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 41 - Equipment or details not covered by groups
Patents for E21B 41 - Equipment or details not covered by groups (7,984)
12/2012
12/19/2012CN101886520B Oilfield underground high-pressure fluid-driven spinning horizontal perforating device and application thereof
12/18/2012CA2462899C Operating electrolyte based components
12/13/2012US20120312552 Self-Tightening Clamps to Secure Tools along The Exterior Diameter of A Tubing
12/12/2012EP2532827A1 Downhole tool
12/12/2012CN202596672U Slide way buffer device
12/12/2012CN102822443A Subsea well intervention module
12/11/2012CA2607466C Ac powered service rig
12/06/2012US20120305244 Acoustic triggering devices for multiple fluid samplers and methods of making and using same
12/06/2012CA2837632A1 Subsea compressor directly driven by a permanent magnet motor with stator and rotor submerged in liquid
12/05/2012CN202578643U Automatic chemical feeding device of cluster well group oil pumping machine
12/05/2012CN202578642U Quantitative constant-flow continuous dosing anti-scaling and anti-separating device for a closed wellhead
12/05/2012CN102808599A Drilling line stringing-up safety method
12/04/2012US8322424 Use of a chopper mechanism to add fibers to a well
11/2012
11/29/2012US20120298372 Apparatus and method for abandoning a well
11/28/2012EP2527587A2 Reservoir evaluation system
11/28/2012EP2526257A1 Downhole device actuator and method
11/28/2012EP2526255A2 Differential pressure wellbore tool and related methods of use
11/28/2012EP2526254A1 Wellbore knock-out chamber and related methods of use
11/27/2012US8318085 Methods and compositions for inhibiting metal corrosion
11/27/2012US8316966 Method and system for accessing subterranean deposits from the surface and tools therefor
11/27/2012CA2580474C Treatment method for inhibiting corrosion of top of lines used in the oil industry
11/27/2012CA2565937C Continuous positive flow backflash prevention system
11/27/2012CA2558318C Providing a local response to a local condition in an oil well
11/22/2012WO2011120959A3 An actuator device
11/22/2012US20120292038 Variable buoyancy subsea running tool
11/22/2012US20120292010 Apparatus and methods for tubular makeup interlock
11/21/2012CN102791955A Differential pressure wellbore tool and related methods of use
11/21/2012CN101864929B Marine underwater exploration template
11/14/2012CN202531116U Tool for coating oil pipe screw thread sealing adhesive
11/14/2012CN102782247A Wellbore knock-out chamber and related methods of use
11/13/2012CA2677755C Arctic platform
11/07/2012EP2519707A1 Downhole guiding tool
11/06/2012CA2673619C Umbilical termination assembly and launching system
11/06/2012CA2521033C Drifting tubing
11/01/2012WO2012149007A2 Functionally gradient composite article
11/01/2012WO2012149004A2 Method of making and using a functionally gradient composite tool
11/01/2012WO2012148628A2 Flow-induced electrostatic power generator for downhole use in oil and gas wells
11/01/2012WO2012146725A1 Downhole cleaning system
11/01/2012US20120273219 Emergency disconnect system for riserless subsea well intervention system
11/01/2012CA2834472A1 Downhole cleaning system
11/01/2012CA2833981A1 Functionally gradient composite article
11/01/2012CA2833958A1 Method of making and using a functionally gradient composite tool
11/01/2012CA2833243A1 Flow-induced electrostatic power generator for downhole use in oil and gas wells
10/2012
10/31/2012EP2518263A1 Downhole cleaning system
10/31/2012CN101424177B Down-in type marginal oil field underwater drilling basal disc for drilling ship and manufacture and installation method
10/30/2012US8297377 Method and system for accessing subterranean deposits from the surface and tools therefor
10/30/2012US8297345 Down hole electrical connector and method for combating rapid decompression
10/26/2012CA2833731A1 System and method for drilling a borehole using streaming reference data
10/26/2012CA2830414A1 Well system with lateral main bore and strategically disposed lateral bores and method of forming
10/25/2012US20120269700 Natural Gas Reclaimer Device
