| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
|---|
| 09/28/2010 | CA2641431C Method of utilizing flowable devices in wellbores |
| 09/28/2010 | CA2477659C Flow meter using an expanded tube section and sensitive differential pressure measurement |
| 09/23/2010 | WO2010107856A2 Relative and absolute error models for subterranean wells |
| 09/23/2010 | WO2010078389A3 Method and apparatus for increasing the efficiency of a fluorescence measurement cell |
| 09/23/2010 | US20100236777 Power systems for wireline well service using wired pipe string |
| 09/23/2010 | CA2754152A1 Relative and absolute error models for subterranean wells |
| 09/22/2010 | EP2230379A2 Multi-stage modulator |
| 09/22/2010 | EP2229504A2 Oilfield area network communication system and method |
| 09/22/2010 | CN201589611U Tri-axial inclinometer calibration console |
| 09/22/2010 | CN201588627U Power driver for slurry pulse generator |
| 09/22/2010 | CN201588626U Double-system longitudinal shock absorber |
| 09/22/2010 | CN201588625U Natural gas metering and separating device |
| 09/22/2010 | CN201588624U Movable single well metering device for oil well |
| 09/22/2010 | CN101842693A Apparatus for determining the concentration of a conductive fluid present in a fluid filled borehole |
| 09/22/2010 | CN101842601A Bore-hole jet device for formation hydraulic fracturing and horizontal well examination and a method for the operation thereof |
| 09/22/2010 | CN101840436A Logging data file storage method based on table structure |
| 09/22/2010 | CN101839132A Electromagnetic induction MWD (Measurement While Drilling) data transmission system |
| 09/22/2010 | CN101839131A Method and structure for optimizing axial fluid line in cylindrical matrix |
| 09/22/2010 | CN101839130A Gas sample acquisition and analysis device for coal mine gob |
| 09/22/2010 | CN101839129A Isotope well-to-well liquid flow propelling automatic monitor |
| 09/21/2010 | US7798246 Apparatus and method to control the rotation of a downhole drill bit |
| 09/21/2010 | US7798224 Rheology controlled heterogeneous particle placement in hydraulic fracturing |
| 09/21/2010 | US7798216 Wellbore surveying system and method |
| 09/21/2010 | US7798214 Subsurface formation monitoring system and method |
| 09/21/2010 | US7797996 Permanently installed in-well fiber optic accelerometer-based sensing apparatus and associated method |
| 09/21/2010 | CA2686400C Distance determination from a magnetically patterned target well |
| 09/21/2010 | CA2622651C Systems and methods for well data compression |
| 09/21/2010 | CA2617328C Dual channel downhole telemetry |
| 09/21/2010 | CA2565254C Apparatus for inspecting anchor boreholes |
| 09/21/2010 | CA2556937C Methods for measuring a formation supercharge pressure |
| 09/21/2010 | CA2537866C Integrated transmitter surveying while boring (swb) entrenching powering device for the continuation of a guided bore hole |
| 09/21/2010 | CA2464050C Flow control mechanism for a downhole tool |
| 09/16/2010 | WO2010105064A2 A novel configuration design of detector shielding for wireline and mwd/lwd down-hole thermal neutron porosity tools |
| 09/16/2010 | WO2010104728A2 Downhole determination of asphaltene content |
| 09/16/2010 | WO2010104716A1 A flasked pressure housing |
| 09/16/2010 | WO2010102572A1 Cable head for petroleum logging |
| 09/16/2010 | US20100230164 Compositions and methods for inhibiting lost circulation during well operation |
| 09/16/2010 | US20100230093 performance of permanently installed tubing conveyed seismic arrays using passive acoustic absorbers |
| 09/16/2010 | US20100229641 Anchor bolt and annularly grooved expansion sleeve assembly exhibiting high pull-out resistance, particularly under cracked concrete test conditions |
| 09/16/2010 | US20100229623 Downhole determination of asphaltene content |
| 09/15/2010 | CN201582473U Electromagnetic valve for wireless measurement-while-drilling system |
| 09/15/2010 | CN201581893U Automatic pressure-collecting split pressure control tester |
| 09/15/2010 | CN201581892U Special pressure sensor for petroleum drilling, crushing and well cementation |
| 09/15/2010 | CN201581891U Eccentric fracture real-time monitoring tubular column |
| 09/15/2010 | CN201581890U Remote automatic measurement and control borehole inclination measuring device |
| 09/15/2010 | CN201581889U Fully-mechanized working face bending detection device |
| 09/15/2010 | CN201581888U Oil well diagram remote measuring device |
| 09/15/2010 | CN201581887U Hydraulic control system of through casing resistivity logging instrument |
| 09/15/2010 | CN201581874U Skid-mounted water-dissolution mining technological process converting and monitoring device |
