| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
|---|
| 05/05/1992 | CA1300047C Expansion hose means |
| 05/05/1992 | CA1300004C Blowout preventer |
| 05/05/1992 | CA1300003C Wellhead with safety valve for pumping a well |
| 05/05/1992 | CA1299999C Method of cementing a casing in a wellbore |
| 04/30/1992 | WO1992007165A1 Fluid couplings |
| 04/29/1992 | EP0482912A1 Downhole pump for formation testing |
| 04/29/1992 | EP0482874A1 Pump for inflating downhole packer |
| 04/28/1992 | US5107931 Temporary abandonment cap and tool |
| 04/28/1992 | CA1299620C Thermal protecting blanket for a well head control device |
| 04/22/1992 | CN2102368U Cement hole sealing device |
| 04/22/1992 | CN1060512A Selective placement of permeability-reducing material to inhibit fluid communication between near well bore interval and underlying aquifer |
| 04/21/1992 | US5106423 Ultrafine ground slag, water, dispersant, and accelerator |
| 04/21/1992 | US5106232 Method of in situ decontamination |
| 04/21/1992 | US5105888 Well casing hanger and packoff running and retrieval tool |
| 04/21/1992 | US5105884 Injecting carboxylate containing polymers, crosslinking agents, surfactants, solvents, foaming gas |
| 04/21/1992 | US5105883 Casing restriction sub |
| 04/21/1992 | US5105881 Formation squeeze monitor apparatus |
| 04/21/1992 | US5105879 Method and apparatus for sealing at a sliding interface |
| 04/21/1992 | CA1299094C Oil and gas well diversionary spool assembly |
| 04/16/1992 | WO1992006272A1 Fluid couplings and seals |
| 04/16/1992 | DE4032118A1 Well cleaning device sealed against well shaft wall - has inflatable cuffs or hoses and controls pressure of supplied medium w.r.t. pressure within enclosed chamber |
| 04/15/1992 | CN2101748U Rising to unsealing recoverable bridging plug |
| 04/15/1992 | CN2101747U Multifunctional blow-out preventing case for oil draw well |
| 04/15/1992 | CN2101746U Automatic quantitative liquid pouring into device for well head |
| 04/14/1992 | US5103915 Wellhead housing seal assembly for damaged sealing surfaces |
| 04/14/1992 | US5103911 Method and apparatus for perforating a well liner and for fracturing a surrounding formation |
| 04/14/1992 | US5103904 Sealing assembly for subterranean well packing unit |
| 04/14/1992 | US5103902 Non-rotational versa-trieve packer |
| 04/14/1992 | US5103901 Hydraulically operated well packer |
| 04/14/1992 | US5103900 High pressure adapter for well-heads |
| 04/14/1992 | CA1298779C Bottom hole shut-in tool |
| 04/13/1992 | WO1992007168A1 Selective placement of a permeability-reducing material to inhibit fluid communication between a near well bore interval and an underlying aquifer |
| 04/13/1992 | CA2086594A1 Selective placement of a permeability-reducing material to inhibit fluid communication between a near well bore interval and an underlying aquifer |
| 04/09/1992 | DE4129812A1 Closing up voids in mining or tunnel construction - involves container divided into two parts by plane of weakness enabling resins and hardeners to unite and expand |
| 04/08/1992 | CN2101103U Well and smooth sealing device for hot power petroleum exploitation well |
| 04/08/1992 | CN1016203B Well cementing method and manual port closing tool |
| 04/07/1992 | US5101908 Inflatable packing device and method of sealing |
| 04/07/1992 | US5101897 Slip mechanism for a well tool |
| 04/07/1992 | US5101896 Pipe wiper and washer system |
| 04/07/1992 | US5101895 Well abandonment system |
| 04/07/1992 | US5101604 Subterranean well welding habitat |
| 04/07/1992 | CA2011569C Thermal blanket for well-heads, blow-out preventors and the like |
| 04/02/1992 | WO1992005336A1 Horizontal inflatable tool |
| 04/01/1992 | EP0478094A2 Method and system for attaching and removing equipment from a wellhead |
| 04/01/1992 | CN2100480U Pressure-guiding sand-blast packer for pressing crack |
| 03/31/1992 | US5100950 Rubber and fluorocarbon micropowder composition |
| 03/31/1992 | US5099919 Plug for well logging operations |
| 03/31/1992 | US5099882 Pressure balanced hydraulic coupling with metal seals |
| 03/28/1992 | CA2052308A1 Bore-hole packer |
