| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
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| 01/26/2012 | US20120017674 Smart seals and other elastomer systems for health and pressure monitoring |
| 01/26/2012 | US20120017673 Pressure Management System For Well Casing Annuli |
| 01/26/2012 | DE102010032134A1 Method for inserting borehole in ground, involves running borehole in defined position to already existing borehole or already cable that is installed in ground |
| 01/26/2012 | CA2805956A1 Well |
| 01/26/2012 | CA2805955A1 A safety mechanism for a well, a well comprising the safety mechanism, and related methods |
| 01/26/2012 | CA2805876A1 System and method for reservoir characterization |
| 01/26/2012 | CA2805571A1 Monitoring of objects in conjunction with a subterranean well |
| 01/26/2012 | CA2805326A1 Communication through an enclosure of a line |
| 01/26/2012 | CA2805173A1 Method and system of determining a parameter associated with a formation corrected for neutrons produced |
| 01/26/2012 | CA2804053A1 Method for in situ fluid assessment and optimization during wellbore displacement operations |
| 01/25/2012 | EP2410092A1 Device and method for manufacturing vertical walls in a foundation soil |
| 01/25/2012 | CN202125294U Rotary underground slurry pulse generator |
| 01/25/2012 | CN202125293U Device for separating and metering natural gas well and coal bed gas well pipeline |
| 01/25/2012 | CN202125292U Liquid level automatic adjuster |
| 01/25/2012 | CN202125247U Fully-electric composite continuous pipe drilling device |
| 01/25/2012 | CN1619098B Downhole tool sensor system and method |
| 01/25/2012 | CN102330551A Method and system for rectifying sound wave pressure in sound wave amplitude well logging |
| 01/25/2012 | CN102330550A Drifting tubular column carrying bidirectional-moving caliper for horizontal open-hole wells |
| 01/25/2012 | CN102330549A Double-motor cam type debugging arm of water injection well debugger |
| 01/25/2012 | CN102330548A Method for obtaining NMR (nuclear magnetic resonance) echo strings for ringing elimination |
| 01/24/2012 | US8103977 Semiconductor device and its manufacturing method, semiconductor manufacturing mask, and optical proximity processing method |
| 01/24/2012 | US8103135 Well bore sensing |
| 01/24/2012 | US8100196 Method and apparatus for collecting drill bit performance data |
| 01/24/2012 | US8100177 Method of logging a well using a thermal neutron absorbing material |
| 01/24/2012 | CA2723656C Folding ultrasonic borehole imaging tool |
| 01/24/2012 | CA2587884C Modular drilling apparatus with power and/or data transmission |
| 01/24/2012 | CA2529135C System and method for transmitting electric power into a bore hole |
| 01/24/2012 | CA2407453C Far-end cross-talk cancellation for data transmission on multiple propagation modes |
| 01/21/2012 | CA2745645A1 System and method for determining an orientation of a device |
| 01/19/2012 | WO2012009549A1 System and method for estimating remaining useful life of a downhole tool |
| 01/19/2012 | WO2011150213A3 Deployment of downhole pump using a cable |
| 01/19/2012 | WO2011146327A3 Detection of tool in pipe |
| 01/19/2012 | WO2011130136A3 Dielectric spectroscopy for downhole fluid analysis during formation testing |
| 01/19/2012 | WO2011130080A3 Improved current measurement for water-based mud galvanic electrical imaging and laterlog tools |
| 01/19/2012 | WO2011126958A3 Acoustic measurements while using a coring tool |
| 01/19/2012 | WO2011124978A3 Real time data compression and transmission |
| 01/19/2012 | WO2011100437A3 X-ray fluorescence analyzer |
| 01/19/2012 | WO2011094268A3 Combined swept-carrier and swept-modulation frequency optical frequency domain reflectometry |
| 01/19/2012 | US20120013335 Method of adjusting properties of drilling fluids and apparatus for use in such methods |
| 01/19/2012 | US20120012308 System and method for reservoir characterization |
| 01/19/2012 | US20120011928 Fluid flow sensor |
| 01/18/2012 | EP1040251B1 Method to determine self-calibrated circumferential cased bond impedance |
| 01/18/2012 | CN202117909U Suppressed pressure curve tester for mechanical oil production well |
| 01/18/2012 | CN202117665U General-purpose intelligent unlocking system |
| 01/18/2012 | CN202117664U Device for measuring shaft bottom parameters |
| 01/18/2012 | CN202117663U Casing collar positioner |
| 01/18/2012 | CN202117662U Wireless explosion-proof sleeve detecting device |
| 01/18/2012 | CN202117661U Self-locking type stratum testing artificial pipe string |
