| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
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| 01/28/2010 | US20100018306 Method and device for determining the existence and location of stress-inducing forces on a rod |
| 01/28/2010 | US20100018305 Rotating Fluid Flow Measurement Device and Method |
| 01/28/2010 | US20100018304 In situ measurements in formation testing to determine true formation resistivity |
| 01/28/2010 | US20100018303 Permanently installed in-well fiber optic accelerometer-based sensing apparatus and associated method |
| 01/28/2010 | CA2732036A1 System and method for drilling a borehole |
| 01/28/2010 | CA2730594A1 System and method for automating exploration or production of subterranean resources |
| 01/28/2010 | CA2730554A1 System and method for detecting casing in a formation using current |
| 01/28/2010 | CA2725088A1 Method of manufacture and the use of a functional proppant for determination of subterranean fracture geometries |
| 01/27/2010 | EP2147187A2 Method and apparatus for measuring a parameter within the well with a plug |
| 01/27/2010 | CN201391318Y Combined device for measuring pressure and sampling |
| 01/27/2010 | CN201391317Y Gas detecting device of coal mine actual mining mined out space |
| 01/27/2010 | CN201391316Y Microphone for low-pressure tester of silent elastic oil well |
| 01/27/2010 | CN201391315Y Water level measuring rule of well |
| 01/27/2010 | CN201391314Y Measuring device for insert depth of proppant |
| 01/27/2010 | CN201391313Y Connecting mechanism for a low-pressure tester of a silent elastic oil well |
| 01/27/2010 | CN201391312Y Drill string and drilling fluid coupling dynamical behavior research testing table |
| 01/27/2010 | CN201391311Y Adaptive reducing backup device |
| 01/27/2010 | CN201391310Y Transforming hoop |
| 01/27/2010 | CN201391309Y Tension gauge connection fixed protective cap |
| 01/27/2010 | CN201391308Y Wellhead cable guidance abrasion-proof device |
| 01/27/2010 | CN201391296Y Framework sealing ring and anti-blocking self sealing seal section |
| 01/27/2010 | CN201391270Y Water pressure test packing device for drill holes with conventional diameter |
| 01/27/2010 | CN201391268Y Multifunctional fast-assembled type cable blowout control box |
| 01/27/2010 | CN201391263Y Fiber optic testing and injection device of thermal recovery horizontal well |
| 01/27/2010 | CN201391259Y Horizontal well logging conveying device |
| 01/27/2010 | CN201391245Y Underground logging centralizer |
| 01/27/2010 | CN201391230Y Combined type countable guider |
| 01/27/2010 | CN101636557A Measurement device in a horizontal well |
| 01/27/2010 | CN101634223A Method for testing thick oil horizontal well |
| 01/27/2010 | CN101634222A Device for measuring drilling water level |
| 01/27/2010 | CN101634221A Method for extracting angular rate by accelerometers and clinometer adopting same |
| 01/27/2010 | CN101634220A System for realizing constant current source power supply and bidirectional data transmission through shared cable |
| 01/26/2010 | US7652951 Method of generating directional low frequency acoustic signals and reflected signal detection enhancements for seismic while drilling applications |
| 01/26/2010 | US7652592 Data transmission device |
| 01/26/2010 | US7650950 Drilling system and method |
| 01/26/2010 | CA2569752C Method and conduit for transmitting signals |
| 01/26/2010 | CA2361653C Method for determining the thermal profile of a drilling fluid in a well |
| 01/21/2010 | WO2010009411A2 Hydrocarbon determination in presence of electron and chemical ionization |
| 01/21/2010 | WO2010009182A2 Cationic fluorinated polymer compositions and methods for treating hydrocarbon-bearing formations using the same |
| 01/21/2010 | WO2010009031A2 Method of ranking geomarkers and compositional allocation of wellbore effluents |
| 01/21/2010 | WO2010008661A2 Job monitoring methods and apparatus for logging-while-drilling equipment |
| 01/21/2010 | WO2009146127A3 Tool and method for evaluating fluid dynamic properties of a cement annulus surrounding a casing |
| 01/21/2010 | WO2009118684A3 Cable with reduced amount nylon for geophysical applications |
| 01/21/2010 | WO2009032416A8 Well performance modeling in a collaborative well planning environment |
| 01/21/2010 | US20100017137 Method for electromagnetically measuring physical parameters of a pipe |
| 01/21/2010 | US20100017134 Gravel pack assessment tool and methods of use |
| 01/21/2010 | US20100013664 Method and apparatus for determining position in a pipe |
