| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
|---|
| 01/05/2011 | CN201696023U Novel leaf spring-fixing structure |
| 01/05/2011 | CN201696022U Wellhead crude oil metering device |
| 01/05/2011 | CN201696007U Oil field well station monitoring device |
| 01/05/2011 | CN201696005U Sand setting device for plug of sieve tube of oil-well pump |
| 01/05/2011 | CN201693535U Bench clamp support and workbench |
| 01/05/2011 | CN101936929A X-ray fluorescent element analysis device and mud logging unit thereof |
| 01/05/2011 | CN101936162A Method for preventing rock burst of bottom plate of layered tunnel in tectonic stress region of coal mine |
| 01/05/2011 | CN101936157A Method for detecting pore pressure of high pressure saltwater layer by using log information |
| 01/05/2011 | CN101936156A Self-expanding packer borehole simulation test device |
| 01/05/2011 | CN101936132A Reciprocating drill for mine |
| 01/05/2011 | CN101936128A Drilling machine for mines |
| 01/05/2011 | CN101936127A Mine drilling machine |
| 01/04/2011 | US7863900 Method for establishing a portion of a boring tool path |
| 01/04/2011 | US7862228 High temperature wellbore monitoring method and apparatus |
| 01/04/2011 | US7861800 Combining belief networks to generate expected outcomes |
| 01/04/2011 | CA2706861C Determination of borehole azimuth and the azimuthal dependence of borehole parameters |
| 01/04/2011 | CA2621496C Method and apparatus for transmitting sensor response data and power through a mud motor |
| 01/04/2011 | CA2594512C A method for facilitating a wellbore operation |
| 01/04/2011 | CA2561322C A drill string incorporating an acoustic telemetry system employing one or more low frequency acoustic attenuators and an associated method of transmitting data |
| 01/04/2011 | CA2539676C Well logging apparatus for obtaining azimuthally sensitive formation resistivity measurements |
| 01/04/2011 | CA2525353C Determination of borehole azimuth and the azimuthal dependence of borehole parameters |
| 01/04/2011 | CA2503268C Systems and methods for acquiring data in thermal recovery oil wells |
| 01/04/2011 | CA2465673C Bulged single-hinged scored rupture disc having a non-circular varying depth score line |
| 01/04/2011 | CA2433211C Determining dew precipitation and onset pressure in oilfield retrograde condensate |
| 01/04/2011 | CA2424514C Method and apparatus for measuring mud and formation properties downhole |
| 01/04/2011 | CA2410967C Downhole measurement apparatus and technique |
| 12/30/2010 | US20100326673 Work string controller |
| 12/30/2010 | US20100326661 Well jet device and the operation method thereof |
| 12/30/2010 | US20100326654 Monitoring downhole production flow in an oil or gas well |
| 12/30/2010 | US20100326653 Work String Controller |
| 12/30/2010 | US20100326652 Work String Controller |
| 12/30/2010 | US20100326651 Isotopic identification of production by individual formations in commingled gas wells |
| 12/29/2010 | WO2010151144A1 Apparatus and method for detecting and quantifying leakage in a pipe |
| 12/29/2010 | WO2010151143A1 Sensor unit for a logging tool and a logging tool with at least two sensor elements |
| 12/29/2010 | WO2010151136A1 Transducer assembly |
| 12/29/2010 | WO2010150000A2 Method and apparatus for monitoring fluids |
| 12/29/2010 | WO2010148628A1 Quantitative calculation method for hydrocarbon saturation of fractured reservoir |
| 12/29/2010 | CN201689292U Intelligent well simulated experiment device |
| 12/29/2010 | CN201687467U Sector sound-wave variable density logging instrument |
| 12/29/2010 | CN201687466U Active coal seam gas pressure tester |
| 12/29/2010 | CN201687465U Stopper type pressure gauge capable of measuring flow pressure at rear of eccentric filling wellhead |
| 12/29/2010 | CN201687464U Drilling gas inrush initial velocity measurement device |
| 12/29/2010 | CN201687463U Underground optical imaging measuring device |
| 12/29/2010 | CN201687462U Small fluid volume gas-liquid two-phase flowmeter |
| 12/29/2010 | CN201687461U Movable individual-well metering device with pressure release valve |
| 12/29/2010 | CN201687460U Movable single-well metering device with conical ejecting block |
| 12/29/2010 | CN201687459U Mobile single well metering device with communication module |
| 12/29/2010 | CN201687458U Movable single-well metering device with metering barrel |
| 12/29/2010 | CN201687457U Movable single-well metering device with generator |
| 12/29/2010 | CN201687456U Movable single well metering device with electronic scale |
