Patents for E21B 41 - Equipment or details not covered by groups (7,984) |
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02/15/1994 | US5285847 For agitating sand and gravel particles within well shafts |
02/15/1994 | CA1327036C System and method for providing multiple wells from a single wellbore |
02/09/1994 | EP0581838A1 Engine for performing subsea operations and devices driven by such an engine |
02/08/1994 | US5285204 Coil tubing string and downhole generator |
02/08/1994 | CA2015318C Power sources for downhole electrical heating |
02/01/1994 | CA2079536A1 Method and apparatus for disposing of water at gas wells |
01/26/1994 | EP0579788A1 Ablating gelatin pig and method for use in tubulars |
01/25/1994 | US5280825 Device and installation for the cleaning of drains, particularly in a petroleum production well |
01/20/1994 | WO1994001232A1 Waste disposal in hydraulically fractured earth formations |
01/20/1994 | CA2139639A1 Waste disposal in hydraulically fractured earth formations |
01/11/1994 | US5277519 Well drilling cuttings disposal |
01/11/1994 | US5277386 Hose and cable conveyor |
01/11/1994 | US5277250 For injecting a liquid treatment chemical |
01/11/1994 | CA1325969C Conduit or well cleaning and pumping device and method of use thereof |
01/04/1994 | US5275038 Downhole reeled tubing inspection system with fiberoptic cable |
12/29/1993 | EP0469133B1 Device for delivering corrosion or deposition inhibiting agents into a well by means of an auxiliary delivery tube |
12/28/1993 | US5273376 Back-up connector release tool |
12/28/1993 | US5273116 Firing mechanism for actuating wellbore tools |
12/14/1993 | US5269384 Method and apparatus for cleaning a bore hole |
12/14/1993 | US5269383 Navigable downhole drilling system |
12/09/1993 | WO1993024729A1 Portable oil-drilling waste recovery system |
12/09/1993 | CA2136729A1 Portable oil-drilling waste recovery system |
11/30/1993 | US5265682 Steerable rotary drilling systems |
11/24/1993 | EP0571257A1 Process for the treatment and the transport of natural gas coming from a well |
11/23/1993 | EP0579788A4 Ablating gelatin pig and method for use in tubulars. |
11/23/1993 | CA1324574C Device and method for remote connection and installation of a welded coupler |
11/16/1993 | US5261490 Method for dumping and disposing of carbon dioxide gas and apparatus therefor |
11/11/1993 | WO1993022537A1 Microencapsulated oil field chemicals and process for their use |
11/02/1993 | US5257663 For use in a well |
11/02/1993 | CA2031031C System for the production of crude oil by the injection of treatment fluid |
10/27/1993 | EP0507925A4 Hydraulic embedment of waste in subterranean formations |
10/14/1993 | WO1993020328A1 Cuttings processing system |
10/13/1993 | EP0553134A4 A method of disposing of drilling wastes |
10/12/1993 | US5251697 Adding to said water non-compressible solids |
10/06/1993 | EP0496850A4 Drill cuttings disposal method and system |
10/05/1993 | US5251286 Method for estimating formation permeability from wireline logs using neural networks |
10/05/1993 | US5250175 Vaporization, removal; water pollution control |
10/05/1993 | US5249891 Guideline system for underwater observation camera systems |
09/28/1993 | US5248005 Self-propelled drilling module |
09/22/1993 | EP0561492A2 Method for estimating formation permeability from wireline logs using neural networks |
09/21/1993 | US5246075 Guide post latching mechanism |
09/21/1993 | US5246074 Slip stream device with adjustable choke, and method of choking a fluid flow path |
09/17/1993 | CA2078402A1 Method for estimating formation permeability from wireline logs using neural networks |
09/08/1993 | EP0558534A1 Well completion system |
09/01/1993 | EP0557364A1 Process for cleaning and degreasing, premix for use at the process and cleaning composition. |
08/24/1993 | US5238664 Slurrying insoluble tailings with water or waste solutions of sodium carbonate and/or bicarbonate, adding alkali or alkaline earth metal hydroxide, pumping into well connected to mine cavity, dispersing, settling, recovering enriched liquor |
08/24/1993 | US5238070 Differential actuating system for downhole tools |
08/24/1993 | US5237857 Down-hole liquid detecting apparatus |
08/19/1993 | WO1993016267A1 Pulling and connecting tool for subsea conduits |
08/19/1993 | WO1993015361A3 Removal of contaminants |
08/17/1993 | US5236047 Electrically operated well completion apparatus and method |
