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)
12/2000
12/20/2000CN2411338Y Two-stage cementing connector
12/20/2000CN2411337Y High-pressure well head quick connecting device
12/19/2000US6161622 Remote actuated plug method
12/19/2000US6161618 Subsea control module
12/14/2000WO2000075478A1 Coiled tubing hanger assembly
12/14/2000WO2000045029A3 A method for setting a packer in a well bore, and a packer
12/14/2000CA2311417A1 Stuffing box with ultra-high molecular weight sealing elements
12/13/2000EP1059481A1 Universal safety device and method for protecting a pipeline
12/13/2000EP1059316A1 Water-soluble copolymers and their use for the exploration and recuperation of oil and gas
12/13/2000EP1058768A1 Safety seal for wells
12/13/2000CN2410415Y Cemeneting device by cable car
12/12/2000US6158716 Lateral connector for tube assembly
12/12/2000US6158531 One pass drilling and completion of wellbores with drill bit attached to drill string to make cased wellbores to produce hydrocarbons
12/12/2000US6158514 Sealed lateral wellbore junction assembled downhole
12/12/2000US6158506 Inflatable packing device including components for effecting a uniform expansion profile
12/12/2000US6158505 Blade seal for a shearing blind ram in a ram type blowout preventer
12/12/2000CA2216456C Blow-out preventer
12/07/2000CA2310878A1 Lubrication and self-cleaning system for expansion mandrel
12/06/2000EP1056926A1 Improvements in or relating to reducing water flow
12/05/2000US6155358 Wiper device for stripping drilling fluid from rig drill string
12/05/2000US6155344 Downhole tool connection for live well deployment
11/2000
11/30/2000WO2000071851A1 Method of and apparatus for inserting tubing into a well bore
11/29/2000EP1055798A2 Apparatus and method for setting a liner by hydraulic pressure
11/29/2000CN2408234Y Multifunction anti-theft packing box for wellhead of oil pumping well
11/29/2000CN1274795A Multifunctional capping device
11/29/2000CN1059010C Pressure index deciding method for block integral profile control for water packing-off
11/28/2000US6153562 For wells
11/28/2000US6152234 Method for strengthening a subterranean formation
11/28/2000US6152230 High pressure tree cap
11/28/2000US6152227 Drilling and cementing through shallow waterflows
11/28/2000US6152225 Method and apparatus for multi-diameter testing of blowout preventer assemblies
11/28/2000US6152224 Downhole apparatus
11/23/2000WO2000070185A1 Recovery of production fluids from an oil or gas well
11/21/2000US6148912 Subsurface measurement apparatus, system, and process for improved well drilling control and production
11/21/2000US6148858 Pressure balanced couplings
11/21/2000US6148664 Method and apparatus for shutting in a well while leaving drill stem in the borehole
11/21/2000CA2101814C Equipment enabling the interconnection of two lines to allow running of pigs
11/16/2000WO2000037766A3 Procedures and equipment for profiling and jointing of pipes
11/15/2000EP1052369A2 Downhole packing apparatus
11/15/2000CN2406060Y Liquid whild-wind generator
11/15/2000CN2406059Y Metal-sealing enclosure
11/15/2000CN1058547C Assembly and process for drilling and completing multiple wells
11/14/2000US6145598 Hydrostatic, slow actuating subterranean well tool manipulation device and method
11/14/2000US6145597 Method and apparatus for retaining a cable in a conduit
11/14/2000US6145596 Method and apparatus for dual string well tree isolation
11/14/2000US6145594 Gate valve for subsea completion system
11/14/2000US6145591 Method and compositions for use in cementing
11/14/2000CA2158514C Method and apparatus for intermittent production of oil with a mechanical interface
11/09/2000WO2000066880A1 Downhole device for controlling fluid flow in a well
11/09/2000WO2000066879A1 Method and multi-purpose apparatus for control of fluid in wellbore casing
11/09/2000WO2000066878A1 Downhole sealing method and composition
11/09/2000WO2000066877A1 Ribbed sealing element and method of use
11/09/2000WO2000066874A1 A casing centralizer and casing accessory equipment
11/08/2000EP1049853A1 Inflatable packer
11/08/2000EP0839256B1 Lightweight intervention system for use with horizontal tree with internal ball valve
11/08/2000CN2405005Y Ratary blow-out preventer for drilling
11/08/2000CN2405004Y Gas recovery means for eccentric well head cover
11/08/2000CN2405003Y Multi-functional well head sealing means for oil prodn. well
11/08/2000CN1272586A Multifunctional foot valve
11/08/2000CN1058316C Drilling and well-cementing method
11/07/2000US6142236 Method for drilling and completing a subsea well using small diameter riser
11/07/2000US6142235 Bottom-supported guidance device for alignment of multiple wellbores in a single conductor
11/07/2000US6142234 Apparatus and method for tieback of subsea wells
11/07/2000US6142233 Tree running tool with actuator for latch
11/07/2000US6142227 Expandable retrievable bridge plug
11/02/2000EP0760898B1 Double walled insulated tubing and method of installing same
11/02/2000DE10005799A1 Brunnen-Kopfende Fountain-head of
11/01/2000CN2403892Y Reducing rubber plug
11/01/2000CN2403891Y Double-packing cement-filling circulating tool
11/01/2000CN2403890Y Telescopic packer
11/01/2000CN2403889Y Oilwell plug
10/2000
10/31/2000US6138774 Method and apparatus for drilling a borehole into a subsea abnormal pore pressure environment
10/31/2000US6138762 Wellhead connector with additional load shoulders
10/31/2000US6138761 Apparatus and methods for completing a wellbore
10/31/2000US6138751 Hanger assembly
10/31/2000CA2190971C Double walled insulated tubing and method of installing same
10/26/2000WO2000063528A1 Dual diverter and orientation device for multilateral completions and method
10/26/2000WO2000063525A1 Downhole tool with thermal compensation
10/26/2000WO2000063524A1 Inflatable packer setting tool assembly
10/26/2000WO2000063523A1 Apparatus for maintaining uniform pressure within an expandable well tool
10/26/2000WO2000063522A1 Multi-stage pressure maintenance device for subterranean well tool
10/26/2000WO2000063520A1 Packer
10/26/2000WO2000037767A3 Profile formation
10/26/2000WO2000026495A3 Remotely controlled assembly for wellbore flow diverter
10/26/2000CA2536620A1 Expandable connector for borehole tubes
10/26/2000CA2536385A1 Expandable connector for borehole tubes
10/25/2000EP0993542A4 Anti-rotational cementing apparatus
10/24/2000US6135208 Expandable wellbore junction
10/24/2000US6135204 Method for placing instrumentation in a bore hole
10/19/2000WO2000061915A1 Method of creating a wellbore in an underground formation
10/19/2000WO2000061914A1 Method for annular sealing
10/19/2000WO2000061912A2 Method of manufacturing a wall thickness program into an elastomeric tubular component for incorporation into a packing device for use in a subterranean well
10/19/2000WO2000061911A1 Inflatable packer
10/19/2000WO2000061910A1 Inflatable packer
10/19/2000WO2000061353A1 Inflation element for a downhole tool, method and shaping tool for pre-disposing the bladder
10/19/2000CA2367637A1 Inflation element for a downhole tool, method and shaping tool for pre-disposing the bladder
10/18/2000CN2401692Y Automatically sealed polish and packing device
10/17/2000US6131663 Method and apparatus for positioning and repositioning a plurality of service tools downhole without rotation
10/17/2000US6131662 Methods of completing wells utilizing wellbore equipment positioning apparatus
10/17/2000US6131656 Bridge plug for a well bore
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