| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
|---|
| 02/16/2005 | CN1580487A Layer testing technology and apparatus for loose sand gas-field gas-production well oil-casing |
| 02/15/2005 | US6856255 Electromagnetic power and communication link particularly adapted for drill collar mounted sensor systems |
| 02/15/2005 | US6856135 Boring tool tracking/guiding system and method with unconstrained target location geometry |
| 02/15/2005 | US6854535 Bore location system and method of calibration |
| 02/15/2005 | US6854192 Surveying of boreholes |
| 02/15/2005 | CA2209553C Survey apparatus and methods for directional wellbore wireline surveying |
| 02/14/2005 | CA2477509A1 Apparatus and method for acoustic position logging ahead-of-the-bit |
| 02/13/2005 | CA2477468A1 Methods of generating directional lf acoustic signals and reflected signal detection enhancements for swd applications |
| 02/10/2005 | WO2005012688A1 Method and system for accessing subterranean deposits from the surface and tools therefor |
| 02/10/2005 | WO2004104373B1 Wireless well communication system and method for using the same |
| 02/10/2005 | US20050030198 Magnetic signalling in pipelines |
| 02/10/2005 | US20050030036 Side entry leak protection for sondes |
| 02/10/2005 | US20050029017 Well string assembly |
| 02/10/2005 | US20050028972 Inflation tool with real-time temperature and pressure probes |
| 02/10/2005 | US20050028608 Fluid flow measuring device and method of manufacturing thereof |
| 02/10/2005 | US20050028522 Magnetorheological fluid controlled mud pulser |
| 02/10/2005 | CA2783273A1 Geosteering detectors for boring-type continuous miners |
| 02/09/2005 | EP1505411A2 Method and apparatus for LWD shear velocity measurement |
| 02/09/2005 | EP1505252A1 Multimode acoustic imaging in cased wells |
| 02/09/2005 | CN2677613Y Scaler for internal wall of eccentric testing working cylinder |
| 02/09/2005 | CN2677612Y Evaluation surveying device for delay well cementation analogue cenmentation quality |
| 02/09/2005 | CN2677611Y Testing pulley of preventing wire out groove type |
| 02/09/2005 | CN1576513A While drilling system and method |
| 02/08/2005 | US6851491 Internal pressure indicator and locking mechanism for a downhole tool |
| 02/08/2005 | US6851481 Electro-hydraulically pressurized downhole valve actuator and method of use |
| 02/08/2005 | US6851479 Cavity positioning tool and method |
| 02/08/2005 | US6851476 Dual sensor freepoint tool |
| 02/08/2005 | CA2441672C Method and system for accessing subterranean deposits from the surface |
| 02/08/2005 | CA2441671C Method and system for accessing subterranean deposits from the surface |
| 02/08/2005 | CA2316903C Determining the shape and orientation of a borehole |
| 02/08/2005 | CA2314061C Reservoir management system and method |
| 02/08/2005 | CA2311521C Inflatable packer inflation verification system |
| 02/08/2005 | CA2222258C Video inspection or logging tool |
| 02/08/2005 | CA2192276C Transducer for sonic logging-while-drilling |
| 02/08/2005 | CA2074954C Device for the assembly or disassembly of probes in process pipes, tanks, etc |
| 02/07/2005 | CA2614505A1 Method of using a two-axis gyroscopic |
| 02/03/2005 | WO2005010559A1 Method and apparatus for mud pulse telemetry |
| 02/03/2005 | WO2004094959A3 Apparatus and methods for remote monitoring of flow conduits |
| 02/03/2005 | US20050024231 Apparatus and methods for self-powered communication and sensor network |
| 02/03/2005 | US20050023036 System and method for tracking and communicating with a boring tool |
| 02/03/2005 | US20050022987 Method and apparatus for improved communication in a wellbore utilizing acoustic signals |
| 02/03/2005 | DE10236238B4 Sondefuß für Bohrlochkollektoren in U-Rohrform Sondefuß for borehole collectors in the U-tube shape |
| 02/03/2005 | CA2809128A1 Method and apparatus for mud pulse telemetry |
| 02/03/2005 | CA2532115A1 Method and apparatus for mud pulse telemetry |
| 02/02/2005 | EP1502005A1 Method and apparatus for determining drill string movement mode |
| 02/02/2005 | EP1502004A1 System and method for interpreting drilling data |
| 02/02/2005 | EP1502003A2 Method for improving drilling depth measurements |
| 02/02/2005 | CN2675861Y Balance piston type well measuring headstall |
| 02/02/2005 | CN2675860Y Sensor mounting rack for movable instrument house |
| 02/02/2005 | CN1575377A Forming openings in a hydrocarbon containing formation using magnetic tracking |
