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 47 - Survey of boreholes or wells
Patents for E21B 47 - Survey of boreholes or wells (31,352)
10/2008
10/30/2008US20080264639 Method and Apparatus for Orienting Perforating Devices
10/30/2008US20080264634 Well Jet Device and the Operating Method Thereof
10/30/2008US20080264633 Signalling Downhole
10/30/2008US20080264631 Depth Correlation Device for Fiber Optic Line
10/30/2008US20080264624 Downhole Sensor Assembly
10/30/2008US20080264163 Tracking fluid displacement along a wellbore using real time temperature measurements
10/30/2008US20080264162 Tracking fluid displacement along a wellbore using real time temperature measurements
10/30/2008CA2684281A1 System and method for crossflow detection and intervention in production wellbores
10/30/2008CA2683994A1 System and method for water breakthrough detection and intervention in a production well
10/29/2008EP1985799A2 Casing conveyed perforating process and apparatus
10/29/2008CN201141299Y Drilling instrument system
10/29/2008CN201141298Y Heat preserving structure for logger
10/29/2008CN201141297Y Data acquisition analysis system and data acquisition terminal for water injection well
10/29/2008CN101294492A Slurry pulsator
10/29/2008CN101294491A Self-adaption transmission method and system for down-hole information
10/29/2008CN101294490A Multi-point temperature measurement method and temperature measurement equipment for down-hole formation
10/29/2008CN101294489A Apparatus for testing applied force and displacement of down-hole tubular pile
10/28/2008US7441609 Method of decreasing the disintegration of shale-containing cuttings and drilling fluid therefor
10/28/2008US7441605 Optical sensor use in alternate path gravel packing with integral zonal isolation
10/28/2008US7441595 Method and apparatus for single-run formation of multiple lateral passages from a wellbore
10/28/2008CA2481751C Apparatus and methods for pressure compensated contact with the borehole wall
10/28/2008CA2354128C Apparatus and method for well fluid sampling
10/23/2008WO2008127948A1 Modeling the transient behavior of bha/drill string while drilling
10/23/2008WO2008127681A1 Inverse-vector method for smoothing dips and azimuths
10/23/2008WO2008127148A1 Well jet device
10/23/2008WO2008127147A1 Well jet device for hydraulically fracturing and surveying wells
10/23/2008WO2008125581A1 Drill bit assembly and method of performing an operation in a wellbore
10/23/2008WO2008106544A3 System and method for reservoir characterization using underbalanced drilling data
10/23/2008WO2008106022B1 Method and apparatus for collecting drill bit performance data
10/23/2008WO2008060893B1 Large bore packer and methods of setting same
10/23/2008WO2008042772A3 Formation testing and sampling tool including a coring device
10/23/2008WO2008014039A3 System for communicating downhole information through a wellbore to a surface location
10/23/2008US20080262735 System and Method for Water Breakthrough Detection and Intervention in a Production Well
10/23/2008US20080261044 Rapidly self-assembled thin films and functional decals
10/23/2008US20080259728 Method of Filtering Pump Noise
10/23/2008US20080258733 Electromagnetic Wave Resistivity Tool Having a Tilted Antenna for Geosteering Within a Desired Payzone
10/23/2008US20080257548 Methods and apparatus for monitoring components of downhole tools
10/23/2008US20080257544 System and Method for Crossflow Detection and Intervention in Production Wellbores
10/23/2008US20080257030 Petrophysical Fluid Flow Property Determination
10/23/2008CA2683618A1 Inverse-vector method for smoothing dips and azimuths
10/23/2008CA2682290A1 Drill bit assembly and method of performing an operation in a wellbore
10/23/2008CA2679752A1 Well jet device
10/22/2008EP1983156A1 Method and apparatus for monitoring the advance of seawater into fresh water aquifers near costal cities
10/22/2008EP1983155A1 Method and Apparatus for Monitoring the Advance of Seawater into Fresh Water Aquifers Near Coastal Cities
10/22/2008EP1983154A1 In-situ correction of triaxial accelerometer and magnetometer measurements made in a well
10/22/2008EP1315881B1 Method and system for perforating
10/22/2008CN201138223Y Petroleum metering apparatus of single well with low gas-oil ratio
