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)
11/2012
11/20/2012CA2684410C Charge holder apparatus
11/20/2012CA2675823C Hydraulic fracture initiation and propagation control in unconsolidated and weakly cemented sediments
11/20/2012CA2662988C A method and system for removing liquid from a gas well
11/15/2012WO2012155045A2 Destructible containers for downhole material and chemical delivery
11/15/2012WO2012155018A2 Downhole refrigeration using an expendable refrigerant
11/15/2012WO2012154971A2 System and method to measure hydrocarbons produced from a well
11/15/2012WO2012154521A2 Novel quaternary foamers for downhole injection
11/15/2012WO2012154180A1 Perforating gun assembly and method for controlling wellbore pressure regimes during perforating
11/15/2012WO2012154167A1 Pressure and flow control in drilling operations
11/15/2012WO2012151605A1 Conditioning of syngas from underground coal gasification
11/15/2012WO2012125261A3 Flow control screen assembly having remotely disabled reverse flow control capability
11/15/2012WO2012125249A3 System and method for fracturing a formation and a method of increasing depth of fracturing a formation
11/15/2012WO2012112668A3 Surface close proximity wells
11/15/2012WO2012085556A3 Downhole apparatus and method
11/15/2012WO2012022315A3 Device for forming a protected region within a body of water and method for constructing a device
11/15/2012WO2011151293A3 Well head cover tool and method
11/15/2012WO2011151021A3 Device for leading away a material emanating from the seabed and method
11/15/2012US20120285702 System and method for actuating tools downhole
11/15/2012US20120285701 Method For Using Dynamic Target Region For Well Path/Drill Center Optimization
11/15/2012US20120285700 Harvesting By-Passed Resource
11/15/2012US20120285695 Destructible containers for downhole material and chemical delivery
11/15/2012US20120285694 Enhanced foam stability applications and methods
11/15/2012US20120285693 Controlled release biocides in oilfield applications
11/15/2012US20120285692 Methods of zonal isolation and treatment diversion
11/15/2012US20120285691 Permeability modification and water shut off composition and process
11/15/2012US20120285690 Multi-Stage Methods and Compositions for Desensitizing Subterranean Formations Faces
11/15/2012US20120285689 Methods and Compositions for Clay Control
11/15/2012US20120285688 Method of well treatment using synthetic polymers
11/15/2012US20120285687 Selective fracturing tool
11/15/2012US20120285685 Method of Using Asparaginase as a Polyacrylamide Enzyme Breaker
11/15/2012US20120285681 Method for Optimizing In-Situ Bioconversion of Carbon-Bearing Formations
11/15/2012DE112010004901T5 Mehrstufiges Lösungsmittel-Gewinnungsverfahren für Schweröl- Lagerstätten Multi-stage solvent extraction process for heavy oil deposits
11/15/2012CA2835130A1 Destructible containers for downhole material and chemical delivery
11/15/2012CA2832720A1 Pressure and flow control in drilling operations
11/14/2012EP2522997A1 Monitoring hydrocarbon fluid flow
11/14/2012EP2521840A1 Process and apparatus to improve reliability of pinpoint stimulation operations
11/14/2012EP2521839A1 Wellbore treatment apparatus and method
11/14/2012EP2521838A1 Autonomous inflow control device and methods for using same
11/14/2012CN202533816U Remote automatic control apparatus for return valve of water separator in oil field water flooding station
11/14/2012CN202532152U Belt pulley shield for oil pumping unit
11/14/2012CN202531972U Hydraulic control device for sand outlet of fracturing sand tank car
11/14/2012CN202531702U Pumping unit brake safety device
11/14/2012CN202531701U Beam-pumping unit brake top type insurance hook
11/14/2012CN202531496U Droppable and fishable gas injected injection pump for gas lift
11/14/2012CN202531390U Plunger for gas recovery by discharging water in gas well
11/14/2012CN202531161U Locating device for layered water injection with small clamping distance
11/14/2012CN202531154U Rapid pressure oil device of separator of metering station
11/14/2012CN202531152U On-line metering system for separation of oil, water and gas
11/14/2012CN202531151U Hydraulic fracturing device for coal mine laneway pressure relief
11/14/2012CN202531150U Fishable fracturing sliding sleeve sand spraying device
