| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
|---|
| 08/27/2009 | WO2009103971A2 Monitoring downhole production flow in an oil or gas well |
| 08/27/2009 | WO2009103155A1 Artificial lift structures |
| 08/27/2009 | WO2008087282A3 Measurement device in a horizontal well |
| 08/27/2009 | US20090216456 Analyzing dynamic performance of reservoir development system based on thermal transient data |
| 08/27/2009 | US20090216455 Distributed sensors for dynamics modeling |
| 08/27/2009 | US20090212777 Multi-Frequency Boring Tool Locating System and Method |
| 08/27/2009 | US20090211759 Methods and Devices for Treating Multiple-Interval Well Bores |
| 08/27/2009 | US20090211754 WirelessTag Tracer Method and Apparatus |
| 08/27/2009 | US20090211752 Method and apparatus for sampling formation fluids |
| 08/27/2009 | CA2716512A1 Distributed sensors for dynamics modeling |
| 08/27/2009 | CA2716233A1 Downhole measurement while drilling system and method |
| 08/27/2009 | CA2655161A1 Analyzing dynamic performance of reservoir development system based on thermal transient data |
| 08/26/2009 | CN201297171Y Casing falling materials detecting device |
| 08/26/2009 | CN201297170Y Gas/water separating pressure measuring apparatus |
| 08/26/2009 | CN201297169Y Universal oil-filled type high-insulation bridle |
| 08/26/2009 | CN201297168Y A petroleum well logging field ground system adaptive signal processing circuit |
| 08/26/2009 | CN201297167Y Ultrasonic multi-phase flow-rate tester |
| 08/26/2009 | CN201297166Y Movable multifunctional hydraulic test system |
| 08/26/2009 | CN201297165Y Cased well data acquisition imaging ground system |
| 08/26/2009 | CN101517191A Method of and system for determining the free point in a drill pipe |
| 08/26/2009 | CN101515039A Underground power supply and signal transmission system |
| 08/26/2009 | CN101514628A Underground pressure real-time measuring and correcting method |
| 08/26/2009 | CN101514627A Remote monitoring system for oil well pressure by capillary steel pipes |
| 08/26/2009 | CN101514626A Dotting type clinometer |
| 08/26/2009 | CN101514625A Method for detecting sand production rate in the process of thick oil exploitation in oil field and device |
| 08/26/2009 | CN101514624A Embedded oilwell parameter real-time acquisition system |
| 08/26/2009 | CN101514623A Production and installation method of perforation simulation target device for laboratory |
| 08/26/2009 | CN100532783C Stratum pressure recognition method by abnormal fluid immersing into well bore |
| 08/26/2009 | CN100532780C Drilling system and method |
| 08/25/2009 | US7578359 Downhole acoustic source |
| 08/25/2009 | CA2502177C Subsurface electromagnetic measurements using cross-magnetic dipoles |
| 08/25/2009 | CA2465926C A traction apparatus |
| 08/25/2009 | CA2435089C Measuring the in situ static formation temperature |
| 08/20/2009 | WO2009103059A2 Real time misalignment correction of inclination and azimuth measurements |
| 08/20/2009 | WO2009103058A2 Down hole mud sound speed measure by using acoustic sensors with differentiated standoff |
| 08/20/2009 | WO2009102735A2 Downhole washout detection system and method |
| 08/20/2009 | WO2009102554A1 Method and apparatus to measure features in a conduit |
| 08/20/2009 | WO2009102526A2 Methods for the identification of bubble point pressure |
| 08/20/2009 | WO2009102218A2 Method and device for position control of a working organ of a down-hole actuator |
| 08/20/2009 | WO2009101289A2 Determining a heat profile of the drilling fluid in a well during the course of drilling |
| 08/20/2009 | WO2009065579A3 Sensor deployment |
| 08/20/2009 | US20090205869 Method and system of monitoring rotational time of rotatable equipment |
| 08/20/2009 | US20090205867 Real Time Misalignment Correction of Inclination and Azimuth Measurements |
| 08/20/2009 | US20090205822 Downhole Local Mud Weight Measurement Near Bit |
| 08/20/2009 | US20090205821 Method and apparatus to treat well stimulation fluids In-Situ |
| 08/20/2009 | US20090205820 Systems and methods for monitored drilling |
| 08/20/2009 | US20090205819 Well Modeling Associated With Extraction of Hydrocarbons From Subsurface Formations |
| 08/20/2009 | US20090205815 Downhole tool for measuring a fluid flow rate therethrough and a well completion incorporating same |
| 08/20/2009 | DE102007015727B4 Verfahren und Vorrichtung zum Kalibrieren von Untertagewerkzeugen bezüglich Drift Method and apparatus for calibration of downhole tools with respect to drift |
