| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
|---|
| 09/17/2009 | US20090229818 System and Method For Management of Steam Flooding For Oil Wells |
| 09/17/2009 | CA2715988A1 Device for pressure testing of pipes |
| 09/16/2009 | CN201310354Y Testing device for mud-pulse generator |
| 09/16/2009 | CN201310353Y Ground receiving and forwarding device for data transmission |
| 09/16/2009 | CN201310352Y High-temperature high-pressure experimental unit for optical fiber temperature-pressure sensor |
| 09/16/2009 | CN201310351Y Well head pressure temperature measuring apparatus |
| 09/16/2009 | CN201310350Y Initiation rod for measuring pressure and temperature |
| 09/16/2009 | CN201310349Y Framework-correction type inclination-angle and azimuth-angle logging unit |
| 09/16/2009 | CN201310348Y Leather bag sealing device for through casing resistivity apparatus |
| 09/16/2009 | CN201310347Y Pushing leather bag for through casing resistivity apparatus |
| 09/16/2009 | CN201310346Y Metal bellow for logging borehole instrument |
| 09/16/2009 | CN201310345Y Shaking optical fiber flow sensor |
| 09/16/2009 | CN201310344Y Optical fiber rotational speed sensor |
| 09/16/2009 | CN201310343Y Wellhead flow sensor |
| 09/16/2009 | CN201310342Y Continuous-tube well logging machine |
| 09/16/2009 | CN101532839A Non-excavation measurement while drilling system based on inertia technology |
| 09/16/2009 | CN101532383A Pressure temperature measuring device for perforating and fracturing |
| 09/16/2009 | CN101532382A A method and system of adopting multiple shot inclinometer probe for measuring well depth |
| 09/16/2009 | CN101532381A Decreasing vibration pipe nipple based on vortex induction technique |
| 09/16/2009 | CN101532373A Multi-point oriented coring system and method for drill core |
| 09/16/2009 | CN100540843C In situ thermal processing of a hydrocarbon containing formation using a natural distributed combustor |
| 09/16/2009 | CA2657724A1 Optical fiber system and method for wellhole sensing of fluid flow using diffraction effect of faraday crystal |
| 09/15/2009 | US7588943 Method for quantitative monitoring of a gas injected in a reservoir in particular in a natural environment |
| 09/15/2009 | US7588083 Method and system for scanning tubing |
| 09/15/2009 | US7588082 Downhole tool position sensing system |
| 09/15/2009 | US7588081 Method of modifying permeability between injection and production wells |
| 09/15/2009 | US7588080 Method for installing well completion equipment while monitoring electrical integrity |
| 09/15/2009 | US7587936 Apparatus and method for determining drilling fluid acoustic properties |
| 09/15/2009 | CA2562070C System and method for determining pump underperformance |
| 09/15/2009 | CA2513263C Expandable tubing and method |
| 09/15/2009 | CA2486682C A downhole tool for use in a wellbore |
| 09/15/2009 | CA2411200C Downhole anchoring tools conveyed by non-rigid carriers |
| 09/11/2009 | WO2009111412A2 Monitoring downhole conditions with drill string distributed measurement system |
| 09/11/2009 | WO2009109747A1 Subsea pipeline slug measurement and control |
| 09/11/2009 | WO2009109745A1 Flexible pipe fatigue monitoring below the bend stiffener of a flexible riser |
| 09/11/2009 | CA2717593A1 Monitoring downhole conditions with drill string distributed measurement system |
| 09/10/2009 | US20090224193 Fluid erosion protection washer for rotating shaft in mwd tool |
| 09/10/2009 | US20090223291 Gravity measurment methods for monitoring reservoirs |
| 09/09/2009 | EP2097609A1 Coiled tubing tractor assembly |
| 09/09/2009 | CN201306168Y A multi-point thermocouple for high-temperature ultra-long oil well |
| 09/09/2009 | CN201306167Y Multiphase flow metering system |
| 09/09/2009 | CN201306166Y Signal simulator for mud logging unit |
| 09/09/2009 | CN101529047A System for determining sealing in a wellbore |
| 09/09/2009 | CN101526551A Method for calculating spiral flow velocity of Newtonian fluid eccentric annuli |
| 09/09/2009 | CN101526010A Mine water bursting disaster monitoring and early-warning system and control method thereof |
| 09/09/2009 | CN101525999A Adaptability analysis method for electromagnetic measurement while drilling system |
| 09/09/2009 | CN101525998A Ground signal receiving device for electromagnetic measurement while drilling system and receiving method thereof |
| 09/09/2009 | CN101525997A Downhole signal transmitting device for electromagnetic measurement while drilling system and transmitting method thereof |
| 09/09/2009 | CN101525996A Leapfrog neutron tube target voltage control method |
| 09/09/2009 | CN101525995A Gas and liquid multiphase quantitative measuring device and method thereof |
| 09/09/2009 | CN101525994A Measuring and monitoring system for oil wellhead |
