| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
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| 02/12/2014 | EP2694914A1 Method and apparatus for determining orientation using a plurality of angular rate sensors and accelerometers |
| 02/12/2014 | EP2694772A1 Automatic standpipe pressure control in drilling |
| 02/12/2014 | CN203430506U Visual physical simulation device considering fluid channeling between layers |
| 02/12/2014 | CN203430505U Tubing string coupling alarm |
| 02/12/2014 | CN203430504U A connecting structure of a core rod and a guide rod of a multi-arm caliper |
| 02/12/2014 | CN203430503U Direct-reading type two-channel examining seal pressure gauge |
| 02/12/2014 | CN203430502U Control pup joint for position detection |
| 02/12/2014 | CN203430501U Combined drilling tool capable of measuring inclination through opened hole |
| 02/12/2014 | CN203430493U 地面注水监测仪 Ground water monitoring instrument |
| 02/12/2014 | CN203430468U Water detecting and blocking device with intelligent switches |
| 02/12/2014 | CN103573263A Tight sandstone reservoir fracturing production horizontal well flowing pressure design method |
| 02/12/2014 | CN103573262A Pressure test device for oil field pumping device |
| 02/12/2014 | CN103573261A Underground ultrasonic roof and floor measuring method and device |
| 02/12/2014 | CN103573260A Composite electromagnetic wave transmission and measurement while drilling device |
| 02/12/2014 | CN103573259A Dipole antenna short section of electromagnetic measurement while drilling system |
| 02/12/2014 | CN103573258A Method for decoding downlink instruction by rotary steering drilling system |
| 02/12/2014 | CN103573257A Information transmission device for well logging during drilling |
| 02/12/2014 | CN103573256A Underground blowout preventer experiment bench device and operation method thereof |
| 02/12/2014 | CN103573255A Simulation experiment device for three-dimensional seepage flow field monitoring |
| 02/12/2014 | CN103573254A Drilling azimuth instrument |
| 02/12/2014 | CN103573253A Unblocking device of cable logging instrument |
| 02/12/2014 | CN103573252A Wireless indicator, wireless indicator system and indicator diagram measuring method thereof |
| 02/12/2014 | CN103573251A Method for carrying out fracture CT (Computed Tomography) scanning and monitoring on fracture initiation and extension of large-size volcanic hydraulic fracture |
| 02/12/2014 | CN103573250A Method for calculating distances between horizontal well borehole and upper and lower interfaces of stratum |
| 02/12/2014 | CN103573249A Online single-well natural gas and liquid yield metering device |
| 02/12/2014 | CN103573248A Magnetic interference measuring device for borehole |
| 02/12/2014 | CN103573247A Parallel planar coil for induction logging and induction logging device |
| 02/12/2014 | CN103573246A Triaxial quadrature coil system, triaxial quadrature coil system adjusting method and plate-type insulator |
| 02/12/2014 | CN101586458B Energy saving and efficiency increasing system |
| 02/11/2014 | US8648733 Electromagnetic telemetry assembly with protected antenna |
| 02/11/2014 | US8646529 Method and system for treating a subterranean formation using diversion |
| 02/11/2014 | US8646525 System and method for enhancing oil recovery from a subterranean reservoir |
| 02/11/2014 | US8646520 Precision marking of subsurface locations |
| 02/11/2014 | US8646519 Low-profile suspension of logging sensor and method |
| 02/11/2014 | US8646327 Fluid flow sensor |
| 02/11/2014 | CA2727964C Magnetization of target well casing string tubulars for enhanced passive ranging |
| 02/11/2014 | CA2727885C Enhanced passive ranging methodology for well twinning |
| 02/11/2014 | CA2708096C Method and system for delineating a second wellbore from a first wellbore |
| 02/11/2014 | CA2671252C Measurement device in a horizontal well |
| 02/06/2014 | WO2014022831A1 Downhole gas generator with multiple combustion chambers and method of operation |
| 02/06/2014 | WO2014022614A1 Assessment, monitoring and control of drilling operations and/or geological-characteristic assessment |
| 02/06/2014 | WO2014022320A2 Monitoring, diagnosing and optimizing gas lift operations |
| 02/06/2014 | WO2014022127A1 Monitoring and diagnosing water flooded reservoirs |
| 02/06/2014 | WO2014021899A1 Method and apparatus for remote zonal stimulation with fluid loss device |
| 02/06/2014 | WO2013148007A3 Activation-indicating wellbore stimulation assemblies and methods of using the same |
| 02/06/2014 | US20140039793 Monitoring, diagnosing and optimizing gas lift operations |
| 02/06/2014 | US20140036629 Downlinking Communication System And Method |
| 02/06/2014 | US20140034388 Seismic Navigation |
| 02/06/2014 | US20140034301 Cementing Plug Tracking Using Distributed Strain Sensing |
| 02/06/2014 | US20140034300 Method and arrangement to establish during down-the-hole drilling communication between the cavity of the drill string and the surrounding material |