| 03/25/1992 | CN2099835U Limiting-position claw type self-filling floating hoop and shoe |
| 03/25/1992 | CN2099834U Telescopic piezometric blow-out preventing tube |
| 03/25/1992 | CN1059778A Wellbead sealing and gush-proof device for oil extractor |
| 03/24/1992 | US5098220 Membrane liner for casinghead of oil well of the like |
| 03/24/1992 | US5098219 Mobile submersible caisson for underwater oil-well drilling and production |
| 03/24/1992 | US5097902 Progressive cavity pump for downhole inflatable packer |
| 03/24/1992 | US5097595 Method of liveloading a rotary or reciprocating shaft packing |
| 03/24/1992 | CA1297786C Sub surface safety valve block, particularly suitable for the risers of offshore platforms |
| 03/24/1992 | CA1297785C Method to form a fluid barrier with sloped drains, notably for use near oil wells |
| 03/18/1992 | EP0475830A1 Method and plug for the permanent closure of a storage well |
| 03/18/1992 | EP0475557A1 Method of sealing a casing hanger in a wellhead |
| 03/18/1992 | EP0331676B1 Packing-seal for boreholes |
| 03/18/1992 | CN2099188U Rod sealing and gush preventing device for oil pump-ing machine |
| 03/17/1992 | US5096209 Seal elements for multiple well packers |
| 03/17/1992 | US5095992 Process for installing casing in a borehole |
| 03/17/1992 | US5095991 Device for inserting tubular members together |
| 03/17/1992 | US5095988 Plug injection method and apparatus |
| 03/17/1992 | US5095987 Method of forming and using high density particulate slurries for well completion |
| 03/17/1992 | US5095983 Multiphase production evaluation method using thru-tubing, wireline packoff devices |
| 03/17/1992 | US5095980 Non-rotating cementing plug with molded inserts |
| 03/17/1992 | US5095979 Apparatus for operating a downhole tool using coil tubing |
| 03/17/1992 | US5095978 Hydraulically operated permanent type well packer assembly |
| 03/17/1992 | US5095808 Sequential remote control plug release system |
| 03/17/1992 | CA1297400C Hydraulic lock alleviation device for a well cementing stage tool, such a tool and a method of alleviating an hydraulic lock |
| 03/12/1992 | CA2025041A1 Mechanical ring seal |
| 03/11/1992 | CN1015834B Accurate position seismic wave transmission device |
| 03/11/1992 | CN1015819B Connector for fluid carrying conduits |
| 03/11/1992 | CN1015811B Subsurface safety valve block, particularly suitable for risers of off shore platform |
| 03/11/1992 | CN1015810B Method for fixing rocklayer of contain minerals in drilling well |
| 03/11/1992 | CN1015808B Method for well drilling |
| 03/10/1992 | US5094297 Casing weight set seal ring |
| 03/10/1992 | US5094294 Well pump assembly and packer |
| 03/10/1992 | CA1296999C Apparatus and method for improving the integrity of coupling sections in high performance tubing and casing |
| 03/10/1992 | CA1296998C Process and equipment for oil well drilling and completing operations in deep water |
| 03/06/1992 | WO1992004526A1 Well tubing hanger sealing assembly |
| 03/06/1992 | CA2072103A1 Well tubing hanger sealing assembly |
| 03/06/1992 | CA2024664A1 Method for selective plugging of a zone in a well |
| 03/05/1992 | WO1992003634A1 Method for using standardized elements in connection with complex structures, and an adaptor for carrying out this method |
| 03/04/1992 | EP0473493A1 Packer |
| 03/04/1992 | CN1015727B Combined multifunctional oil wellhead assembly |
| 03/03/1992 | US5092406 Apparatus for controlling well cementing operation |
| 03/03/1992 | US5092403 Packer centralizing device |
| 03/03/1992 | US5092401 Wellhead assembly |
| 03/03/1992 | US5092400 Coiled tubing hanger |
| 03/03/1992 | US5092265 Apparatus for applying resin coatings |
| 03/03/1992 | CA1296619C Oil production facility of modular design for underwater station |
| 02/26/1992 | EP0472258A2 Method of hydraulic fracture of subterranean formation |
| 02/26/1992 | CN2097275U Anti-clamping packer |
| 02/25/1992 | CA1296251C Subsea well casing hanger suspension system |
| 02/19/1992 | EP0471560A1 BOP seal with improved metal inserts |
| 02/19/1992 | CN2096633U Sealing apparatus |