electrical submersible pump production well
04/02/2003CN1407207A Shallow drill assembly with separate jet pump
04/01/2003US6540024 Small diameter external production riser tieback connector
04/01/2003US6540019 Intelligent thru tubing bridge plug with downhole instrumentation
03/2003
03/27/2003WO2003025338A1 Shut-off device
03/27/2003WO2003025336A1 Active controlled bottomhole pressure system & method
03/27/2003WO2003024634A2 Fluid seal and method of using same
03/27/2003WO2002103854A3 Conductor system
03/27/2003US20030058125 Reservoir management system and method
03/27/2003US20030056992 Erosion resistent drilling head assembly
03/27/2003US20030056956 Coiled tubing line deployment system
03/27/2003US20030056953 Method and apparatus for plugging a wellbore
03/26/2003EP1295006A1 Pipe handling apparatus and method of landing items at a well location
03/25/2003US6536530 Hydraulic control system for downhole tools
03/25/2003US6536520 Top drive casing system
03/25/2003CA2027726C Inflatable tool
03/20/2003WO2003023187A1 Method for creating a polished bore receptacle
03/20/2003WO2003023184A1 Connector
03/20/2003WO2003023182A1 Assembly for drilling low pressure formation
03/20/2003US20030051884 Coil tubing hanger system
03/20/2003US20030051880 Method and apparatus for drilling a plurality of offshore underwater wells
03/20/2003US20030051879 Systems and methods for constructing subsea production wells
03/20/2003US20030051878 Horizontal spool tree wellhead system and method
03/20/2003US20030051877 Stackable guide funnel system and method
03/20/2003US20030051876 Method and apparatus for stimulation of multiple formation intervals
03/20/2003US20030051871 Plastic packer
03/19/2003EP1293641A1 Apparatus for setting a sidetrack plug in a well bore
03/19/2003EP1292757A1 System for creating a conduit in a borehole formed in an earth formation
03/19/2003EP1292755A1 A bridge plug for use in a wellbore
03/19/2003CN2540507Y Integral waterflooding device consisting of packer and eccentric injection well down-hole flow
03/19/2003CN2540503Y Underground automatic mud flow fill device
03/19/2003CN2540502Y Anti-leakage powder temporary-plug devicefor oil well
03/19/2003CN2540501Y Water filling packer
03/19/2003CN2540500Y Blow-output preventing bulkhead for water well stratified testing
03/19/2003CN2540499Y Well head sealing device
03/19/2003CN2540498Y Anti-theft device for oil drain valve of oil production well head
03/19/2003CN1403684A High-pressure sealed test method for filling and gas-producing profile
03/19/2003CN1403532A Composite sandproof material for oil and water well and its prepn
03/18/2003US6533036 Method and a tool for treating the wall of a critical zone in a borehole
03/18/2003US6533032 Subsea pig launcher and method of using the same
03/18/2003US6532839 Apparatus for the remote measurement of physical parameters
03/18/2003CA2234386C Method and apparatus for cementing a well
03/18/2003CA2212977C Method for plugging gas migration channels in the cement annulus of a wellbore using high viscosity polymers
03/13/2003WO2003021080A1 High pressure high temperature packer system and expansion assembly
03/13/2003WO2003021076A1 Drilling alignment system
03/13/2003WO2002075098A3 Tension latching system
03/13/2003US20030048197 Sequential hydraulic control system for use in a subterranean well
03/13/2003US20030047880 Seal and method
03/13/2003US20030047324 Low profile static wellhead plug
03/13/2003US20030047321 Method for creating a polished bore receptacle
03/13/2003US20030047320 Method and apparatus for expandable liner hanger with bypass
03/13/2003US20030047307 Inflatable gas bag for use as a borehole plug
03/12/2003EP1290311A1 Sequential hydraulic control system for use in subterranean well
03/12/2003EP1289684A2 Composite particles and methods of their use
03/12/2003EP1129271B1 Shearing arrangement for subsea umbilicals
03/12/2003EP0975854B1 Apparatus for launching at least one plug into a tubular in a wellbore
03/12/2003EP0815347B1 Method for measuring of flow and flowmeter
03/12/2003CN2539839Y Combined oil layer protection packer
03/12/2003CN2539838Y 自锁封隔器 Self-locking packer
03/12/2003CN2539837Y Floating polish rod sealing device
03/11/2003US6531694 Wellbores utilizing fiber optic-based sensors and operating devices
03/11/2003US6530574 Method and apparatus for expansion sealing concentric tubular structures
03/11/2003US6530433 Wellhead with ESP cable pack-off for low pressure applications
03/11/2003US6530428 Method and apparatus for in-situ production well testing
03/06/2003WO2003018957A1 Expandable packer
03/06/2003WO2003018956A1 Drillable inflatable packer and methods of use
03/06/2003WO2003018955A1 Downhole actuation system utilizing electroactive fluids
03/06/2003WO2003004821A8 Soap stick launcher and method for launching soap sticks
03/06/2003WO2002059453A3 Riser connector for a wellhead assembly and method for conducting offshore well operations using the smae
03/06/2003US20030042048 Down hole drilling assembly with independent jet pump
03/06/2003US20030042028 High pressure high temperature packer system
03/06/2003US20030042027 Hanger assembly
03/06/2003US20030042026 Controllable production well packer
03/06/2003US20030042025 Light-intervention subsea tree system
03/06/2003US20030042022 High pressure high temperature packer system, improved expansion assembly for a tubular expander tool, and method of tubular expansion
03/05/2003EP1288434A1 Downhole drilling assembly with independent jet pump
03/05/2003EP1287224A1 Sealing assembly with deformable fluid-containing core
03/05/2003CN2538951Y Cementing casing
03/05/2003CN2538950Y Steam injecting packer
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