| 02/02/2005 | CN1575376A In situ recovery from a hydrocarbon containing formation using barriers |
| 02/02/2005 | CN1575375A In situ updating of coal |
| 02/02/2005 | CN1575374A Seismic monitoring of in situ conversion in a hydrocarbon containing formation |
| 02/02/2005 | CN1575373A In situ thermal processing of a hydrocarbon containing formation via backproducing through a heater well |
| 02/02/2005 | CN1573012A Determination of borehole geometry inside cased wells with crosswell electromagnetics |
| 02/02/2005 | CN1573011A Methods, apparatus, and systems for obtaining formation information utilizing sensors attached to a casing in a wellbore |
| 02/02/2005 | CN1187580C Multiphase flow measurement system |
| 02/01/2005 | US6850463 Borehole logging apparatus for deep well drilling |
| 02/01/2005 | US6850168 Method and apparatus for LWD shear velocity measurement |
| 02/01/2005 | US6850161 Systems and methods for identifying and mapping conduit location |
| 02/01/2005 | US6850068 Formation resistivity measurement sensor contained onboard a drill bit (resistivity in bit) |
| 02/01/2005 | US6848189 Method and apparatus for measuring a distance |
| 01/27/2005 | WO2005008030A1 Use of cesium as a tracer in coring operations |
| 01/27/2005 | WO2005008029A1 Determination of the orientation and/or position of the downhole device |
| 01/27/2005 | WO2005008028A1 Electrical imaging in conductive and non-conductive mud |
| 01/27/2005 | WO2005008017A2 Instrumented drill head, related drilling/bolting machines, and methods |
| 01/27/2005 | WO2004065749A3 Integrated drilling dynamics system and method of operating same |
| 01/27/2005 | US20050018192 Method and apparatus for a high resolution downhole spectrometer |
| 01/27/2005 | US20050017723 Evaluation of fracture geometries in rock formations |
| 01/27/2005 | US20050016771 While drilling system and method |
| 01/27/2005 | US20050016770 While drilling system and method |
| 01/27/2005 | US20050016302 Traction apparatus |
| 01/27/2005 | US20050016292 Multiphase flow measurement system |
| 01/26/2005 | EP1060450A4 Method for measuring and controlling the flow of natural gas from gas wells |
| 01/26/2005 | CN2674092Y Composite cable for power testing for shallow electric pump |
| 01/26/2005 | CN2674091Y Electronic type instrument for placing meter(s) at downhole |
| 01/26/2005 | CN2674090Y Hydraulic pressure-sampling device for oil-gas well head |
| 01/26/2005 | CN2674089Y Multiple-hit type well head connector |
| 01/26/2005 | CN2674088Y Instrument for testing resistivity of well drilling liquid |
| 01/26/2005 | CN1570602A Method and device for evaluating physical parameters of an underground reservoir from rock cuttings taken therefrom |
| 01/26/2005 | CN1570351A Low-frequency sound wave stacked piezo-electric transducer |
| 01/26/2005 | CN1570350A Tracking reception piloting device in trenchless guiding instrument system |
| 01/26/2005 | CN1186596C Method for measuring continuous current flux of separate injection well |
| 01/25/2005 | US6847585 Method for acoustic signal transmission in a drill string |
| 01/25/2005 | US6847304 Apparatus and method for transmitting information to and communicating with a downhole device |
| 01/25/2005 | US6847034 Downhole sensing with fiber in exterior annulus |
| 01/25/2005 | US6845822 Auto-extending/retracting electrically isolated conductors in a segmented drill string |
| 01/25/2005 | US6845563 Method and device for the measurement of the drift of a borchole |
| 01/20/2005 | WO2005005778A1 Downhole Data Communication |
| 01/20/2005 | WO2004092633A3 Spoolable composite coiled tubing connector |
| 01/20/2005 | US20050012637 Method and apparatus for mud pulse telemetry |
| 01/20/2005 | US20050012499 Blast movement monitor and method for determining the movement of a blast movement monitor and associated rock as a result of blasting operations |
| 01/20/2005 | US20050012036 Providing a light cell in a wellbore |
| 01/20/2005 | US20050011645 Method of utilizing flowable devices in wellbores |
| 01/20/2005 | US20050011644 Formation pressure testing apparatus with flexible member and method of formation pressure testing |
| 01/20/2005 | CA2755402A1 Downhole data communication |
| 01/19/2005 | EP1497533A1 Magnetically activated well tool |
| 01/19/2005 | EP1497532A2 Extended range emf antenna |
| 01/19/2005 | CN2672288Y Bench worker working device of logging truck |
| 01/18/2005 | US6844498 Data transmission system for a downhole component |