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)
10/2012
10/10/2012CN202483546U Fracture sliding sleeve assembly capable of being opened and closed
10/10/2012CN202483545U Unshelled fracturing bomb
10/10/2012CN202483544U Porous injection fracturing head for fracturing well head equipment
10/10/2012CN202483543U Removable well fracturing fluid accumulating pool
10/10/2012CN202483542U Ground auxiliary heating device for ignition by fireflood electric heating
10/10/2012CN202483541U Oil production system for heavy oil reservoir
10/10/2012CN202483540U Thermal-production gas injection tubular column of pumping well
10/10/2012CN202483539U Thermal recovery steam injection well pipe string compensation packing device
10/10/2012CN202483538U Polymer-drive water-drive electric adjustable water nozzle
10/10/2012CN202483537U Water injection pressure regulator for water injection well
10/10/2012CN202483536U Preset working barrel of water injection well
10/10/2012CN202483535U Underground windowing pressure guide sand prevention TCP perforating device
10/10/2012CN202483534U Oil-extraction sand-prevention filtering device
10/10/2012CN202483533U Fixed annular rack oil pumping unit
10/10/2012CN202483532U Hierarchical oil production control device
10/10/2012CN202483531U Electromagnetism reversing pumping unit
10/10/2012CN202483530U Flexible long-stroke energy-saving oil pumping unit
10/10/2012CN202483529U Novel beam pumping unit
10/10/2012CN202483528U Pumping unit load display device
10/10/2012CN202483527U Wide belt type super-long stroke bidirectional pumping unit
10/10/2012CN202483526U Weight balancing auxiliary power energy-saving pumping unit
10/10/2012CN202483525U Self-balancing double-horse-head gear drive pumping unit
10/10/2012CN202483524U Self-balancing double-horse-head slide-block-rack driven oil pumping unit
10/10/2012CN202483523U Double-walking beam twin-well pumping unit
10/10/2012CN202483522U Double-drum oil pumping unit
10/10/2012CN202483521U Balance hydraulic adjusting device for oil pumping unit
10/10/2012CN202483520U Single-side telescoping lower-disposing tower type oil pumping unit
10/10/2012CN202483476U Beam hanger for polish rod of belt pumping unit
10/10/2012CN202478685U Filter material recoverer for oilfield wastewater filter tank
10/10/2012CN102725478A Fluid flow control device
10/10/2012CN102725477A Determining methane content of a bottom sample
10/10/2012CN102725376A Invert emulsion fluids with high internal phase concentration
10/10/2012CN102720488A Testing device and method for simulating flat carbonate rock reaction
10/10/2012CN102720480A Liquid-gas separation meter for oil well
10/10/2012CN102720476A O-shaped well physical simulation experiment device
10/10/2012CN102720475A Safe and energy-saving immovable-string viscosity-breaking and paraffin-inhibiting system for offshore oilfields
10/10/2012CN102720474A SAGD (steam assisted gravity drainage) wet steam injection station system, boiler water recycling method thereof
10/10/2012CN102720473A Method for exploiting coal bed gas
10/10/2012CN102720472A Integrated oil-water production-injection pipe
10/10/2012CN102720471A Safety valve of pressure control water injection well
10/10/2012CN102720470A Pumping unit for floating balance
10/10/2012CN102720469A Electric hydraulic oil pumping unit
10/10/2012CN102720468A Counterweight-following safety bars
10/10/2012CN102716604A High-efficiency spiral-flow type sand remover for oil field wellhead
10/10/2012CN102031931B Self-rotating jet drilling device
10/10/2012CN101936137B Discharging and mining pipe for coalbed methane
10/10/2012CN101769129B Integral layering gas recovery technology tubular column and application method thereof
10/10/2012CN101749001B Bailer type thick oil continuous exploiting device and operating method thereof
10/10/2012CN101699026B Hyposmosis oil pool microbial oil recovery method
10/10/2012CN101688440B Gas valve and production tubing with a gas valve
10/10/2012CN101598014B Perforation simulated target device for high temperature and high pressure laboratory
10/10/2012CN101372888B Tool for bypass gravel fillup
10/10/2012CN101368478B Four-link type oil pumping machine
