| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 01/19/1993 | CA1312832C Electrical conductor arrangements for pipe system |
| 01/19/1993 | CA1312820C Pressure limiter for a downhole pump and testing apparatus |
| 01/14/1993 | DE4122811A1 Plug for sealing holes with synthetic resin bored during tunnelling - is fed with stabilising substance under pressure and has sealing element compressed to form seal between plug and hole wall |
| 01/14/1993 | DE4122684A1 Extinguishing burning oil wells using fully mechanised method - by encircling with wall having central crater into which rocks or concrete blocks are conveyed and providing pipe system for feeding extinguishing agent, extracting oil, etc. |
| 01/14/1993 | DE4121394A1 Injection method of underground mineral extraction - using drill string with injection head used as drill bit, and flushing up loosened material from deposit to top of drill string |
| 01/13/1993 | EP0522628A2 Fracturing method and apparatus |
| 01/13/1993 | EP0522031A1 Improvements in or relating to subsea control systems and apparatus. |
| 01/12/1993 | US5178219 Method and apparatus for performing a block squeeze cementing job |
| 01/12/1993 | US5178216 Wedge lock ring |
| 01/12/1993 | US5178215 Rotary blowout preventer adaptable for use with both kelly and overhead drive mechanisms |
| 01/12/1993 | US5178214 Restriction sub with deformable plastic sleeve |
| 01/07/1993 | EP0521376A2 Method of grouting porous gas- and petroleum-bearing formations |
| 01/07/1993 | DE4122392A1 Shut=off equipment for burning oil or gas well - includes bush inserted into well-tubing and fitted with slide valve |
| 01/05/1993 | US5176471 Arrangement and method for protecting components in subsea systems |
| 01/05/1993 | US5176219 Method of sealing holes in the ground |
| 01/05/1993 | US5176218 Adjustable mandrel well casing hanger |
| 01/05/1993 | US5176217 Sealing assembly for subterranean well packing unit |
| 01/05/1993 | US5176216 Bypass seating nipple |
| 12/30/1992 | EP0520744A1 Improved tubing hanger and running tool with a preloaded lockdown |
| 12/30/1992 | EP0520107A1 Running tool for casing hangers |
| 12/30/1992 | EP0315636B1 Method and system for attaching and removing equipment from a wellhead |
| 12/29/1992 | US5174376 Metal-to-metal annulus packoff for a subsea wellhead system |
| 12/29/1992 | US5174320 Bulk cement metering device |
| 12/28/1992 | CA2071609A1 Tubing hanger and running tool with a preloaded lockdown |
| 12/23/1992 | WO1992022729A1 Positive stop collar |
| 12/23/1992 | WO1992022352A1 Method and apparatus for closing a wellhead casing |
| 12/23/1992 | EP0519757A1 Downhole tool apparatus |
| 12/23/1992 | EP0235249B1 In situ hazardous waste treating apparatus and method of using same |
| 12/23/1992 | CN2125695U Starting taper hanging type well up flange |
| 12/23/1992 | CN2125694U Two-layer screen tube sand prevention unit |
| 12/23/1992 | CN2125693U Cutting liquid burden charging carriage |
| 12/22/1992 | CA2062395A1 Sand consolidation methods |
| 12/17/1992 | DE4114767A1 Oil fire extinguishing assembly e.g. for oil well - has system for repairing extinguished well, contg. bell with mobile rotatable tube, for emptying oil and immediate recovery |
| 12/16/1992 | EP0518371A2 Fluid-actuated wellbore tool system |
| 12/16/1992 | EP0517968A1 Improvements in or relating to the formation of well bores |
| 12/15/1992 | US5170853 Pipe wiper assembly for a well drilling unit |
| 12/15/1992 | US5170846 System and apparatus for controlling a well |
| 12/09/1992 | EP0517329A1 Hollow auger for casting piles in situ, and drilling device including at least two such augers |
| 12/09/1992 | CN2124304U Bottom-hole packer for flushing and counterflushing |
| 12/08/1992 | US5168933 Combination hydraulic tubing hanger and chemical injection sub |
| 12/08/1992 | US5168931 Fluid control valve |
| 12/03/1992 | DE4117251A1 Fire-extinguishing arrangement easy to transport - comprising hood made of cloth of non-flammable material fastened around rigid frame and movable on wheels |
| 12/02/1992 | EP0515742A1 Tieback adapter for a subsea well |
| 12/02/1992 | EP0515513A1 Releasable hydraulic and/or electric connection for subsea equipment. |
| 12/02/1992 | EP0515382A1 Actuator with automatic lock |
| 12/02/1992 | CN2123605U Hydraulic anchorage device |
| 12/02/1992 | CN2123604U Stainless cotton anti-sand device |
| 12/01/1992 | US5167283 Combination ball valve and annular pipe seal |
| 12/01/1992 | US5167277 Fluid spill deflection device |
| 12/01/1992 | CA2069179A1 Tieback adapter for a subsea well |
| 12/01/1992 | CA1310901C Retrievable bridge plug |
| 12/01/1992 | CA1310900C Multiple-set packer and method |
| 11/26/1992 | WO1992020948A1 Method for interconnecting couplings below water and a connecting device adapted for carrying out this method |
