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)
10/2014
10/30/2014US20140323369 Use of amines in heavy oil transport
10/30/2014US20140318866 Method for assessing the performance of a drill bit configuration, and for comparing the performance of different drill bit configurations for drilling similar rock formations
10/30/2014US20140318800 Hydrostatic tubular lifting system
10/30/2014US20140318760 System and Method for the Access of Subterranean Deposits
10/28/2014US8869899 Method for pulling a crown plug
10/28/2014US8869886 Method to restrict the number of cycles in a continuous j-slot in a downhole tool
10/23/2014US20140311806 Generator driven by drill pipe
10/23/2014US20140311749 Riser weak link
10/21/2014US8865309 Releasable corrosion inhibitors
10/21/2014US8863844 Subsea arrangement
10/21/2014US8863833 Multi-point injection system for oilfield operations
10/21/2014US8863825 Control and supply unit
10/16/2014US20140305660 Shock Absorber, Related Methods and Apparatuses
10/16/2014US20140305656 Subsea control modules and methods related thereto
10/16/2014US20140305655 Riser tensioner conductor for dry-tree semisubmersible
10/14/2014US8857523 Downhole multiple well
10/09/2014US20140299331 Expandable Device for Use in a Well Bore
10/09/2014US20140299327 Apparatus and method for isolating a section of a pipe riser bore in the course of riser renewal
10/09/2014US20140299311 System and Method for Accessing Subterranean Deposits
10/07/2014US8851161 Cross-communication between electronic circuits and electrical devices in well tools
10/02/2014WO2014160464A2 A computer-implemented method, a device, and a computer-readable medium for data-driven modeling of oil, gas, and water
10/02/2014US20140290956 High pressure pump
10/02/2014US20140290942 Method for injecting low salinity water
10/02/2014US20140290934 Radio frequency heat applicator for increased heavy oil recovery
10/02/2014US20140290933 Debris barrier assembly
10/02/2014US20140290349 Method To Classify And Select Proppants
10/01/2014EP2783133A1 Underwater shackle
09/2014
09/30/2014US8849640 System and method for planning a drilling operation
09/30/2014US8844850 Dynamic self-cleaning downhole debris reducer
09/30/2014US8844688 Mouse hole damper device
09/30/2014US8844651 Three dimensional fluidic jet control
09/30/2014CA2766051C Sealed multilateral junction system
09/25/2014WO2014147236A1 Protective film for a downhole tool
09/25/2014US20140288909 Zonal allocation for multilayered subterranean reservoirs
09/25/2014US20140284105 Method of and a device and an electronic controller for mitigating stick-slip oscillations in borehole equipment
09/24/2014EP2781686A1 Protective film for a downhole tool
09/18/2014WO2014139035A1 Flameless fluid heater
09/18/2014WO2014138957A1 Downhole tubing rotators and related methods
09/18/2014US20140265580 Inertial energy generator for supplying power to a downhole tool
09/18/2014US20140263095 Chemical strainer
09/18/2014US20140262503 Perforation Gun String Energy Propagation Management with Tuned Mass Damper
09/18/2014US20140262308 Supercharging pressure in a subsea well system
09/18/2014US20140262305 Control valve timing
09/18/2014US20140262304 Diverter Stabbing Dog
09/18/2014US20140262260 Sand Control Screen Having Improved Reliability
09/18/2014US20140262246 Method for controlling well bore pressure based on model prediction control theory and systems theory
09/18/2014US20140262218 Apparatus and Method for Generating Power Downhole and Using Same For Performing a Downhole Operation
09/18/2014US20140262217 Wear Resistant Coatings For Radial Bearings and Downhole Tools
09/18/2014US20140261695 Apparatus and methods for providing natural gas to multiple engines disposed upon multiple carriers
09/16/2014US8838418 Oilfield equipment identification method and apparatus
09/16/2014US8836179 Systems and methods of energy harvesting with positive displacement motor
09/16/2014US8833474 Method and apparatus for using pressure cycling and cold liquid CO2 for releasing natural gas from coal and shale formations
09/16/2014US8833451 Window joint for lateral wellbore construction and method for opening same