| 09/15/2010 | CN101832151A Embedding method of combination transducer for early warning and monitoring of water inrush disaster of mines |
| 09/15/2010 | CN101832132A Micro-ring identification and detection method for cement bond logging in oil well |
| 09/15/2010 | CN101832131A Surface real-time processing of downhole data |
| 09/15/2010 | CN101832130A Surface real-time processing of downhole data |
| 09/15/2010 | CN101832129A Downhole manual radioactive reservoir fluid analyzer |
| 09/15/2010 | CN101832128A Active device and method for measuring pressure of coal-bed gas |
| 09/15/2010 | CN101832127A Permanent pressure meter testing technique for coal bed gas observation well |
| 09/15/2010 | CN101832126A Small slam logging instrument |
| 09/15/2010 | CN101832125A Remotely updating device of EDIB (Electronic Data Interchange Bus) based down-hole program |
| 09/15/2010 | CN101832124A Dual laterolog equipment power transmitting control method |
| 09/15/2010 | CN101832122A Three-pressure state perforation experiment target |
| 09/15/2010 | CN101105126B Logging-while-drilling orientation measurement error compensation method based on micro-quartz angular rate sensor |
| 09/14/2010 | US7793712 Downhole tool |
| 09/14/2010 | CA2594217C Reservoir sample chain-of-custody |
| 09/14/2010 | CA2593416C Hybrid wellbore telemetry system and method |
| 09/14/2010 | CA2587973C Method and apparatus for cooling flasked instrument assemblies |
| 09/14/2010 | CA2499043C Azimuthally focused electromagnetic measurement tool |
| 09/10/2010 | WO2010102275A2 Apparatus for electrical power and/or data transfer between rotating components in a drill string |
| 09/10/2010 | WO2010102130A2 Apparatus and method for formation testing |
| 09/10/2010 | WO2010102110A2 Methods, system and computer program product for delivering well data |
| 09/10/2010 | WO2010102109A2 Early kick detection in an oil and gas well |
| 09/10/2010 | WO2010102030A2 Method and apparatus for acoustic impedance and p-wave anisotropy measurements |
| 09/10/2010 | WO2010101733A2 Tool for locating and plugging lateral wellbores |
| 09/10/2010 | WO2010101713A2 Apparatus and method for a wireless sensor to monitor barrier system integrity |
| 09/10/2010 | WO2010101548A1 Drillstring motion analysis and control |
| 09/10/2010 | WO2009142782A3 System and method for densely packing wells using magnetic ranging while drilling |
| 09/10/2010 | CA2762217A1 Tool for locating and plugging lateral wellbores |
| 09/10/2010 | CA2754483A1 Early kick detection in an oil and gas well |
| 09/10/2010 | CA2753695A1 Methods, system and computer program product for delivering well data |
| 09/10/2010 | CA2753433A1 Apparatus and method for a wireless sensor to monitor barrier system integrity |
| 09/09/2010 | US20100224411 Boring Tool Tracking Fundamentally Based on Drill String Length, Pitch and Roll |
| 09/09/2010 | US20100224409 System and method of using a saver sub in a drilling system |
| 09/09/2010 | US20100224361 Compositions and Methods for Treating a Water Blocked Well |
| 09/09/2010 | US20100224360 Apparatus, system and method for motion compensation using wired drill pipe |
| 09/09/2010 | US20100224356 Apparatus for electrical power and/or data transfer between rotating components in a drill string |
| 09/09/2010 | US20100223990 Apparatus and Method for Formation Testing |
| 09/09/2010 | US20100223989 Obtaining and evaluating downhole samples with a coring tool |
| 09/08/2010 | EP2225801A1 Purging of fiber optic conduits in subterranean wells |
| 09/08/2010 | CN201576526U Underground high-power electromagnet and underground instrument driving system |
| 09/08/2010 | CN201574750U Logging ground and downhole signal two-way transmission circuit |
| 09/08/2010 | CN201574749U Logging ground or downhole signal receiving circuit |
| 09/08/2010 | CN201574748U Convenient oil well sampler |
| 09/08/2010 | CN201574747U Weighting sheath of small diameter electronic pressure gauge used in oil field |
| 09/08/2010 | CN201574746U Layered testing pump for oilfield producing well |
| 09/08/2010 | CN201574745U CAN bus device tester |
| 09/08/2010 | CN201574707U Tube internal self-adaptive linkage telescopic mechanism |
| 09/08/2010 | CN101827998A Water sensing adaptable in-flow control device and method of use |
| 09/08/2010 | CN101827997A Electrical contact connections for wellbore tools |
| 09/08/2010 | CN101824999A Technology for measuring gas pressure of coal bed by utilizing through beds hole |
| 09/08/2010 | CN101824983A Signal transmission device |
| 09/08/2010 | CN101824982A Coal bed gas drainage effective radius measuring method |