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 41 - Equipment or details not covered by groups
Patents for E21B 41 - Equipment or details not covered by groups (7,984)
11/2008
11/23/2008CA2603715A1 Method and apparatus for re-entering an abandoned well
11/20/2008WO2008139049A2 Method for monitoring the co2 content in brines
11/20/2008WO2007014339A3 Method and apparatus for coupling expandable tubular members
11/20/2008US20080288226 Integrated Resevoir optimization
11/20/2008US20080286053 Arctic platform
11/20/2008US20080283303 Safety net for a drill rig
11/18/2008US7451809 Apparatus and methods for utilizing a downhole deployment valve
11/18/2008CA2631414A1 Safety net for a drill rig
11/18/2008CA2392117C Production valve
11/13/2008WO2008016876A3 Fluid flowrate determination
11/13/2008US20080277166 Downhole Drilling of a Lateral Hole
11/13/2008US20080277122 Apparatus and a Method For Deployment of a Well Intervention Tool String Into a Subsea Well
11/13/2008CA2686213A1 Enclosed coiled tubing rig
11/12/2008EP1989396A2 Flexible well completions
11/05/2008EP1987376A1 Method and system for identifying and evaluating the risk of failure of a geological confinement system
11/05/2008EP1987223A1 System for and method of restraining a subsurface exploration and production system
11/05/2008CN101300402A Monitoring formation properties
11/04/2008US7445058 Nozzle unit and method for excavating a hole in an object
11/04/2008CA2492422C A system for evaluating over and underbalanced drilling operations
11/04/2008CA2344754C Coiled tubing wellbore cleanout
10/2008
10/30/2008US20080264643 Lightweight device for remote subsea wireline intervention
10/30/2008US20080264628 Restrictor Valve Mounting for Downhole Screens
10/28/2008CA2387416C Well treatment fluids comprising mixed aldehydes
10/23/2008WO2008128066A2 Cement plug launch system
10/23/2008WO2008127123A1 An integrated device for the treatment of drill cuttings
10/23/2008WO2008125135A1 Power supply device
10/23/2008US20080257032 Christmas tree with internally positioned flowmeter
10/22/2008EP1983153A1 Flexible liner for drilled drainhole deployment
10/22/2008EP1315881B1 Method and system for perforating
10/22/2008CN201137480Y Oil well borehole chemical agent deposition slow releasing device
10/21/2008US7440876 Method and apparatus for drilling waste disposal engineering and operations using a probabilistic approach
10/21/2008US7438505 Heave compensated snubbing system and method
10/21/2008CA2360930C Multilateral well and electrical transmission system
10/16/2008WO2008092100A3 Chemically enhanced gas-lift for oil and gas wells
10/15/2008CN201133236Y Portable safe multipurpose operating platform
10/15/2008CN101287888A Well having inductively coupled power and signal transmission
10/14/2008US7437215 Method and system for improving pump efficiency and productivity under power disturbance conditions
10/14/2008US7434632 Roller cone drill bits with enhanced drilling stability and extended life of associated bearings and seals
10/14/2008US7434621 System and a method for prediction and treatment of slugs being formed in a flow line or wellbore tubing
10/14/2008US7434619 Optimization of reservoir, well and surface network systems
10/14/2008US7434614 Safety lock for elevators
10/14/2008US7434613 Surface controlled subsurface lateral branch safety valve
10/14/2008CA2296108C Actuation system for a downhole tool
10/09/2008US20080247273 Apparatus and methods for self-powered communication and sensor network
10/08/2008EP1977077A2 Containment of drilling waste material
10/08/2008EP1893843B1 Apparatus and method for transferring fluids from a floating vessel to a subsea intervention module
10/08/2008EP1287227B1 Downhole window finder and method of using the same
10/07/2008US7431105 Geothermal heat loop installation
10/07/2008US7431097 Apparatus and method for injecting tubing into a well
10/07/2008US7431093 Protection scheme and method for deployment of artificial lift devices in a wellbore
10/07/2008US7431091 Method and apparatus for wellbore fluid treatment
10/07/2008CA2424395C Apparatus and methods for isolating a wellbore junction
