| Patents for E21B 37 - Methods or apparatus for cleaning boreholes or wells (5,129) |
|---|
| 08/25/1987 | CA1225824A1 Method for liquifying chloride-based heavy brine well completion fluids |
| 08/20/1987 | DE3604598A1 Process for stimulating and cleaning deep bore wells |
| 08/04/1987 | US4683946 Method and apparatus for the installation and modification of oil well evacuation systems |
| 07/28/1987 | US4682657 Method and apparatus for the running and pulling of wire-line tools and the like in an oil or gas well |
| 06/23/1987 | US4675120 Methods of using strong acids modified with acid solutions |
| 06/09/1987 | US4671360 High impulse energy and liquid membrane scale removal |
| 06/09/1987 | US4671359 Apparatus and method for solids removal from wellbores |
| 06/09/1987 | US4671355 Wash tool for stimulating oil wells |
| 05/27/1987 | CN86201684U Screw wax scraper |
| 04/21/1987 | US4658902 Surging fluids downhole in an earth borehole |
| 04/14/1987 | US4657076 Chemical injection tube mounting structure for geothermal well |
| 04/07/1987 | US4655285 Plug for use in hot oil treatment of wells having paraffin deposits and method of use thereof |
| 03/10/1987 | US4648447 Casing scraper |
| 02/11/1987 | CN86105009A Installation devices for drill casings and like underground conduits |
| 01/27/1987 | US4638726 Load bearing swab cup |
| 01/13/1987 | CA1216516A1 Method for scale removal and scale inhibition in a well penetrating a subterranean formation |
| 01/08/1987 | DE3523477A1 Device for cleaning boreholes |
| 12/23/1986 | CA1215642A1 Method and apparatus for removing oil well paraffin |
| 12/16/1986 | USRE32304 Adding anti corrosive material to oil well; gravity system |
| 12/02/1986 | US4625803 Method and apparatus for injecting well treating liquid into the bottom of a reservoir interval |
| 12/02/1986 | US4625799 Cleaning tool |
| 12/02/1986 | US4625797 Chemical injection tube mounting structure for a geothermal well |
| 11/19/1986 | CN86102133A Process for dissolution of sulphur and dissolvent therefor |
| 11/11/1986 | US4621693 Apparatus and methods for pumping solids and undesirable liquids from a well bore |
| 10/28/1986 | US4619325 Well surging method and system |
| 10/28/1986 | US4619323 Method for conducting workover operations |
| 10/08/1986 | CN85203838U Drip by automatic piston control |
| 09/23/1986 | US4612986 Well cleaning apparatus and treating method |
| 09/23/1986 | US4612984 Apparatus for the running and pulling of wire-line tools and the like in an oil or gas well |
| 09/16/1986 | US4611615 Fluid treatment apparatus and method |
| 09/09/1986 | CA1211043A1 Differential vent and bar actuated circulating valve and method |
| 09/02/1986 | US4609045 Method and apparatus for cleaning the screen inlet portion of a water well casing |
| 09/02/1986 | US4609041 Well hot oil system |
| 08/12/1986 | US4605069 Method for producing heavy, viscous crude oil |
| 08/05/1986 | US4603739 Process for cleaning an oil field well bore hole using an internal casing wiper |
| 06/10/1986 | US4594170 Hydrogen peroxide |
| 05/20/1986 | US4589483 Well tool |
| 04/15/1986 | US4582131 Submersible chemical injection pump |
| 04/08/1986 | US4580635 Automatic drill pipe inside wiper |
| 04/08/1986 | US4580634 Method and apparatus for distributing fluids within a subterranean wellbore |
| 03/18/1986 | US4576231 Method and apparatus for combating encroachment by in situ treated formations |
| 03/11/1986 | US4574830 Apparatus for pigging hydrocarbon product flowlines |
| 02/25/1986 | USRE32085 Tubular member interior wiper |
| 02/25/1986 | US4572291 Well casing scraper |
| 02/05/1986 | EP0169891A1 Corrosion protection anode |
| 02/04/1986 | US4568126 Method and machine for removing blockage and silt from abandoned auger holes |
| 01/14/1986 | CA1199250A1 Organic gels |
| 12/17/1985 | US4558738 Oil well casing scraper |
