| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
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| 03/21/2007 | CN2881096Y Layered oil extracting and testing device for oil well |
| 03/21/2007 | CN2881095Y Antifrozen blocking pressure meter bushing for oil well |
| 03/21/2007 | CN2881094Y Extraction tool |
| 03/21/2007 | CN2881054Y Wet type dust eliminating system of diving hole drilling machine |
| 03/21/2007 | CN1932530A Earth electric potential dynamic monitoring system |
| 03/21/2007 | CN1932239A Downhole data transmission apparatus and methods |
| 03/21/2007 | CN1932238A Full optical fiber digital inclinometer |
| 03/21/2007 | CN1306144C Split diameter-changing oil testing swab |
| 03/21/2007 | CA2560354A1 System, method, and apparatus for degassing tool for coal bed methane gas wells |
| 03/20/2007 | US7193526 Downhole tool |
| 03/20/2007 | US7191850 Formation dip geo-steering method |
| 03/20/2007 | US7191832 Gravel pack completion with fiber optic monitoring |
| 03/20/2007 | US7191831 Downhole formation testing tool |
| 03/20/2007 | US7191830 Annular pressure relief collar |
| 03/16/2007 | CA2558942A1 Wellbore telemetry system and method |
| 03/15/2007 | WO2007030427A2 System and method for monitoring a well by means of an optical fiber |
| 03/15/2007 | WO2006099399A3 Determination of coal bed natural gas production factors and a system to determine same |
| 03/15/2007 | WO2006037020A3 Single solenoid guide system |
| 03/15/2007 | US20070061079 Digital core workflow method using digital core image |
| 03/15/2007 | US20070057811 Downhole data transmission apparatus and methods |
| 03/15/2007 | US20070056774 Apparatus and methods for drilling a wellbore using casing |
| 03/15/2007 | US20070056771 Measurement while drilling apparatus and method of using the same |
| 03/15/2007 | US20070056746 Method and system for evaluating weight data from a service rig |
| 03/15/2007 | US20070056727 Method and system for evaluating task completion times to data |
| 03/15/2007 | US20070056364 Drill hole measuring device and rock drilling unit |
| 03/14/2007 | EP1762864A1 Borehole imaging |
| 03/14/2007 | CN2878672Y Under-well lamination controller for oil well |
| 03/14/2007 | CN2878671Y Under-well meter for pile foundation drilling aperture measuring meter |
| 03/14/2007 | CN2878670Y Intelligent depth indicating recorder for pumping operation |
| 03/14/2007 | CN2878669Y Under-well magnetic flow sensor |
| 03/14/2007 | CN2878668Y Separate six-arm micro-ball micro-electrode well radii combined logger |
| 03/14/2007 | CN2878660Y Anti-spray alarming anti-falling device for multi-functional well mouth |
| 03/14/2007 | CN2878659Y Environmental anti-spray device for oil well test |
| 03/14/2007 | CN1930920A Extracting and processing hydrocarbon-bearing formations |
| 03/14/2007 | CN1930573A Method and apparatus for chemometric estimations of fluid density, viscosity, dielectric constant, and resistivity from mechanical resonator data |
| 03/14/2007 | CN1304718C Horizontal direction boring machine and underground boring system |
| 03/13/2007 | US7190280 Method and apparatus for transmitting and receiving data to and from a downhole tool |
| 03/13/2007 | US7189033 Apparatus and methods for thrust sensing valves |
| 03/13/2007 | US7188672 Well string assembly |
| 03/13/2007 | US7188671 System, method, and apparatus for survey tool having roller knuckle joints for use in highly deviated horizontal wells |
| 03/13/2007 | CA2394076C Technique for signal detection using adaptive filtering in mud pulse telemetry |
| 03/13/2007 | CA2295466C Lateral well tie-back method and apparatus |
| 03/12/2007 | CA2559119A1 Method for determining properties of earth formations using dielectric permittivity measurements |
| 03/12/2007 | CA2556655A1 Borehole imaging |
| 03/08/2007 | WO2007027627A1 A method for gravel or frac pacping in a wellbore and for monitoring the packing process |
| 03/08/2007 | WO2007026111A1 Method and apparatus for measuring velocity of tubulars |
| 03/08/2007 | WO2006110391A3 System and methods of communicating over noisy communication channels |
| 03/08/2007 | US20070052551 Formation evaluation system and method |
| 03/08/2007 | US20070051512 Magnetic Locator Systems and Methods of Use at a Well Site |