| 09/09/2009 | CN101525993A Method for monitoring and controlling sulfureted hydrogen in sulfur-containing stratum underbalanced drilling |
| 09/09/2009 | CN100538005C Equipment and method for defining drilling mode and using optimized formation to make assess measurement |
| 09/08/2009 | US7584808 Centralizer-based survey and navigation device and method |
| 09/08/2009 | US7584788 Control method for downhole steering tool |
| 09/08/2009 | US7584784 Reciprocating pump drive apparatus |
| 09/08/2009 | CA2525201C Plunger lift apparatus that includes one or more sensors |
| 09/08/2009 | CA2451231C Method and apparatus for detonating an explosive charge |
| 09/03/2009 | WO2009108889A2 Composite transducer for downhole ultrasonic imaging and caliper measurement |
| 09/03/2009 | WO2009108881A2 System and method to locate, monitor and quantify friction between a drillstring and a wellbore |
| 09/03/2009 | WO2009108596A2 Method of determining a transient electromagnetic response of a formation |
| 09/03/2009 | WO2009108254A2 Apparatus and method for sampling downhole fluids |
| 09/03/2009 | WO2009090460A3 Method for calculating the ratio of relative permeabilities of formation fluids and wettability of a formation downhole, and a formation testing tool to implement the same |
| 09/03/2009 | WO2009090455A3 Optical fiber system and method for wellhole sensing of magnetic permeability using diffraction effect of faraday rotator |
| 09/03/2009 | WO2009064656A3 Borehole survey method and apparatus |
| 09/03/2009 | US20090222209 Apparatus and method for motion correction to sensor measurements |
| 09/03/2009 | US20090222208 Magnetic Beacon Guidance System |
| 09/03/2009 | US20090220236 Multidrop communications system using wave division multiplexing |
| 09/03/2009 | US20090219784 Method and Apparatus for Investigating a Borehole with a Caliper |
| 09/03/2009 | US20090219171 Method and Apparatus for Locating A Plug Within the Well |
| 09/03/2009 | US20090218097 Wellbore intervention tool |
| 09/03/2009 | US20090218095 Pressure Equalising Devices |
| 09/03/2009 | US20090218094 Live Bottom Hole Pressure for Perforation/Fracturing Operations |
| 09/03/2009 | US20090217539 Gyroscopically-oriented survey tool |
| 09/03/2009 | DE102007020662B4 Induktives Kopplungssystem Inductive coupling system |
| 09/03/2009 | CA2715792A1 Method of determining a transient electromagnetic response of a formation |
| 09/03/2009 | CA2656853A1 Method and apparatus for mitigating environmental impact due to fluid leaks |
| 09/02/2009 | EP2096780A2 Multidrop communications system using wave division multiplexing |
| 09/02/2009 | EP2095086A1 An apparatus for leakage testing and/or pressure testing of a portion of a pipe and also a method for use of same |
| 09/02/2009 | EP1902196B1 Method and apparatus for collecting drill bit performance data |
| 09/02/2009 | CN201301706Y Portable sonic logging instrument graduating tank |
| 09/02/2009 | CN201301705Y A sound proof structure of acoustic emission transducer |
| 09/02/2009 | CN201301704Y Manual wellhead pressure testing device |
| 09/02/2009 | CN201301703Y Device for measuring water level of underground well |
| 09/02/2009 | CN201301702Y Depth and angle measuring instrument for mine blastholes |
| 09/02/2009 | CN101523181A Method and apparatus for pressure measurements in well testing |
| 09/02/2009 | CN101519961A Device and method for measuring embedding depth of proppant |
| 09/02/2009 | CN101519960A Method for correcting depth trace of self-adapting well drilling |
| 09/02/2009 | CN101519959A Drilling touching shocking integrative prospecting instrument and use method thereof |
| 09/02/2009 | CN101519958A Optical turning device |
| 09/02/2009 | CN101519954A Multifunctional combination operation process and device for injection pump unit |
| 09/01/2009 | US7583371 Combined bragg grating wavelength interrogator and brillouin backscattering measuring instrument |
| 09/01/2009 | US7581440 Apparatus and methods to perform downhole measurements associated with subterranean formation evaluation |
| 09/01/2009 | CA2550405C Method and apparatus for enhancing directional accuracy and control using bottomhole assembly bending measurements |
| 09/01/2009 | CA2519508C A motor pulse controller |
| 08/28/2009 | CA2654487A1 Live bottom hole pressure for perforation/fracturing operations |
| 08/27/2009 | WO2009105660A2 Distributed sensors for dynamics modeling |
| 08/27/2009 | WO2009105659A2 Echo-decay-acceleration data acquisition method for gas identification using a low-field gradient |
| 08/27/2009 | WO2009105561A2 Downhole measurement while drilling system and method |
| 08/27/2009 | WO2009105555A2 Downhole local mud weight measurement near bit |