| Patents for E21B 43 - Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells (64,186) |
|---|
| 05/04/2000 | CA2314873A1 Submersible pump assembly for use in a well |
| 05/03/2000 | EP0997608A2 A device to optimize the yield of oil wells |
| 05/03/2000 | EP0997515A1 Polymeric earth support fluid compositions and method for their use |
| 05/03/2000 | EP0996812A1 Deformed multiple well template and process of use |
| 05/03/2000 | EP0968353A4 Full bore gun system |
| 05/03/2000 | CN2376535Y Efficiency-increasing perforating gun for oil gas well |
| 05/03/2000 | CN1252117A Prepacked flush joint well screen |
| 05/02/2000 | US6056511 Connection module for a submergible pumping system and method for pumping fluids using such a module |
| 05/02/2000 | US6056061 Apparatus for completing a subterranean well and associated methods |
| 05/02/2000 | US6056059 Apparatus and method for establishing branch wells from a parent well |
| 05/02/2000 | US6056057 Heater well method and apparatus |
| 05/02/2000 | US6056054 Method and system for separating and injecting water in a wellbore |
| 05/02/2000 | US6056050 Apparatus for enhanced recovery of viscous oil deposits |
| 04/27/2000 | WO2000023689A1 Gas disposal system |
| 04/27/2000 | WO2000023688A1 Enhanced oil recovery by altering wettability |
| 04/27/2000 | WO2000000380A3 Connector for connecting a fluid pipe within a swivel stack |
| 04/26/2000 | EP0871816B1 Release mechanism |
| 04/26/2000 | CN2375765Y Automatic chemical-feeding pot for oil well |
| 04/25/2000 | US6055213 Subsurface well apparatus |
| 04/25/2000 | US6054496 Separating distillable components of heavy crude oil by distillation and solvent deasphalting and converting asphaltic residual portion of heavy crude oil in fluidized bed to heat or steam or electricity or synthesis gas |
| 04/25/2000 | US6053964 Apparatus and method for applying a leaching solution to ore |
| 04/25/2000 | US6053250 Gravel pack apparatus |
| 04/25/2000 | US6053249 Method and apparatus for injecting gas into a subterranean formation |
| 04/25/2000 | US6053248 Methods of completing wells utilizing wellbore equipment positioning apparatus |
| 04/25/2000 | US6053246 High flow rate formation fracturing and gravel packing tool and associated methods |
| 04/25/2000 | US6053244 Release mechanism |
| 04/25/2000 | US6053199 Underwater recovery of fluids from submerged tank |
| 04/25/2000 | US6053111 Surface safe rig environment detonator |
| 04/25/2000 | CA2184888C Milling apparatus and method for well casing |
| 04/20/2000 | WO2000022280A1 Acoustic method (arwl) for applying an action on a well and on the layer of a field of mineral resources |
| 04/20/2000 | WO2000022279A1 Initiation of explosive devices |
| 04/20/2000 | WO2000004269A3 Subsea wellbore drilling system for reducing bottom hole pressure |
| 04/20/2000 | CA2286543A1 Retrievable bridge plug and retrieving tool |
| 04/19/2000 | EP0993540A1 Device and method for creating ramifications in a bore hole |
| 04/19/2000 | EP0993334A1 Fluids containing viscoelastic surfactant and methods for using the same |
| 04/19/2000 | EP0993332A1 Process for generating power including a combustion process |
| 04/19/2000 | EP0864032B1 Method of treating an underground formation |
| 04/19/2000 | EP0858548B1 Inflow regulation device for a production pipe for production of oil or gas from an oil- and/or gas reservoir |
| 04/19/2000 | CN1051518C Vessel for prodn. and/or loading/unloading and transport of hydrocarbons from offshore |
| 04/18/2000 | US6050789 Pump-in-pipe |
| 04/18/2000 | US6050747 Rotating connector for operative connection between a buoy and a floating vessel for the production of hydrocarbons |
| 04/18/2000 | US6050341 Downhole running tool |
| 04/18/2000 | US6050340 Downhole pump installation/removal system and method |
| 04/18/2000 | US6050336 Method and apparatus to isolate a specific zone |
| 04/18/2000 | US6050335 System for in-situ bitumen production comprising steam injection well system comprising lateral sections traversing bitumen bearing formation above thief zone such that tip of each lateral section protrudes from formation into thief zone |
| 04/18/2000 | CA2139700C Improved system, method and apparatus for production of crude oil |
| 04/18/2000 | CA2056966C Downhole measurements using very short fractures |
| 04/13/2000 | WO2000020820A2 Detonators for use with explosive devices |
| 04/13/2000 | WO2000000716A3 System and method for controlling fluid flows in oil or gas wells |