11/14/2012CN202531149U Three-pipe thermal recovery well head device shell
11/14/2012CN202531148U Separate steam injection slide sleeve
11/14/2012CN202531147U Oilfield polymer microsphere injection device
11/14/2012CN202531146U Eccentric working barrel for injecting chemical agents to oil tube
11/14/2012CN202531145U Foam drainage agent long-distance automatic injecting device for gas recovery through foam drainage
11/14/2012CN202531144U Self-controlled multifunctional oil well water doping device
11/14/2012CN202531143U Digital type underground separated layer water injection measurement and adjustment technological tubular column
11/14/2012CN202531142U Salvage-free adjustable water nozzle
11/14/2012CN202531141U Bridge type eccentric water distributor with fixed angle
11/14/2012CN202531140U Double-sealed hot water flooding tubular column of directional well in oil field
11/14/2012CN202531139U Annulus insulation type hot water drive injection well pipe column of oil field
11/14/2012CN202531138U Eccentric water distributor for water injection well with small casing
11/14/2012CN202531137U Automatic measuring, regulating and monitoring separated layer injection water distributor
11/14/2012CN202531136U Automatic measuring-adjusting and monitoring separate injection system for water injection well
11/14/2012CN202531135U Oil field water injection profile control agent injection device
11/14/2012CN202531134U One-dimensional physical simulation experiment system for top injection air and gravity auxiliary drive oil production
11/14/2012CN202531133U Water plugging technological tubular column for sealing middle layer and exploiting two ends of oil well
11/14/2012CN202531132U Adjustable oil nozzle
11/14/2012CN202531131U Positive pressure blasting device
11/14/2012CN202531130U Ground sand prevention device for gas well
11/14/2012CN202531129U Intelligent oil pump
11/14/2012CN202531128U Double-crank double-involute composite head sheave pumping unit
11/14/2012CN202531127U Single-crank secondary-balanced energy-saving oil pumping machine
11/14/2012CN202531126U Full-balanced energy-saving device of walking-beam pumping unit
11/14/2012CN202531125U Automatic adjustment balance device for beam-pumping unit
11/14/2012CN202531124U Oval integrally-forged eccentric gas-lift mandrel for oil and gas field
11/14/2012CN202531123U Wire tightening device for adjusting belt pulley of beam-pumping unit
11/14/2012CN202531122U Nondestructive polish rod pump bumper
11/14/2012CN202531121U Non-beam pumping unit
11/14/2012CN202531120U Blowout drainage device for natural gas well
11/14/2012CN202531119U Hydraulic pumping unit
11/14/2012CN202531118U LED simulation sucker rod stroke device
11/14/2012CN202531117U Driving braking transmitting rotary drum integrated-type oil pumping unit
11/14/2012CN202531054U Friction reversing type pumping unit moving tool
11/14/2012CN202531037U Segregated completion tubular column of bottom water tight gas reservoir horizontal well
11/14/2012CN202531036U Negative pressure flow string for oil well
11/14/2012CN202531035U Water injection string of flexible composite tubing
11/14/2012CN202527087U Ground foam generator for oil displacement
11/14/2012CN1886574B Improvements in and relating to oil well perforators
11/14/2012CN1648465B System and method for offshore production with well control
11/14/2012CN102782922A Fuel cells
11/14/2012CN102782249A Flow control device and flow control method
11/14/2012CN102781561A Bubbles generation device and method
11/14/2012CN102777180A Method for actively and regionally preventing and controlling rock burst in coal mines
11/14/2012CN102777163A Method for opening sand-blasting hole of horizontal well by coiled tubing
11/14/2012CN102777162A Oriented fracturing device for horizontal well
11/14/2012CN102777161A Wing-shaped mixed-phase steam intake column uniform-dryness distributor
11/14/2012CN102777160A Carbon dioxide sand mulling oil production process for oilfield and special carbon dioxide sand mulling device
11/14/2012CN102777159A CO2(Carbon Dioxide)-injection well shaft flow state confirmation and parameter optimization method
11/14/2012CN102777158A Testing and adjusting linkage system and operating process thereof
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