| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
|---|
| 01/13/2010 | CN201381854Y Borehole spherical joint gravity thruster for horizontal wellbore logging |
| 01/13/2010 | CN201381853Y Contactless electromagnetic hole diameter sensor |
| 01/13/2010 | CN201381852Y Measuring device for temperature in underground coal gasification drill holes |
| 01/13/2010 | CN201381851Y Water injection well blockage leakage testing device |
| 01/13/2010 | CN201381850Y Puncture-proof anti-lock tray |
| 01/13/2010 | CN201381849Y Polar plate of logging instrument |
| 01/13/2010 | CN201381848Y Sealing structure for polar plate of logging instrument |
| 01/13/2010 | CN201381847Y Pressure and temperature measuring device during perforation and compression fracture |
| 01/13/2010 | CN201381846Y Screw pump well dynamic liquid level monitoring device |
| 01/13/2010 | CN101627176A Em-guided drilling relative to an existing borehole |
| 01/13/2010 | CN101624908A Method for detecting working condition of pumping well |
| 01/13/2010 | CN101624907A Underground oil-water-gas mixed phase flow measuring device |
| 01/12/2010 | US7646945 Structural member bend radius and shape sensor and measurement apparatus |
| 01/12/2010 | US7646480 Borehole imaging |
| 01/12/2010 | US7644967 Handling tool for radioactive sources of logging while drilling devices |
| 01/12/2010 | US7644760 Self contained temperature sensor for borehole systems |
| 01/12/2010 | US7644757 Fixed-point packoff element with primary seal test capability |
| 01/12/2010 | CA2503399C Computer controlled downhole tools for production well control |
| 01/07/2010 | WO2010003080A2 Method for estimating the probability of collision between wells |
| 01/07/2010 | WO2010002791A2 Forward models for gamma ray measurement analysis of subterranean formations |
| 01/07/2010 | WO2010002672A1 Acoustically measuring annulus probe depth |
| 01/07/2010 | WO2010002601A2 Well log correlation |
| 01/07/2010 | WO2010002458A1 Gravel pack assessment tool and methods of use |
| 01/07/2010 | WO2010002270A2 Trigger device for activating an action |
| 01/07/2010 | WO2010001237A2 Transducer assemblies for downhole tools |
| 01/07/2010 | WO2009129216A3 Real time formation pressure test and pressure integrity |
| 01/07/2010 | WO2009103971A3 Monitoring downhole production flow in an oil or gas well |
| 01/07/2010 | WO2009102526A4 Methods for the identification of bubble point pressure |
| 01/07/2010 | US20100000792 Method to detect coring point from resistivity measurements |
| 01/07/2010 | US20100000730 Acoustically Measuring Annulus Probe Depth |
| 01/07/2010 | US20100000729 Method to detect casing point in a well from resistivity ahead of the bit |
| 01/07/2010 | DE102008026456A1 Bohrkopf Wellhead |
| 01/07/2010 | CA2728403A1 Well log correlation |
| 01/06/2010 | EP2140108A2 Wireless logging of fluid filled boreholes |
| 01/06/2010 | EP1974121B1 Method for monitoring fluid properties |
| 01/06/2010 | CN201378044Y Horizontal displacement monitor |
| 01/06/2010 | CN201377322Y Wireless impulsator while drilling |
| 01/06/2010 | CN201377321Y Temperature-setting control system of steam channeling well |
| 01/06/2010 | CN201377320Y Dedicated casing valve for oil well liquid level test |
| 01/06/2010 | CN201377319Y Oil well depth measuring device |
| 01/06/2010 | CN201377318Y Deoscillator of wireless declinator while drilling |
| 01/06/2010 | CN201377317Y Data acquisition, recording and warning system for offshore oil drilling platform |
| 01/05/2010 | US7640979 System for well logging |
| 01/05/2010 | CA2543128C Shoulder bed effects removal |
| 01/05/2010 | CA2466921C Semi-passive two way borehole communication apparatus and method |
| 12/31/2009 | US20090326826 Method and apparatus for fluid migration profiling |
| 12/31/2009 | US20090321072 Methods and apparatus of downhole fluids analysis |
| 12/31/2009 | US20090321071 Controlling and assessing pressure conditions during treatment of tar sands formations |
| 12/31/2009 | US20090320584 Rotary drill bits and systems for inspecting rotary drill bits |
| 12/30/2009 | WO2009158189A2 Detecting a structure in a well |
| 12/30/2009 | WO2009158160A2 Method for estimating formation permeability using time lapse measurements |
| 12/30/2009 | WO2009157837A1 Method and device for core drilling |
