| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
|---|
| 11/20/2008 | US20080283297 Method and apparatus for introducing a geothermal probe into the earth |
| 11/20/2008 | US20080283294 Apparatus and Method for Continuous Measurement of a Physical Property of a Drilling Fluid |
| 11/20/2008 | US20080283247 Portable and modular system for extracting petroleum and generating power |
| 11/19/2008 | EP1991759A1 Tracer method and apparatus |
| 11/19/2008 | CN201152172Y Wellhead equipment pressure test pump set automatic control system |
| 11/19/2008 | CN201152171Y Drilling mud integral parameter measuring equipment |
| 11/19/2008 | CN201152170Y Pup joint capable of measuring down-hole boring tool rotation velocity and direction |
| 11/19/2008 | CN201152158Y Block-proof drift size gauge tool |
| 11/19/2008 | CN101309853A Apparatus for downhole fluids analysis utilizing micro electro mechanical systems (mems) or other sensors |
| 11/19/2008 | CN100434727C Well jet device for logging horizontal wells and the operating method thereof |
| 11/18/2008 | US7453768 High-speed, downhole, cross well measurement system |
| 11/18/2008 | US7453265 Device for monitoring of oil-water interface |
| 11/18/2008 | CA2547584C Method, system and tool for reservoir evaluation and well testing during drilling operations |
| 11/18/2008 | CA2519328C Instrumented plunger for an oil or gas well |
| 11/18/2008 | CA2511280C Kick warning system using high frequency fluid mode in a borehole |
| 11/18/2008 | CA2459007C Sucker rod dimension measurement and flaw detection system |
| 11/18/2008 | CA2458254C Downhole referencing techniques in borehole surveying |
| 11/18/2008 | CA2416053C Downhole data transmission system |
| 11/18/2008 | CA2407069C Compression set packer |
| 11/18/2008 | CA2383316C Apparatus and methods relating to downhole operations |
| 11/18/2008 | CA2314192C Downhole shock absorber |
| 11/13/2008 | WO2008137388A1 Mounting system for a fiber optic cable at a downhole tool |
| 11/13/2008 | WO2008137097A1 Method of optimizing a well path during drilling |
| 11/13/2008 | WO2008135167A2 Method and apparatus for measuring a parameter within the well with a plug |
| 11/13/2008 | WO2008118931A3 Wellbore communication, downhole module, and method for communicating |
| 11/13/2008 | WO2008109645A3 Automated oil well test classification |
| 11/13/2008 | WO2008076874A3 Wellbore power and/or data transmission devices and methods |
| 11/13/2008 | WO2008069695A3 Method of measuring of production rate for a well cluster |
| 11/13/2008 | WO2008066414A3 System for measuring the productivity of a group of wells with a single flow meter |
| 11/13/2008 | US20080277163 Method and system for wellbore communication |
| 11/13/2008 | US20080277120 Retrievable frac mandrel and well control stack to facilitate well completion, re-completion or workover and method of use |
| 11/13/2008 | DE102007008039B4 Verfahren zur Bestimmung vertikaler Variationen der Wärmeleitfähigkeit A method for determining the vertical variations of the thermal conductivity |
| 11/13/2008 | CA2686716A1 Method of optimizing a well path during drilling |
| 11/13/2008 | CA2685912A1 Mounting system for a fiber optic cable at a downhole tool |
| 11/13/2008 | CA2684911A1 Method and apparatus for measuring a parameter within the well with a plug |
| 11/12/2008 | EP1989397A1 Logging tool for hydrocarbon-producing wells |
| 11/12/2008 | EP1358396B1 Method of placing downhole tools in a wellbore |
| 11/12/2008 | CN201148866Y Drill oscillation type permeability coefficient value test data collecting device |
| 11/12/2008 | CN201148865Y Ultrasonic imaging logging tool |
| 11/12/2008 | CN201148864Y Maintaining bracket of instrument of logging while drilling |
| 11/12/2008 | CN201148863Y Depth collecting device |
| 11/12/2008 | CN201148857Y Packer |
| 11/12/2008 | CN201148849Y Oil well pressure test well washing vehicle |
| 11/12/2008 | CN101305187A System and method for optimizing down-hole fluid yield |
| 11/12/2008 | CN101305160A High pressure optical cell for a downhole optical fluid analyzer |
| 11/12/2008 | CN101305159A Method of drilling and producing hydrocarbons from subsurface formations |
| 11/12/2008 | CN101302929A Well drilling down-hole parameter vibration wave transmission device |
| 11/12/2008 | CN101302927A Metering control valve and oil well quality on-line metering device using the same |
| 11/12/2008 | CN100432372C Method for determining pressure of earth formations |
| 11/12/2008 | CN100432367C Automatic perpendicular drilling tool |