| 03/08/2007 | US20070051511 System and method for breach detection in petroleum wells |
| 03/08/2007 | CA2614425A1 A method for gravel or frac packing in a wellbore and for monitoring the packing process |
| 03/07/2007 | EP1759226A1 Method for solving implicit reservoir simulation matrix equation |
| 03/07/2007 | EP1759087A1 A method of filtering pump noise |
| 03/07/2007 | CN2876330Y Directional self floating pallet shock absorber |
| 03/07/2007 | CN2876329Y Oil gas separator |
| 03/06/2007 | US7188058 Method of load and failure prediction of downhole liners and wellbores |
| 03/06/2007 | US7187784 Borescope for drilled shaft inspection |
| 03/06/2007 | US7187297 Methods for sealing openings in tubulars |
| 03/06/2007 | US7186971 Flowshot technique |
| 03/06/2007 | US7185715 Apparatus and method of controlling motion and vibration of an NMR sensor in a drilling bha |
| 03/06/2007 | US7185700 Separable plug for use with a wellbore tool |
| 03/06/2007 | US7185536 Pressure monitoring technique for downhole tools |
| 03/05/2007 | CA2558336A1 Method for updating a geological reservoir model using dynamic data |
| 03/01/2007 | WO2007024779A1 System for tracking and maintaining an on-grade horizontal borehole |
| 03/01/2007 | WO2007024234A1 Improved hydrocarbon production methods |
| 03/01/2007 | WO2007023341A2 Method and apparatus for transmitting or receiving information between a downhole equipment and surface |
| 03/01/2007 | WO2006120366A8 Methods for analysis of pressure response in underground formations |
| 03/01/2007 | US20070047867 Downhole fiber optic acoustic sand detector |
| 03/01/2007 | US20070045583 Fluid erosion protection washer for rotating shaft in MWD tool |
| 03/01/2007 | US20070044960 Methods, systems and apparatus for coiled tubing testing |
| 03/01/2007 | US20070044959 Apparatus and method for evaluating a formation |
| 03/01/2007 | US20070044672 Methods and systems to activate downhole tools with light |
| 03/01/2007 | US20070044536 System For Tracking And Maintaining An On-Grade Horizontal Borehole |
| 02/28/2007 | EP1756527A2 Direct measurement of brillouin frequency in distributed optical sensing systems |
| 02/28/2007 | CN2874434Y Mine pressure and temperature detector |
| 02/28/2007 | CN2874022Y Full automatic multiple well type oil well metering device |
| 02/28/2007 | CN2874021Y Long pipe sand filling model for physical analogue test |
| 02/28/2007 | CN2874020Y Vehicle carried oil well metering device |
| 02/28/2007 | CN2874019Y High temperature measuring tube while drilling |
| 02/28/2007 | CN1920253A Formation evaluation system and method |
| 02/28/2007 | CN1920246A System and method for completing a subterranean well |
| 02/27/2007 | US7182154 Directional borehole drilling system and method |
| 02/27/2007 | US7182151 Apparatus and method for horizontal drilling |
| 02/27/2007 | US7182141 Expander tool for downhole use |
| 02/27/2007 | US7182139 System and method for controlling downhole tools |
| 02/27/2007 | US7182138 Reservoir communication by creating a local underbalance and using treatment fluid |
| 02/27/2007 | US7182134 Intelligent well system and method |
| 02/27/2007 | US7182133 Elevator sensor |
| 02/27/2007 | US7181960 Determination of correct horizontal and vertical permeabilities in a deviated well |
| 02/22/2007 | WO2007022186A1 Downhole navigation and detection system |
| 02/22/2007 | WO2006133243B1 Method and apparatus for collecting drill bit performance data |
| 02/22/2007 | WO2005113935A3 Methods and apparatus for using formation property data |
| 02/22/2007 | US20070041501 Apparatus and a method for visualizing target objects in a fluid-carrying pipe |
| 02/22/2007 | US20070040557 Device for monitoring of oil-water interface |
| 02/22/2007 | US20070039756 Sonde housing |
| 02/22/2007 | US20070039730 Apparatus and method for aquiring information while drilling |
| 02/22/2007 | CA2618172A1 Method and apparatus for enhancing formation resistivity images obtained with downhole galvanic tools |
| 02/21/2007 | EP1753934A1 System and methods using fiber optics in coiled tubing |
| 02/21/2007 | EP1354118B1 Backreamer |
| 02/21/2007 | CN2871841Y Stratified oil-extraction tester |