| 11/12/1985 | US4552220 Oil well evacuation system |
| 10/08/1985 | CA1194788A1 Well tool |
| 09/24/1985 | US4543193 Process for preventing the precipitation of elementary sulphur in riser pipes of probes for natural gas |
| 09/03/1985 | US4538682 Method and apparatus for removing oil well paraffin |
| 08/27/1985 | US4537700 Organic gels |
| 08/20/1985 | CA1192127A1 Method of assisting surface lift of heated subsurface viscous petroleum |
| 08/15/1985 | WO1985003529A1 Corrosion protection anode |
| 07/23/1985 | US4530399 Stop device for well conduit |
| 07/16/1985 | US4529038 Differential vent and bar actuated circulating valve and method |
| 07/16/1985 | US4528896 Dynamic seals for gas and oil well swabs |
| 07/09/1985 | US4528041 Method for pigging hydrocarbon product flowlines |
| 07/09/1985 | CA1190142A1 Chemical injection system for offshore drilling rigs |
| 07/02/1985 | US4526667 Corrosion protection anode |
| 06/25/1985 | US4525263 Method for cleaning a corrosion protection anode |
| 05/28/1985 | US4519456 In a well bore perforation wash tool |
| 05/28/1985 | US4519451 Well treating equipment and methods |
| 05/21/1985 | US4518041 Hydraulic jet well cleaning assembly using a non-rotating tubing string |
| 05/07/1985 | US4515217 Perforating gun pressure activated sliding sleeve |
| 05/07/1985 | US4515212 Internal casing wiper for an oil field well bore hole |
| 03/05/1985 | USRE31842 Well washing tool and method |
| 02/26/1985 | US4501322 Hyper cleaning casing brush |
| 02/12/1985 | US4498536 Method of washing, injecting swabbing or flow testing subterranean wells |
| 02/12/1985 | CA1182392A1 Unplugging brine-submerged perforations in a well |
| 01/22/1985 | US4494607 Method of cleaning and inhibiting sucker rod corrosion |
| 11/27/1984 | US4484625 Well casing perforated zone washing apparatus |
| 11/06/1984 | US4481109 Solar heat treating of well fluids |
| 11/06/1984 | US4480695 Method of assisting surface lift of heated subsurface viscous petroleum |
| 11/06/1984 | US4480687 Side pocket mandrel system for dual chemical injection |
| 10/30/1984 | US4479538 Casing scraper and method for making the same |
| 09/25/1984 | US4473408 Cleaning pipeline interior with gelled pig |
| 09/11/1984 | US4470458 Well tool |
| 09/11/1984 | CA1174073A1 Methods and apparatus for well investigation and development |
| 07/17/1984 | CA1170987A1 Casing scraper and method for making the same |
| 06/26/1984 | US4456064 Well bore wall cleaner |
| 06/19/1984 | US4454912 Swab hoist use thereof in conveying crude oil and natural gas |
| 06/05/1984 | US4452307 For a wire line and impact device in loosening oil well tubing and casing |
| 05/29/1984 | US4450907 Cleaning system for packer removal |
| 05/15/1984 | US4448247 Geothermal well head clean out and shut off assembly |
| 04/17/1984 | US4442899 System for washing pipes |
| 04/10/1984 | US4441557 Method and device for hydraulic jet well cleaning |
| 04/03/1984 | US4440229 Oil well servicing processes |
| 03/27/1984 | US4438812 Brush tool for wells |
| 03/13/1984 | US4436148 Chemical treatment for oil wells |
| 03/13/1984 | CA1163553A1 Pump plug for use in well operations |
| 02/14/1984 | US4431058 Wash tool method for subterranean wells |
| 01/24/1984 | US4427061 Universal drift and retriever |
| 01/17/1984 | USRE31495 Hydraulic jet well cleaning method and apparatus |
| 10/18/1983 | US4410044 Method for orienting well casing and other tubular work objects and device therefor |
| 10/04/1983 | US4407367 Method for in situ recovery of heavy crude oils and tars by hydrocarbon vapor injection |
| 08/23/1983 | US4399868 Well treatment with nitrogen-generating heating solution |
| 08/09/1983 | CA1151534A1 Tool for controlling fluid flow from a tubing string into a low pressure earth formation |
| 07/20/1983 | EP0083957A1 Organic gels and method of cleaning pipelines by using said gels |