| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
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| 09/20/2007 | US20070215345 Method And Apparatus For Hydraulic Fracturing And Monitoring |
| 09/20/2007 | US20070214878 Use of deuterium oxide-depleted water as a tracer in downhole and core analysis applications |
| 09/20/2007 | CA2645351A1 Method and apparatus for hydraulic fracturing and monitoring |
| 09/20/2007 | CA2582123A1 Data compression method for use in downhole applications |
| 09/19/2007 | EP1597455B1 Radially adjustable downhole devices & methods for the same |
| 09/19/2007 | EP1301687B1 Borehole inspection video camera |
| 09/19/2007 | CN200950077Y Double-chamber oil separator |
| 09/19/2007 | CN200949465Y Downhole pressure gage with automatic device for cut-off fluid inlet hole |
| 09/19/2007 | CN200949464Y Multiple core pressure bearing plate |
| 09/19/2007 | CN200949463Y Explosion-proof dynamic fluid level depth and casing pressure automatic testing system |
| 09/19/2007 | CN200949462Y Compound logging instrument with lightning protection system |
| 09/19/2007 | CN200949461Y Three-wing rotary slurry pulsator head |
| 09/19/2007 | CN101037940A System for detecting drilling fluids outlet flow |
| 09/19/2007 | CN101037939A Double move-degree cam wheel mechanical wave message-reporting device |
| 09/18/2007 | US7270185 Drilling system and method for controlling equivalent circulating density during drilling of wellbores |
| 09/18/2007 | US7270179 Method for stimulation of liquid flow in a well |
| 09/18/2007 | US7270177 Instrumented packer |
| 09/18/2007 | CA2403980C Method and apparatus for flow measurement |
| 09/18/2007 | CA2393504C Flow control in a wellbore |
| 09/18/2007 | CA2378329C Data transmission in pipeline systems |
| 09/13/2007 | WO2007103245A2 Automated steerable hole enlargement drilling device and methods |
| 09/13/2007 | WO2007102821A1 Well tool having magnetically coupled position sensor |
| 09/13/2007 | WO2007102023A1 Tracer method and apparatus |
| 09/13/2007 | WO2007101500A1 Device and method for producing soil structures in the ground |
| 09/13/2007 | WO2007054800A3 High pressure optical cell for a downhole optical fluid analyzer |
| 09/13/2007 | WO2007041823A8 Method and system for optimizing downhole fluid production |
| 09/13/2007 | WO2006058006A3 Identification of the channel frequency response using chirps and stepped frequencies |
| 09/13/2007 | US20070213963 System And Method For Determining Flow Rates In A Well |
| 09/13/2007 | US20070209799 In situ recovery from a hydrocarbon containing formation |
| 09/13/2007 | DE102006002838B3 Jet spray column producing and measuring device, has measuring device measuring diameter of jet spray column and partially integrated in drill and jet rods, where drill and jet rods produce bore hole |
| 09/13/2007 | CA2644442A1 Automated steerable hole enlargement drilling device and methods |
| 09/13/2007 | CA2637102A1 Device and method for producing soil structures in the ground |
| 09/13/2007 | CA2636988A1 Tracer method and apparatus |
| 09/12/2007 | EP1831724A1 Downhole communication |
| 09/12/2007 | EP1831502A2 Centralizer-based survey and navigation device and method |
| 09/12/2007 | CN200946506Y Mounting structure of pressure sensor |
| 09/12/2007 | CN200946505Y Temperature-measuring, pressure-measuring tubing for oil well |
| 09/12/2007 | CN200946504Y Shock-absorbing adaptor |
| 09/12/2007 | CN200946503Y Experimental perforating target for emulating downhole perforating condition |
| 09/12/2007 | CN200946502Y Rod type monitoring indicator |
| 09/12/2007 | CN200946501Y 油井计量装置 Oil metering device |
| 09/12/2007 | CN200946500Y Flow gauge built-up type downhole measuring and regulation instrument |
| 09/12/2007 | CN200946499Y On-line continuous detection instrument for length for lowering or lifting oil pipe for oil field dowhole operation |
| 09/12/2007 | CN101033687A Extra-low frequency or ultra-low frequency electromagnetic wave while-drilling two-ways remote controlling sensing system |
| 09/12/2007 | CN101033686A Device for monitoring start-stop of pumping unit of well and collecting current of up-down stroke current and stroke |
| 09/11/2007 | US7267184 Modular housing for a rotary steerable tool |
| 09/11/2007 | CA2419687C Method and system for avoiding damage to behind-casing structures |
| 09/07/2007 | WO2007081577A3 Method to detect low salinity injection water encroachment into oil formations |
