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)
11/2012
11/15/2012DE112010004901T5 Mehrstufiges Lösungsmittel-Gewinnungsverfahren für Schweröl- Lagerstätten Multi-stage solvent extraction process for heavy oil deposits
11/14/2012EP2523357A1 Subsea data communication system and method
11/14/2012CN202533118U Intelligent multiphase flow measurement system
11/14/2012CN202531161U Locating device for layered water injection with small clamping distance
11/14/2012CN202531160U Downhole intelligent storage type pressure gauge of oil-water well
11/14/2012CN202531159U Hydraulic blow-out preventer field pressure testing device
11/14/2012CN202531158U Anti-freezing joint of pressure gauge
11/14/2012CN202531157U Liquid level automatic alarm of oil-water well
11/14/2012CN202531156U X-ray rapid detecting system for vertical shaft pipeline
11/14/2012CN202531155U Oil well yield metering device
11/14/2012CN202531154U Rapid pressure oil device of separator of metering station
11/14/2012CN202531153U Coal bed gas well choosing device
11/14/2012CN202531152U On-line metering system for separation of oil, water and gas
11/14/2012CN202531149U Three-pipe thermal recovery well head device shell
11/14/2012CN202531143U Digital type underground separated layer water injection measurement and adjustment technological tubular column
11/14/2012CN202531137U Automatic measuring, regulating and monitoring separated layer injection water distributor
11/14/2012CN202531136U Automatic measuring-adjusting and monitoring separate injection system for water injection well
11/14/2012CN202531134U One-dimensional physical simulation experiment system for top injection air and gravity auxiliary drive oil production
11/14/2012CN202531082U Eccentric test wellhead device with annual circulation groove
11/14/2012CN102782251A Estimation of reservoir permeability
11/14/2012CN102782250A Magnetic ranging system for controlling a drilling process
11/14/2012CN102777172A Measurement-while-drilling mud pulser and method for controlling same
11/14/2012CN102777171A Sound wave signal while drilling receiving device
11/14/2012CN102777170A Electromagnetic wave transmission method of information of logging instruments
11/14/2012CN102777169A Gas pressure depression angle measuring method and system
11/14/2012CN102777168A Monitoring hydrocarbon fluid flow
11/14/2012CN102777167A Two-dimensional rational extrusion oil gas transporting poly-graphic physical simulation device
11/14/2012CN102777166A Scale device for multi-component induction logger
11/14/2012CN102777165A Detection and control device for underreaming bits
11/14/2012CN102777158A Testing and adjusting linkage system and operating process thereof
11/14/2012CN102086755B Continuous oil pipe-based guide high-pressure jet drilling system
11/14/2012CN101881157B Sound wave well logging transducer
11/14/2012CN101871344B Weighing method for determining liquid level in wellbore of gas well
11/14/2012CN101832127B Permanent pressure meter testing method for coal bed gas observation well
11/14/2012CN101737009B Geometry steerable drilling system driven by liquid and gas phase drilling media rotary disc
11/14/2012CN101514625B Method for detecting sand production rate in the process of thick oil exploitation in oil field and device
11/14/2012CN101408103B Method and apparatus for monitoring states of oil extraction and oil transportation of oil field
11/14/2012CN101403297B Direct-reading type oil well delamination pressure gauge
11/13/2012US8308199 Electrical isolation connector for electromagnetic gap sub
11/13/2012US8307895 Imaging apparatus and methods of making and using same
11/13/2012US8307893 Method of improving waterflood performance using barrier fractures and inflow control devices
11/13/2012US8307703 Interchangeable measurement housings
11/13/2012CA2676377C Apparatus and method for clock shift correction for measurement-while-drilling measurements
11/13/2012CA2577811C Joint source-channel coding for multi-carrier modulation
11/13/2012CA2521151C Apparatus and methods for conveying and operating analytical instrumentation within a well borehole
11/11/2012CA2776070A1 Method for detecting hydrocarbon zones in a geological formation
11/08/2012WO2012150983A2 Detection of static tip resistance of a pile
11/08/2012WO2012150463A1 Integrity monitoring of conduits
11/08/2012WO2012118891A3 Methods and apparatuses for synchronization of downhole tool with remote transmitters and sensors
