| Patents for E21B 47 - Survey of boreholes or wells (31,352) |
|---|
| 06/11/2008 | CN101196113A Single-emitting five-receiving sonic system virtual two-emitting five-receiving sonic system method |
| 06/11/2008 | CN101196112A Reducing cable belt pressing well lowering conveyer |
| 06/11/2008 | CN101196111A Adjustable power measuring suite for creep grinding device |
| 06/11/2008 | CN101196101A Adjustable multifunctional creep grinding device of power measuring suite |
| 06/11/2008 | CN100393980C Device for exploiting liquid underground and data transmission device using in the same |
| 06/10/2008 | US7385523 Apparatus and method for downhole well equipment and process management, identification, and operation |
| 06/10/2008 | US7385400 Azimuthally sensitive receiver array for an electromagnetic measurement tool |
| 06/10/2008 | US7383883 Apparatus and method to detect a signal associated with a component |
| 06/10/2008 | US7383882 Interactive and/or secure activation of a tool |
| 06/10/2008 | US7383876 Cutting tool for use in a wellbore tubular |
| 06/10/2008 | CA2407452C Apparatus and method for locating joints in coiled tubing operations |
| 06/10/2008 | CA2397409C Downhole densitometer |
| 06/05/2008 | WO2008066986A2 Wireless perforating gun |
| 06/05/2008 | WO2008066414A2 System for measuring the productivity of a group of wells with a single flow meter |
| 06/05/2008 | WO2008066413A1 Well jet device on a flexible smooth pipe for examining horizontal wells |
| 06/05/2008 | WO2008066412A1 Well jet device logging and testing horizontal wells |
| 06/05/2008 | WO2008066391A1 An apparatus for autonomous downhole logging and wireless signal transport and a method for gathering well data |
| 06/05/2008 | WO2007098221A3 A method and apparatus for ion-selective discriminaion of fluids downhole |
| 06/05/2008 | WO2007095112A3 Decision feedback equalization in mud-pulse telemetry |
| 06/05/2008 | WO2006059197A8 Sonde attachment means |
| 06/05/2008 | US20080133193 Methods for estimating properties of a subterranean formation and/or a fracture therein |
| 06/05/2008 | US20080130412 Method and apparatus for acoustic data transmission in a subterranean well |
| 06/05/2008 | US20080130409 Method of Generating Directional Low Frequency Acoustic Signals and Reflected Signal Detection Enhancements for Seismic While Drilling Applications |
| 06/05/2008 | US20080129299 Position and Orientation Locator/Monitor |
| 06/05/2008 | US20080128171 Closed Loop Control Bore Hole Drilling System |
| 06/05/2008 | US20080128126 Downhole Tool System and Method for Use of Same |
| 06/05/2008 | US20080128123 Downhole power source |
| 06/05/2008 | CA2613604A1 Multi-carrier transmission process and system in a difficult environment with optimisation of emission power |
| 06/04/2008 | EP1926988A1 Electro-chemical sensor |
| 06/04/2008 | EP1926886A1 Apparatus and method for continuous measurement of a physical property of a drilling fluid |
| 06/04/2008 | EP1646765B1 Electrical imaging in conductive and non-conductive mud |
| 06/04/2008 | CN201068796Y Closed type pressure sensor |
| 06/04/2008 | CN201068795Y Wellhead pressure test device |
| 06/04/2008 | CN201068794Y Down-hole data wireless exchange set |
| 06/04/2008 | CN201068793Y Large wellbore magnetic positioning logging tool |
| 06/04/2008 | CN101191414A Down hole forward vision sound wave dynamic digital deflection focalizing imaging method |
| 06/04/2008 | CN101191413A High speed transmission method for down hole digital television data and transmission system thereof |
| 06/04/2008 | CN100392208C Declinator used inertia measurement set integration device and error eliminating method |
| 06/04/2008 | CN100392207C Method for predicting drilling system performance for given formation and its system |
| 06/04/2008 | CA2838115A1 Method and apparatus for acoustic data transmission in a subterranean well |
| 06/04/2008 | CA2729349A1 Method and apparatus for acoustic data transmission in a subterranean well |
| 06/04/2008 | CA2612339A1 Methods and systems for compressing sonic log data |
| 06/03/2008 | US7382686 Drilling signalling system |
| 06/03/2008 | US7382136 Shielded apparatus for reducing an electrical field generated by a pad during electrically exploring geological formations |
| 06/03/2008 | US7380616 Automatic downlink system |
| 06/03/2008 | US7380598 Method for detecting fluid leakage from a subterranean formation |
| 06/03/2008 | US7380597 Deployment of underground sensors |
| 05/29/2008 | WO2008064034A2 Cement bond analysis |
| 05/29/2008 | WO2008007324A3 Methods and systems for monitoring fluid placement during stimulation treatments |
| 05/29/2008 | WO2007145859A3 Electromagnetically determining the relative location of a drill bit using a solenoid source installed on a steel casing |