| 01/21/2010 | US20100012377 System And Apparatus For Locating And Avoiding An Underground Obstacle |
| 01/21/2010 | US20100012376 Monolithic movable rotary well drilling rig |
| 01/21/2010 | US20100012316 In Situ Determination of Critical Desorption Pressures |
| 01/21/2010 | US20100011853 Contact-less sensor cartridge |
| 01/21/2010 | CA2730971A1 Cationic fluorinated polymer compositions and methods for treating hydrocarbon-bearing formations using the same |
| 01/20/2010 | EP2145210A1 Inverse-vector method for smoothing dips and azimuths |
| 01/20/2010 | CN201386558Y Seismic while drilling quality monitoring device |
| 01/20/2010 | CN201386557Y Relay transmission measurement while drilling device |
| 01/20/2010 | CN201386556Y Heat trace flowmeter |
| 01/20/2010 | CN201386555Y Electromagnetic wave measuring instrument for water holdup in oil well |
| 01/20/2010 | CN201386554Y Novel horizontal well shearing bypass |
| 01/20/2010 | CN201386552Y Device for automatically controlling grouting of drilling and workover operation |
| 01/20/2010 | CN201386509Y Drilling tool combination for relay transmission measurement while drilling device |
| 01/20/2010 | CN101629487A Stratified flow rate test instrument for CO2 stratified injection well |
| 01/20/2010 | CN100583849C Power source regulator for wireline cable system with feedback loop |
| 01/19/2010 | US7649357 Side entry leak protection for downhole tools |
| 01/19/2010 | US7647987 Multiple antenna system for horizontal directional drilling |
| 01/19/2010 | US7647824 System and method for estimating formation supercharge pressure |
| 01/19/2010 | CA2615355C Method and associated system for setting downhole control pressure |
| 01/19/2010 | CA2475425C Downhole signal communication and measurement through a metal tubular |
| 01/19/2010 | CA2452120C Relative drill bit direction measurement |
| 01/14/2010 | WO2010006302A2 "system and method for using a resistivity tool with wired drill pipe and one or more wells" |
| 01/14/2010 | WO2010006052A2 System and method for generating true depth seismic surveys |
| 01/14/2010 | WO2010006041A2 System for measuring shear stress in downhole tubulars |
| 01/14/2010 | WO2010005907A1 Method to detect casing point in a well from resistivity ahead of the bit |
| 01/14/2010 | WO2010005902A2 Method to detect formation pore pressure from resistivity measurements ahead of the bit during drilling of a well |
| 01/14/2010 | WO2010005764A2 Location of bypassed hydrocarbons |
| 01/14/2010 | WO2010005762A2 Well log normalization |
| 01/14/2010 | WO2010005319A1 Novel tracer materials |
| 01/14/2010 | WO2010004393A2 Nmr logging of miscible displacement |
| 01/14/2010 | WO2009146103A3 Control of downhole devices in a wellbore |
| 01/14/2010 | WO2009144585A3 Multiple sensors along a drillstring |
| 01/14/2010 | WO2009142868A3 Drilling wells in compartmentalized reservoirs |
| 01/14/2010 | WO2009142840A3 Methods and apparatus to form a well |
| 01/14/2010 | WO2009129240A3 Selective zonal testing using a coiled tubing deployed submersible pump |
| 01/14/2010 | WO2009126430A3 Method for determining wellbore position using seismic sources and seismic receivers |
| 01/14/2010 | WO2009050517A3 Method of and apparatus for completing a well |
| 01/14/2010 | US20100010796 Location of bypassed hydrocarbons |
| 01/14/2010 | US20100008190 Apparatus and Method for Data Transmission from a Rotating Control Device |
| 01/14/2010 | US20100008189 Methods and systems for communicating data through a pipe |
| 01/14/2010 | US20100008188 System and method for acquiring information during underground drilling operations |
| 01/14/2010 | US20100006750 Novel tracer materials |
| 01/14/2010 | US20100006338 Optimized reaming system based upon weight on tool |
| 01/14/2010 | US20100006292 Methods and Systems for Determination of Fluid Invasion in Reservoir Zones |
| 01/14/2010 | US20100006284 Downhole characterization of formation fluid as a function of temperature |
| 01/14/2010 | US20100006282 Assembly for pressure control when drilling and method to control pressure when drilling in a formation with unpredictable high formation pressure |
| 01/14/2010 | US20100006279 Intervention Tool with Operational Parameter Sensors |
| 01/14/2010 | CA2730160A1 Novel tracer materials |
| 01/14/2010 | CA2730067A1 Nmr logging of miscible displacement |
| 01/14/2010 | CA2728610A1 Well log normalization |
| 01/14/2010 | CA2728395A1 Location of bypassed hydrocarbons |
| 01/13/2010 | EP2013447B1 Method for production metering of oil wells |
| 01/13/2010 | CN201383212Y Acquiring and transmitting device for ground test and measurement data of oil and gas well |