Patents for E21B 41 - Equipment or details not covered by groups (7,984)
05/1996
05/01/1996EP0513296B1 Device for the assembly or disassembly of probes in process pipes, tanks, etc.
04/1996
04/30/1996CA1338279C Method for underground disposal of liquid waste
04/23/1996US5509490 For preventing mud interference to a portion of a drill string
04/18/1996WO1996011344A1 A mechanical overload protection device
04/16/1996US5507346 Composite well flow conductor
04/11/1996WO1996010719A1 A device for burning gas from a production plant for oil or gas
04/10/1996EP0586428B1 Apparatus for measuring the profile of a moving object
04/02/1996US5503225 System and method for monitoring the location of fractures in earth formations
04/02/1996US5503014 Method and apparatus for testing wells using dual coiled tubing
03/1996
03/26/1996US5502267 Pollution control for waste treatment of sludge
03/26/1996US5501549 Pulling and connecting tool for subsea conduits
03/26/1996US5501281 Torque-resistant, seal setting force-limited, hydraulically settable well packer structure and associated methods
03/20/1996EP0496850B1 Drill cuttings disposal method and system
03/20/1996CN1031335C Method and system for conducting offshore well operations
03/19/1996US5499681 Centralizing liner hanger method and system for subterranean multilateral well drilling
03/19/1996US5499680 Diverter, diverter retrieving and running tool and method for running and retrieving a diverter
03/13/1996EP0701045A2 Multilateral well drilling and completion method and apparatus
03/13/1996EP0701044A2 Apparatus and method for hanging a downhole liner
03/13/1996EP0701043A2 Torque-resistant well packer
03/13/1996EP0701042A2 Decentring method and apparatus, especially for multilateral wells
03/13/1996EP0701041A2 Well flow conductor and manufacture thereof
03/13/1996EP0701040A2 Downhole diverter and retrieving tool therefor
03/07/1996WO1996007001A1 Telescopic flare pipe tower
03/05/1996US5495986 Liquid fuel, solid waste material
02/1996
02/27/1996US5495237 Measuring tool for collecting down hole information and metering valve for producing mud-pulse used in the same
02/27/1996CA2156983A1 Centralizing liner hanger method and system for subterranean multilateral well drilling
02/27/1996CA2156981A1 Composite well flow conductor for subterranean multilateral well drilling and completion and method of manufacture therefor
02/26/1996CA2155704A1 Method for improving productivity of a well
02/21/1996EP0697057A1 Drill bit and other downhole tools
02/20/1996US5492173 Plug or lock for use in oil field tubular members and an operating system therefor
02/13/1996US5490563 Perforating gun actuator
02/13/1996US5490364 Telescopic flare pipe tower
02/01/1996WO1996002728A1 Emf sacrificial anode sub and method to deter bit balling
01/1996
01/23/1996US5486070 Method for conducting offshore well operations
01/16/1996US5484231 Disposal of slurries of municipal waste in deep geothermal reservoirs
01/16/1996US5484016 For use in removing material buildup from an inner surface
01/11/1996WO1996000834A1 Drag block for increasing the fluid resistance in a well production tubing
01/09/1996CA2051081C Method of inhibiting corrosion in acidizing wells
01/02/1996US5480266 Tensioned riser compliant tower
12/1995
12/26/1995US5477925 Method for multi-lateral completion and cementing the juncture with lateral wellbores
12/26/1995US5477924 Method for producing hydrocarbon from an unknown reservoir
12/26/1995US5477923 Wellbore completion using measurement-while-drilling techniques
12/13/1995EP0686753A2 A release device
12/12/1995US5474131 Method for completing multi-lateral wells and maintaining selective re-entry into laterals
12/12/1995US5474130 Perforation purging tool
11/1995
11/30/1995WO1995032353A1 Lateral drilling method
11/30/1995CA2191076A1 Lateral drilling method
11/08/1995EP0681090A2 Measurement while drilling tool
11/08/1995EP0681088A2 Annulus pressure responsive downhole tool
11/08/1995EP0680388A1 Subterranean disposal of liquid and slurried wastes
11/02/1995WO1995029435A1 Sensor system for controlling ventilation systems in vehicles
11/02/1995WO1995029072A1 Sensor arrangement for controlling vehicle ventilation systems
11/02/1995EP0553134B1 A method of disposing of drilling wastes
11/02/1995DE4414594A1 Sensor device for controlling vehicle ventilation system
10/1995
10/31/1995US5463164 Waste disposal in subterranean earth formations
10/31/1995US5462120 Downhole equipment, tools and assembly procedures for the drilling, tie-in and completion of vertical cased oil wells connected to liner-equipped multiple drainholes
10/31/1995US5462118 Method for enhanced cleanup of horizontal wells
10/18/1995EP0677640A1 Improvements in or relating to steerable rotary drilling systems
10/18/1995EP0677137A1 Data and signal transmitting installation for controlling and monitoring underwater ramming and cutting-off machinery, or the like.
