| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
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| 06/29/2011 | CN102108857A Restrictor ring bearing assembly |
| 06/29/2011 | CN102108856A Small-angle well inclination state measuring method and device |
| 06/29/2011 | CN102108855A Self-offset well shock detection device |
| 06/29/2011 | CN102108851A Horizontal well steam injection method and system |
| 06/29/2011 | CN101265803B Horizontal and uniform acid distribution integrated experimental device and its operation method |
| 06/28/2011 | US7968841 Force and acceleration sensor using four wave mixing technique |
| 06/28/2011 | US7967081 Closed-loop physical caliper measurements and directional drilling method |
| 06/28/2011 | US7967080 Boring tool tracking fundamentally based on drill string length, pitch and roll |
| 06/28/2011 | US7967066 Method and apparatus for Christmas tree condition monitoring |
| 06/28/2011 | US7966875 Methods and apparatus for measuring formation properties |
| 06/28/2011 | US7966874 Multi-resolution borehole profiling |
| 06/28/2011 | CA2703405A1 Method and system of displaying data sets indicative of physical parameters associated with a formation penetrated by a wellbore |
| 06/28/2011 | CA2632795C System, apparatus, and method of conducting measurements of a borehole |
| 06/28/2011 | CA2412249C Leak remedy through sealants in local reservoirs |
| 06/23/2011 | WO2011075280A2 Workflow for petrophysical and geophysical formation evaluation of wireline and lwd log data |
| 06/23/2011 | WO2011073746A2 Calibration of electrochemical sensor |
| 06/23/2011 | WO2011031641A3 Dissolvable connector guard |
| 06/23/2011 | WO2011022306A3 Gravity interpretation workflow in injection wells |
| 06/23/2011 | WO2011021053A3 Apparatus and method for downhole communication |
| 06/23/2011 | US20110153217 Drillstring motion analysis and control |
| 06/23/2011 | US20110149687 Acoustic transceiver with adjacent mass guided by membranes |
| 06/23/2011 | US20110147233 Electrical cased well-logging method |
| 06/23/2011 | US20110147083 Analyzing Toolface Velocity to Detect Detrimental Vibration During Drilling |
| 06/23/2011 | US20110147082 System For Tracking And Maintaining An On-Grade Horizontal Borehole |
| 06/23/2011 | US20110146975 Wireline-Adjustable Downhole Flow Control Devices and Methods for Using Same |
| 06/23/2011 | US20110146974 Delivery of nanodispersions below ground |
| 06/23/2011 | CA2784405A1 Workflow for petrophysical and geophysical formation evaluation of wireline and lwd log data |
| 06/23/2011 | CA2783400A1 Calibration of electrochemical sensor |
| 06/22/2011 | EP2336487A1 Use of micro-electro-mechanical systems (MEMS) in well treatments |
| 06/22/2011 | EP2336482A2 Folding ultrasonic borehole imaging tool |
| 06/22/2011 | EP2334905A2 Method of determining borehole conditions from distributed measurement data |
| 06/22/2011 | EP2334904A1 Method for testing an engineered geothermal system using one stimulated well |
| 06/22/2011 | CN201874564U Liquid supply device for simulation of flow of oil reservoir |
| 06/22/2011 | CN201874563U Intelligent gyro measuring instrument |
| 06/22/2011 | CN201874562U Wellbore-temperature measuring device in well cementing process |
| 06/22/2011 | CN201874561U Temperature sensor used for oil logging wireless transmission |
| 06/22/2011 | CN201874560U Heat insulation box for pressure gauge of steam injection oil well |
| 06/22/2011 | CN201874559U Automatic liquid-level monitor for infrasonic-wave non-pressure oil well |
| 06/22/2011 | CN201874558U Wired measurement-while-drilling unscrewing preventer and wired measurement-while-drilling instrument barrel thereof |
| 06/22/2011 | CN201874557U Annular heat-absorbing sleeve for petroleum logging instruments |
| 06/22/2011 | CN201874556U Key release prevention structure for key-sitting type measurement-while-drilling instrument |
| 06/22/2011 | CN201874555U Receiving and releasing device for regulating arm of flow measuring and regulating instrument |
| 06/22/2011 | CN201874554U Shock absorber applicable to measurement-while-drilling probes |
| 06/22/2011 | CN201874553U Wired while-drilling swirl guide shoe capable of being used for seating wireless circulating sleeve |
| 06/22/2011 | CN201874552U Portable lifting-instrument bracket device |
| 06/22/2011 | CN201874544U Steam resistance control device in process of steam auxiliary gravity drainage (SAGD) |
| 06/22/2011 | CN201874463U Safety anti-deviation drilling tool with half-piece type centralizers |
| 06/22/2011 | CN201874462U Flexible pressurizing drilling tool capable of correcting and preventing deviation |
| 06/22/2011 | CN201874461U Anti-deviation straightening while-drilling composite drilling device |
| 06/22/2011 | CN201874460U One-trip drilling tool for directional well |
