| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
|---|
| 10/27/1993 | EP0566615A1 Connecting apparatus. |
| 10/27/1993 | EP0451185B1 System and method for sealed connection between two abutting tube ends |
| 10/26/1993 | US5256001 Cylindrical system for in-situ treatment of underwater contaminated material |
| 10/26/1993 | US5255890 Ram type blowout preventer |
| 10/26/1993 | US5255746 Adjustable mandrel hanger assembly |
| 10/26/1993 | US5255743 Subsea |
| 10/20/1993 | EP0566290A1 Hydraulic set casing packer |
| 10/20/1993 | EP0566012A1 Cement used in deep drilling and method for making same |
| 10/20/1993 | CN2144174Y High-pressure polish rod sealing device capable of regulating well head offset of pumping well |
| 10/19/1993 | US5253952 Stabilizer for underground valve housing |
| 10/19/1993 | US5253713 Valving member |
| 10/19/1993 | US5253709 Method and apparatus for sealing pipe perforations |
| 10/19/1993 | US5253706 Release mechanism |
| 10/19/1993 | US5253705 Hostile environment packer system |
| 10/19/1993 | US5253519 Method and apparatus for in-situ measurement of ground heave characteristics |
| 10/15/1993 | CA2093485A1 Deep-drilling cement and process for the preparation thereof |
| 10/14/1993 | WO1993020329A1 Hydraulically actuated liner hanger arrangement and method |
| 10/13/1993 | EP0565323A1 Borehole stressed packer inflation system |
| 10/13/1993 | EP0565042A2 Process for reducing or complete setting of water production during drilling for oil and/or hydrocarbon gas recovery |
| 10/12/1993 | US5251870 Blowout preventer ram packer and wear insert |
| 10/12/1993 | US5251869 Rotary blowout preventer |
| 10/06/1993 | EP0564294A1 Squeeze cementing |
| 10/06/1993 | CN2143260Y Rubber spigot structure for casing of oil well |
| 10/05/1993 | US5249629 Full bore casing hanger running tool |
| 10/04/1993 | CA2093176A1 Hydraulic set casing packer |
| 09/30/1993 | WO1993019283A1 Anti-rotation devices for use in wellbores |
| 09/28/1993 | US5247999 Oil wellhead fire extinguishing apparatus having adjustable support feet and labyrinth module |
| 09/28/1993 | US5247997 Tubing hanger with a preloaded lockdown |
| 09/28/1993 | US5247996 Self preloading connection for a subsea well assembly |
| 09/28/1993 | CA2004386C Environmental monitoring well housing and protection method |
| 09/28/1993 | CA1322520C Method and apparatus for repairing wall casings and the like |
| 09/22/1993 | CN2142495Y Composite sealing device |
| 09/21/1993 | US5246074 Slip stream device with adjustable choke, and method of choking a fluid flow path |
| 09/21/1993 | US5246069 Self-aligning well apparatuses and anti-rotation device for well apparatuses |
| 09/21/1993 | US5246068 Apparatus for removing a wellhead cover from a well |
| 09/21/1993 | US5246067 Well leak catcher |
| 09/16/1993 | WO1993018274A1 A method and a device for sealing between a casing and a drill hole in rock drilling operations |
| 09/15/1993 | EP0559735A1 Plugs for well logging operations. |
| 09/14/1993 | US5244362 Chemical injector system for hydrocarbon wells |
| 09/14/1993 | US5244046 Coiled tubing drilling and service unit and method for oil and gas wells |
| 09/14/1993 | US5244044 Catcher sub |
| 09/14/1993 | US5244043 Controlled quantities of brine to precipitate scale; scale inhibitor to delay precipitation |
| 09/14/1993 | US5244040 Method and apparatus to determine wellhead level |
| 09/14/1993 | US5244038 Wellhead equipment |
| 09/08/1993 | CN2141836Y Quick well-head setting installation |
| 09/07/1993 | US5242022 Method and apparatus for isolating a zone of wellbore and extracting a fluid therefrom |
| 09/07/1993 | US5242019 For use in a well bore penetrating a subterranean formation |
| 09/07/1993 | US5242018 Cementing plug |
| 09/01/1993 | EP0558232A1 Well cement methods and compositions |
| 09/01/1993 | CN2141462Y Pull-push type thick liquid filling machine |
| 08/31/1993 | US5240081 Mudline subsea wellhead system |
| 08/31/1993 | US5240077 Voltage controlled hydraulic setting tool |
