| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
|---|
| 04/13/1995 | WO1995009964A1 Method and apparatus for sealing and transferring force in a wellbore |
| 04/12/1995 | EP0647764A2 Well treating system with pressure readout at surface |
| 04/12/1995 | EP0647763A2 Blowout preventer with removable packer |
| 04/11/1995 | US5405467 Rubber riveting of molded parts |
| 04/11/1995 | US5404956 For use in setting a packer in a well bore |
| 04/11/1995 | US5404953 Blow-out prevention device for shutting off an annulus between a drill column and a well wall when drilling for oil or gas |
| 04/11/1995 | US5404951 Well treatment with artificial matrix and gel composition |
| 04/11/1995 | US5404950 Enhanced oil recovery |
| 04/11/1995 | US5404947 Pre-formed stress rings for inflatable packers |
| 04/11/1995 | US5404946 Wireline-powered inflatable-packer system for deep wells |
| 04/11/1995 | US5404945 Device for controlling the flow of fluid in an oil well |
| 04/11/1995 | US5404832 Wellhead connector |
| 04/08/1995 | CA2133800A1 Well treating system with pressure readout at surface |
| 04/06/1995 | DE4335290A1 Method of sealing soil bodies and arrangement for carrying out this method |
| 04/05/1995 | EP0646216A1 Stabilizing compositions and methods for stabilizing subterranean formations. |
| 04/05/1995 | CN2193920Y Simple casing joint |
| 04/04/1995 | US5402849 Use of dual density spacer fluids to improve cementing efficiency in horizontal wellbores |
| 04/04/1995 | US5402846 Pumping foamable thermosetting mixture into reservoir to fracture formation, igniting and combusting mixture to form porous solid which props fracture and increases conductivity of reservoir |
| 04/04/1995 | CA2065175C Wellhead bowl protector |
| 04/04/1995 | CA1335098C Manifold arrangement for use with a top drive power unit |
| 03/29/1995 | CN1028045C Subsea template |
| 03/29/1995 | CA2131398A1 Straddle inflatable packer system |
| 03/29/1995 | CA2130958A1 Inflatable packer with protective rings |
| 03/28/1995 | US5401104 Rod guide assembly for rotary applications |
| 03/28/1995 | US5400857 Oilfield tubular shear ram and method for blowout prevention |
| 03/28/1995 | US5400855 In a well bore |
| 03/22/1995 | EP0643794A1 Method of creating a wellbore in an underground formation. |
| 03/22/1995 | EP0643793A1 Blowout preventer opening mechanism |
| 03/22/1995 | EP0485585B1 Automated scraping unit |
| 03/22/1995 | CN2192720Y Magnetic stickiness oil water well sealing apparatus |
| 03/22/1995 | CN2192719Y Direct stand seal type hydraulic bridge plug |
| 03/21/1995 | US5398944 Sealing system for reciprocating rod |
| 03/21/1995 | US5398761 Subsea blowout preventer modular control pod |
| 03/21/1995 | US5398755 Stress rings for inflatable packers |
| 03/16/1995 | WO1995007431A1 Sealing connection system having rotatably mounted tension means |
| 03/16/1995 | CA2168541A1 Sealing connection system having rotatably mounted tension means |
| 03/15/1995 | EP0643195A2 Rubber riveting of molded parts for blow-out preventers |
| 03/15/1995 | EP0491964B1 Apparatus for injecting soil conditioning fluid |
| 03/14/1995 | US5396954 Subsea inflatable packer system |
| 03/14/1995 | US5396953 For use in a wellbore |
| 03/14/1995 | CA2055421C Trenchless pipeline replacement |
| 03/09/1995 | DE4429136A1 Multi-level packer system (MLPS) for obtaining groundwater samples as well as physical, chemical and geophysical measured values from exactly defined depths |
| 03/08/1995 | EP0641916A2 Method and apparatus for drawing gas and/or liquid samples from different layers |
| 03/08/1995 | CN2191275Y High-pressure casinghead |
| 03/08/1995 | CN2191274Y Accumulation type automatic well-head releasing packing of pumping unit |
| 03/08/1995 | CN2191273Y Theft-proof sealing device for well head |
| 03/07/1995 | US5394943 Subsurface shutdown safety valve and arrangement system |
| 03/07/1995 | US5394939 Well head stuffing box leak detector and container |
