| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 07/23/1992 | WO1992012554A1 Connecting apparatus |
| 07/23/1992 | WO1992012325A1 Stable suspension and use thereof for recovering hydrocarbons |
| 07/22/1992 | EP0495758A1 A torque limiter device for gas hydraulic actuators |
| 07/22/1992 | EP0495437A2 Hydraulic packoff and casing hanger installation tool |
| 07/22/1992 | EP0495274A1 Supported-lip low interference metal stab seal |
| 07/22/1992 | EP0494981A1 Cementing apparatus |
| 07/22/1992 | CN2110709U Sealing device in transmission shaft of power drilling tool |
| 07/21/1992 | US5131790 Method and apparatus for installation of an outer-cased piling |
| 07/21/1992 | US5131474 Mobile combined oxygen-free work compartment and fire extinguisher for oil well blowouts |
| 07/21/1992 | US5131473 Controlled rate well cementing tool |
| 07/21/1992 | US5131468 Packer slips for CRA completion |
| 07/21/1992 | CA1305469C Method and apparatus for deepwater drilling |
| 07/21/1992 | CA1305407C Method and apparatus for manipulating a well bore liner |
| 07/19/1992 | CA2059573A1 Coiled tubing set inflatable packer, bridge plug and releasing tool therefor |
| 07/17/1992 | CA2059211A1 Torque limiter device for gas hydraulic actuators |
| 07/15/1992 | EP0494748A2 Cementing a cylinder in a bore |
| 07/15/1992 | EP0494739A2 Directional drilling method |
| 07/14/1992 | US5129660 Seal assembly for a well housing hanger structure |
| 07/14/1992 | US5129460 Guide base cover |
| 07/14/1992 | US5129458 Treating an underground formation |
| 07/14/1992 | US5129454 Multi-string packers |
| 07/14/1992 | US5129453 Quick set well packer |
| 07/14/1992 | CA1305049C Wellhead slip and seal assembly |
| 07/14/1992 | CA1305048C Blowout preventer |
| 07/12/1992 | CA2059161A1 Retrievable packer |
| 07/07/1992 | US5127623 Inner seal for ram-type blowout preventer |
| 07/07/1992 | US5127478 Casing suspension system |
| 07/07/1992 | US5127473 Repair of microannuli and cement sheath |
| 07/07/1992 | US5127472 Indicating ball catcher |
| 07/07/1992 | CA1304678C Sub-surface release plug assembly |
| 07/07/1992 | CA1304676C Process for selective placement of polymer gels for profile control in thermal recovery |
| 07/07/1992 | CA1304626C Polish rod centralizer |
| 07/01/1992 | EP0491964A1 Apparatus for injecting soil conditioning fluid |
| 07/01/1992 | CN2108792U Automatic deviation regulating sealer for sucker rod of oil well |
| 06/30/1992 | US5125620 Ram type blowout preventer having improved ram front packing |
| 06/30/1992 | US5125455 Primary cementing |
| 06/30/1992 | CA1304351C Method and apparatus for cementing a production conduit within an underground arcuate bore |
| 06/30/1992 | CA1304285C Deployment/retrieval method and apparatus for well tools used with coiled tubing |
| 06/23/1992 | US5123487 Repairing leaks in casings |
| 06/23/1992 | CA1304064C Gate value for air lock |
| 06/23/1992 | CA1303976C Method for installing a liner within a well bore |
| 06/23/1992 | CA1303975C Wellhead slip and seal assembly |
| 06/23/1992 | CA1303841C Reducing permeability of highly permeable zones in subterranean formations |
| 06/17/1992 | EP0489816A1 Well casing flotation device and method |
| 06/16/1992 | US5121797 Methods and apparatus for shutting in a burning oil well |
| 06/16/1992 | US5121796 Oil well spill trough |
| 06/16/1992 | US5121795 Terminating the flow of fluid through a gravel pack in a wellbore, or from a highly permeable portion of a fracture in a suterranean formation |
| 06/16/1992 | US5121794 Waste fluid containment and recovery apparatus |
| 06/16/1992 | US5121793 Capping equipment for blowout well |
| 06/16/1992 | CA1303432C Remotely controlled assembling and interlocking device |
| 06/11/1992 | WO1992009785A1 Device for a down-hole assembly |
