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)
03/2014
03/13/2014WO2013103785A3 One trip toe-to-heel gravel pack and liner cementing assembly
03/13/2014WO2013103455A3 Tracking non-uniform flooding fronts of gas injection in oil reservoirs
03/13/2014WO2013100209A3 Reciprocating subsurface pump
03/13/2014WO2013095886A3 Circumferential cams for mechanical case running tool
03/13/2014WO2013052290A3 Methods for improving coatings on downhole tools
03/13/2014US20140069659 Gas lift valves
03/13/2014US20140069654 Downhole Tool Incorporating Flapper Assembly
03/13/2014US20140069653 Method for transverse fracturing of a subterranean formation
03/13/2014US20140069652 Well Treatment Device, Method, and System
03/13/2014US20140069651 Split stream oilfield pumping systems
03/13/2014US20140069650 Method and apparatus for centrifugal blending system
03/13/2014US20140069648 Apparatus and method for isolating flow in a downhole tool assembly
03/13/2014US20140069647 Cased Hole Chemical Perforator
03/13/2014US20140069645 Methods to deliver fluids on a well site with variable solids concentration from solid slurries
03/13/2014US20140069644 Wellbore Servicing Compositions and Methods of Making and Using Same
03/13/2014US20140069643 Electron-poor orthoester for generating acid in a well fluid
03/13/2014US20140069642 Enhanced oil recovery system and a method for operating an underground oil reservoir
03/13/2014US20140069641 Integration of viscous oil recovery processes
03/13/2014US20140069638 Radio frequency enhanced steam assisted gravity drainage method for recovery of hydrocarbons
03/13/2014US20140069637 Resistive heater for in situ formation heating
03/13/2014US20140069636 Resistive heater for in situ formation heating
03/13/2014US20140069629 Wellbore esp system with improved magnetic gear
03/13/2014US20140069627 Resilient Downhole Flow Restrictor
03/13/2014CA2794356A1 Treatment of produced water with seeded evaporator
03/13/2014CA2789820A1 Treatment of produced water concentrate
03/12/2014EP2706190A2 Cased hole chemical perforator
03/12/2014EP2705287A1 Sliding sleeve valve and method for fluid treating a subterranean formation
03/12/2014EP2705216A2 A device for directing the flow of a fluid using a centrifugal switch
03/12/2014EP2705214A2 Adjustment and restraint system for a subsea flex joint
03/12/2014EP2705207A2 Liner cementation process and system
03/12/2014EP2705109A1 Methods and compositions using hydrocarbon- based crosslinking fluids with non- detectable btex levels
03/12/2014CN203481986U Sliding rail of oil pumping unit motor
03/12/2014CN203478182U Oil field coal-fired steam-injection boiler
03/12/2014CN203476309U Measurement and control system used in natural gas well detection separator
03/12/2014CN203476308U Underground coal gasification mining system in fossil energy coexistence region
03/12/2014CN203476307U Double-cluster hydraulic jetting string
03/12/2014CN203476306U Immovable string hydraulic jet staged fracturing device for horizontal well
03/12/2014CN203476305U Double-pump joint-operation heavy oil recovery device
03/12/2014CN203476304U Electric heater for downhole crude oil heating
03/12/2014CN203476303U Movable oil well sleeve medicine feeding device
03/12/2014CN203476302U Water plugging process pipe column allowing production layers to be adjusted mechanically
03/12/2014CN203476301U Shear type pressure action mechanism
03/12/2014CN203476300U Sand-control and paraffin-control flow guide pipe of oil well
03/12/2014CN203476299U Composite sand-prevention screen pipe
03/12/2014CN203476298U Oil filter sieve pipe and oil production device
03/12/2014CN203476297U Helical welding screen pipe protective jacket
03/12/2014CN203476296U Novel composite sieve tube
03/12/2014CN203476295U Expansion type composite screen tube
03/12/2014CN203476294U Throwing-in and pulling-out type submersible screw pump
03/12/2014CN203476293U Double-driving mechanism of pumping unit
03/12/2014CN203476292U Multi-well interaction hydraulic pumping unit
03/12/2014CN203476291U Hydraulic pumping unit with walking beam
03/12/2014CN203476290U Mobile-counterweight double-drum petroleum pumping machine
03/12/2014CN203476241U Polished rod lubricating and righting device of oil pumping unit
03/12/2014CN203470208U Flowing well anti-blocking nozzle
03/12/2014CN203469631U Washable well filter and water injection assisting device
