| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
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| 10/27/1997 | CA2175144A1 Thermosetting well treatment composition |
| 10/25/1997 | CA2201554A1 Tree test plug |
| 10/23/1997 | WO1997039506A1 Underground well electrical cable transition, seal and method |
| 10/22/1997 | EP0802303A1 Sealing apparatus |
| 10/22/1997 | EP0802302A1 Riser that is to be detached near the water surface |
| 10/22/1997 | EP0802253A1 Well drilling fluids |
| 10/22/1997 | EP0801705A1 Low profile and lightweight high pressure blowout preventer |
| 10/22/1997 | EP0801704A1 Method for injecting fluid into a wellbore |
| 10/22/1997 | EP0801702A1 Drilling and pipe laying unit |
| 10/22/1997 | EP0646216B1 Stabilizing compositions and methods for stabilizing subterranean formations |
| 10/22/1997 | CN1162689A Apparatus and method for sampling earth formation through cased borehole |
| 10/22/1997 | CN1162687A Soft sealing and separating technology |
| 10/21/1997 | US5678635 Thru tubing bridge plug and method |
| 10/21/1997 | CA2130959C Stress rings for inflatable packers |
| 10/17/1997 | CA2202729A1 Sintered metal seal |
| 10/16/1997 | WO1997038467A1 Wellhead junction system |
| 10/16/1997 | WO1997038451A1 Thermoelectric generator |
| 10/15/1997 | EP0689637B1 Method and device for cementing a well |
| 10/15/1997 | CN2264803Y Runaway blowout well head rush-assembling device |
| 10/14/1997 | US5676384 Anti-extrusion apparatus made from PTFE impregnated steel mesh |
| 10/14/1997 | US5676209 Deep water riser assembly |
| 10/14/1997 | CA2163946C Dizzy dognut anchoring system |
| 10/14/1997 | CA2106658C Drive head for downhole rotary pump |
| 10/09/1997 | WO1997037103A1 Method and system for monitoring a characteristic of an earth formation in a well |
| 10/09/1997 | WO1997037101A1 Monobore riser bore selector |
| 10/08/1997 | EP0614526B1 Method for predicting cement properties |
| 10/07/1997 | US5675088 Method and apparatus for automatic monitoring of tectonic stresses and quantitative forecast of shallow earthquakes |
| 10/07/1997 | US5673751 System for controlling the flow of fluid in an oil well |
| 10/07/1997 | CA2068223C Improved process for particle circulation in a porous medium |
| 10/03/1997 | CA2200129A1 Sealing assembly for subsea wellheads |
| 10/02/1997 | WO1997036087A1 Infuser for composite spoolable pipe |
| 10/02/1997 | CA2250027A1 Infuser for composite spoolable pipe |
| 10/01/1997 | EP0798445A2 Downwhole packer apparatus and method of limiting packer element extrusion |
| 09/30/1997 | US5671813 Method and apparatus for intermittent production of oil with a mechanical interface |
| 09/30/1997 | US5671812 Hydraulic pressure assisted casing tensioning system |
| 09/30/1997 | US5671811 Tube assembly for servicing a well head and having an inner coil tubing injected into an outer coiled tubing |
| 09/30/1997 | US5671809 Method to achieve low cost zonal isolation in an open hole completion |
| 09/25/1997 | WO1997035093A1 Method and apparatus using coiled-in-coiled tubing |
| 09/25/1997 | CA2200132A1 Monobore completion/intervention riser system |
| 09/24/1997 | CN2263196Y Freeze-proofing theft-proof pressure testing device for oil well |
| 09/23/1997 | US5670747 Apparatus for terminating and interconnecting rigid electrical cable and method |
| 09/23/1997 | US5670093 Fluid distribution system and method utilizing a radial splitter |
| 09/23/1997 | US5669448 Overbalance perforating and stimulation method for wells |
| 09/23/1997 | US5669442 Non-rotating pitless adapter |
| 09/23/1997 | CA2128177C Wellhead connector |
| 09/20/1997 | CA2200415A1 A casing and method of installing the casing in a well |
| 09/18/1997 | WO1997034095A1 Rod seal cartridge for progressing cavity artificial lift pumps |
| 09/17/1997 | EP0795091A1 A mechanical overload protection device |
| 09/16/1997 | US5667016 Method of setting and releasing a packer downhole |
