Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 47 - Survey of boreholes or wells
Patents for E21B 47 - Survey of boreholes or wells (31,352)
06/2010
06/03/2010WO2010025315A3 System and method for measuring formation temperature and/or pressure using nuclear quadrupole resonance
06/03/2010US20100138158 Method and apparatus for testing swellable materials
06/03/2010US20100135117 Downhole Timing Recovery and Signal Detection
06/03/2010US20100135116 Miner acoustic communication and location system
06/03/2010US20100133009 Constant-Mode Auto-Drill with Pressure Derivative Control
06/03/2010US20100133008 Monitor and control of directional drilling operations and simulations
06/03/2010US20100133006 Downhole communication devices and methods of use
06/03/2010US20100133004 System and Method for Verifying Perforating Gun Status Prior to Perforating a Wellbore
06/03/2010US20100132955 Method and system for deploying sensors in a well bore using a latch and mating element
06/03/2010US20100132953 Barrier for instrumentation piping
06/03/2010US20100132940 Focused probe apparatus and method therefor
06/03/2010US20100132434 Interchangeable measurement housings
06/03/2010CA2744193A1 Method for estimation of sagd process characteristics
06/03/2010CA2686290A1 System and method for verifying perforating gun status prior to perforating a wellbore
06/02/2010EP2192263A1 Method for monitoring cement plugs
06/02/2010EP2191102A2 Down-hole wireless communication system
06/02/2010CN201496065U Snubbing unit for horizontal well test system
06/02/2010CN201496064U Line passing device of logging instrument transition line
06/02/2010CN201496063U Underground drilling-hole trail tracker
06/02/2010CN201496062U Remote measuring device of indicator diagram for oil well
06/02/2010CN201496061U Electrode series simulation scale box
06/02/2010CN201496060U Cementing imaging log tool transducer
06/02/2010CN201496059U Gas-liquid separation type well surveying device
06/02/2010CN201496058U Gsm oil well monitoring device
06/02/2010CN201495982U Performance testing system of top driving drilling unit
06/02/2010CN101719612A Docking assembly between rotating and static signal cables in borehole inclinometer
06/02/2010CN101718195A Slurry pulse generator
06/02/2010CN101718194A Cap-type measuring line falling protector
06/02/2010CN101718171A Matching method of well completion of laterally-drilling horizontal well
06/02/2010CN101291050B Electric cable winding/paying off device, down-hole information transmission apparatus and method
06/02/2010CN101100939B Depth tracking device for logging while drilling
06/01/2010US7728595 Multi-frequency in-ground locating signal frequency code identification and apparatus
06/01/2010CA2584531C Linear displacement measurement method and apparatus
06/01/2010CA2512485C Tool for measuring perforation tunnel depth
06/01/2010CA2485810C System and method to control multiple tools through one control line
05/2010
05/28/2010CA2685688A1 Improved downhole timing recovery and signal detection
05/27/2010WO2010060014A2 Non-azimuthal and azimuthal formation evaluation measurement in a slowly rotating housing
05/27/2010WO2010059621A2 Method and apparatus for calibrating and correcting for coherent noise in casing detection
05/27/2010WO2010059263A1 Systems and methods for well positioning using a transverse rotating magnetic source
05/27/2010WO2010058033A1 Method and system for fixing an element in a borehole
05/27/2010WO2010057437A1 Method and system of data transmission in a wellbore
05/27/2010WO2010039357A3 Logging tool with antennas having equal tilt angles
05/27/2010WO2010030190A3 Deep water well intervention system
05/27/2010WO2010019863A3 System and method for evaluation of structure-born sound
05/27/2010WO2009033146A3 Mud pulse telemetry system
05/27/2010US20100126727 In situ recovery from a hydrocarbon containing formation
05/27/2010US20100126718 Cement evaluation method and tool
05/27/2010US20100126717 Instrumented formation tester for injecting and monitoring of fluids
05/27/2010US20100126711 Downhole modulator apparatus
05/27/2010CA2743716A1 Method and system for fixing an element in a borehole