| 03/01/1995 | EP0640742A2 Method and device for influencing a liquid present in the soil |
| 03/01/1995 | CN2190693Y Involutive smooth rod clip |
| 02/28/1995 | US5392861 Residual pollution containment device and method of cleaning a wireline |
| 02/28/1995 | US5392853 Plugging system for boreholes |
| 02/28/1995 | US5392852 Sub-surface release plug assembly with primary and secondary release mechanisms |
| 02/28/1995 | CA2130951A1 Coiled tubing operated full opening completion tool system |
| 02/26/1995 | CA2141141A1 Safety cap for an artesian well |
| 02/23/1995 | WO1995005522A1 Method and apparatus for setting hydraulic packers and for placing a gravel pack in a well |
| 02/22/1995 | EP0639689A2 Multiple stage well cementing apparatus |
| 02/21/1995 | US5390740 Method and apparatus to recycle production well casing vapor |
| 02/21/1995 | US5390738 Inflatable packer inner bladder retention and seal |
| 02/21/1995 | US5390737 Downhole tool with sliding valve |
| 02/21/1995 | US5390736 Anti-rotation devices for use with well tools |
| 02/21/1995 | US5390735 Full bore lock system |
| 02/18/1995 | CA2130302A1 Method and apparatus for the multiple stage cementing of a casing string in a well |
| 02/14/1995 | US5388648 Method and apparatus for sealing the juncture between a vertical well and one or more horizontal wells using deformable sealing means |
| 02/14/1995 | US5388639 Wellhead tubing rotator |
| 02/14/1995 | CA2036947C Well casing hanger with wide temperature range seal |
| 02/09/1995 | WO1995003853A1 Oil well fire snuffer |
| 02/09/1995 | DE4427367A1 Vorrichtung zum Bestimmen der Kolbenlage in einem Ausbruchschieber Apparatus for determining the piston position in a blowout |
| 02/08/1995 | EP0637675A1 Electrical connection |
| 02/08/1995 | CN2189200Y Arrangement for cementing casings into boreholes with combined double sleeves |
| 02/07/1995 | CA2043756C Drill pipe bridge plug |
| 02/07/1995 | CA2017640C Well completions |
| 02/01/1995 | EP0636591A1 Cementitious composition for the cementation of oil wells |
| 01/31/1995 | US5385060 Device for the assembly or disassembly of probes in process pipes, tanks, etc. |
| 01/31/1995 | CA2083054C Foam for improving sweep efficiency in subterranean oil-bearing formations |
| 01/31/1995 | CA2021672C Coiled tubing velocity string hangoff method and apparatus |
| 01/31/1995 | CA2008913C Cement head and plug |
| 01/27/1995 | CA2101299A1 Vertical bore hole system and method for waste storage and energy recovery |
| 01/25/1995 | EP0635622A1 A landing nipple |
| 01/25/1995 | EP0635621A1 A lock mandrel |
| 01/24/1995 | US5383520 For use on coiled tubing in a well bore |
| 01/24/1995 | US5383519 Apparatus for rotating a tubing string of a pumping wellhead |
| 01/17/1995 | US5382290 Conversion of oil-base mud to oil mud-cement |
| 01/17/1995 | US5381862 Coiled tubing operated full opening completion tool system |
| 01/14/1995 | CA2127823A1 Reinforcing slat for inflatable packer |
| 01/11/1995 | CN2187225Y Bank head device for well logging |
| 01/11/1995 | CN2187223Y Plug-in casing head |
| 01/10/1995 | US5379844 Offshore platform well system |
| 01/10/1995 | US5379843 Side-tracking cement plug |
| 01/10/1995 | US5379841 Injection of copolymer based on vinyl acetamide and acrylamidoalkylenesulfonate |
| 01/10/1995 | US5379840 High temperature well cementing with low grade blast furnace slag |
| 01/10/1995 | US5379835 Well tool |
| 01/10/1995 | CA2075248C Module of satellite tree and flow line structure for interconnection of a satellite well to a subsea production system |
| 01/05/1995 | WO1995000740A1 Tool for use in wellbore operations |
| 01/05/1995 | WO1995000739A1 Selective zonal isolation of oil wells |
| 01/05/1995 | WO1995000738A1 Inflatable reinforced downhole packer |
| 01/05/1995 | CA2164336A1 Inflatable reinforced downhole packer |
| 01/05/1995 | CA2155206A1 Tool for use in wellbore operations |
| 01/04/1995 | CN2186828Y Double-cone thermal expansion spacer |
| 01/03/1995 | US5377762 Bore selector |