03/12/2014CN103635656A System and method for injecting a treatment fluid into a wellbore and a treatment fluid injection valve
03/12/2014CN103628881A Oceanic mineral resource exploitation device and exploitation method
03/12/2014CN103628870A Rotational flow sand removing device
03/12/2014CN103628868A Method for predicating oil production quantity in high-volatility oil deposit natural gas injection development
03/12/2014CN103628865A Natural fracture injection test
03/12/2014CN103628864A Multi-segment fractured horizontal well intelligent test system and method
03/12/2014CN103628857A Crude oil gas-liquid separation process integrated method and equipment thereof
03/12/2014CN103628856A Water resistance gas production well spacing method for coal-bed gas block highly yielding water
03/12/2014CN103628855A Method for constructing underground gasification tunnels
03/12/2014CN103628854A Totally-enclosed high-voltage resistant magnetomotive multi-ball injector
03/12/2014CN103628853A Ball jumping type sliding sleeve device used under well
03/12/2014CN103628852A Centre for the preparation of additives for hydraulic fracturing operations and hydraulic fracturing process employing the preparation centre
03/12/2014CN103628851A Method for activating oil reservoir indigenous microorganisms to produce object surface active agents
03/12/2014CN103628850A Overall profile control and water plugging decision-making method for water-flooding oil field
03/12/2014CN103628849A Oil field CO2 injection technology
03/12/2014CN103628848A Multidirectional interlayer water flooding displacement oil extraction method and system
03/12/2014CN103628847A Bridge type integrated concentric water distributor
03/12/2014CN103628846A Method for improving CO2 displacement efficiency of low-permeability reservoir
03/12/2014CN103628845A Novel stereo sand control screen
03/12/2014CN103628844A Method for green mining of natural gas hydrate of shallow non-diagenesis stratum of deep seabed
03/12/2014CN103628843A Digitized beam-pumping unit
03/12/2014CN103628842A Oil pumping system of direct drive type permanent-magnet synchronous motor
03/12/2014CN103628841A Gas well downhole multistage ultrasonic atomization water drainage and gas production device
03/12/2014CN103627380A Water-soluble drag reducer as well as preparation method and application thereof
03/12/2014CN103090010B Non-contact sealing system
03/12/2014CN102618229B High-temperature resistant grain profile control and water shutoff agent as well as production method and use method thereof
03/12/2014CN102373900B Staged fracturing well completion method using hydraulic-controlled switch to open/close controllable valves
03/12/2014CN102128019B Integrated hydrogen production and hydrocarbon extraction
03/12/2014CN102121381B Shearing simulative device for near wellbore zone with circular platform barrel body
03/12/2014CN102061910B Method for establishing waterflooding extraction predictable physical model of sandstone oil deposit
03/12/2014CN102011573B Method for uniformly injecting multi-component thermal fluid in horizontal well
03/12/2014CN101842551B Addition of nonionic surfactants to water soluble block copolymers to increase stability of copolymer in aqueous solutions containing salt and/or surfactants
03/12/2014CN101598013B Oil extractor balance weight method and high efficient energy saving beam oil extractor
03/12/2014CN101449027B Systems and methods for producing oil and/or gas
03/12/2014CA2792625A1 Frac tanks
03/11/2014US8670966 Methods and systems for performing oilfield production operations
03/11/2014US8669214 Swellable polymer with anionic sites
03/11/2014US8668022 Method and apparatus for utilizing carbon dioxide in situ
03/11/2014US8668011 Method of hydraulically fracturing a formation
03/11/2014US8668009 Method and apparatus for controlling a volume of hydrogen input and the amount of oil taken out of a naturally occurring oil field
03/11/2014CA2770437C Viscoelastic surfactant fluids having enhanced shear recovery, rheology and stability performance
03/11/2014CA2748959C Sand decanter
03/11/2014CA2713745C Device, computer program product and computer-implemented method for backspin detection in an electrical submersible pump assembly
03/11/2014CA2668254C Oil sand slurry transportation system and method for variable slurry flow rates
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