| 06/22/2011 | CN201874450U Outburst-prevention drilling machine used in coal mine |
| 06/22/2011 | CN102102538A Orifice data processing device for coal mine underground measurement while drilling |
| 06/22/2011 | CN102102512A Fully mechanized mining working face bending detection and straightening method and system |
| 06/22/2011 | CN102102511A Underground ultrasonic Doppler flow measurement device and measurement method |
| 06/22/2011 | CN102102510A Folding ultrasonic borehole imaging tool |
| 06/22/2011 | CN102102509A Method and device for testing semi-diameter of steam cavity of steam pouring well |
| 06/22/2011 | CN102102508A Wellhead assembling table for safety logging instrument |
| 06/22/2011 | CN101205806B Down-hole instrument high-speed single-core cable transmission device |
| 06/22/2011 | CN101201002B Long-range single-cord well logging bus control system |
| 06/21/2011 | US7963328 Process and apparatus for release and recovery of methane from methane hydrates |
| 06/21/2011 | US7963327 Method for dynamically assessing petroleum reservoir competency and increasing production and recovery through asymmetric analysis of performance metrics |
| 06/21/2011 | US7963323 Technique and apparatus to deploy a cement plug in a well |
| 06/21/2011 | CA2688937A1 A multi-step solvent extraction process for heavy oil reservoirs |
| 06/21/2011 | CA2653587C A system and method for estimating supercharge pressure and initial pressure of a formation |
| 06/21/2011 | CA2650990C System and method for monitoring a well by means of an optical fiber |
| 06/21/2011 | CA2648910C Drilling fluid flow diverter |
| 06/21/2011 | CA2615392C Method of compensating measurements made by a downhole survey instrument |
| 06/21/2011 | CA2601786C Method and apparatus for downlink communication |
| 06/21/2011 | CA2600233C Metal powder layered apparatus for downhole use |
| 06/21/2011 | CA2523463C Apparatus and methods for remote monitoring of flow conduits |
| 06/16/2011 | WO2011072135A2 Method and apparatus for borehole positioning |
| 06/16/2011 | WO2011072093A2 Method of determining end member concentrations |
| 06/16/2011 | WO2011072037A2 Bend insensitive optical fiber with improved hydrogen resistance |
| 06/16/2011 | WO2011071809A1 Apparatus and technique to communicate with a tubing-conveyed perforating gun |
| 06/16/2011 | WO2011071796A2 Method and apparatus to incorporated internal gradient and restricted diffusion in nmr inversion |
| 06/16/2011 | WO2011071651A1 Solvent surveillance in solvent-based heavy oil recovery processes |
| 06/16/2011 | WO2011071571A1 Optical sensor having a capillary tube and an optical fiber in the capillary tube |
| 06/16/2011 | WO2011071479A1 System and method for remote well monitoring |
| 06/16/2011 | WO2011070413A2 Processing of geological data |
| 06/16/2011 | WO2011070408A2 Electro-chemical sensor |
| 06/16/2011 | WO2011032133A3 Monitoring drilling performance in a sub-based unit |
| 06/16/2011 | WO2011031942A3 Drilling system for making lwd measurements ahead of the bit |
| 06/16/2011 | WO2011022220A3 Fiber optic gravel distribution position sensor system |
| 06/16/2011 | US20110141852 Air hammer optimization using acoustic telemetry |
| 06/16/2011 | US20110140907 Downhole communication |
| 06/16/2011 | US20110139508 Gauge pads, cutters, rotary components, and methods for directional drilling |
| 06/16/2011 | US20110139507 Method and Apparatus for Borehole Positioning |
| 06/16/2011 | US20110139449 Coiled Tubing Deployed Single Phase Fluid Sampling Apparatus and Method for Use of Same |
| 06/16/2011 | US20110139447 Method and apparatus for logging a well using a fiber optic line and sensors |
| 06/16/2011 | US20110139446 Method of Determining Queried Fluid Cuts Along a Tubular |
| 06/16/2011 | US20110139445 System and Method for Downhole Communication |
| 06/16/2011 | US20110139444 Drainage of heavy oil reservoir via horizontal wellbore |
| 06/16/2011 | US20110139443 Monitoring fluid movement in a formation |
| 06/16/2011 | US20110139442 Method of determining end member concentrations |
| 06/16/2011 | US20110139441 System, apparatus and method for stimulating wells and managing a natural resource reservoir |
| 06/16/2011 | US20110138903 Folding ultrasonic borehole imaging tool |
| 06/16/2011 | DE102008001439B4 Vorrichtung und Verfahren zur Durchführung einer azimutalen Prüfung von in Bohrlöchern eingebauten Ringraumabdichtungen auf vorhandene Hohlräume, Kanäle und Strömungen Apparatus and method for performing an azimuthal examination of built-in wells annulus seals on existing cavities, channels and currents |
| 06/16/2011 | CA2783289A1 Method and apparatus for borehole positioning |
| 06/16/2011 | CA2783228A1 Bend insensitive optical fiber with improved hydrogen resistance |
| 06/15/2011 | EP2333233A2 Wellhead test tool and method |