05/26/2010EP2189623A2 Generation of a pressure pulse of known magnitude
05/26/2010EP2188492A1 Transducer assemblies for subsurface logging use
05/26/2010EP2188489A1 Method and apparatus for fluid loss measurements of wellbore fluids
05/26/2010CN201486548U Short section connecting structure of measurement-while-drilling instrument
05/26/2010CN201486547U Movable prospecting well metering device
05/26/2010CN201486546U Mining stress monitoring system
05/26/2010CN201486545U Underground vibration measuring instrument
05/26/2010CN201486544U Movable heavy hammer
05/26/2010CN201486543U Oil field single-well remote alarm and monitoring apparatus
05/26/2010CN201486504U Wellhead blanking plug of oil well
05/26/2010CN1715955B Method of seismic source monitoring using modeled source signatures with calibration functions
05/26/2010CN1711405B Downhole hydraulic control line connector
05/26/2010CN101713650A Fiber bragg grating inclinometer and inclinometry algorithm
05/26/2010CN101713289A Lead recovering type deep-well unpowered data transmission device
05/26/2010CN101713288A Measuring instrument for distance between adjacent wells by electromagnetic detection while drilling
05/26/2010CN101713287A Magnetic short section used for measuring distance between adjacent wells by electromagnetic detection while drilling
05/26/2010CN101713286A Electromagnetic system for detecting distance between adjacent wells while drilling
05/26/2010CN101054896B Eight-arm mechanical pusher
05/26/2010CN101054893B Dissection type packer
05/25/2010US7725301 System and method for estimating multi-phase fluid rates in a subterranean well
05/25/2010US7721816 Drilling/bolting machine having a manual operator input device with enable switch and related methods
05/25/2010US7721802 Fluid level sensing device and methods of using same
05/25/2010US7721800 Flow control mechanism for a downhole tool
05/25/2010US7721596 Apparatus and method to monitor slurries for waste re-injection
05/25/2010US7721595 Apparatus and method to monitor slurries for waste re-injection
05/25/2010US7721594 Apparatus and method to monitor slurries for waste re-injection
05/25/2010CA2586828C Logging tool sonde sleeve
05/25/2010CA2527063C Running/retrieval tool
05/25/2010CA2496144C Pressure sensor assembly suitable for use in harsh environments
05/25/2010CA2470305C Well twinning techniques in borehole surveying
05/25/2010CA2445703C Monitoring a microseismic event
05/25/2010CA2279654C High resistance grounding systems for oil well electrical systems
05/20/2010WO2010057070A2 Method of deep resistivity transient measurment while drilling
05/20/2010WO2010057055A2 Downhole instrument calibration during formation survey
05/20/2010WO2010019798A3 Bottom hole assembly configuration management
05/20/2010WO2009146895A3 Drill head
05/20/2010WO2009136229A3 Technique and apparatus to deploy a cement plug in a well
05/20/2010WO2009092919A3 Permanent seismic source
05/20/2010WO2009019550A3 Method and apparatus for downlink communication using dynamic threshold values for detecting transmitted signals
05/20/2010US20100122847 Methods for visualizing distances between wellbore and formation boundaries
05/20/2010US20100122813 Method of Placing Ball Sealers For Fluid Diversion
05/20/2010US20100122812 Single Packer Structure With Sensors
05/20/2010CA2738824A1 Method and tool for determination of fracture geometry in subterranean formations based on in-situ neutron activation analysis
05/19/2010EP2185793A1 System and method for sensing pressure using an inductive element
05/19/2010CN201474689U Stress wave short transmission data receiving device
05/19/2010CN201474688U Integrated drilling instrument
05/19/2010CN201474687U Oil field station remote monitoring device
05/19/2010CN201474686U Small workover well automatic perfusion measuring device
05/19/2010CN201474666U Underground ball throwing control switch valve
05/19/2010CN1970991B Method for metering oil production yield and analyzing and optimizing operating condition of oil well, and system thereof
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