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 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)
09/2003
09/04/2003WO2001058832A9 Shaped recesses in explosive carrier housings that provide for improved explosive performance background
09/04/2003US20030166470 Valve and position control using magnetorheological fluids
09/04/2003US20030164328 Apparatus for mixing fluids
09/04/2003US20030164253 Fluid drilling system
09/04/2003US20030164252 Chemically enhanced drilling methods
09/04/2003US20030164240 Controllable gas-lift well and valve
09/04/2003US20030164239 In situ thermal processing of an oil shale formation in a reducing environment
09/04/2003US20030164238 In situ thermal processing of a coal formation using a controlled heating rate
09/04/2003US20030164234 In situ thermal processing of a hydrocarbon containing formation using a movable heating element
09/04/2003US20030164037 Pressure sensor assembly for wellbore
09/03/2003EP1339950A1 Full bore automatic gun release module
09/03/2003EP1339949A1 Coating for preventing erosion of wellbore components
09/03/2003EP1339948A1 Gimbaled table riser support system
09/03/2003EP1339942A1 Expander
09/03/2003EP1339937A2 Improved method for stimulation of liquid flow in a well
09/03/2003EP1339811A2 Environmentally acceptable fluid polymer suspension for oil field services
09/03/2003EP0954675B1 Well head system
09/03/2003CN2570538Y Speed reducer for well pumping unit
09/03/2003CN2570455Y Gas lift fast discharge layer choosing acidification processing pipe column capable of seal proving
09/03/2003CN2570454Y Throttle flow quantitative distribution and injection apparatus
09/03/2003CN2570453Y Remote measurement integrated ergogram testing arrangement
09/03/2003CN2570452Y Gear wheel reversing long stroke pumping unit
09/03/2003CN1440497A Tubular threaded joint capable of being subjected to diametral expansion
09/03/2003CN1440486A Apparatus and method for separating fluids underground
09/03/2003CN1440485A Well managment System
09/03/2003CN1439810A Clean hole screw rod pump against sand block
09/03/2003CN1120038C Alkyl benzene sulfonate surfactant, its preparation method and application in tertiary oil recovery
09/02/2003US6614229 System and method for monitoring a reservoir and placing a borehole using a modified tubular
09/02/2003US6613720 Pumping; emulsion remains stable then destabilizes and releases chemical or biological agent; completion
09/02/2003US6612547 Downhole flow control devices
09/02/2003US6612537 Cartridge gate valve
09/02/2003US6612481 Wellscreen
09/02/2003US6612368 Flow completion apparatus
09/02/2003CA2290096C Heavy oil viscosity reduction and production
08/2003
08/28/2003WO2003071095A2 An oil pumping unit with a differential speed direction-switching mechanism
08/28/2003WO2003071086A2 Mono-diameter wellbore casing
08/28/2003WO2003035811A8 Remediation of a hydrocarbon containing formation
08/28/2003US20030161212 Mobile blending apparatus
08/28/2003US20030159831 Reciprocating pump vent-dump valve and methods of use
08/28/2003US20030159830 Reciprocating pump dump valve and methods of use
08/28/2003US20030159828 Gas operated pump for hydrocarbon wells
08/28/2003US20030159825 Multiple entrance shunt
08/28/2003US20030159820 Method and system for gas-lifting well effluents
08/28/2003US20030159581 Method and system for sea-based handling of hydrocarbons
08/27/2003EP1157186B1 Explosion prevention system for internal turret mooring system
08/27/2003EP1150881B1 Working ship
08/27/2003EP1140363B1 A nozzle for supersonic gas flow and an inertia separator
08/27/2003EP1133616B1 Method for transporting and installing an expandable steel tubular
08/27/2003EP0834000B1 Method for accelerating production
08/27/2003CN2568845Y Cooler of oil/gas screw hybrid transfer pump
08/27/2003CN2568839Y Anti-corrosion sand-proof oil-well pump
08/27/2003CN2568838Y Throwing type oil-in valve of oil-well pump