10/10/1995US5456316 Downhole signal conveying system
10/03/1995US5454666 Method for disposing of unwanted gaseous fluid components within a solid carbonaceous subterranean formation
10/03/1995US5454430 Lateral wellbore completion apparatus
09/1995
09/28/1995WO1995025607A1 Waste disposal in subterranean earth formations
09/27/1995EP0649352A4 Waste disposal in hydraulically fractured earth formations.
09/26/1995CA2020229C Well treatment method
09/05/1995US5447202 Setting tool and related method
09/05/1995US5447201 Well completion system
08/1995
08/31/1995DE4294552C2 Clearing of plug to restore well flow
08/30/1995EP0557364B1 Process for cleaning and degreasing, premix for use at the process and cleaning composition
08/30/1995CN2206348Y Wheel type truck
08/22/1995US5443120 Method for improving productivity of a well
08/15/1995US5441112 Integrated base for oil drilling and production work
08/09/1995EP0666120A1 Method for gaining place in a dump for fluid waste
08/08/1995US5439054 Method for treating a mixture of gaseous fluids within a solid carbonaceous subterranean formation
08/08/1995US5439051 Lateral connector receptacle
08/08/1995CA2028010C System to deal with, extend and repair undersea lines, worked by remotely operated vehicle
08/08/1995CA2002806F Rock anchor and method of manufacture
07/1995
07/27/1995CA2140234A1 Scoophead running tool
07/25/1995US5435400 Lateral well drilling
07/13/1995WO1995018911A1 Formation injection tool for down-bore in-situ disposal
07/11/1995US5431236 Method for processing solid material for disposal in an underground porous formation
07/05/1995CN1029254C Method and system for controlling travelling body so as to move forward along predetermined route of movement of travelling body
06/1995
06/27/1995US5427177 Multi-lateral selective re-entry tool
06/21/1995EP0621811B1 Improved method of disposal of contaminated cuttings
06/20/1995US5425429 Method and apparatus for forming lateral boreholes
06/20/1995US5425416 Formation injection tool for down-bore in-situ disposal of undesired fluids
06/13/1995US5423387 Method for sidetracking below reduced-diameter tubulars
06/07/1995EP0656459A1 Method for treating oil wells
06/01/1995WO1995014543A1 A method for disposing of drilling wastes
05/1995
05/30/1995CA2058566C Harness method and apparatus
05/02/1995US5411082 Scoophead running tool
04/1995
04/26/1995EP0649352A1 Waste disposal in hydraulically fractured earth formations
04/18/1995US5408325 Apparatus for measuring the profile of a moving object
04/11/1995US5405224 Subterranean disposal of liquid and slurried solids wastes
04/11/1995US5405223 Method for treating drill cuttings during oil and gas drilling
04/04/1995US5402857 Oil and gas well cuttings disposal system
03/1995
03/14/1995US5396960 Vent gas flame suppressing apparatus for offshore oil and gas producing platforms
02/1995
02/28/1995US5392862 Flow control sub for hydraulic expanding downhole tools
02/28/1995US5392856 Slickline setting tool and bailer bottom for plugback operations
02/22/1995EP0639240A1 Microencapsulated oil field chemicals and process for their use.
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