| 02/06/2014 | US20140034298 Remote Activated Deflector |
| 02/06/2014 | US20140034291 Method of and apparatus for completing a well |
| 02/05/2014 | EP2692075A1 Wireless network discovery and path optimization algorithm and system |
| 02/05/2014 | EP2691606A2 Transmitter and receiver synchronization for wireless telemetry systems |
| 02/05/2014 | EP2691605A1 Lag calculation with caving correction in open hole |
| 02/05/2014 | CN203420706U Simulation experiment set of variable angle horizontal well |
| 02/05/2014 | CN203420705U System for monitoring flowing bottomhole pressure in real time |
| 02/05/2014 | CN203420704U Sucker-rod string side force testing device |
| 02/05/2014 | CN203420703U High-temperature high-pressure steam injection two-dimensional physical simulation experiment device and system |
| 02/05/2014 | CN203420702U Coal bed gas shaft gas-liquid two-phase flow simulation device |
| 02/05/2014 | CN203420690U Water seeking and separating and production operation integrated tubular column of two layers of sidetrack well |
| 02/05/2014 | CN203420648U Staggered supporting type centralizer of cased well logger |
| 02/05/2014 | CN103556991A Deep water drilling data measuring and recording system and method |
| 02/05/2014 | CN103556990A Oil production well productivity tracking and evaluating method |
| 02/05/2014 | CN103556989A Device for implementing shaft surrounding rock water pressure measurement and limited drainage by freezing method and construction method thereof |
| 02/05/2014 | CN103556988A Well deviation measuring system for gas drilling |
| 02/05/2014 | CN103556987A Hydraulic test system of well control device for oil and gas fields |
| 02/05/2014 | CN103556986A Measuring method for displacement efficiency of simulated well cementation cementing |
| 02/05/2014 | CN103556985A Drill working state automatic identification method suitable for hydraulic drill |
| 02/05/2014 | CN103556984A Detection method of sealing property of valve head and valve seat of wireless inclinometer while drilling |
| 02/05/2014 | CN103556983A Diameter-variable stabilizer working state detection method and system |
| 02/05/2014 | CN103554126A Preparation method and application of fluorescein derivative serving as tracer agent for oil field |
| 02/05/2014 | CN102108851B Horizontal well steam injection method and system |
| 02/04/2014 | US8645069 Method for determining a steam dryness factor |
| 02/04/2014 | US8643373 Electrode |
| 02/04/2014 | US8640793 Dynamic steering tool |
| 02/04/2014 | US8640779 Mud pulser actuation |
| 02/04/2014 | US8640772 Enhanced geothermal systems and reservoir optimization |
| 02/04/2014 | US8640771 Determination of coal bed natural gas production factors and a system to determine same |
| 02/04/2014 | CA2560100C Apparatus and methods for acoustically determining fluid properties while sampling |
| 02/02/2014 | CA2822824A1 Loudness based method and system for determining relative location of an acoustic event along a channel |
| 01/30/2014 | WO2014018844A1 Object detection system and methodology |
| 01/30/2014 | WO2014018397A1 Herbicidal compositions comprising 4-amino-3-chloro-5-fluoro-6-(4-chloro-2-fluoro-3-methoxphenyl) pyridine-2-carboxylic acid or a derivative thereof and vlcfa synthesis and fatty acid/lipid synthesis inhibiting herbicides |
| 01/30/2014 | WO2014018345A1 Optical photodetector for high temperature operation |
| 01/30/2014 | WO2014018051A1 Actuation assembly for downhole devices in a wellbore |
| 01/30/2014 | WO2014018010A1 Wireless downhole feedthrough system |
| 01/30/2014 | WO2014018003A1 Well drilling methods with audio and video inputs for event detection |
| 01/30/2014 | WO2014015404A1 Methods and systems for analyses used in petroleum wells |
| 01/30/2014 | WO2014015372A1 Down-hole monitoring and survey system |
| 01/30/2014 | WO2014015362A1 Apparatus and method for subsea testing |
| 01/30/2014 | WO2013184040A3 Downhole sensor |
| 01/30/2014 | WO2013177353A3 Evaluating systems associated with wellheads |
| 01/30/2014 | US20140032115 Systems and Methods for Determining the Moments and Forces of Two Concentric Pipes Within a Wellbore |
| 01/30/2014 | US20140027179 Drill Bit with Electrohydraulically Adjustable Pads for Controlling Depth of Cut |
| 01/30/2014 | US20140027176 Drill Bit with a Force Application Using a Motor and Screw Mechanism for Controlling Extension of a Pad in the Drill Bit |
| 01/30/2014 | US20140027113 Systems and methods for reducing pvt effects during pressure testing of a wellbore fluid containment system |
| 01/30/2014 | US20140027111 Active seismic monitoring of fracturing operations & determining characteristics of a subterranean body using pressure data and seismic data |
| 01/30/2014 | US20140026428 Inclination measurement devices and methods of use |
| 01/29/2014 | EP2689281A2 Extended temperature fiber optic cable design |
| 01/29/2014 | EP2689103A2 Sonde with integral pressure sensor and method |