08/27/2003CN2568811Y Intermittent starting controller of pumping unit
08/27/2003CN2568810Y Frequency control intelligent controller of pumping unit
08/27/2003CN2568809Y Energy saving automatic controller of pumping unit
08/27/2003CN2568799Y Connector with controllable cut-off parts, its screen tube joint and screen tube
08/27/2003CN1438424A Submerged-in-oil electric piston pump
08/27/2003CN1438403A Double-driven oil-pumping machine
08/27/2003CN1119501C Method and tool for fracturing an underground formation, increasing recovery rate and injecting a proppant into the fracture
08/27/2003CN1119498C Device related to resers
08/26/2003US6609895 Carbon dioxide pump, pumping system, and method of controlling the same
08/26/2003US6609570 In situ thermal processing of a coal formation and ammonia production
08/21/2003WO2003069118A1 A multilateral junction and method for installing multilateral junctions
08/21/2003WO2003069117A1 Fracturing port collar for wellbore pack-off system
08/21/2003WO2003036043A3 Forming openings in a hydrocarbon containing formation using magnetic tracking
08/21/2003WO2003036023A8 Management of by-products from subterranean zones
08/21/2003US20030156947 Technique for protecting a submersible motor
08/21/2003US20030155315 Settling conduit; coil tubes; aspiration
08/21/2003US20030155152 Method of conducting in situ measurements of properties of a reservoir fluid
08/21/2003US20030155130 Interchangeable choke assembly
08/21/2003US20030155129 Plunger with novel sealing
08/21/2003US20030155128 Electric submersible pump with specialized geometry for pumping viscous crude oil
08/21/2003US20030155125 System for fracturing wells using supplemental longer-burning propellants
08/21/2003US20030155124 Methods of forming permeable sand screens in well bores
08/21/2003US20030155119 Expandable drilling template system
08/21/2003US20030155117 Plunger with flow passage and improved stopper
08/21/2003US20030155116 Plunger with multiple jackets
08/21/2003US20030155113 Production tool
08/21/2003US20030155112 Modular propellant assembly for fracturing wells
08/21/2003US20030155111 In situ thermal processing of a tar sands formation
08/21/2003CA2475564A1 A multilateral junction and method for installing multilateral junctions
08/20/2003EP1336721A2 Tubing head seal assembly
08/20/2003EP1336029A1 Filter apparatus for use in water wells
08/20/2003EP1336028A1 Transducer receiving voltage inputs rich in harmonics, such as square waves
08/20/2003EP1335784A2 Combined degassing and flotation tank
08/20/2003EP0886720B1 Underwater installation and method for building of an underwater installation
08/20/2003EP0866910B1 Apparatus and method for forming a window or an outline thereof in the casing of a cased wellbore
08/20/2003EP0853651B1 Cleaning compositions for oil and gas wells, lines, casings, formations and equipment and methods of use
08/20/2003CN2567366Y Continuous liquid-supply oil-well pump
08/20/2003CN2567365Y Rod-type anti-airlock oil-well pump
08/20/2003CN2567339Y Special device for adjusting stroke of beam-pumping unit
08/20/2003CN1118614C Sand-discharge oil production method and equipment
08/20/2003CA2659492A1 Electric submersible pump with specialized geometry for pumping viscous crude oil
08/19/2003US6607220 Radially expandable tubular connection
08/19/2003US6607036 Method for heating subterranean formation, particularly for heating reservoir fluids in near well bore zone
08/19/2003US6607033 In Situ thermal processing of a coal formation to produce a condensate
08/19/2003US6607032 Multi-layer screen and downhole completion method
08/19/2003CA2097145C Fatty acid additives for surfactant foaming agents
08/14/2003WO2003067201A2 Extend of detonation determination method using seismic energy
08/14/2003WO2003067028A1 Method for treating bottom-hole formation zone
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