| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
|---|
| 03/30/2011 | CN201780248U Viscosity and density intelligent comprehensive test instrument |
| 03/30/2011 | CN201778818U Manchester data transfer efficiency enhancement device |
| 03/30/2011 | CN201778817U Sealing checker of water injection well |
| 03/30/2011 | CN201778816U Long-time temperature testing instrument for steam injection wells |
| 03/30/2011 | CN201778815U Pressure test device for sucker rod pump oil-well tubing strings |
| 03/30/2011 | CN201778814U Mud-pulse-type wireless inclinometer while drilling |
| 03/30/2011 | CN201778813U Power-off arm withdrawal device of sidewall contact device in electric imaging logging instrument |
| 03/30/2011 | CN201778812U Measuring head of well testing truck using steel wire |
| 03/30/2011 | CN201778811U Oil over-annulus logging top-and-bottom pulley oil-scraping counting four-functional device |
| 03/30/2011 | CN201778810U Multiphase multifunctional measuring device of oil well |
| 03/30/2011 | CN201778809U Single-well meter for gathering and transferring oil gas |
| 03/30/2011 | CN201778808U Oil well zonal testing device |
| 03/30/2011 | CN201778807U Movable oil well quality measuring device |
| 03/30/2011 | CN201778806U Full-automatic multifunctional isothermal line adsorption and desorption and pollution evaluation experimental instrument |
| 03/30/2011 | CN201778805U Annulus logging operation platform |
| 03/30/2011 | CN201778804U Core test block used for testing properties of drilling liquid |
| 03/30/2011 | CN201778803U Vertical fracture flow conductivity evaluation experimental device |
| 03/30/2011 | CN201778795U Shaftless drum and cable pay-off system combination |
| 03/30/2011 | CN201778786U Hydraulic control isolation valve for downhole operations |
| 03/30/2011 | CN201778785U Underground hydraulic control balanced valve |
| 03/30/2011 | CN201778752U Cementing construction parameter monitoring device |
| 03/30/2011 | CN201778739U Blowout preventer wellhead detecting device |
| 03/30/2011 | CN201778672U Sealing joint body of neutron generator for petroleum logging |
| 03/30/2011 | CN101994509A Multipurpose ultrahigh-pressure packer tester |
| 03/30/2011 | CN101994508A Underground electromagnetic detector |
| 03/30/2011 | CN101514628B Underground pressure real-time measuring and correcting method |
| 03/29/2011 | US7916041 Hole depth sensing |
| 03/29/2011 | US7913806 Enclosures for containing transducers and electronics on a downhole tool |
| 03/29/2011 | US7913773 Bidirectional drill string telemetry for measuring and drilling control |
| 03/29/2011 | US7913757 Methods of formulating a cement composition |
| 03/29/2011 | US7913557 Adjustable testing tool and method of use |
| 03/29/2011 | US7913498 Electrical submersible pumping systems having stirling coolers |
| 03/29/2011 | CA2716077A1 Coiled tubing having a capillary window and method for making same |
| 03/29/2011 | CA2619317C Brillouin distributed temperature sensing calibrated in-situ with raman distributed temperature sensing |
| 03/29/2011 | CA2614216C Automatic adjustment of nmr pulse sequence to optimize snr based on real time analysis |
| 03/29/2011 | CA2531301C System and method for completing a subterranean well |
| 03/29/2011 | CA2490953C Magnetization of target well casing string tubulars for enhanced passive ranging |
| 03/29/2011 | CA2465658C Orientation device for a core sample |
| 03/28/2011 | CA2726154A1 Gas migration test method |
| 03/24/2011 | WO2011035131A2 Tdem forward focusing system for downhole use |
| 03/24/2011 | WO2011035089A2 Oilfield optical data transmission assembly joint |
| 03/24/2011 | WO2011034783A2 Fluid monitoring and flow characterization |
| 03/24/2011 | WO2011033257A1 Downhole measurement apparatus |
| 03/24/2011 | WO2011032279A1 Method for monitoring or tracing operations in well boreholes |
| 03/24/2011 | WO2010138314A3 Downhole optical fiber splice housing |
| 03/24/2011 | WO2010091239A4 Method and apparatus for collecting drill bit performance data |
| 03/24/2011 | US20110069583 Apparatus and method for acoustic telemetry measurement of well bore formation debris accumulation |
| 03/24/2011 | US20110068794 Temperature and pressure transducer |
| 03/24/2011 | US20110067928 Bottom-hole assembly, and a method and system for transmitting data from a bottom-hole assembly |
| 03/24/2011 | US20110067888 Plug counter and method |
