Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 33 - Sealing or packing boreholes or wells
Patents for E21B 33 - Sealing or packing boreholes or wells (33,564)
08/1999
08/24/1999US5941530 Unidirectional environment barrier seal for subsea wellhead equipment and valves
08/24/1999US5941313 For filling a space proximate to a tool surface downhole in a wellbore
08/24/1999US5941310 Monobore completion/intervention riser system
08/24/1999US5941306 Ratchet release mechanism for a retrievable well apparatus and a retrievable well apparatus
08/19/1999WO1999041142A1 Spar system
08/18/1999EP0935718A2 Transmission assembly
08/17/1999US5939667 Subsea thermoelectric generator with thermoelectric modules disposed in sleeves
08/17/1999US5937955 Method and apparatus for sealing a well bore and sidetracking a well from the well bore
08/17/1999US5937949 Process for the consolidation of sand
08/17/1999US5937947 Method and apparatus for preventing environmental contamination due to fluid leakage from a wellhead
08/17/1999CA2262160A1 Self-aligning stuffing box and guide bushing assembly
08/17/1999CA2139701C Reeled tubing deployed packer with control line bypass
08/12/1999WO1999040293A1 Method for drilling and completing oil wells with small intermediate diameters
08/11/1999EP0934500A1 Stemming arrangement and method for blast holes
08/11/1999CN2332812Y Positive washing well gas-lift packer
08/10/1999US5934377 Method for isolating hydrocarbon-containing formations intersected by a well drilled for the purpose of producing hydrocarbons therethrough
08/10/1999US5934372 Pump system and method for pumping well fluids
08/10/1999US5934371 Remotely controlled shut-off valve and variable choke assembly
08/04/1999EP0933124A1 Method for preparing an injectable and in situ gelable mixture in a confined space
08/04/1999EP0932790A1 Undersea hydraulic connector with equalization channel
08/04/1999EP0932745A1 Continuous circulation drilling method
08/03/1999US5931443 Method of rebuilding annular-type blow out preventer
08/03/1999US5931442 Submersible work vessel for installing a blow out preventer
08/03/1999CA2029529C Casing valve
07/1999
07/29/1999CA2259001A1 Preparation process for an injectable, gelifiable mixture in situ in a confined space
07/28/1999CN2330778Y Rotating-in type anti-blowing plain rod sealer
07/27/1999US5929372 Thermoelectric generator
07/27/1999US5927405 For insertion into a well to displace well fluid
07/27/1999US5927403 Apparatus for increasing the flow of production stimulation fluids through a wellhead
07/22/1999WO1999036664A1 Method of forming cement seals in downhole pipes
07/22/1999WO1999036663A1 Inflatable packer
07/22/1999DE19801415A1 Process and assembly to replace defective subsoil mains drainage or sewage pipes
07/21/1999EP0929731A1 Method and multi-purpose apparatus for dispensing and circulating fluid in wellbore casing
07/21/1999CN2329761Y Pumping well flushing packer
07/20/1999US5925879 Oil and gas well packer having fiber optic Bragg Grating sensors for downhole insitu inflation monitoring
07/20/1999US5924741 Weaklink device for elongated offshore articles
07/20/1999US5924696 Frangible pressure seal
07/20/1999CA2155916C Early evaluation system
07/14/1999EP0928879A2 Packer with two dual slips
07/14/1999EP0928878A2 Slips for anchoring a downhole tool
07/14/1999CN2328786Y Double layer packing
07/13/1999US5921318 Method and apparatus for treating multiple production zones
07/13/1999US5921316 Automatic drill pipe cleaning system and method of use
07/08/1999WO1999034093A1 A method and a tool for treating the wall of a critical zone in a borehole
07/08/1999WO1999034092A1 Apparatus and method for injecting treatment fluids into an underground formation
07/07/1999EP0927085A1 In situ deep remediation injection system & method
07/06/1999USRE36244 Well plugging apparatus and method
07/06/1999US5918851 Used in oil and gas drilling operations
07/06/1999US5918677 Method of and apparatus for installing the casing in a well