09/16/2014US8833450 Nitrogen containing compounds as corrosion inhibitors
09/16/2014US8833439 Galvanically isolated exit joint for well junction
09/16/2014US8833287 Subsea anchor
09/16/2014US8832915 Apparatus and method for the connection of conduits
09/15/2014CA2846139A1 Anti-alteration wellhead vault
09/14/2014CA2846297A1 Method of reducing silicosis caused by inhalation of silica-containing proppant, such as silica sand and resin-coated silica sand, and apparatus therefor
09/14/2014CA2809766A1 Pipe fitting insulator
09/12/2014WO2014138674A1 Theradform locking device and methods
09/12/2014WO2014134655A1 Estimating material properties
09/11/2014US20140250999 Method and system for reservoir surveillance utilizing a clumped isotope and/or noble gas data
09/09/2014US8826991 Variably configurable wellbore junction assembly
09/04/2014WO2014133396A1 Method and structure for protecting a crushable plug in a pipe section for hydrocarbon production, and use thereof
09/04/2014WO2014131126A1 System and method for managing batteries for use in a downhole drilling application
09/02/2014US8825430 Differential pressure systems and methods for measuring hydraulic parameters across surface water-aquifer interfaces
09/02/2014US8820412 Methods, systems and apparatus for circulating fluid within the annulus of a flexible pipe riser
09/02/2014US8820410 Control system for blowout preventer stack
08/2014
08/28/2014WO2014064190A3 Method of calculation loads on a subsea component.
08/28/2014WO2014035901A3 Motor and rotor catch assembly
08/28/2014US20140238677 Chitin nanocrystal containing wellbore fluids
08/28/2014US20140238657 Erosion Ports for Shunt Tubes
08/27/2014CA2841677A1 Integrated arctic fracking apparatus and methods
08/26/2014US8818729 System and method for formation detection and evaluation
08/26/2014US8813840 Method and system for accessing subterranean deposits from the surface and tools therefor
08/21/2014WO2014126959A2 Systems, methods, and computer-readable media for modeling complex wellbores in field-scale reservoir simulation
08/21/2014US20140234059 Remote wellsite material tracking
08/21/2014US20140231092 Annular Pressure Relief System
08/21/2014US20140231076 Method and apparatus to position and protect control lines being coupled to a pipe string on a rig
08/21/2014US20140231072 Method and system of planning and/or drilling wellbores
08/21/2014US20140230232 Method and Device for Installing Multiple Fiber Optic Cables in Coiled Tubing
08/21/2014CA2843673A1 Remote wellsite material tracking
08/19/2014US8810427 Control system of an actuator for the actuation of submarine devices
08/14/2014US20140224943 Articulation Festoon Cabling Beams
08/14/2014US20140224082 Removable hand guard for drilling rig hand tongs
08/13/2014EP2764200A2 System for real-time monitoring and transmitting hydraulic fracture seismic events to surface using the pilot hole of the treatment well as the monitoring well
08/13/2014CN203769728U 一种油田丛式可抽芯式阳极井 One kind of oil can be pumped and cluster core type anode wells
08/13/2014CN203769727U 拆安井架防坠落装置 An anti-fall device demolition derrick
08/13/2014CN203769726U 多功能可调式混加装置 Adjustable mix plus multifunction device
08/13/2014CN103987918A 控制井下作业的方法 The method of controlling underground work
08/13/2014CN103987914A 用于井下线缆工具串的电力分配方法 Electricity distribution method for downhole cable toolstring
08/12/2014US8800663 Leadscrew and sub-sea connector
08/12/2014CA2724453C Methods and systems for mitigating drilling vibrations
08/12/2014CA2644919C Separation device for material from a drilling rig situated on the seabed
08/07/2014WO2014118503A1 Apparatus for power generation
08/07/2014US20140216758 Deploying an expandable downhole seat assembly
08/07/2014US20140216713 Downhole tool with erosion resistant layer
08/06/2014EP2762672A2 Method for real-time monitoring and transmitting hydraulic fracture seismic events to surface using the pilot hole of the treatment well as the monitoring well
08/06/2014EP2761127A2 System, apparatus, and method for utilization of bracelet galvanic anodes to protect subterranean well casing sections shielded by cement at a cellar area
1 2 3 4 5 6 7 8 9 10 11 12 13 ... 80