| 12/30/2009 | WO2009157812A1 Well jet device for logging and developing horizontal wells with abnormally low formation pressure |
| 12/30/2009 | WO2009156957A2 Use of hydrophobic material |
| 12/30/2009 | WO2009156552A1 Drilling tool and method for widening and simultaneously monitoring the diameter of wells and the properties of the fluid |
| 12/30/2009 | WO2009126761A3 Providing an expandable sealing element having a slot to receive a sensor array |
| 12/30/2009 | WO2009126663A3 Oil recovery by sequential waterflooding with oil reinjection and oil relocation |
| 12/30/2009 | WO2009002591A3 Method and apparatus to quantify fluid sample quality |
| 12/30/2009 | CN201372793Y X-Y caliper logging instrument |
| 12/30/2009 | CN201372792Y Instrument for measuring temperature and pressure while drilling in drilling well |
| 12/30/2009 | CN201372791Y Pumping unit wellhead data acquisition unit |
| 12/30/2009 | CN201372790Y Oil well three-phase metering device |
| 12/30/2009 | CN201372788Y Acidproof sand blender vehicle |
| 12/30/2009 | CN201372782Y High-temperature and high-pressure laboratory perforating simulation gun |
| 12/30/2009 | CN201372769Y Back pressure valve with pressure sensor |
| 12/30/2009 | CN201372727Y Guide bit for horizontal directional drilling pipe-laying drilling machine |
| 12/30/2009 | CA2727346A1 Well jet device for logging and developing horizontal wells with abnormally low formation pressure |
| 12/30/2009 | CA2725758A1 Method and device for core drilling |
| 12/30/2009 | CA2638405A1 Method and apparatus for on-site drilling cuttings analysis |
| 12/29/2009 | US7640133 Method, apparatus and system for characterizing two phase fluid flow in an injection well |
| 12/29/2009 | US7637318 Pressure communication assembly external to casing with connectivity to pressure source |
| 12/29/2009 | US7637151 Enhanced downhole fluid analysis |
| 12/29/2009 | CA2534848C Hydraulically actuated control system for use in a subterranean well |
| 12/29/2009 | CA2453038C Well drilling bit |
| 12/29/2009 | CA2440178C Logging system for use in a wellbore |
| 12/25/2009 | CA2669634A1 Method and apparatus for deploying a plurality of seismic devices into a borehole and method thereof |
| 12/25/2009 | CA2636564A1 In-drilling alignment |
| 12/24/2009 | US20090316528 Job monitoring methods and apparatus for logging-while-drilling equipment |
| 12/24/2009 | US20090314546 In-drilling alignment |
| 12/24/2009 | US20090314491 Motion detector |
| 12/24/2009 | US20090314490 Valuing future well test under uncertainty |
| 12/24/2009 | US20090314489 Acoustic imaging while cutting |
| 12/24/2009 | US20090314077 Downhole sampling apparatus and method for using same |
| 12/23/2009 | WO2009155331A1 System, program product and related methods for estimating and managing crude gravity in real-time |
| 12/23/2009 | WO2009155316A2 System, program product, and related methods for estimating and managing crude gravity in flowlines in real-time |
| 12/23/2009 | WO2009154501A1 Method and device for noncontact data exchange and charging of accumulator batteries of self-contained logging tools |
| 12/23/2009 | WO2009154500A1 Method for optimizing reservoir production analysis |
| 12/23/2009 | WO2009154499A1 A system for testing well cluster productivity |
| 12/23/2009 | WO2009153552A1 Flow line electric impedance generation |
| 12/23/2009 | WO2009153551A1 Control of sub surface safety valves |
| 12/23/2009 | WO2009129027A3 Downlink while pumps are off |
| 12/23/2009 | WO2009117591A3 Method and apparatus for eliminating drill effect in pulse induction measurements |
| 12/23/2009 | WO2009117470A3 Downhole fluid characterization based on changes in acoustic properties |
| 12/23/2009 | WO2009117427A3 Autonomous downhole control methods and devices |
| 12/23/2009 | EP2134922A1 Determination of downhole pressure while pumping |
| 12/23/2009 | CN201367903Y Segmented bond tool |
| 12/23/2009 | CN201367902Y Centralizer of wireless MWD inclinometer |
| 12/23/2009 | CN201367901Y Fishing head of wireless MWD inclinometer |
| 12/23/2009 | CN201367900Y Combined structure of case body of displacement transmitter for oil well indicator diagram test and support thereof |
| 12/23/2009 | CN201367899Y Pull/pressure logging instrument |