10/22/2008CN201137490Y Computer controlled down-hole instrument string test box
10/22/2008CN201137489Y Wellhead pressure test
10/22/2008CN201137488Y Well depth signal simulator
10/22/2008CN201137487Y Skip meter
10/22/2008CN101291151A Coding and decoding method for down-hole information transmission
10/22/2008CN101291050A Electric cable winding/paying off device, down-hole information transmission apparatus and method
10/22/2008CN101291015A Electromagnetic emitting antenna along with drill, down-hole data communication system and method
10/22/2008CN101289935A Near-bit geological guiding probe system
10/22/2008CN101289934A Outer tube oil gas water interface monitoring device
10/22/2008CN100427719C Oil-well realtime monitoring system and its controlling method
10/21/2008US7439875 Battery conservation
10/21/2008US7438135 Method of suspending, completing and working over a well
10/21/2008US7438128 Identifying zones of origin of annular gas pressure
10/21/2008CA2516872C Digital core workflow method using digital core images
10/21/2008CA2471072C Modular design for lwd/mwd collars
10/21/2008CA2360930C Multilateral well and electrical transmission system
10/17/2008CA2628681A1 Methods of correcting accelerometer and magnetometer measurements
10/16/2008WO2008124765A1 Real-time onsite internet communication with well manager for constant well optimization
10/16/2008WO2008124325A1 Fiber support arrangement for a downhole tool and method
10/16/2008WO2008123854A1 Interchangeable measurement housings
10/16/2008WO2007130749A3 Drill bit assembly with a logging device
10/16/2008US20080253228 Drill string telemetry methods and apparatus
10/16/2008US20080251292 Device for Monitoring a Drilling or Coring Operation and Installation Comprising Such a Device
10/16/2008US20080251251 Wellhead and control stack pressure test plug tool
10/16/2008US20080251247 Transmission Line Component Platforms
10/16/2008US20080250853 Device for the Quantitative Analysis of Debris
10/15/2008CN201133244Y Double stage pressure-measuring pressure transmitter
10/15/2008CN201133243Y Mud liquid level alarm for well drilling
10/15/2008CN201133230Y Open type cable hydraulic blowout preventer
10/15/2008CN101287888A Well having inductively coupled power and signal transmission
10/15/2008CN101285380A Measuring method for water level of drilled shaft
10/15/2008CN100425799C Down-well pipe finder machinery frame
10/14/2008US7436320 Sensor system and method of communicating data between a downhole device on a remote location
10/14/2008US7434631 Apparatus and method of controlling motion and vibration of an NMR sensor in a drilling BHA
10/14/2008US7434630 Surface instrumentation configuration for drilling rig operation
10/14/2008US7434620 Cavity positioning tool and method
10/14/2008CA2476789C Gyroscopic steering tool using only a two-axis rate gyroscope and deriving the missing third axis
10/14/2008CA2296108C Actuation system for a downhole tool
10/13/2008CA2628997A1 Drill string telemetry methods and apparatus
10/09/2008WO2008119963A1 Use of micro-electro-mechanical systems (mems) in well treatments
10/09/2008WO2008076909A3 Acoustic fluid analysis method
10/09/2008WO2008048966A3 Method of collecting hydrocarbons using a barrier tunnel
10/09/2008WO2007098312A8 Single point and fiber optic temperature measurement for correction of a gas column weight in a well
10/09/2008US20080247273 Apparatus and methods for self-powered communication and sensor network
10/09/2008US20080246483 Tracking the positional relationship between a boring tool and one or more buried lines using a composite magnetic signal
10/09/2008US20080245572 Well Jet Device and the Operating Method Thereof
10/09/2008CA2628660A1 Real-time onsite internet communication with well manager for constant well optimization
10/08/2008EP1978206A2 Method and apparatus for controlling wellbore equipment
10/08/2008EP1977272A1 Antenna cutout in a downhole tubular
10/08/2008EP1977076A1 Positional control of downhole actuators
10/08/2008EP1287227B1 Downhole window finder and method of using the same
10/08/2008CN201129173Y Sliding bush type pipe testing device
10/08/2008CN201129172Y Rotary digging and boring machine depth measuring apparatus
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