| 05/29/2008 | WO2007072173B1 Method and system for monitoring the incursion of particulate material into a well casing within hydrocarbon bearing formations including gas hydrates |
| 05/29/2008 | US20080126383 System and method for predicting compatibility of fluids with metals |
| 05/29/2008 | US20080123470 Gas minimization in riser for well control event |
| 05/29/2008 | US20080121431 Establishing Positions of Locating Field Detectors and Path Mapping in Underground Boring Tool Applications |
| 05/29/2008 | US20080121430 Configurable Beacon And Method |
| 05/29/2008 | US20080121399 Method and system for accessing subterranean deposits from the surface |
| 05/29/2008 | US20080121392 Closed loop multiphase underbalanced drilling process |
| 05/29/2008 | CA2611798A1 Oilfield apparatus comprising swellable elastomers having nanosensors therein and methods of using same in oilfield applications |
| 05/29/2008 | CA2610008A1 Method and system to display well properties information |
| 05/28/2008 | CN201065760Y Positioning type salvageable hanger |
| 05/28/2008 | CN201065759Y Annulus test pressure gauge rope socket for well testing |
| 05/28/2008 | CN201065755Y Continuous liquid-discharging device for exploration well testing for oil |
| 05/28/2008 | CN101187961A Output prediction system for emission hole complete well |
| 05/28/2008 | CN101187307A Optical fiber multi-point temperature and pressure measuring method for intelligent well and the device therefor |
| 05/28/2008 | CN100390569C Multi-pole transmitter source |
| 05/27/2008 | US7379819 Reservoir sample chain-of-custody |
| 05/27/2008 | US7378985 Communication system for down hole use |
| 05/27/2008 | US7377333 Linear position sensor for downhole tools and method of use |
| 05/27/2008 | US7377317 Apparatus and methods for logging a well borehole with controllable rotating instrumentation |
| 05/27/2008 | US7377169 Apparatus and methods for acoustically determining fluid properties while sampling |
| 05/27/2008 | CA2469574C Improved transmission element for downhole drilling components |
| 05/27/2008 | CA2463262C Method and device for acoustic signal transmission in a drillstring |
| 05/22/2008 | WO2008060769A2 Providing a sensor array |
| 05/22/2008 | WO2008059262A1 High pressure resonant vibrating-tube densitometer |
| 05/22/2008 | WO2008032194A3 Methods and systems for wellhole logging utilizing radio frequency communication |
| 05/22/2008 | WO2007095103A3 Channel equalization for mud-pulse telemetry |
| 05/22/2008 | US20080120036 Well Characterisation Method |
| 05/22/2008 | US20080115934 Multi-Zone Formation Evaluation Systems and Methods |
| 05/22/2008 | US20080115932 Method and apparatus for delayed flow or pressure change in wells |
| 05/22/2008 | US20080115931 Expandable Tubular |
| 05/22/2008 | US20080115574 Apparatus and Methods to Perform Downhole Measurements associated with Subterranean Formation Evaluation |
| 05/22/2008 | CA2781625A1 Rotating fluid measurement device and method |
| 05/22/2008 | CA2667638A1 High pressure resonant vibrating-tube densitometer |
| 05/22/2008 | CA2667498A1 Rotating fluid measurement device and method |
| 05/21/2008 | EP1923535A1 Downhole check valve comprising a burst disk |
| 05/21/2008 | EP1922663A2 Well modeling associated with extraction of hydrocarbons from subsurface formations |
| 05/21/2008 | EP1922571A1 Downhole navigation and detection system |
| 05/21/2008 | CN201063586Y Petroleum logging telegauge cable transmission driving thick film circuit |
| 05/21/2008 | CN201062515Y Intelligent synchronous seal-checking and flow metering and adjusting instrument |
| 05/21/2008 | CN201062514Y Azimuth pup joint connecting device |
| 05/21/2008 | CN201062513Y Electronic self-floating multi-point measuring instrument |
| 05/21/2008 | CN201062512Y Dipmeter calibration device |
| 05/21/2008 | CN101184905A Method for detecting fluid leakage from a subterranean formation |
| 05/21/2008 | CN101182769A Reservoir sample chain-of-custody |
| 05/21/2008 | CN101182768A Ultra-thick oil down-hole temperature, pressure double parameter (multi-point) dynamic measurement system |
| 05/21/2008 | CN101182767A Down-hole boring tool (drill) tacheometry method and short node for down-hole tacheometry |
| 05/21/2008 | CN101182766A Measurement method of down-hole boring tool (drill) rotative velocity and direction and short node |
| 05/21/2008 | CA2594950A1 Apparatus and methods to perform downhole measurements associated with subterranean formation evaluation |
| 05/20/2008 | US7373993 System and method for locating and tracking a boring tool |
| 05/20/2008 | US7373976 Well production optimizing system |