08/17/1993 | US5236036 Device for delivering corrosion or deposition inhibiting agents into a well by means of an auxiliary delivery tube |
08/05/1993 | WO1993015361A2 Removal of contaminants |
08/05/1993 | WO1993015306A1 A subsurface well tool actuator |
08/05/1993 | WO1993015305A1 Pressurized chemical injection system |
08/05/1993 | CA2127703A1 Removal of contaminants |
08/04/1993 | EP0553134A1 A method of disposing of drilling wastes. |
07/27/1993 | US5230383 Electrically actuated well annulus safety valve |
07/22/1993 | WO1993013882A1 Improved method of disposal of contaminated cuttings |
07/21/1993 | CN2138693Y Sand-proof insulation shed for drilling rig |
07/20/1993 | US5228509 Device for protecting wells from corrosion or deposits caused by the nature of the fluid produced or located therein |
07/20/1993 | US5228508 Perforation cleaning tools |
07/20/1993 | CA1320481C Thermomechanical electrical generator/power supply for a downhole tool |
07/15/1993 | DE4200502A1 Verbesserte entsorgung von kontaminiertem bohrklein aus geologischen bohrungen mit mineraloel-enthaltenden bohrspuelsystemen Improved disposal of contaminated drill cuttings from geological drilling with mineral oil-containing drilling fluids |
07/14/1993 | EP0551163A1 Control apparatus for downhole tools |
07/13/1993 | US5226749 Waste disposal in hydraulically fractured earth formations |
07/13/1993 | US5226494 Subsurface well apparatus |
07/13/1993 | US5226491 Solenoid operated blanking block valve |
07/08/1993 | WO1993013292A1 Method and device for reestablishment of circulation in an operating well |
07/08/1993 | WO1993013291A1 Arrangement for removing drill cuttings in connection with well drilling in the sea bottom |
07/06/1993 | US5224558 Down hole drilling tool control mechanism |
07/06/1993 | US5224541 Use of profile control agents to enhance water disposal |
06/30/1993 | CN1021486C Method for building deep level base-rock marker and level base-rock marker |
06/15/1993 | US5219456 Well test burner |
06/10/1993 | WO1993011305A1 Device for deploying a barrier structure in a body of water |
05/25/1993 | US5213446 Adding a crosslinkable polymer and a crosslinking agent |
05/19/1993 | EP0541804A1 System for supporting drive of excavating type underground digging machine |
05/13/1993 | WO1993009369A1 Gravel-packed pipeline and method and apparatus for installation thereof |
05/13/1993 | CA2121479A1 Gravel-packed pipeline and method and apparatus for installation thereof |
05/12/1993 | EP0541363A1 Guide post interchangeability mechanism operated by remotely controlled vehicle |
05/11/1993 | US5209946 Treatment of tubulars with gelatin containing magnetic particles |
05/11/1993 | US5209605 Gravel-packed pipeline and method and apparatus for installation thereof |
05/11/1993 | US5209301 Multiple phase chemical injection system |
05/11/1993 | US5209300 Pressure regulated chemical injection system |
05/11/1993 | US5209299 Multiple chamber chemical injection system |
05/11/1993 | US5209298 Pressurized chemical injection system |
05/06/1993 | CA2082104A1 Guide post interchangeability mechanism operated by remotely controlled vehicle |
05/04/1993 | US5207534 Method for conducting offshore well operations |
05/04/1993 | US5207272 Electrically actuated well packer |
05/04/1993 | CA1317098C Viscous oil recovery by removing fines |
04/29/1993 | WO1993008368A1 Pressure pulse generator |
04/29/1993 | DE4235936A1 Underground pipes jacking mechanism - has drive set with axial piston hydraulic motor with rams on drive head tubular housing |
04/22/1993 | DE4134609A1 Druckimpulserzeuger Pressure pulse generator |
04/22/1993 | DE4133531A1 Deep well water regeneration - has pulsed flow of medium through the filter w.r.t. pH values and filter resistance with independent action on separate sections |
04/20/1993 | US5203414 Method of anchoring a device in a wellbore including opening an orifice between two chambers in response to an electrical signal and moving a piston in response to hydrostatic pressure when the orifice is opened |
04/20/1993 | US5203408 Tool saver |
04/13/1993 | US5202522 Deep well storage of radioactive material |
04/13/1993 | US5202194 Apparatus and method for providing electrical power in a well |
04/13/1993 | US5201611 Pressure equalizer for use at deep sea |
04/13/1993 | US5201375 Downhole drilling tool system |