| 12/29/2010 | CN101929973A Quantitative calculation method for hydrocarbon saturation of fractured reservoir |
| 12/29/2010 | CN101929912A Monitoring of undesirable fluid ingress into subsea control modules |
| 12/29/2010 | CN101929334A Device and method for monitoring penetration of marine petroleum pipe and pile hammering-in method |
| 12/29/2010 | CN101929333A Drill-o-graph |
| 12/29/2010 | CN101929332A Method for determining speed and buried depth of undrilled stratum by adopting long-array micrometer well |
| 12/29/2010 | CN101929326A Geothermal well layer-by-layer filter material feeding process |
| 12/29/2010 | CN101929315A Well cleanup detecting device used for oil wells |
| 12/29/2010 | CA2766802A1 Transducer assembly |
| 12/29/2010 | CA2766484A1 Sensor unit for a logging tool and a logging tool with at least two sensor elements |
| 12/28/2010 | US7860654 Simulation method and apparatus for determining subsidence in a reservoir |
| 12/28/2010 | US7859251 Apparatus detecting relative body movement |
| 12/28/2010 | US7859249 Tracking positions of personnel, vehicles, and inanimate objects |
| 12/28/2010 | US7857065 Device for selective movement of well tools and also a method of using same |
| 12/28/2010 | US7857049 System and method for operational management of a guarded probe for formation fluid sampling |
| 12/28/2010 | US7857048 Method for breaking fracturing fluids |
| 12/28/2010 | US7857047 Method of drilling and producing hydrocarbons from subsurface formations |
| 12/28/2010 | US7857046 Methods for obtaining a wellbore schematic and using same for wellbore servicing |
| 12/26/2010 | CA2707832A1 Method for modifying facies proportions during the historical fitting of a geological model |
| 12/23/2010 | WO2010148286A2 Apparatus and method for determining corrected weight-n-bit |
| 12/23/2010 | WO2010145204A1 Intelligent monitoring system for pumping rod |
| 12/23/2010 | WO2010145005A1 Air hammer optimization using acoustic telemetry |
| 12/23/2010 | WO2010144945A1 Remote installation of seabed instrument package |
| 12/23/2010 | WO2010096666A3 Method and apparatus for measuring pore pressure beyond the casing |
| 12/23/2010 | WO2010053378A3 Flow control device and flow control method |
| 12/23/2010 | US20100324825 Method and apparatus for modelling the interaction of a drill bit with the earth formation |
| 12/23/2010 | US20100319992 Apparatus and Method for Determining Corrected Weight-On-Bit |
| 12/23/2010 | US20100319991 Wall Contact Caliper Instruments for Use in a Drill String |
| 12/23/2010 | US20100319912 Focused sampling of formation fluids |
| 12/23/2010 | US20100319911 System, Method and Apparatus for Downhole Orientation Probe Sensor |
| 12/23/2010 | US20100319910 Drum Load Monitoring |
| 12/23/2010 | US20100319448 Monitoring the water tables in multi-level ground water sampling systems |
| 12/22/2010 | EP2263107A2 Method for characterizing a geological formation traversed by a borehole |
| 12/22/2010 | EP2263106A2 Automated mud slowness estimation |
| 12/22/2010 | EP1051838B1 Method to transmit downhole video up standard wireline cable using digital data compression techniques |
| 12/22/2010 | CN201682132U Butting connector for connecting rotating signal cable and stationary signal cable |
| 12/22/2010 | CN201679496U Underground liquid level monitor for gas storage well |
| 12/22/2010 | CN201679495U Universal joint type connector of downhole tester for oil field |
| 12/22/2010 | CN201679494U State monitor for oil well production |
| 12/22/2010 | CN201679493U Operating mode monitoring device for radial drilling system |
| 12/22/2010 | CN201679492U Quick connector for logging tool |
| 12/22/2010 | CN201679474U Sleeve pipe pressure blocking device |
| 12/22/2010 | CN201679460U Centralizer with eccentric mounting of left and right balance rollers |
| 12/22/2010 | CN201679458U Horizontal well sucker rod testing guiding protector |
| 12/22/2010 | CN101923173A Scintillator and detector assembly |
| 12/22/2010 | CN101922289A Temperature compensation structure of optical fiber detector for high-temperature oil well |
| 12/22/2010 | CN101922288A Intelligent monitoring sucker rod and monitoring system thereof |
| 12/21/2010 | US7854267 Methods and systems to activate downhole tools with light |
| 12/21/2010 | CA2621416C Measurement while drilling apparatus and method of using the same |
| 12/21/2010 | CA2604816C Wire-line connection system |
| 12/16/2010 | WO2010144872A1 An injection-backflow technique for measuring fracture surface area adjacent to a wellbore |