| 01/18/2012 | CN202117660U Resistance measuring device based on symphonic mbus (M-BUS) |
| 01/18/2012 | CN202117659U Multi-core rotary pup joint |
| 01/18/2012 | CN202117658U Protecting box for logging instrument |
| 01/18/2012 | CN202117657U High-temperature perforator tester for oil and gas wells |
| 01/18/2012 | CN202117656U Remote automatically monitoring system of oil well faults |
| 01/18/2012 | CN202117655U Centering guide special for horizontal well imaging logging |
| 01/18/2012 | CN202117654U High-resolution density logging device |
| 01/18/2012 | CN202117653U Combination logging instrument for output section of screw pump |
| 01/18/2012 | CN202117580U Online logging centralizer for horizontal well |
| 01/18/2012 | CN202117572U Drill string equipped with downhole blowout preventer |
| 01/18/2012 | CN102325963A Drilling scorecard |
| 01/18/2012 | CN102322999A A load cell for a downhole load measuring tool |
| 01/18/2012 | CN102322294A Comprehensive geological prediction method for karst tunnel construction |
| 01/18/2012 | CN102322258A Drill-following acoustic logging method and device capable of reducing and insulating sound on drill collar |
| 01/18/2012 | CN102322257A Pressure balancing device |
| 01/18/2012 | CN102322256A Horizontal well landing geosteering method |
| 01/18/2012 | CN102322255A Method, device and system for detecting on-site steam-injection and heat-insulation oil pipe |
| 01/18/2012 | CN102322254A Downhole steam entry profile monitoring method |
| 01/18/2012 | CN102322250A Gas injection aided electric heating oil shale in-situ exploitation simulating device and system |
| 01/18/2012 | CN102322247A Device and method for evaluating displacement capability of wetting phase of rock at high temperature under high pressure |
| 01/18/2012 | CN102322238A Oil tube testing plugging process and tube testing plugging device |
| 01/18/2012 | CN102322056A Super-large-torque spiral hole-boring and pile-pouring machine |
| 01/18/2012 | CN102134967B Construction method of consolidating horizontal directional drilling hole by grouting coal seam baseboard |
| 01/18/2012 | CN102102538B Orifice data processing device for coal mine underground measurement while drilling |
| 01/17/2012 | US8099241 Method and apparatus for real time oil based mud contamination monitoring |
| 01/17/2012 | US8097212 Detection of contamination of municipal water distribution systems |
| 01/17/2012 | US8096370 Apparatus and method for producing soil elements underground |
| 01/16/2012 | CA2746277A1 Method for generating a hex-dominant mesh from a geometrically complex tank |
| 01/16/2012 | CA2746188A1 Fluid flow sensor |
| 01/12/2012 | WO2012006350A1 Coiled umbilical tubing |
| 01/12/2012 | WO2012006327A2 Fiber support arrangement and method |
| 01/12/2012 | WO2012006093A2 Fluid sampling tool |
| 01/12/2012 | WO2012005725A1 Method and system of determining constituent components of a fluid sample |
| 01/12/2012 | WO2011146923A3 Method for interpretation of distributed temperature sensors during wellbore treatment |
| 01/12/2012 | WO2011139696A3 At-bit evaluation of formation parameters and drilling parameters |
| 01/12/2012 | WO2011109207A3 Modified pulse sequence to estimate properties |
| 01/12/2012 | US20120007747 Method and system for transmitting data from a device to a receiving unit |
| 01/12/2012 | US20120006597 Drill head |
| 01/12/2012 | US20120006109 Borehole sensing and clamping systems and methods of using the same |
| 01/12/2012 | CA2804397A1 Fiber support arrangement and method |
| 01/11/2012 | EP2404034A2 Methods, system and computer program product for delivering well data |
| 01/11/2012 | EP2404033A2 Early kick detection in an oil and gas well |
| 01/11/2012 | EP2404032A2 Tool for locating and plugging lateral wellbores |
| 01/11/2012 | EP2404028A2 Apparatus and method for a wireless sensor to monitor barrier system integrity |
| 01/11/2012 | CN202108505U Acoustic velocity measurement device of drilling mud |
| 01/11/2012 | CN202108504U Forecast system for flow difference, well kick and lost circulation |
| 01/11/2012 | CN202108503U Three-core shock-resistant bridle for cable of magnetic locator |
| 01/11/2012 | CN202108502U Underground water level detecting device for drilling slurry protecting wall |
| 01/11/2012 | CN202108501U Novel storage type logging release system |
| 01/11/2012 | CN202108500U Well mouth butt joint device for continuous oil pipe tests |
| 01/11/2012 | CN202108499U System for measuring oil by mass method |
| 01/11/2012 | CN202108498U Inner-peeping measuring system for underground drill hole based on embedded type advanced RISC machines (ARM) |