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)
12/2003
12/10/2003EP1198658B1 Method of creating a weld in a wellbore
12/09/2003US6659183 Cuttings injection target plate
12/04/2003US20030225606 Tools for decision-making in reservoir risk management
12/04/2003US20030225522 Method and apparatus for effective well and reservoir evaluation without the need for well pressure history
12/04/2003US20030225521 Modeling, simulation and comparison of models for wormhole formation during matrix stimulation of carbonates
12/04/2003US20030221843 Junction isolation apparatus and methods for use in multilateral well treatment operations
12/04/2003US20030221836 Multi seam coal bed/methane dewatering and depressurizing production system
12/04/2003US20030221834 Systems and methods for controlling flow and access in multilateral completions
12/03/2003EP1117901B1 Method for controlling a horizontal drilling machine
12/03/2003EP1117894B1 Roller-cone bits, systems, drilling methods, and design methods with optimization of tooth orientation
12/03/2003CN2589669Y Subsurface high-performance mill expanding device
12/03/2003CN2589668Y Derrick-free continuous pumping rod operating equipment
12/02/2003CA2142113C Method for completing multi-lateral wells and maintaining selective re-entry into laterals
11/2003
11/27/2003WO2003098153A2 Downhole tool deployment safety system and methods
11/27/2003WO2003097987A2 A device for a long well tool
11/27/2003US20030220775 Method for quantifying uncertainties related to continuous and discrete parameters descriptive of a medium by construction of experiment designs and statistical analysis
11/20/2003WO2003095791A1 Multilateral well drilling and reentry system and method
11/20/2003US20030213620 Apparatus for transferring electrical energy between rotating and non-rotating members of downhole tools
11/20/2003US20030213595 Downhole tool deployment safety system and methods
11/20/2003US20030213594 In situ thermal processing of a hydrocarbon containing formation to produce a mixture with a selected hydrogen content
11/20/2003US20030213113 Apparatus and methods for remote installation of devices for reducing drag and vortex induced vibration
11/19/2003EP1153194B1 Automated bore planning method and apparatus for horizontal directional drilling
11/18/2003US6648082 Differential sensor measurement method and apparatus to detect a drill bit failure and signal surface operator
11/18/2003US6648069 Well reference apparatus and method
11/18/2003CA2261256C Methods of protecting well tubular goods from corrosion
11/13/2003WO2002066791A8 Downhole sensing and flow control utilizing neural networks
11/11/2003US6644410 Modular subsea control system
11/06/2003WO2003091533A1 Downhole cathodic protection cable system
11/06/2003US20030205522 System for producing de-watered oil
11/06/2003US20030205379 Expanding wellbore junction
11/06/2003US20030205083 Monitoring of downhole parameters and tools utilizing fiber optics
11/05/2003EP1358394A1 Optimization of reservoir, well and surface network systems
11/04/2003US6640912 Automatic control measures and records dry weight of cuttings removed from the hole and controls, slurry density and viscosity, as well monitoring and maintaining injection pressure to within established pressure parameters
11/04/2003US6640895 Expandable tubing joint and through-tubing multilateral completion method
11/04/2003CA2285194C Window assembly for multiple wellbore completions
11/04/2003CA2147562C Single drilling guide base for subsea oil wells
10/2003
10/30/2003WO2003089759A1 Method and apparatus for determining drill string movement mode
10/30/2003WO2003089758A1 System and method for interpreting drilling data
10/30/2003WO2003089751A2 Method for improving drilling depth measurements
10/30/2003US20030201100 Downhole cathodic protection cable system
10/30/2003US20030200995 Cleaning bore hole using high energy, low energy jets
10/29/2003EP1357403A2 A method of generating electric power in a wellbore
10/29/2003EP1357402A2 A light actuated system for use in a wellbore
10/29/2003EP1357401A2 A system for controlling a downhole device in a wellbore
10/29/2003EP1097287B1 Floating spar for supporting production risers
10/29/2003CN2583357Y Series water tap for workover
10/29/2003CN1125916C Continuous pumping rod operation machine
