E21B 43 - Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells

Patents for E21B 43 - Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells (64,186)
11/2004
11/17/2004	CN2656616Y High pressure abrasive jet flow seam cutting equipment in oil well
11/17/2004	CN1546838A Sublevel lifting process for preventing sand-stick in oil well
11/17/2004	CN1546837A Pumping unit for oil field
11/17/2004	CN1546836A Drive rope rupture protector for oil pumping machine
11/17/2004	CN1546601A Mineral matrix filled low oil yield layer modification liquid
11/17/2004	CN1546600A Preparation method of CO2-N2 composite foam synergist for improving thick oil heat gathering effect
11/17/2004	CN1176301C Pumping unit with lower centroidal and balanced running beam
11/17/2004	CN1176298C Method and device for oil well liquid-supplying state monitoring and automatic oil-pumping control of pumping machine
11/16/2004	US6817809 Seabed oil storage and tanker offtake system
11/16/2004	US6817598 Gun brake device
11/16/2004	US6817427 Device and method for extracting a gas hydrate
11/16/2004	US6817423 Wall stimulation tool and method of using same
11/16/2004	US6817419 Well production management and storage system controller
11/16/2004	US6817416 Flow control device
11/16/2004	US6817414 Acid coated sand for gravel pack and filter cake clean-up
11/16/2004	US6817412 Method and apparatus for the optimal predistortion of an electromagnetic signal in a downhole communication system
11/16/2004	US6817411 System for displacement of water in coalbed gas reservoirs
11/16/2004	US6817410 Intelligent well system and method
11/16/2004	US6817298 To intensify output of oil and gas wells; mining; producing a pulse of hot, high pressure gas
11/16/2004	CA2461522C Method to reduce the width of a slot in a pipe or tube
11/16/2004	CA2236570C Apparatus and method for forming a window or an outline thereof in the casing of a cased wellbore
11/11/2004	WO2004097171A1 Proppant for hydraulic fracturing of oil and gas wells and process for decreasing or eliminating 'flow-back' effect in oil and gas wells'
11/11/2004	WO2004097170A1 Expander system for stepwise expansion of a tubular element
11/11/2004	WO2004097169A1 Expander system for incremental expansion of a tubular element
11/11/2004	WO2004097168A1 Method of creating a borehole in an earth formation
11/11/2004	WO2004097167A1 Sand control secreen assembly and treatment method using the same
11/11/2004	WO2004097166A1 Method and apparatus for completing unconsolidated lateral well bores
11/11/2004	WO2004097160A2 System and method using a continuously variable transmission to control one or more system components
11/11/2004	WO2004097159A2 Thermal processes for subsurface formations
11/11/2004	WO2004097157A2 Method for treating bottomhole zone
11/11/2004	WO2004097155A2 Casing with isolated annular space
11/11/2004	WO2004096940A1 Water block removal with surfactant based hydrocarbonaceous liquid system
11/11/2004	WO2004096408A1 Hydrocyclone for down-hole use
11/11/2004	WO2004096406A1 Hydrocyclone for down-hole use
11/11/2004	US20040223853 Operation mode of an oilwell pumping unit for well development and device for performing said operation mode
11/11/2004	US20040222128 Mineral acid enhanced thermal treatment for viscosity reduction of oils (ECB-0002)
11/11/2004	US20040221996 Methods of and apparatus for casing a borehole
11/11/2004	US20040221992 portion of proppant particles in a fracturing fluid are coated with a resin or tackifying agent; and consolidating in fractures into high strength permeable masses
11/11/2004	US20040221988 Apparatus and method for treating an interval of a wellbore
11/11/2004	US20040221984 Debris screen for a downhole tool
11/11/2004	CA2736631A1 Packaging system for detonation cords, which is used for x-ray examination and safe shipping
11/11/2004	CA2523352A1 Expander system for stepwise expansion of a tubular element
11/11/2004	CA2523350A1 Expander system for incremental expansion of a tubular element
11/10/2004	EP1075583B1 Shaped-charge liner
11/10/2004	CN2654902Y Oil pump with external oil inlet and outlet valve
11/10/2004	CN2654901Y Anti-sand seizing thickening deep-pumping pump
11/10/2004	CN2654900Y Travelling strong opening valve
11/10/2004	CN2654854Y Petroleum thermal recovery mixed gas injector