| 08/20/2009 | CA2714652A1 Downhole washout detection system and method |
| 08/19/2009 | EP2090742A1 Methods and systems to estimate wellbore events |
| 08/19/2009 | CN201292847Y High-fidelity well drilling strata dropping simulating device |
| 08/19/2009 | CN201292846Y Oil gas well trace overflow real time monitoring device |
| 08/19/2009 | CN201292845Y Integration pressure sensor |
| 08/19/2009 | CN201292844Y Under-well pressure temperature parameter storage type measuring device |
| 08/19/2009 | CN201292843Y Dropping and fetching downhole pressure measuring unit |
| 08/19/2009 | CN201292842Y Logging instrument winch sensor |
| 08/19/2009 | CN201292841Y Waterproof type double-core photoelectric winch sensor |
| 08/19/2009 | CN201292840Y Assembly for co-operating perforation and formation test |
| 08/19/2009 | CN201292839Y Integration annular space test instrument |
| 08/19/2009 | CN201292838Y Pipe column state detection device |
| 08/19/2009 | CN201292837Y Three parameter measuring device air drilling well feeding gas |
| 08/19/2009 | CN201292836Y Exploratory well oil-testing contimuous metering apparatus |
| 08/19/2009 | CN201292835Y Single-driving and double-receiving four-arm well diameter, microsphere and micro-electrode eccentering device |
| 08/19/2009 | CN201292834Y Riser monitoring system based on underwater sound |
| 08/19/2009 | CN201292822Y High-pressure well washing system device for injection well |
| 08/19/2009 | CN101509982A Core electrofiltration potential measuring gripper |
| 08/19/2009 | CN101509372A Jack well power display instrument |
| 08/19/2009 | CN101509371A Petroleum borehole log bridle |
| 08/19/2009 | CN101509370A Digital casing joint magnetic positioning logging tool |
| 08/19/2009 | CN101509369A Horizontal well thruster raising tractor for measuring under well gravity force |
| 08/19/2009 | CN101509367A Oil reservoir development simulation system, upper-coated pressure system and data processing method thereof |
| 08/19/2009 | CN101509351A Non-damage drilling head |
| 08/18/2009 | US7577528 System and method for pump noise cancellation in mud pulse telemetry |
| 08/18/2009 | US7576543 Apparatus and method for resistivity measurements during rotational drilling |
| 08/18/2009 | US7575681 Microfluidic separator |
| 08/18/2009 | US7575059 Sonde deployment |
| 08/18/2009 | US7575053 Low temperature monitoring system for subsurface barriers |
| 08/18/2009 | US7574907 Apparatus and method for fluid flow measurement with sensor shielding |
| 08/18/2009 | CA2633904C Battery assembly for a downhole telemetry system |
| 08/18/2009 | CA2407347C Apparatus and method for transmitting information to and communicating with a downhole device |
| 08/14/2009 | CA2653826A1 Methods of retrieving data from a pipe conveyed well logging assembly |
| 08/14/2009 | CA2653814A1 Carrier assembly for a pipe conveyed well logging assembly |
| 08/14/2009 | CA2653583A1 Latchable carrier assembly for pipe conveyed well logging |
| 08/13/2009 | WO2009099930A1 Method and apparatus to facilitate formation sampling |
| 08/13/2009 | WO2009099333A1 System for spatially monitoring a borehole in real-time |
| 08/13/2009 | WO2009099332A1 Data communication link |
| 08/13/2009 | WO2009098512A2 Apparatus and method for controlling the flow of downhole fluids |
| 08/13/2009 | WO2009067373A3 Generating and updating true vertical depth indexed data and log in real time data acquisition |
| 08/13/2009 | WO2009060411A3 Hydrocarbon monitoring cable |
| 08/13/2009 | WO2009029359A3 Tool face sensor method |
| 08/13/2009 | US20090204327 Method For Determining Physical Properties of Structures |
| 08/13/2009 | US20090201025 Magnetization of Target Well Casing String Tubulars for Enhanced Passive Ranging |
| 08/13/2009 | US20090200078 Method of drilling a well at or under balance using a electrical submersible pump |
| 08/13/2009 | US20090200033 Compositions and methods for gas well treatment |
| 08/13/2009 | US20090200021 Perforation method and apparatus |
| 08/13/2009 | US20090200020 Methods and apparatus for optimizing well production |
| 08/13/2009 | US20090200016 Method and apparatus to facilitate formation sampling |
| 08/13/2009 | US20090199419 Casing or Work String Orientation Indicating Apparatus and Methods |
| 08/13/2009 | CA2714501A1 Method and apparatus to facilitate formation sampling |