| 04/12/2000 | EP0839254B1 Branch boreholes |
| 04/12/2000 | EP0681640B1 Application of n,n-dialkylamides to reduce precipitation of asphalt from crude oil |
| 04/12/2000 | CN2373562Y Ceramics sand filter |
| 04/12/2000 | CN1250389A A method and device for the separation of a fluid in a well |
| 04/12/2000 | CN1250133A Supersonic pulse reflecting method to measure the depth of perforation |
| 04/12/2000 | CN1051355C Method for recovery of coal bed methane |
| 04/12/2000 | CN1051354C Method for recovery of coal bed methane with reduced inert gas fraction in produced gas |
| 04/12/2000 | CN1051335C Process for recovering and causing highly viscous petroleum products to flow |
| 04/11/2000 | US6049657 Marine pipeline heated with alternating current |
| 04/11/2000 | US6048462 Waste component removal from crude oil or gas |
| 04/11/2000 | US6048175 Multi-well computerized control of fluid pumping |
| 04/11/2000 | US6048134 Automatic aspirator air control system |
| 04/11/2000 | US6047774 System for drilling and completing multilateral wells |
| 04/11/2000 | US6047773 Apparatus and methods for stimulating a subterranean well |
| 04/11/2000 | US6047772 Control of particulate flowback in subterranean wells |
| 04/11/2000 | CA2214230C Method of fabricating a rod guide and a rod guide/sucker combination |
| 04/06/2000 | WO2000018681A1 Method for preparing a h2-rich gas and a co2-rich gas at high pressure |
| 04/05/2000 | EP0990087A1 Calliope oil production system |
| 04/05/2000 | CN1249796A Removing waste component from hydrocarbon fluid |
| 04/05/2000 | CN1249795A Waste component removal from crude oil or gas |
| 04/05/2000 | CN1051136C Method and apparatus for machining large angle keystone slot of petroleum casing |
| 04/04/2000 | US6047239 Formation testing apparatus and method |
| 04/04/2000 | US6046404 Subsea control cable |
| 04/04/2000 | US6045335 Differential pressure operated free piston for lifting well fluids |
| 04/04/2000 | US6044907 Two phase heat generation system and method |
| 04/04/2000 | US6044906 Inflatable tubular sleeve for tubing or obturating a well or pipe |
| 03/30/2000 | WO2000017526A1 Device and method for eliminating severe slugging in multiphase-stream flow lines |
| 03/30/2000 | WO2000017486A1 Method and system for separating and injecting gas and water in a wellbore |
| 03/29/2000 | EP0989306A1 Compression-pumping system with alternate operation of the compression section and its related process |
| 03/29/2000 | EP0989284A2 Underbalanced well completion |
| 03/29/2000 | EP0988440A1 Control and monitoring system for chemical treatment of an oilfield well |
| 03/29/2000 | EP0988093A1 A method and system for treating biodegradable waste material through aerobic degradation |
| 03/29/2000 | EP0870100B1 Flameless combustor and method |
| 03/29/2000 | EP0830494B1 Method for downhole cyclone separation |
| 03/29/2000 | CN2371338Y Explosio-proof screw out prevention perforating positioning measurer |
| 03/29/2000 | CN2371337Y Symmetric perforating fracturing composite bullet |
| 03/29/2000 | CN2371336Y Well head device |
| 03/29/2000 | CN2371329Y Stepped hole type eccentric injection well down-hole flow |
| 03/29/2000 | CN1248663A Section regulation process for interrupted water-injection depth of water injection well |
| 03/29/2000 | CN1248662A Single-barrel one-prop type vibration-insulation anti-ice well head platform |
| 03/28/2000 | US6043995 Method and apparatus for pulse width modulation of a power supply for increased transient stability in subsurface wellbore pumps |
| 03/28/2000 | US6043203 Compositions based on APG and ester quat surfactants |
| 03/28/2000 | US6041873 Non-cryogenic nitrogen for on-site downhole drilling and post drilling operations |
| 03/28/2000 | US6041860 Apparatus and method for performing imaging and downhole operations at a work site in wellbores |
| 03/28/2000 | US6041856 Real-time pump optimization system |
| 03/28/2000 | US6041803 Device and method for eliminating severe slugging in multiphase-stream flow lines |
| 03/28/2000 | CA2178856C Blowout preventer protector and method of using same during oil and gas well stimulation |
| 03/25/2000 | CA2248484A1 Back spin swivelling device for a progressive cavity pump |
| 03/22/2000 | EP0987400A1 Method and apparatus for remote control of multilateral wells |
| 03/22/2000 | EP0986692A1 Sub-sea pumping system and associated method |
| 03/22/2000 | EP0870196B1 Automatic well test system and method of operating the same |