| 09/16/1997 | US5667015 For the separation of two liquids in a gas or oil well |
| 09/16/1997 | US5667014 Self-removing choke insert system |
| 09/16/1997 | US5667011 Formed in an underground formation |
| 09/16/1997 | US5667010 Process and plug for well abandonment |
| 09/16/1997 | US5667009 Rubber boots for electrical connection for down hole well |
| 09/16/1997 | US5667008 Seal electrical conductor arrangement for use with a well bore in hazardous areas |
| 09/12/1997 | WO1997033067A1 High pressure tree cap |
| 09/12/1997 | WO1997033066A1 Method of removing wellhead assemblies |
| 09/12/1997 | CA2171495A1 Wellhead stuffing box for rotating rod string |
| 09/10/1997 | EP0794316A2 Packer for use in a subterranean well |
| 09/09/1997 | US5664626 Mechanical plug device |
| 09/07/1997 | CA2171155A1 Underground fluid sampling apparatus |
| 09/04/1997 | DE19607988A1 Coupling connecting rotary drilling drive to injector transferring mortar into rock anchor |
| 09/03/1997 | CN2261507Y Reusable bridge plug |
| 09/02/1997 | US5663123 Polymers for bore holes to stabilize earth in drilling and excavation |
| 09/02/1997 | US5662341 Metal-to-metal seal assembly for oil and gas well production apparatus |
| 09/02/1997 | US5662312 Pressurized sheave mechanism for high pressure wireline service |
| 09/02/1997 | US5662181 Rotating blowout preventer |
| 09/02/1997 | US5662171 For sealing pressurized fluid in a well exterior |
| 09/02/1997 | US5662169 Cuttings injection wellhead system |
| 09/02/1997 | US5662165 Production wells having permanent downhole formation evaluation sensors |
| 08/28/1997 | WO1997021904A3 Open hole straddle system and method for setting such a system |
| 08/27/1997 | EP0791723A1 Apparatus and method for sampling an earth formation through a cased borehole |
| 08/27/1997 | EP0791720A2 Packer for a wellbore |
| 08/27/1997 | CN2260889Y Polish rod sealer for pumping unit well |
| 08/26/1997 | CA2114307C Environmentally secure polished rod liner head |
| 08/21/1997 | WO1997030266A1 Method and apparatus for use in inflating packer in well bore |
| 08/20/1997 | EP0790388A2 Device to prevent fluid loss |
| 08/19/1997 | US5658018 Sealing connection system between axially impacting joint components |
| 08/19/1997 | US5657823 Near surface disconnect riser |
| 08/19/1997 | US5657822 Using tubular capsule filled with bentonite |
| 08/19/1997 | CA2030161C Arrangement and method for conducting substance and lock therefor |
| 08/15/1997 | CA2169503A1 Wellhead assembly |
| 08/14/1997 | CA2175267A1 Assembly and method for hanging elongated tubing in well bore |
| 08/14/1997 | CA2169393A1 Protective cover assembly for well heads |
| 08/13/1997 | CA2197404A1 Fluid loss device |
| 08/12/1997 | US5656136 Method of transporting and heating a liquid used for treating oil and gas wells or pipeline systems |
| 08/12/1997 | US5655745 For an oil or gas well |
| 08/12/1997 | US5655607 Downhole tool for pressure testing of oil and gas wells |
| 08/12/1997 | US5655606 For supporting a string of casing in a well |
| 08/12/1997 | US5655603 Mudline casing hanger mechanism incorporating improved seals and a detent mechanism for installation |
| 08/12/1997 | US5655602 Apparatus and process for drilling and completing multiple wells |
| 08/07/1997 | WO1997028349A2 Downhole valve |
| 08/07/1997 | WO1997028348A1 Inflatable packer |
| 08/07/1997 | CA2245075A1 Improved downhole apparatus |
| 08/06/1997 | EP0787889A2 Method and apparatus for perforating a well |
| 08/05/1997 | US5653418 Ram-type blowout preventer |
| 08/05/1997 | US5653290 Rotating rod string position adjusting device |
| 08/05/1997 | US5653289 Adjustable jackup drilling system hanger |
| 08/05/1997 | CA2132465C Internal tubing hanger lockdown |
| 07/31/1997 | WO1997027382A1 Completions insertion and retrieval under pressure (cirp) apparatus including the snaplock connector |