| 11/26/1992 | WO1992020899A1 Expendable composite fiber device |
| 11/26/1992 | DE4116761A1 Device for temporary closure of defective oil riser pipe arrangement - has housing with at one end an opening at which housing can be attached to defective arrangement |
| 11/24/1992 | US5166677 Electric and electro-hydraulic control systems for subsea and remote wellheads and pipelines |
| 11/24/1992 | US5165704 Blowout preventer bonnet seal carrier |
| 11/24/1992 | US5165703 Anti-extrusion centering seals and packings |
| 11/24/1992 | US5165484 Oil well fire extinguisher having oil jet dispersing screens |
| 11/24/1992 | US5165474 Anti-rotation device for cementing plugs with deformable peripheral "fins"o"lips" |
| 11/24/1992 | US5165473 Positive stop collar |
| 11/19/1992 | EP0513899A1 Cleaning methods |
| 11/19/1992 | EP0513494A2 Method and apparatus for sealing at a sliding interface |
| 11/19/1992 | EP0513296A1 Device for the assembly or disassembly of probes in process pipes, tanks, etc. |
| 11/19/1992 | DE4116293A1 Restitution of oil well blowouts - using combination of sleeves to tee into the oil pipe in excavated gallery, allowing fire to be extinguished safety whilst maintaining prodn. |
| 11/19/1992 | DE4116287A1 Lightweight, covered fire extinguishing bell for oil fire - comprises asbestos-coated cover material, heat resistant framework pipes with coolant flowing through and gas-tight interior made inert by supplying nitrogen@ |
| 11/19/1992 | DE4116130A1 Extinguishing oil well fires and blowouts - uses hollow conical chamber and attached valve and fills chamber with quick setting concrete only after correct positioning |
| 11/17/1992 | US5163514 Blowout preventer isolation test tool |
| 11/17/1992 | CA1310262C Inflatable tools |
| 11/17/1992 | CA1310261C Method and apparatus for repairing casings and the like |
| 11/12/1992 | DE4114689A1 Appts. for extinguishing borehole fires in oil deposits - includes sliding carriage pushed over borehole so that aperture in carriage bottom takes oil outflow for direct piping away |
| 11/11/1992 | CN2121533U Submerged pump under well packer |
| 11/10/1992 | US5161620 Subsea production wellhead assembly |
| 11/10/1992 | US5161617 Directly installed shut-off and diverter valve assembly for flowing oil well with concentric casings |
| 11/10/1992 | US5161612 Well casing wash assembly |
| 11/10/1992 | US5161294 Tool device for use in replacing an instrument disposed in a normally inaccesible or dangerous environment |
| 11/05/1992 | DE4114355A1 Shutting down oil well blowouts - using remote controlled bore drill in underground shaft beneath well head to pump pressure countering materials into oil pipe |
| 11/05/1992 | DE4114312A1 Extinguishing oil well fires - using large, sand-filled flexible bag which is dropped onto the fire to smother the flames |
| 11/03/1992 | US5160217 Method of in situ decontamination |
| 11/03/1992 | US5160172 Threaded latch ring tubular connector |
| 11/03/1992 | US5159983 Thermite reaction |
| 11/03/1992 | US5159982 Double walled riser |
| 10/29/1992 | WO1992018746A1 Blocking robot for high-pressure oil wells |
| 10/29/1992 | DE4113315A1 Explosive cartridge for permanent sealing of oil pipes which are out of control - comprises hermetically sealed cartridge contg. explosives which undergoes permanent enlarging of its periphery |
| 10/29/1992 | DE4112288A1 Extinguishing oil fire at borehole by hollow concrete ball - comprises choking oil outlet and discharging sand, and sealing outlet with solid concrete ball with oil flow control valve |
| 10/29/1992 | CA2103361A1 Blocking robot for high-pressure oil wells |
| 10/28/1992 | EP0510778A1 Wellhead structure |
| 10/28/1992 | CN2120177U Electric submersible pump device for well heads |
| 10/27/1992 | US5158326 Casing head connector |
| 10/27/1992 | US5158141 Coupling arrangement for components in subsea structures and a remotely operated tool unit for handling such components |
| 10/27/1992 | US5158138 Apparatus for shutting in a burning oil well |
| 10/27/1992 | US5158137 Retrievable oil well capping device |
| 10/27/1992 | CA1309366C Bacteria and its use in a microbial profile modification process |
| 10/22/1992 | DE4112680A1 Fire-extinguishing system, esp. for high pressure oil fires - comprises extinguisher container contg. liq. nitrogen@ which can be moved into position above fire, to enclose it etc. |
| 10/21/1992 | EP0509157A1 Retainer ring |
| 10/21/1992 | EP0509156A1 Sealing assembly |
| 10/20/1992 | US5156220 Well tool with sealing means |
| 10/20/1992 | US5156212 Method and system for controlling high pressure flow, such as in containment of oil and gas well fires |
| 10/20/1992 | CA1309120C Tubular connector |
| 10/15/1992 | DE4122820A1 Stopping outbreaks of oil and gas from borehole riser - by pumping drilling mud into riser with system that includes crane with long outrigger |