| 11/11/2008 | US7449879 Apparatus detecting relative body movement |
| 11/11/2008 | US7448448 System and method for treatment of a well |
| 11/11/2008 | US7448447 Real-time production-side monitoring and control for heat assisted fluid recovery applications |
| 11/11/2008 | US7448263 Practical methods to estimate horizontal and vertical permeabilities |
| 11/11/2008 | US7448262 Determination of correct horizontal and vertical permeabilities in a deviated well |
| 11/06/2008 | WO2008134581A2 Apparatus and methods for tubular makeup interlock |
| 11/06/2008 | WO2008134309A1 Depth correlation device for fiber optic line |
| 11/06/2008 | WO2008133633A1 Wireless telemetry repeater systems and methods |
| 11/06/2008 | WO2008132415A1 Device for protecting a geotechnical or geophysical probe |
| 11/06/2008 | WO2008116077A3 Downhole tool string component |
| 11/06/2008 | WO2007124374A3 Well tools with actuators utilizing swellable materials |
| 11/06/2008 | WO2005084332A3 Methods for measuring a formation supercharge pressure |
| 11/06/2008 | US20080272904 Signalling Method |
| 11/06/2008 | US20080271926 Mounting system for a fiber optic cable at a downhole tool |
| 11/06/2008 | US20080271887 Method and system for performing operations and for improving production in wells |
| 11/06/2008 | US20080271886 Downhole Gas Compressor |
| 11/06/2008 | CA2682353A1 Device for protecting a geotechnical or geophysical probe |
| 11/05/2008 | EP1987228A2 A method and apparatus for ion-selective discriminaion of fluids downhole |
| 11/05/2008 | CN201144696Y Drilling oscillatory type permeability coefficient value test device |
| 11/05/2008 | CN201144695Y Novel signal transmission drill string |
| 11/05/2008 | CN201144694Y Bridge type eccentric bidirectional airproof test device |
| 11/05/2008 | CN201144693Y Novel liquid level test fast joint |
| 11/05/2008 | CN201144692Y CBM wellhead quality flowmeter |
| 11/05/2008 | CN201144691Y Petroleum drilling parameters, image and fire-fighting alarm integrated apparatus |
| 11/05/2008 | CN201144690Y Casing horizontal well logging device |
| 11/05/2008 | CN201144689Y Quick change type logging winch |
| 11/05/2008 | CN201144688Y Aggregate unit of multi-arm caliper and electromagnetic flaw detector |
| 11/05/2008 | CN201144687Y Polar plate protective rack of micro-sphere focus logging tool |
| 11/05/2008 | CN201144663Y Special electrical heating plug for winter test of separate injection well |
| 11/05/2008 | CN201144650Y Multifunctional creep grinding apparatus equipped with electronic power measuring device |
| 11/05/2008 | CN201144649Y Multifunctional creep grinding apparatus equipped with automatic compensation device |
| 11/05/2008 | CN201143494Y Large power acoustic emission transducer |
| 11/05/2008 | CN101300402A Monitoring formation properties |
| 11/04/2008 | US7445048 Plunger lift apparatus that includes one or more sensors |
| 11/04/2008 | US7445043 System and method for detecting pressure disturbances in a formation while performing an operation |
| 11/04/2008 | US7445042 Signalling method and apparatus |
| 11/04/2008 | CA2423265C Method for determining pressure profiles in wellbores, flowlines and pipelines, and use of such method |
| 10/30/2008 | WO2008131218A2 System and method for crossflow detection and intervention in production wellbores |
| 10/30/2008 | WO2008131210A2 System and method for water breakthrough detection and intervention in a production well |
| 10/30/2008 | WO2008130888A1 Depth measurement by distributed sensors |
| 10/30/2008 | WO2008130852A2 Christmas tree with internally positioned flowmeter |
| 10/30/2008 | WO2008036557A3 Resistivity tools with load-bearing segmented azimuthally sensitive antennas and methods of making same |
| 10/30/2008 | WO2008030268A3 In situ recovery from hydrocarbonaceous earth formations |
| 10/30/2008 | WO2007126515A3 System and method for breach detection in petroleum wells |
| 10/30/2008 | WO2007117810A3 Enhanced hydrocarbon recovery by steam injection of oil sand formations |
| 10/30/2008 | WO2007095153A8 System and method for pump noise cancellation in mud pulse telemetry |
| 10/30/2008 | WO2007033040A3 Method for evaluating rig data |
| 10/30/2008 | WO2006105432A3 Determining viscosity of fluids from well logs using electroseismic measurements |
| 10/30/2008 | US20080267011 Intelligent efficient servo-actuator for a downhole pulser |
| 10/30/2008 | US20080266577 Apparatus for Measuring an Internal Dimension of a Well Bore |