| Patents for E21B 33 - Sealing or packing boreholes or wells (33,564) |
|---|
| 01/12/2000 | CN2358220Y Mounting and dismounting device of blowout preventer for drilling |
| 01/11/2000 | US6012528 Method and apparatus for replacing a packer element |
| 01/11/2000 | US6012519 Full bore tubing hanger system |
| 01/06/2000 | WO2000000762A1 Seal |
| 01/05/2000 | EP0969183A2 Plug |
| 01/05/2000 | EP0968354A1 Wellhead device for retaining the solid particles carried by the production fluid |
| 01/05/2000 | EP0839255A4 Safeguarded method and apparatus for fluid communication using coiled tubing, with application to drill stem testing |
| 01/05/2000 | CN2357124Y Expansion heat production packer |
| 01/05/2000 | CN2357123Y Self-sealed blow-out preventing box |
| 01/05/2000 | CN2357122Y Well head device for extracting oil |
| 01/04/2000 | US6009951 Method and apparatus for hybrid element casing packer for cased-hole applications |
| 01/04/2000 | US6009950 Subsea manifold stab with integral check valve |
| 01/04/2000 | US6009948 Resonance tools for use in wellbores |
| 01/04/2000 | US6009946 Device for sealing charges in shot holes and a method for using the same |
| 01/04/2000 | US6009944 Plug launching device |
| 01/04/2000 | US6009943 Liner assembly and method |
| 12/29/1999 | WO1999067500A1 Gate valve for subsea completion system |
| 12/29/1999 | CN2356140Y Packer |
| 12/28/1999 | US6009419 Method for predicting cement properties |
| 12/28/1999 | US6007111 Dual metal seal for wellhead housing |
| 12/28/1999 | US6007067 Multi-operational expansion gasket |
| 12/28/1999 | US6006836 Methods of sealing plugs in well bores |
| 12/28/1999 | US6006834 Formation evaluation testing apparatus and associated methods |
| 12/28/1999 | US6006832 Method and system for monitoring and controlling production and injection wells having permanent downhole formation evaluation sensors |
| 12/28/1999 | US6006647 Actuator with free-floating piston for a blowout preventer and the like |
| 12/25/1999 | CA2241732A1 Downwell isolator |
| 12/23/1999 | WO1999066171A2 Method and system for moving equipment into and through an oil and/or gas production well |
| 12/22/1999 | CN2355098Y Simple anti-stealing well head device |
| 12/22/1999 | CN1239531A Deformed multiple well template and process of use |
| 12/21/1999 | US6003602 Tree bore protector |
| 12/21/1999 | CA2176314C Hydraulic tubing head assembly |
| 12/16/1999 | WO1999064775A1 Drilling quick connectors |
| 12/15/1999 | EP0963504A1 Inflatable downhole seal |
| 12/15/1999 | CN2353882Y Shear-pin type automatic mud-filling-up apparatus for oil-well |
| 12/15/1999 | CN2353881Y Multifunction oil-pumping motor-pumped well mouth sealer |
| 12/15/1999 | CN2353880Y Follow-up-centring polish-rod sealer for oil-pumping well mouth |
| 12/15/1999 | CN1238824A System, vessel, seabed installation and method for producing oil or gas |
| 12/14/1999 | US6000469 Self aligning stuffing box and guide bushing assembly |
| 12/09/1999 | WO1999051850A3 Underground cable and pipelaying |
| 12/08/1999 | EP0962625A2 Shut-off valve for downhole tool for retrieving said tool from a well under pressure |
| 12/08/1999 | EP0962624A1 Device for making or regenerating water wells |
| 12/08/1999 | EP0962622A2 Electrohydraulic control unit |
| 12/08/1999 | EP0961867A1 Structure for the production of oil and/or gas at sea |
| 12/07/1999 | WO2000073622A1 Method for carrying out operations on petroleum and gas fields and deep-sea platform for realising the same |
| 12/07/1999 | US5997003 Annular sealing assembly and methods of sealing |
| 12/07/1999 | US5996712 Mechanical locking swivel apparatus |
| 12/07/1999 | US5996697 Static wellhead plug |
| 12/07/1999 | US5996695 Method and apparatus for sealing between casing and wellhead connector structure |
| 12/07/1999 | CA2374839A1 Method for carrying out operations on petroleum and gas fields and deep-sea platform for realising the same |
| 12/07/1999 | CA2246398C Seal electrical conductor arrangement for use with a well bore in hazardous areas |
| 12/05/1999 | CA2239941A1 Oil well pump leakage accumulator |
