| Patents for E21B 41 - Equipment or details not covered by groups (7,984) |
|---|
| 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 |