07/06/1999US5918675 Apparatus for creating two wells in a single conductor
07/06/1999US5918674 Casing and method of installing the casing in a well
07/06/1999US5918673 Method and multi-purpose apparatus for dispensing and circulating fluid in wellbore casing
07/01/1999WO1999032813A1 Stuffing box
07/01/1999WO1999032756A1 Apparatus and method for inflating packers in a well
07/01/1999WO1999015758A3 Subsea drill fluid pumping and treatment system for deepwater drilling
06/1999
06/30/1999EP0926310A1 Apparatus and method for injecting treatment fluids into an underground formation
06/24/1999WO1999031426A1 Remotely operable underwater connector assembly and method
06/24/1999WO1999031349A1 Method and apparatus for cementing casing in a wellbore
06/23/1999CN2325508Y Large discharge volume and cleanable hole type packer
06/23/1999CN2325507Y Small diameter packer
06/22/1999US5913364 Methods of sealing subterranean zones
06/16/1999EP0922155A1 Subsea module
06/16/1999CN2324282Y Safety apparatus capable of automatic closing wellhead of gas well and gas transporting pipeline
06/15/1999US5911282 Well drilling fluids containing epoxy sealants and methods
06/15/1999CA2107210C Retrievable bridge plug and a running tool therefor
06/10/1999WO1999028593A1 Rov deployed tree cap for a subsea tree and method of installation
06/09/1999EP0920571A1 Swivel
06/09/1999EP0920570A1 Subsea well
06/08/1999US5909769 Fluid loss device
06/03/1999WO1999027230A2 Method for locating placement of a guide stock in a multilateral well and apparatus therefor
06/03/1999WO1999027225A1 An improvement in placing cement slurry in wells in the presence of geological zones containing swelling clays or mud residues containing clays
06/03/1999WO1999027224A1 Inflatable packer inflation verification system
06/03/1999WO1999027192A1 Soil consolidation apparatus, tool and method
06/03/1999WO1999014461A3 A plug for use in wellbore operations, an apparatus for receiving said plug, a plug landing system and a method for cementing tubulars in a wellbore
06/02/1999CN1218134A Vulcanized rubber powder blocking agent
05/1999
05/27/1999WO1999025611A1 Submersible work vessel for installing a blow out preventer
05/25/1999US5906375 Rubber riveting of molded parts
05/25/1999US5906240 Slip having passageway for lines therethrough
05/25/1999CA2134273C Spoolable coiled tubing completion system
05/20/1999WO1999024692A1 Plug for use in wellbore operations and apparatus for launching said plug
05/20/1999WO1999024689A1 Assembly and process for drilling and completing multiple wells
05/19/1999CN2319564Y Casing outer isolating device for side drilling of level well
05/18/1999US5904354 Mechanically energized element
05/18/1999US5904207 Packer
05/14/1999WO1999023351A1 A device for use for mounting and alignment of a christmas tree on a wellhead
05/14/1999WO1999023350A1 Method and device for mounting of a seabed installation
05/14/1999WO1999023349A1 Device for connecting a manifold module and a structure on a seabed
05/14/1999CA2308307A1 A device for use for mounting and alignment of a christmas tree on a wellhead
05/12/1999DE19806923C1 Sealing water well
05/12/1999CN2318392Y Soft slips type water-injection packer
05/12/1999CN2318391Y Packer capable of cleaning well and anti-differential-pressure
05/12/1999CN1216335A Electric cement mortar treater
05/11/1999US5901964 For sealing about an oilfield component
05/11/1999US5901787 For use in an oil or gas well
05/06/1999WO1999022114A1 Method and apparatus for shutting in a well while leaving drill stem in the borehole
05/06/1999WO1999022111A1 An apparatus for retaining two strings of tubulars
05/06/1999WO1999021933A1 Drilling and cementing through shallow waterflows
05/06/1999EP0913553A1 Plug release indication method in a well
05/06/1999EP0779946B1 Horizontal subsea tree pressure compensated plug
04/1999
04/29/1999WO1999020872A1 Novel control system
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