| 12/02/1999 | WO1999061864A1 Borehole closure plug |
| 12/02/1999 | WO1999061745A1 Arrangement for the removal of cuttings and gas arising from drilling operations |
| 12/02/1999 | WO1999050524A3 Subsea mud pump |
| 12/01/1999 | EP0961007A2 Expandable wellbore junction |
| 12/01/1999 | EP0960263A2 Tool and method for removing excess cement from the top of a liner after hanging and cementing thereof |
| 12/01/1999 | EP0960262A1 Device by a retrievable bridge plug |
| 12/01/1999 | CN2351545Y High-temperature and pressure plugging tool assembly |
| 12/01/1999 | CN2351544Y Air bag type drilling water-sealing up packer |
| 12/01/1999 | CN2351543Y Packer for oil well heat recovery |
| 12/01/1999 | CN1236857A Self-sealing packer of activated rubber barrel |
| 12/01/1999 | CN1046988C Artificial well-wall sand-proof technology for steam-injection thermal recovery well of thickened oil |
| 11/30/1999 | US5992527 Wellhead assembly |
| 11/30/1999 | US5992526 ROV deployed tree cap for a subsea tree and method of installation |
| 11/30/1999 | US5992522 Process and seal for minimizing interzonal migration in boreholes |
| 11/30/1999 | US5992250 Apparatus for the remote measurement of physical parameters |
| 11/30/1999 | CA2159448C Seal electrical conductor arrangement for use with a well bore in hazardous areas |
| 11/28/1999 | CA2443312A1 Expandable wellbore junction |
| 11/28/1999 | CA2272679A1 Bore hole safety valves |
| 11/25/1999 | WO1999060250A1 Method for installing a sensor in connection with plugging a well |
| 11/25/1999 | WO1999060246A1 A method of connecting a delivery line to a submerged manifold, and a vertical connection module |
| 11/25/1999 | CA2329009A1 Method for installing a sensor in connection with plugging a well |
| 11/24/1999 | EP0959226A2 Packer apparatus |
| 11/24/1999 | EP0959225A2 Pressure control apparatus |
| 11/24/1999 | CN2350521Y Packer for oil well |
| 11/24/1999 | CN2350520Y Self-press packer |
| 11/23/1999 | US5990051 Mixing oxyzolidine, collagen, oil and water and molding the mixture into round balls |
| 11/23/1999 | US5988284 Method and apparatus for enhancing well performance |
| 11/23/1999 | US5988282 Pressure compensated actuated check valve |
| 11/23/1999 | US5988281 Engageable metal seal pressure balanced stab |
| 11/23/1999 | US5988277 Running tool for static wellhead plug |
| 11/23/1999 | US5988276 Compact retrievable well packer |
| 11/23/1999 | US5988274 Method of and apparatus for inserting pipes and tools into wells |
| 11/23/1999 | US5988273 Coiled tubing completion system |
| 11/22/1999 | CA2272153A1 Retrievable high pressure high temperature packer apparatus with anti-extrusion system |
| 11/18/1999 | WO1999058813A1 Method and apparatus for sealing between casing and wellhead connector structure |
| 11/17/1999 | EP0956426A1 Apparatus for and method of assembling a rotary blowout preventer |
| 11/16/1999 | US5984012 Emergency recovery system for use in a subsea environment |
| 11/16/1999 | US5984008 Installable load shoulder for use in a wellhead to support a tubing hanger |
| 11/16/1999 | US5984007 Chip resistant buttons for downhole tools having slip elements |
| 11/11/1999 | WO1999057417A2 Chemical actuation system for downhole tools and method for detecting failure of an inflatable element |
| 11/11/1999 | WO1999057409A2 A method and a plug for plugging a casing in a petroleum well and a tool for milling an opening in a casing in a petroleum well |
| 11/10/1999 | EP0954675A1 Well head system |
| 11/09/1999 | US5981447 Dissolving a water soluble polysaccharide in aqueous solution, crossliking with a crosslinker selected from zirconium, aluminium and antimony compounds, drying, granulating, mixing fluid control agent for hydration |
| 11/09/1999 | US5979943 Shearable completion riser joint |
| 11/03/1999 | CN1046151C Oil well water-stopping agent made of polyacrylamide |
| 11/02/1999 | US5975484 Door connectors |
| 11/02/1999 | US5975211 Wellhead bore isolation tool |
| 11/02/1999 | US5975210 Well completion system having a precision cut low profile helix |
| 10/28/1999 | DE19835468C1 Well packer with intentional point of separation |