| 03/24/2011 | US20110067859 Method and apprartus for determining locations of multiple casings within a wellbore conductor |
| 03/24/2011 | US20110067857 Determining properties of a subterranean structure during hydraulic fracturing |
| 03/24/2011 | CA2774299A1 Method for monitoring or tracing operations in well boreholes |
| 03/24/2011 | CA2774276A1 Downhole measurement apparatus |
| 03/24/2011 | CA2773714A1 Oilfield optical data transmission assembly joint |
| 03/23/2011 | EP2297598A2 Well log normalization |
| 03/23/2011 | EP2297596A2 Well log correlation |
| 03/23/2011 | EP1415150B1 Method for quantitative monitoring of a gas injected into a reservoir in particular in a natural environment |
| 03/23/2011 | CN201773982U 17-core high voltage plug for drilling apparatus |
| 03/23/2011 | CN201772975U Experiment device for detecting sealing properties of expanded capsule and sealing liquid |
| 03/23/2011 | CN201771489U Acoustic variable density logging instrument |
| 03/23/2011 | CN201771488U Oil pipe coupling detection device |
| 03/23/2011 | CN201771487U Direction adjusting sub for combination logging |
| 03/23/2011 | CN201771460U Wellhead pressure test blanking plug |
| 03/23/2011 | CN201771441U Special wireless drilling inclinometer shock absorber |
| 03/22/2011 | US7911879 Method of detecting signals in acoustic drill string telemetry |
| 03/22/2011 | US7909095 Valve device and associated methods of selectively communicating between an interior and an exterior of a tubular string |
| 03/22/2011 | CA2648390C Downhole tool for measuring a fluid flow rate therethrough and a well completion incorporating same |
| 03/22/2011 | CA2643380C Electro thermal energy storage for in situ recovery of fluid fuel from hydro carbonaceous earth formations |
| 03/22/2011 | CA2573670C System and method for deflection compensation in power drive system for connection of tubulars |
| 03/22/2011 | CA2447312C Methods and apparatus for rapidly measuring pressure in earth formations |
| 03/21/2011 | CA2714984A1 Apparatus and method for acoustic telemetry measurement of well bore formation debris accumulation |
| 03/17/2011 | WO2011032133A2 Monitoring drilling performance in a sub-based unit |
| 03/17/2011 | WO2011032080A2 Borehole force measurement |
| 03/17/2011 | WO2011031942A2 Drilling system for making lwd measurements ahead of the bit |
| 03/17/2011 | WO2011031863A2 Drill bit with rate of penetration sensor |
| 03/17/2011 | WO2011031696A2 Drill bits and methods of drilling curved boreholes |
| 03/17/2011 | WO2011031641A2 Dissolvable connector guard |
| 03/17/2011 | WO2011031481A2 Apparatus and methods for controlling bottomhole assembly temperature during a pause in drilling boreholes |
| 03/17/2011 | WO2011031480A2 Method and apparatus for controlling bottomhole temperature in deviated wells |
| 03/17/2011 | WO2011031447A2 Instrumented swellable element |
| 03/17/2011 | WO2010035098A3 High- temperature downhole devices |
| 03/17/2011 | WO2010035042A3 Method of testing a pipeline cut |
| 03/17/2011 | US20110066405 System and Method For Providing A Time-Based Representation of Data |
| 03/17/2011 | US20110062959 Tracking positions of personnel, vehicles, and inanimate objects |
| 03/17/2011 | US20110061934 Vibration Damping Tool for Downhole Electronics |
| 03/17/2011 | US20110061865 Directional setting tool and associated methods |
| 03/17/2011 | US20110061864 Wireless pipe recovery and perforating system |
| 03/17/2011 | US20110061863 Fluid monitoring and flow characterization |
| 03/17/2011 | US20110061862 Instrumented swellable element |
| 03/17/2011 | US20110061861 Clustered wellhead trunkline protection and testing system with esp speed controller and emergency isolation valve |
| 03/17/2011 | US20110061860 Computer-implemented systems and methods for controlling sand production in a geomechanical reservoir system |
| 03/17/2011 | US20110061455 Borehole force measurement |
| 03/17/2011 | US20110061454 Sensor housing apparatus |
| 03/17/2011 | US20110061453 Fluid Flow Measuring Device and Method |
| 03/17/2011 | CA2776610A1 Drill bits and methods of drilling curved boreholes |
| 03/17/2011 | CA2774211A1 Borehole force measurement |
| 03/17/2011 | CA2773668A1 Monitoring drilling performance in a sub-based unit |
| 03/17/2011 | CA2773057A1 Drill bit with rate of penetration sensor |
| 03/16/2011 | EP2294460A2 Forward models for gamma ray measurement analysis of subterranean formations |