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)
12/2012
12/05/2012CN202578645U Energy-saving pumping unit
12/05/2012CN202578644U A mechanical-reversing long-stroke pumping unit without a walking beam
12/05/2012CN202578643U Automatic chemical feeding device of cluster well group oil pumping machine
12/05/2012CN202578635U Acidization flowback valve of oil-water well
12/05/2012CN202578634U Switching type rail sealing sliding sleeve
12/05/2012CN202578628U Check valve
12/05/2012CN202578614U Well head device special for oil gas well fracturing construction
12/05/2012CN202578543U Vacuum thermal insulation circulating pipe
12/05/2012CN102812205A Method and materials for proppant fracturing with telescoping flow conduit technology
12/05/2012CN102812204A Systems And Methods For Positioning Horizontal Wells Within Boundaries
12/05/2012CN102812203A Method for dynamically assessing petroleum reservoir competency and increasing production and recovery through asymmetric analysis of performance metrics
12/05/2012CN102812201A Injection Drill Bit
12/05/2012CN102808607A Plunger device for gas well online measurement and plunger type drainage gas recovery system
12/05/2012CN102808605A Adjustable anti-freezing sleeve constant-pressure air release recovery device
12/05/2012CN102808604A Fracturing high-pressure packing and filling mechanism
12/05/2012CN102808603A Cold and hot alternating high-speed airflow oil shale crushing device and method for crushing oil shale
12/05/2012CN102808602A Automatic speed-changing wide-swing-angle oil pumping machine
12/05/2012CN102808601A Efficient energy-saving oil pumping machine
12/05/2012CN102808600A Constant force spring energy-saving oil production equipment
12/05/2012CN102808594A Device and method for multi-stage layering sand prevention and well completion by one-step pipe column
12/05/2012CN102230578B Double-pump multi-path high-precision filling device and control method thereof
12/05/2012CN102116168B Gas drainage system and method for hyposmosis soft coal seams
12/05/2012CN101929330B Remote control cock type steel ball delivery system
12/05/2012CN101806205B Adjustable constant-flow multifunctional blanking plug
12/04/2012US8322464 Method and apparatus for vacuum collecting and gravity depositing drill cuttings
12/04/2012US8322447 Generating power in a well
12/04/2012US8322445 Well jet device
12/04/2012US8322444 Surface refillable protector
12/04/2012US8322440 Integrated electrical connector for use in a wellhead tree
12/04/2012US8322437 Method and system for confining and salvaging oil and methane leakage from offshore locations and extraction operations
12/04/2012US8322435 Pressure driven system
12/04/2012US8322434 Vertical annular separation and pumping system with outer annulus liquid discharge arrangement
12/04/2012US8322431 Wellbore servicing compositions and methods of making and using same
12/04/2012US8322430 Pipes, systems, and methods for transporting fluids
12/04/2012US8322425 System and method for controlling one or more fluid properties within a well in a geological volume
12/04/2012US8322424 Use of a chopper mechanism to add fibers to a well
12/04/2012US8322421 Lewis acid as gelation retarder for crosslinkable polymer compositions
12/04/2012US8322420 Toe-to-heel gravel packing methods
12/04/2012US8322419 Method of gravel packing a well containing synthetic or oil-based drilling fluids
12/04/2012US8322418 Offset interior slurry discharge
12/04/2012US8322417 Temperature triggered actuator for subterranean control systems
12/04/2012US8322410 System, method and apparatus for enhancing wellbore treatment fluid flexibility
12/04/2012US8322409 Method and device for making lateral openings out of a wellbore
12/04/2012CA2745704C Reducing volatile phosphorous in hydrocarbon based fracturing fluids
12/04/2012CA2729807C Methods for downhole sequestration of carbon dioxide
12/04/2012CA2684406C Charge holder apparatus
12/04/2012CA2669007C Wellbore method and apparatus for completion, production and injection
12/04/2012CA2651527C Method and system for enhancing a recovery process employing one or more horizontal wellbores
12/04/2012CA2544835C Bubble breaker assembly
12/02/2012CA2741916A1 Integration of viscous oil recovery processes