| 06/11/1992 | WO1992009784A1 Plugs for well logging operations |
| 06/11/1992 | WO1992009723A1 Device for the assembly or disassembly of probes in process pipes, tanks, etc. |
| 06/10/1992 | EP0489625A1 Improved clamp and clamp supporting apparatus |
| 06/10/1992 | EP0489188A1 Unit for making-up and breaking out annular blow out preventers of threaded type |
| 06/10/1992 | EP0332622B1 Subsea systems and devices |
| 06/09/1992 | US5119887 Oil well head fire cap |
| 06/09/1992 | CA1303093C Collet connector |
| 06/02/1992 | US5117915 Well casing flotation device and method |
| 06/02/1992 | US5117913 Chemical injection system for downhole treating |
| 06/02/1992 | US5117912 Method of positioning tubing within a horizontal well |
| 06/02/1992 | US5117910 Packer for use in, and method of, cementing a tubing string in a well without drillout |
| 06/02/1992 | US5117906 Compact, retrievable packer |
| 06/02/1992 | CA1302238C Liner setting assembly |
| 06/02/1992 | CA1302237C Inflatable tool for a subterranean well |
| 06/02/1992 | CA1302236C Methods and apparatus for field blasting of earth formations using inflatable devices for suspending explosives in boreholes |
| 06/02/1992 | CA1302234C Pressure lock bleeder for a well head giving access to a hydrocarbon deposit or to an underground store of gas |
| 05/29/1992 | WO1992008915A1 Packing assembly for oilfield equipment and method |
| 05/26/1992 | US5116017 Annular sealing element with self-pivoting inserts for blowout preventers |
| 05/26/1992 | US5115869 Apparatus for extinguishing oil well fires and separating oil/gas streams thereof |
| 05/26/1992 | US5115866 Soil vapor well construction |
| 05/26/1992 | US5115862 Electrical grounding device for wells |
| 05/26/1992 | CA1301637C Remote anchoring and tensioning system for an elongated element |
| 05/26/1992 | CA1301635C Method of well construction |
| 05/20/1992 | CN1061258A Process for enhanced delayed in situ gelation of chromium polyacrylamide gels |
| 05/19/1992 | US5114158 Packing assembly for oilfield equipment and method |
| 05/19/1992 | US5114117 Connector for fluid carrying conduits |
| 05/19/1992 | US5113948 Oil well fire extinguisher with internal pipe crimper |
| 05/19/1992 | US5113940 Well apparatuses and anti-rotation device for well apparatuses |
| 05/19/1992 | US5113939 Single bore packer with dual flow conversion for gas lift completion |
| 05/19/1992 | US5113938 Whipstock |
| 05/19/1992 | US5113936 Wellhead seal probe |
| 05/19/1992 | CA1301302C Method and device for increasing the transmission coefficient to geological formations of the energy generated by a seismic source in a well |
| 05/19/1992 | CA1301056C Manual port closing tool for well cementing |
| 05/13/1992 | EP0485243A1 A release mechanism |
| 05/13/1992 | CN2104290U Double-action two-way sealing separating unit |
| 05/13/1992 | CN2104289U High-pressure sealing device of drill stem thread joint |
| 05/13/1992 | CN2104288U Light rod seal and centering unit for oil field oil-well portal |
| 05/12/1992 | US5112140 Seal assembly for reciprocating members |
| 05/12/1992 | US5111884 Method and apparatus for reworking wells |
| 05/12/1992 | US5111879 Sanitary locking lip split well seal |
| 05/12/1992 | CA1300492C Apparatus for treating well bores |
| 05/12/1992 | CA1300371C Well bore measurement tool |
| 05/06/1992 | WO1992008034A1 Process for enhanced delayed in situ gelation of chromium polyacrylamide gels |
| 05/06/1992 | CN2103635U Antiseizing slip disjointing device |
| 05/06/1992 | CN2103634U Automatic security device for oil well |
| 05/05/1992 | US5110144 Casing hanger seal assembly |
| 05/05/1992 | US5109926 Wellbore packer with shearable anti-rotation locking member |
| 05/05/1992 | US5109925 Multiple stage inflation packer with secondary opening rupture disc |
| 05/05/1992 | US5109923 Wellhead bowl protector |