11/10/2004	CN2654853Y Liquid draining hollow water distributor
11/10/2004	CN2654852Y Microhole sand filter
11/10/2004	CN2654838Y Replacing of pipe column under three layer oil extraction without moving pipe column
11/10/2004	CN1544797A Petroleum fracturing fluid mixing vehicle
11/10/2004	CN1544796A Frequency conversion hydraulic well pumping unit for reducing installation power
11/09/2004	US6814147 Multilateral junction and method for installing multilateral junctions
11/09/2004	US6814144 Well treating process and system
11/09/2004	US6814143 Downhole tubular patch, tubular expander and method
11/09/2004	US6814141 Method for improving oil recovery by delivering vibrational energy in a well fracture
11/09/2004	US6814139 Gravel packing apparatus having an integrated joint connection and method for use of same
11/09/2004	CA2272680C Expandable wellbore junction
11/09/2004	CA2233322C System for cutting materials in wellbores
11/07/2004	CA2747122A1 Well communication system
11/06/2004	CA2466139A1 Downhole tool and method for fracturing a subterranean well formation
11/06/2004	CA2427937A1 Debris screen for a downhole tool
11/04/2004	WO2004094976A1 Apparatus to measure differential pressure with settable pressure reference
11/04/2004	WO2004094786A1 Laser wellbore completion apparatus and method
11/04/2004	WO2004094784A2 A wellbore apparatus and method for completion, production and injection
11/04/2004	WO2004094782A1 Slot cavity
11/04/2004	WO2004094781A1 Methods of treating subterranean formations using hydrophobically modified polymers and compositions of the same
11/04/2004	WO2004094770A2 Downhole pump
11/04/2004	WO2004094769A2 Improved well screen with internal shunt tubes exit nozzles and connectors with manifold
11/04/2004	WO2004094767A2 Expanded liner system and method
11/04/2004	WO2004094766A2 Apparatus for radially expanding and plastically deforming a tubular member
11/04/2004	WO2004094761A2 Method for selectively positioning proppants in high contrast permeability formations to enhance hydrocarbon recovery
11/04/2004	WO2004094557A1 Composition and method for treating a subterranean formation
11/04/2004	US20040218981 Seafloor-surface connecting installation of a submarine pipeline installed at great depth
11/04/2004	US20040217065 Oil field separation facility control system utilizing total organic carbon analyzer
11/04/2004	US20040216925 Method and apparatus for drilling and lining a wellbore
11/04/2004	US20040216894 Solid expandable hanger with compliant slip system
11/04/2004	US20040216891 Expandable hanger with compliant slip system
11/04/2004	US20040216889 Expandable tieback
11/04/2004	US20040216886 Plunger enhanced chamber lift for well installations
11/04/2004	US20040216882 Remediation Treatment of Sustained Casing Pressures (SCP) In Wells with Top Down Surface Injection of Fluids and Additives
11/04/2004	US20040216881 Down hole oil and gas well heating system and method for down hole heating of oil and gas wells
11/04/2004	US20040216878 Method and apparatus for drilling and lining a wellbore
11/04/2004	US20040216877 Hydraulic tools for setting liner top packers and for cementing liners
11/04/2004	US20040216876 Acid-coated sand for gravel pack and filter cake clean-up
11/04/2004	US20040216866 Perforating gun
11/04/2004	US20040216633 Well perforating gun
11/04/2004	US20040216592 Method and apparatus for penetrating subsurface formations
11/04/2004	US20040216506 Tubing expansion
11/04/2004	US20040216297 Method for making a well perforating gun
11/04/2004	DE10297338T5 Mehrfachstanzungs-Rohrdurchlochungsvorrichtung Multiple Stan wetness-Rohrdurchlochungsvorrichtung
11/04/2004	CA2522542A1 Methods of treating subterranean formations using hydrophobically modified polymers and compositions of the same
11/04/2004	CA2521102A1 Downhole pump
11/04/2004	CA2484338A1 Apparatus to measure differential pressure with settable pressure reference
11/03/2004	EP1473437A2 Perforating gun
11/03/2004	EP1472024A1 Protective sleeve for threaded connections for expandable liner hanger
11/03/2004	EP1071862B1 Rotating subsea diverter
11/03/2004	CN2653127Y 堵塞器装置 Plugging device
11/03/2004	CN2653126Y Automatic regulater for injection quantity for oil field water injection well

1 ... 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 ... 642