| 08/31/1993 | US5240076 Casing tension retainer |
| 08/31/1993 | US5240074 Placing resin in a wellbore with explosive, firing explosive to cure resin to plug slots; reversible |
| 08/26/1993 | DE4205152A1 Expansible seal for bore-hole - used for sealant injection into fractured rock e.g. in coal mine |
| 08/25/1993 | CN2140954Y Multi-functional joint |
| 08/24/1993 | US5238071 Oil well fire snuffer |
| 08/24/1993 | US5238064 Squeeze cementing |
| 08/20/1993 | CA2089854A1 Acid removable low density well cement compositions and methods |
| 08/18/1993 | EP0556007A1 Cementing head apparatus |
| 08/18/1993 | EP0556006A1 Cementing head apparatus |
| 08/17/1993 | US5236201 Reinforcement structure for inflatable downhole packers |
| 08/17/1993 | US5236047 Electrically operated well completion apparatus and method |
| 08/17/1993 | US5236037 Unitized wellhead system |
| 08/17/1993 | US5236035 Swivel cementing head with manifold assembly |
| 08/15/1993 | CA2061240A1 Rotating head |
| 08/14/1993 | CA2089473A1 Swivel cementing head with manifold assembly |
| 08/14/1993 | CA2089472A1 Swivel cementing head with manifold assembly having remote control valves and plug release plungers |
| 08/12/1993 | DE4202926A1 Flexible expanding tube for packing boreholes - comprises esp. flexible cross section and is covered with narrow mesh expanding wire netting |
| 08/11/1993 | CN2139987Y Water differential pressure switch closed separator |
| 08/10/1993 | US5234053 Reeled tubing counter assembly and measuring method |
| 08/10/1993 | US5234052 Cementing a casing string within a well bore |
| 08/05/1993 | WO1993015306A1 A subsurface well tool actuator |
| 08/05/1993 | WO1993015305A1 Pressurized chemical injection system |
| 08/05/1993 | WO1993015304A1 Straight bore metal-to-metal wellbore seal apparatus and method of sealing in a wellbore |
| 08/05/1993 | DE4216472C1 Investigation of heavy metal contaminated soils - includes sealing walls of borehole using mixts. of polymeric pyrrolidinium salts with alkali silicate(s) or with bentonite-modified montan wax emulsions an limiting boring speed |
| 08/05/1993 | DE4203106A1 Formation of long bodies from powder materials in the ground - uses lance with packer, which opens and closes to feed powder into chamber, and to compress powder and ground |
| 08/04/1993 | EP0554067A2 Geothermal wellhead having hanger spool with eccentric hanger seat |
| 08/04/1993 | EP0554013A1 Drill stem testing with tubing conveyed perforation |
| 08/04/1993 | EP0553566A1 Horizontal well completion method |
| 08/04/1993 | CN2139625Y Sealing device for oil-pumping polish rod |
| 08/04/1993 | CN2139624Y Packing for sealing polish rod |
| 08/03/1993 | US5232021 Probe member for undersea hydraulic coupling |
| 08/03/1993 | CA1320983C Tubular joint with seal |
| 08/03/1993 | CA1320903C Apparatus for use in wells |
| 07/31/1993 | CA2088292A1 Horizontal well completion methods |
| 07/29/1993 | DE4301985A1 Method repairing of cracks in concrete structure - by injecting liquid cement into drilled hole which extends beyond crack |
| 07/28/1993 | EP0552525A1 Hanger assembly |
| 07/28/1993 | CA2087462A1 Geothermal well apparatus and eccentric hanger spool therefor |
| 07/27/1993 | US5230383 Electrically actuated well annulus safety valve |
| 07/27/1993 | CA1320680C Cementing method and arrangement |
| 07/20/1993 | US5228519 Method and apparatus for extending pressurization of fluid-actuated wellbore tools |
| 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 | US5228506 Spill collection system for wellheads |
| 07/20/1993 | CA1320437C Method of placing a body of shape memory material within a cavity |
| 07/20/1993 | CA1320436C Wellhead structure and method of assembling same |
| 07/20/1993 | CA1320434C Method of casing off a producing formation in a well |
| 07/13/1993 | US5226494 Subsurface well apparatus |
| 07/13/1993 | US5226493 Well apparatus |
| 07/13/1993 | US5226492 Double seals packers for subterranean wells |