10/07/2008CA2319470C Apparatus for running two tubing strings into a well
10/02/2008WO2008118981A2 Wireless logging of fluid filled boreholes
10/02/2008WO2008118700A1 Piezoelectric resonant power generator
10/02/2008US20080236838 Tool Trap Assembly and Method
09/2008
09/30/2008US7430501 Decision support method for oil reservoir management in the presence of uncertain technical and economic parameters
09/25/2008WO2008093054A3 Systems and methods for monitoring sensor and actuator health and performance
09/25/2008US20080230227 Control System of an Actuator for the Actuation of Submarine Devices
09/23/2008US7427452 Operating electrolyte based components
09/23/2008CA2522428C Method and apparatus for disposal of well flare gas in oil and gas drilling and recovery operations
09/23/2008CA2507787C Method of developing a re-entry into a parent wellbore from a lateral wellbore, and bottom hole assembly for milling
09/23/2008CA2409277C Wellbores utilizing fiber optic-based sensors and operating devices
09/18/2008WO2008112758A1 Vortex induced vibration suppression systems and methods
09/12/2008WO2008107142A1 Drilling method and apparatus
09/11/2008US20080217019 Coiled tubing wellbore cleanout
09/10/2008EP1397661B1 Method and apparatus for downhole fluid characterization using flxural mechanical resonators
09/10/2008CN201113756Y Oil rig multifunctional auxiliary brake device
09/04/2008WO2008106476A1 System and method for waterflood performance monitoring
09/04/2008CA2679582A1 System and method for waterflood performance monitoring
09/03/2008EP1963613A1 Plug retrieval and debris removal tool
09/03/2008CN100416735C Microelectromechanical devices
09/02/2008US7419003 Erosion resistant aperture for a downhole valve or ported flow control tool
09/02/2008CA2500036C Apparatus and method for generating electrical power in a borehole
08/2008
08/28/2008WO2008103642A1 Wellbore monitor
08/28/2008US20080202761 Method of functioning and / or monitoring temporarily installed equipment through a Tubing Hanger.
08/28/2008US20080202760 Subsea securing devices
08/28/2008CA2678511A1 Wellbore monitor
08/27/2008CN101251002A Device for continuously adding medicine into oil well down-hole liquid
08/26/2008CA2424709C Multiplexed distribution of optical power
08/20/2008EP1957750A1 Methods for optimizing efficiency and durability of rotary drag bits and rotary drag bits designed for optimal efficiency and durability
08/19/2008US7413020 Full bore lined wellbores
08/14/2008WO2008097947A2 Down hole electrical connector for combating rapid decompression
08/14/2008WO2008079211B1 Computer aided design of rock drilling bit
08/14/2008US20080191575 for use within hydrocarbon wellbore, the motor comprising a hermetically sealed casing containing an oil-filled space, a spool of motor winding wire disposed within oil-filled space and comprising a conductive core, an electrically insulating polymer layer, contaminant resistant outer polymer layer
08/14/2008US20080190668 Separation Of Evolved Gases From Drilling Fluids In a Drilling Operation
08/14/2008US20080190620 Single cycle dart operated circulation sub
08/13/2008EP1956184A2 Method and apparatus for pipeline connection
08/13/2008CN201100120Y Drilling well under-ship immersion under-water drilling well base tray for boundary oil gas field
08/13/2008CN201100119Y Hoisting system for under-water drilling well base tray
08/13/2008CN201100118Y Cement injection blocking ring sealing structure between under-water base tray guiding stake pipe and stake pipe cover
08/12/2008US7410327 Arctic platform
08/09/2008CA2619209A1 Impact panels
08/07/2008WO2008093054A2 Systems and methods for monitoring sensor and actuator health and performance
08/07/2008US20080185813 Portable well flare equipment trailer
08/07/2008US20080185155 Down Hole Electrical Connector for Combating Rapid Decompression
08/06/2008EP1951988A2 Downhole tool
08/06/2008EP1386387B1 Downhole torque generator
08/06/2008CA2583530A1 Portable well flare equipment trailer
08/05/2008US7407020 Rotating systems associated with drill pipe
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