10/28/2003US6640205 Method and device for investigating and identifying the nature of a material
10/28/2003US6637524 Non-rotating sensor assembly for measurement-while-drilling applications
10/28/2003CA2318032C Variable output rotary power generator
10/25/2003CA2383379A1 Determination of the orientation of geological beds from stratigraphic data in deviated wells
10/23/2003WO2003046333A3 Thermoacoustic electric power generation
10/23/2003US20030196814 Fuel cell for downhole and subsea power systems
10/22/2003EP1355170A2 A method of controlling production from a wellbore
10/22/2003EP1355169A2 Method and apparatus for controlling chemical injection of a surface treatment system
10/22/2003EP1355168A2 A method for avoiding injection induced unintentional fracture growth
10/22/2003EP1355167A2 An injection well with a fibre optic cable to measure fluorescence of bacteria present
10/22/2003EP1355166A2 An injection evaluation system
10/22/2003EP0842347B9 Device and process for the lining of a pipe branch, particularly in an oil well
10/22/2003CN2581688Y Integrated working machine for well field
10/22/2003CN1451075A Method and apparatus for hydrocarbon subterranean recovery
10/22/2003CN1450967A Apparatus for deploying load to underwater targt position with enhanced accuracy and method to control such apparatus
10/22/2003CN1450246A Automatic service rig for oil field
10/21/2003US6634430 Method for installation of evacuated tubular conduits
10/21/2003CA2226333C Lightweight intervention system
10/16/2003US20030192812 Cuttings disposal method
10/16/2003US20030192720 Drill pipe protector
10/16/2003US20030192717 Sealed multilateral junction system
10/16/2003US20030192700 Sand barrier for a level 3 multilateral wellbore junction
10/16/2003US20030192699 Expandable float shoe and associated methods
10/16/2003US20030192692 Method and system for wireless communications for downhole applications
10/15/2003CN2580106Y Closed igniter for drilling well
10/14/2003US6633236 Permanent downhole, wireless, two-way telemetry backbone using redundant repeaters
10/14/2003US6633164 Measuring focused through-casing resistivity using induction chokes and also using well casing as the formation contact electrodes
10/14/2003CA2366017C Downhole depth correlation
10/12/2003CA2842776A1 Sealed multilateral junction system
10/12/2003CA2842775A1 Sealed multilateral junction system
10/12/2003CA2842773A1 Sealed multilateral junction system
10/12/2003CA2766051A1 Sealed multilateral junction system
10/09/2003CA2618944A1 Replaceable electrical device for drilling tool
10/08/2003EP1350309A2 Internal power source for downhole detection system
10/08/2003EP1099001B1 Use of a cemented carbide for oil and gas applications
10/08/2003CN2578521Y Hanging well drilling basic disc of central well
10/08/2003CN2578520Y Self-lifting well drilling platform tensioner
10/07/2003CA2226970C Branch boreholes
10/02/2003US20030187582 Method of assaying downhole occurrences and conditions
10/02/2003CA2423795A1 Method to quantity uncertainty related to descriptive continuous and discrete parameters of an environment through experimental design construction and statistical analysis
10/01/2003EP1348064A1 An assembly and method for forming a seal in a junction of a multilateral wellbore
09/2003
09/30/2003US6629086 Method for interpreting petroleum characteristics of geological sediments
09/30/2003CA2293427C System for drilling and completing multilateral wells
09/25/2003WO2003078791A2 Method and apparatus for injecting steam into a geological formation
09/25/2003US20030178205 Hydraulic power source for downhole instruments and actuators
09/25/2003US20030178197 Downhole tubular string connections
09/25/2003US20030178196 Isolation bypass transition joint
09/25/2003US20030178191 In situ recovery from a kerogen and liquid hydrocarbon containing formation
09/24/2003EP1149312A4 High-power well logging method and apparatus
09/24/2003CN1122236C Apparatus and method of well management
09/24/2003CN1121965C Apparatus and method for deploying object or load on seabed
09/23/2003US6622792 Apparatus and method for improving multilateral well formation and reentry
09/18/2003US20030173113 Automated bore planning method and apparatus for horizontal directional drilling
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