10/10/2012CN101163859B In situ conversion process system using at least two areas with well positioned in subsurface
10/09/2012US8283174 Formation fluid sampling tools and methods utilizing chemical heating
10/09/2012US8283173 Process utilizing natural carbon-13 isotope for identification of early breakthrough of injection water in oil wells
10/09/2012US8282365 Pump for pumping fluid in a wellbore using a fluid displacer means
10/09/2012US8281864 Apparatus and method for recovering fluids from a well and/or injecting fluids into a well
10/09/2012US8281861 Circulated heated transfer fluid heating of subsurface hydrocarbon formations
10/09/2012US8281860 Method and system for treating a subterranean formation
10/09/2012US8281857 Methods of treating subterranean wells using changeable additives
10/09/2012US8281855 Shrouded tubular
10/09/2012US8281854 Connector for mounting screen to base pipe without welding or swaging
10/09/2012CA2693754C Drainage of heavy oil reservoir via horizontal wellbore
10/09/2012CA2685958C Method of propping agent delivery to the well
10/09/2012CA2681818C Systems and methods for reducing pump downtime by determining rotation speed using a variable speed drive
10/09/2012CA2668535C Downhole anchoring tools conveyed by non-rigid carriers
10/09/2012CA2629177C Foamed fluid additive for underbalance drilling
10/09/2012CA2618128C Methods and compositions for determination of fracture geometry in subterranean formations
10/09/2012CA2563549C Thermoset nanocomposite particles, processing for their production, and their use in oil and natural gas drilling applications
10/08/2012CA2736736A1 Downhole separator
10/07/2012CA2845347A1 Mobile, modular, electrically powered system for use in fracturing underground formations
10/07/2012CA2835904A1 Mobile, modular, electrically powered system for use in fracturing underground formations
10/07/2012CA2773950A1 Electrode system and sensor for an electrically enhanced underground process
10/07/2012CA2773843A1 Mobile, modular, electrically powered system for use in fracturing underground formations
10/04/2012WO2012135847A1 Biomass-enhanced natural gas from coal formations
10/04/2012WO2012135756A2 Biomass-based oil field chemicals
10/04/2012WO2012135587A2 Premium mesh screen
10/04/2012WO2012135555A2 System and method for reducing pressure fluctuations in an oilfield pumping system
10/04/2012WO2012135476A1 Methods and compositions to delay viscosification of treatment fluids
10/04/2012WO2012135419A2 High permeability frac proppant
10/04/2012WO2012135383A1 System for protecting against undersea oil spills
10/04/2012WO2012135292A2 Apparatus and method for completing wells using slurry containing a shape-memory material particles
10/04/2012WO2012135101A2 Perforating gun and arming method
10/04/2012WO2012134908A2 Selectable, internally oriented and/or integrally transportable explosive assemblies
10/04/2012WO2012134840A1 Subsea hydrocarbon recovery
10/04/2012WO2012134639A2 Esp with offset laterally loaded bearings
10/04/2012WO2012134327A1 Well operating method
10/04/2012WO2012134265A1 A system for the solidification of hydrocarbon wax
10/04/2012WO2012130936A1 Downhole pressure compensating device
10/04/2012WO2012130315A1 A marine riser isolation tool
10/04/2012WO2012129685A1 Method for managing channeling in geothermal recovery of hydrocarbon reservoirs
10/04/2012WO2012106039A3 Disconnect devices for downhole strings
10/04/2012WO2012099648A3 System and method for controlling formation fluid particulates
10/04/2012WO2012083016A3 Method and apparatus for controlled or programmable cutting of multiple nested tubulars
10/04/2012WO2012082491A3 Geothermal energy production
10/04/2012WO2012082489A3 Restricting production of gas or gas condensate into a wellbore
10/04/2012WO2012082378A3 Apparatus and method for controlling fluid flow from a formation
10/04/2012WO2012082343A3 Downhole fluid flow control system and method having direction dependent flow resistance
10/04/2012WO2012082315A3 A laboratory testing procedure to select acid or proppant fracturing stimulation treatment for a given carbonate formation
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