| 09/07/2007 | WO2007041516A3 Method and apparatus for formation evaluation and borehole size determination |
| 09/06/2007 | US20070206440 Flexible Piezoelectric for Downhole Sensing, Actuation and Health Monitoring |
| 09/06/2007 | US20070205000 Instrumentation for a downhole deployment valve |
| 09/05/2007 | EP1830035A1 Method for determining the position of a movable device in an underground borehole |
| 09/05/2007 | EP1828540A1 Gyroscopically-oriented survey tool |
| 09/05/2007 | EP1828539A1 Heating and cooling electrical components in a downhole operation |
| 09/05/2007 | EP1149312B1 High-power well logging method and apparatus |
| 09/05/2007 | CN200943494Y Pressure temperature balance device for logging instrument |
| 09/05/2007 | CN200943493Y Quick reaction temperature sensor for logging in oil production |
| 09/05/2007 | CN200943492Y Protecting cap and wire for pressure test |
| 09/05/2007 | CN200943491Y Intelligent locking type oil well pressure-testing sampler |
| 09/05/2007 | CN200943490Y Variable sealer |
| 09/05/2007 | CN200943489Y Optical fiber grating sensor for high temperature and high pressure fluid checking |
| 09/05/2007 | CN200943488Y Storage type continuous metering downhole meter for pressure and temperature |
| 09/05/2007 | CN200943487Y Strain type microvoice sensor |
| 09/05/2007 | CN200943486Y Driftmeter checking platform |
| 09/05/2007 | CN200943485Y Multiple well thick oil metering control system |
| 09/05/2007 | CN200943484Y Electrified short adapter of storage type three parameters instrument for downhole test |
| 09/05/2007 | CN200943483Y Cable decontamination device for oil well testing |
| 09/05/2007 | CN200943482Y Measuring and control device for swab operation |
| 09/05/2007 | CN200943480Y Compound injection device |
| 09/05/2007 | CN101029936A Method for logging bearing reflective sound wave |
| 09/05/2007 | CN101029567A Determination of radiant isotope radial position in well by energy-level method |
| 09/05/2007 | CN101029566A Reciprocating multi-testing arm well diameter tester |
| 09/05/2007 | CN101029565A Method for logging open-hole direction sound wave |
| 09/05/2007 | CN101029564A Method for continuouslly monitoring gas well-boring state under well |
| 09/04/2007 | US7266456 Method for management of multiple wells in a reservoir |
| 09/04/2007 | US7264057 Subsea intervention |
| 09/04/2007 | US7264050 Method and apparatus for controlling wellbore equipment |
| 09/04/2007 | US7263881 Single probe downhole sampling apparatus and method |
| 09/04/2007 | US7263880 Method for measuring formation properties with a time-limited formation test |
| 09/04/2007 | US7263836 Vortex tube cooling system |
| 08/30/2007 | WO2007098312A2 Single point and fiber optic temperature measurement for correction of a gas column weight in a well |
| 08/30/2007 | WO2007098221A2 A method and apparatus for ion-selective discriminaion of fluids downhole |
| 08/30/2007 | WO2007096567A1 Method and device for determining the location of a rod fixing point |
| 08/30/2007 | WO2007075756A3 Method and apparatus for investigating a borehole with a caliper |
| 08/30/2007 | US20070203651 Magnetic measurements while rotating |
| 08/30/2007 | US20070203639 Method For Determining A Track Of A Geographical Trajectory |
| 08/30/2007 | US20070199699 Enhanced Hydrocarbon Recovery By Vaporizing Solvents in Oil Sand Formations |
| 08/30/2007 | US20070199698 Enhanced Hydrocarbon Recovery By Steam Injection of Oil Sand Formations |
| 08/30/2007 | US20070199697 Enhanced hydrocarbon recovery by steam injection of oil sand formations |
| 08/30/2007 | US20070199696 Real-Time Production-Side Monitoring and Control for Heat Assisted Fluid Recovery Applications |
| 08/30/2007 | US20070199695 Hydraulic Fracture Initiation and Propagation Control in Unconsolidated and Weakly Cemented Sediments |
| 08/30/2007 | CA2643372A1 A method and apparatus for ion-selective discrimination of fluids downhole |
| 08/29/2007 | EP1825103A1 Sonde deployment |
| 08/29/2007 | CN200941069Y 压力传感器 Pressure sensors |
| 08/29/2007 | CN200940483Y Test and checking box for microball focus logging instrument |
| 08/29/2007 | CN200940482Y Downhole pressure detector |
| 08/29/2007 | CN200940481Y Radial flexible anti-shock structure of skeleton roller |
| 08/29/2007 | CN200940480Y Oil well depth and rope cable pull force winch metering device |
| 08/29/2007 | CN200940479Y Bypass seal module for side drilling horizontal well |
| 08/29/2007 | CN200940478Y Continuous oil meter of oil field metering station |