12/01/2012CA2778461A1 Tandem progressive cavity pumps
11/2012
11/30/2012CA2744556A1 Methods of treating the near-wellbore zone of the reservoir
11/29/2012WO2012162528A2 Pump system
11/29/2012WO2012162308A2 Select-fire stackable gun system
11/29/2012WO2012162294A2 Perforating string with magnetohydrodynamic initiation transfer
11/29/2012WO2012162157A2 Formation treatment system and method
11/29/2012WO2012162117A1 Wellbore fluid used with swellable elements
11/29/2012WO2012161910A2 Window joint for lateral wellbore construction and method for opening same
11/29/2012WO2012161827A2 Turbulence inducing device and methods of use
11/29/2012WO2012138848A3 Portable fluid storage system
11/29/2012WO2012135555A3 System and method for reducing pressure fluctuations in an oilfield pumping system
11/29/2012WO2012135419A3 High permeability frac proppant
11/29/2012WO2012074836A4 Removable insert for formation of a recess in a tubular by expansion
11/29/2012WO2011128852A3 Automatic stage design of hydraulic fracture treatments using fracture height and in-situ stress
11/29/2012US20120298379 Method and system for lining a section of a wellbore with an expandable tubular element
11/29/2012US20120298375 Pumpjack Production Control
11/29/2012US20120298374 Well head containment fitting device
11/29/2012US20120298368 Silica Control Agents for Use in Subterranean Treatment Fluids
11/29/2012US20120298367 Earth heat transfer loop appartus
11/29/2012US20120298364 Multi-phase down hole injector
11/29/2012US20120298363 Perforating string with magnetohydrodynamic initiation transfer
11/29/2012US20120298361 Select-fire stackable gun system
11/29/2012US20120298357 Compositions and systems for combatting lost circulation and methods of using the same
11/29/2012US20120298356 Dual-Purpose Steam Injection and Production Tool
11/29/2012US20120298354 Triggering polymerization on-demand for water control downhole
11/29/2012US20120298353 Method for growing and metabolizing microbes
11/29/2012US20120298352 Control Screen Assembly
11/29/2012US20120298351 Fracturing Nozzle Assembly with Cyclic Stress Capability
11/29/2012DE112010004042T5 Kohlenwasserstoffbetriebsfluide und Verfahren zu deren Verwendung Hydrocarbon operating fluids and methods of use thereof
11/29/2012CA2836582A1 Wellbore fluid used with swellable elements
11/29/2012CA2834794A1 Formation treatment system and method
11/29/2012CA2831802A1 Window joint for lateral wellbore construction and method for opening same
11/28/2012EP2527588A2 Method and apparatus for monitoring offshore contamination
11/28/2012EP2527586A1 Method for induced fracturing in a subsurface formation
11/28/2012EP2526259A1 A device for intervention in a well comprising a pyrotechnic system, installation and method associated therewith
11/28/2012EP2526258A1 Flow control system with sand screen
11/28/2012CN202563352U Multifunctional speed-regulating follow-up device for pumping unit
11/28/2012CN202560205U Device for anaerobic preparation and anaerobic preservation oil field injection system
11/28/2012CN202560203U Associated natural gas brine well produced fluid concentration monitoring device
11/28/2012CN202560201U Experimental apparatus for filtering solid impurities in crude oil
11/28/2012CN202560200U Novel oil extraction and separation device for oil well
11/28/2012CN202560199U Fracturing truck used for oilfield or coal-bed gas exploitation
11/28/2012CN202560198U Heating device capable of utilizing steams to assist gravity oil drainage high temperature gathering and transportation system to warm pipe
11/28/2012CN202560197U Thick oil steam soak simulation test device
11/28/2012CN202560196U Temperature sensitive casing thermal stress compensator
11/28/2012CN202560195U Wellhead cross special for double-barreled steam injection well
11/28/2012CN202560194U Simulation experiment system exploiting oil gas by heating underground oil shale through microwaves
11/28/2012CN202560193U Intelligent injectant-feeding device for gas fields
11/28/2012CN202560192U Multi-medicament multi-wellhead remote automatic control chemicals feeding device
11/28/2012CN202560191U High-pressure sealed middle piston container for indoor oil displacement experiments
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