10/24/2012EP2514914A1 Method of installing wellhead platform using an offshore unit
10/24/2012EP2514913A1 Method of demobilizing a self-elevating mobile platform
10/23/2012US8291974 Method and system for accessing subterranean deposits from the surface and tools therefor
10/23/2012CA2663988C Pothead for use in highly severe conditions
10/18/2012US20120261132 Lead impression wear bushing
10/17/2012EP2510186A1 Rotating pressure reduction turbine with cog wheels for a well stream having a hydraulic power transmission for operation of an electricity generator
10/16/2012CA2622717C Method and apparatus for communicating signals to an instrument in a wellbore
10/11/2012WO2012138321A1 Safety barrier alert
10/11/2012WO2012138230A1 Device for operations in proximity of an underwater installation
10/11/2012CA2830057A1 Safety barrier alert
10/10/2012CN202483519U Oil-water well operation pneumatic filling device
10/09/2012US8284075 Apparatus and methods for self-powered communication and sensor network
10/07/2012CA2835904A1 Mobile, modular, electrically powered system for use in fracturing underground formations
10/04/2012WO2012082315A3 A laboratory testing procedure to select acid or proppant fracturing stimulation treatment for a given carbonate formation
10/04/2012WO2011160801A3 Method and apparatus for closing or securing a well
10/04/2012US20120247832 System, method and apparatus for protecting downhole components from shock and vibration
10/04/2012US20120247782 Marine riser adjustable buoyancy modules
10/03/2012CN202467768U Console for down-the-hole drills
10/03/2012CN202467767U Cushioning target device for well control choke and relief line
10/03/2012CN102713138A Downhole guiding tool
09/2012
09/30/2012CA2735619A1 System, method and apparatus for protecting downhole components from shock and vibration
09/27/2012US20120241161 Flushing system
09/27/2012US20120241159 Remote Operated Vehicle Interface with Overtorque Protection
09/26/2012CN102691489A Method for on-site repair of lip of well head
09/26/2012CN101529049B Fluid flowrate determination
09/25/2012CA2692278C Composition and method for the solidification of toxic or hazardous drilling and agricultural waste
09/25/2012CA2506098C Apparatus for recycling of oil based drilling fluid contaminated with water
09/19/2012EP2501032A2 Power generator for booster amplifier systems
09/19/2012EP2500513A1 Method for geological storage of gas by geochemical analysis of noble gases
09/19/2012EP2500512A1 Replaceable CP anodes
09/19/2012EP2500511A1 Supplying electrical power in a hydrocarbon well installation
09/19/2012CN102678088A Supplying electrical power in hydrocarbon well installation
09/15/2012CA2770926A1 Downhole backspin retarder for progressive cavity pump
09/13/2012WO2012120143A1 Quaternary ammonium composition for inhibiting corrosion
09/13/2012CA2828830A1 Plug and pump system for routing pressurized fluid
09/12/2012EP2497899A2 Systems and methods of harvesting energy in a wellbore
09/12/2012EP2497898A2 Systems and methods of harvesting energy in a wellbore
09/12/2012EP2497844A1 Quaternary ammonium esters (Esterquats) containing composition for inhibiting corrosion of metal surface
09/12/2012EP2496789A2 Method of mitigating corrosion rate of oilfield tubular goods
09/12/2012CN202431253U Night operation visible safety device
09/11/2012CA2692678C Heated fluid injection using multilateral wells
09/11/2012CA2691187C High pressure, high voltage penetrator assembly
09/07/2012WO2012065896A3 Bop lock down
09/05/2012CN1930366B Method and apparatus for drilling waste disposal engineering and operations using a probabilistic approach
09/05/2012CN101737007B Self-propelled heavy desert workover rig chassis
09/05/2012CN101614108B Roller cone drill bits with optimized bearing structures
09/04/2012CA2556563C Power generation system
08/2012
08/30/2012WO2012116079A2 Subsea conductor anchor
08/30/2012WO2012116036A2 Coated sleeved oil gas well production devices
08/30/2012WO2012052715A9 Designed drilling fluids for ecd management and exceptional fluid performance
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