11/08/2012WO2012109352A3 Three-dimensional modeling of parameters for oilfield drilling
11/08/2012WO2012097295A3 Rotational test valve with tension reset
11/08/2012WO2012054635A3 Monitoring using distributed acoustic sensing (das) technology
11/08/2012US20120283966 Hydraulic Signature Tester
11/08/2012US20120279783 Apparatus and Method for Drilling Wellbores Based on Mechanical Specific Energy Determined from Bit-Based Weight and Torque Sensors
11/08/2012US20120279782 Laser alignment device for use with a drill rig
11/08/2012US20120279702 Formation Testing
11/08/2012US20120279292 Flow measurements in an oil reservoir
11/08/2012US20120279076 Inclination Measurement Devices and Methods of Use
11/08/2012CA2834313A1 Integrity monitoring of conduits
11/07/2012EP2519845A2 Calibration method for a microresistivity logging tool
11/07/2012EP2519843A2 Use of general bayesian networks in oilfield operations
11/07/2012EP2519841A2 Logging tool employing a monopole current injection electrode for microresistivity imaging
11/07/2012EP2519840A2 Microresistivity anisotropy logging tool employing a monopole current injection electrode
11/07/2012EP2519711A1 Downhole data transmission system
11/07/2012EP2519710A2 Wireless network discovery algorithm and system
11/07/2012EP2519709A2 Look ahead advance formation evaluation tool
11/07/2012CN202520306U Positive pulse device for mud under well
11/07/2012CN202520305U Survey and drilling data collecting and transmitting device for power tunnel
11/07/2012CN202520304U Integral structure of plug type pressure gauge double-channel sensor
11/07/2012CN202520303U Automatic digital signal detector for times of stroke of petroleum pumping unit
11/07/2012CN202520302U Underwater wellhead system load test device
11/07/2012CN202520301U Dynamic simulation experiment device for horizontal well drilling column
11/07/2012CN202520300U Device for measuring water in oil and water separation
11/07/2012CN202520299U Oil metering device in oil-water separation
11/07/2012CN202520298U Anti-explosive single well meter for oil well
11/07/2012CN102767367A High-resolution lateral logger and resistivity-measuring method
11/07/2012CN102767366A High-resolution orientation resistivity side direction logging instrument and logging method
11/07/2012CN102767365A High-resolution direction resistivity dual lateral logging tool and resistivity measuring method
11/07/2012CN102767364A High-resolution dual-side-direction logging instrument and resistivity measurement method
11/07/2012CN102767363A Electric communication drill rod and method for increasing transmission distance of electromagnetic wave measurement while drilling signal
11/07/2012CN102767362A Depth-detecting device for rotary drilling rig and rotary drilling rig with same
11/07/2012CN102767361A Intelligent hydraulic cable hanger device and working method
11/07/2012CN102767360A Underground detector for measuring acousto-electric effects
11/07/2012CN102767359A Three-phase flow measurement device for volume accumulation type low-yield liquid oil well
11/07/2012CN101936156B Self-expanding packer borehole simulation test device
11/07/2012CN101892842B Method for uncovering coal in vertical shaft
11/07/2012CN101853309B Log data format automatic identification and conversion method based on database
11/07/2012CN101832125B Remotely updating device of EDIB (Electronic Data Interchange Bus) based down-hole program
11/07/2012CN101818642B Sound-producing device for measuring oil well liquid level depth
11/07/2012CN101781986B Method and device for transmitting and analyzing numerical flow of curve data in logging system
11/07/2012CN101655404B Optical hydraulic detection device and method
11/07/2012CN101133232B Heating and cooling electrical components in a downhole operation
11/06/2012US8305228 Method and apparatus for locating a plug within the well
11/06/2012US8305083 Calibration method for a microresistivity logging tool
11/06/2012US8302697 Installation of tubular strings with lines secured thereto in subterranean wells
11/06/2012US8302687 Apparatus for measuring streaming potentials and determining earth formation characteristics
11/06/2012US8302686 Use of micro-electro-mechanical systems (MEMS) in well treatments
11/06/2012US8302685 Mud pulse telemetry data modulation technique
11/06/2012CA2690634C Wired pipe with wireless joint transceiver
11/06/2012CA2521033C Drifting tubing
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