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)
06/2003
06/24/2003US6581685 Method for determining formation characteristics in a perforated wellbore
06/24/2003US6581680 Apparatus for mounting an electronic device for use in directional drilling
06/24/2003US6581454 Apparatus for measurement
06/24/2003US6581453 Method and apparatus for detecting and localizing unwanted matter internally in a pipe string
06/19/2003WO2003050390A1 Borehole equipment position detection system
06/19/2003WO2003050389A2 Apparatus and methods for downhole determination of characteristics of formation fluids
06/19/2003WO2003050385A2 Method and apparatus for completing a well
06/19/2003WO2003050376A2 Burst qam downhole telemetry system
06/19/2003US20030114987 Method for determining wellbore diameter by processing multiple sensor measurements
06/19/2003US20030112150 Production profile determination and modification system
06/19/2003US20030111796 Redundant metal-metal seal
06/19/2003US20030111270 Drill bit stabilizer
06/19/2003US20030111268 Underground boring machine employing navigation sensor and adjustable steering
06/19/2003CA2469168A1 Burst qam downhole telemetry system
06/18/2003EP1319800A1 Borehole equipment position detection system
06/18/2003EP1319799A1 Method and apparatus for completing a well
06/18/2003EP1319297A2 Methods and apparatus for interactive communications
06/18/2003CN1424485A Device and method for microscopic quantitatively processing dynamic color image for oil drive
06/17/2003US6580449 Borehole inspection instrument having a low voltage, low power fiber optic light-head
06/17/2003US6580268 Sucker rod dimension measurement and flaw detection system
06/17/2003US6578636 Horizontal directional drilling in wells
06/17/2003US6578634 Method of monitoring pumping operations of a service vehicle at a well site
06/17/2003US6578631 Well logging tool
06/13/2003CA2411603A1 Method for determining wellbore diameter by processing multiple sensor measurements
06/12/2003WO2003048510A1 Reverse section milling method and apparatus
06/12/2003US20030107367 Measuring device for detecting a body moving in relation to a tubular container
06/12/2003US20030106993 Apparatus and methods for downhole determination of characteristics of formation fluids
06/11/2003EP1248893A4 Integrated transmitter surveying while boring (swb) entrenching powering device for the continuation of a guided bore hole
06/11/2003CN2555397Y Testing tube column of eccentric pressure meter
06/11/2003CN2555396Y Multiarm micromagnet well temp sleeve loss detector
06/11/2003CN2555395Y Mechanical oil pipe inner diameter detector
06/11/2003CN1423031A Electronic pressure measuring apparatus for use in oil field hydraulic monitoring system
06/11/2003CN1423030A Method and apparatus for determining oil-layer characteristic
06/10/2003US6577954 Automated bore planning method and apparatus for horizontal directional drilling
06/10/2003US6577244 Method and apparatus for downhole signal communication and measurement through a metal tubular
06/10/2003US6575248 Fuel cell for downhole and subsea power systems
06/10/2003US6575243 Zonal isolation tool with same trip pressure test
06/10/2003US6575241 Downhole communication apparatus
06/10/2003US6575237 Hydraulic well control system
06/10/2003US6575025 Method and apparatus for measuring forces in the presence of external pressure
06/05/2003WO2003046333A2 Thermoacoustic electric power generation
06/05/2003WO2002039143A3 Method and apparatus for lwd shear velocity measurement
06/05/2003WO2002037072A3 Apparatus and method for formation testing while drilling using combined absolute and differential pressure measurement
06/05/2003US20030103551 Method of predicting formation temperature
06/05/2003US20030102980 Apparatus, system, and method for detecting and reimpressing electrical charge disturbances on a drill-pipe
06/05/2003US20030102868 Boring tool tracking/guiding system and method with unconstrained target location geometry
06/05/2003US20030102163 Method for determining sweep efficiency for removing cuttings from a borehole
06/05/2003US20030102130 In situ thermal recovery from a relatively permeable formation with quality control
06/05/2003US20030102126 In situ thermal recovery from a relatively permeable formation with controlled production rate
06/05/2003US20030102125 In situ thermal processing of a relatively permeable formation in a reducing environment
06/05/2003US20030102124 In situ thermal processing of a blending agent from a relatively permeable formation
06/05/2003US20030101822 Sensor apparatus
06/04/2003EP1316674A1 Protector for side-wall fluid tester
06/04/2003EP1316673A2 Method and system for accessing subterranean deposits from the surface
06/04/2003EP1315881A1 Method and system for perforating
06/04/2003EP1255912A4 Non-intrusive pressure measurement device for subsea well casing annuli
06/04/2003CN2554352Y Multi-safe petroleum well logging device
06/04/2003CN2554351Y Centering guide for over-annulus water witch flow-collecting umbrella
06/04/2003CN2554350Y Injection profile well wurveying instrument
06/04/2003CN2554349Y Rotating wellhead dewrapping device
06/03/2003US6571886 Method and apparatus for monitoring and recording of the operating condition of a downhole drill bit during drilling operations
05/2003
05/30/2003WO2003044320A1 Method and device for transferring data between an object moving in a well tubular and a remote station
05/29/2003US20030100451 Providing heat heat sources to at least one portion of the formation; allowing the heat to transfer from the one or more heat sources to a selected section of the formation; controlling the heat; producing a mixture from the formation
05/29/2003US20030098799 Wireless communication system and method
05/29/2003US20030098673 Power source regulator for wireline cable system
05/29/2003US20030098605 In situ thermal recovery from a relatively permeable formation
05/29/2003US20030098157 Electromagnetic telemetry actuated firing system for well perforating gun
05/29/2003US20030098156 Method and apparatus for determining reservoir characteristics
05/29/2003US20030098149 In situ thermal recovery from a relatively permeable formation using gas to increase mobility
05/29/2003US20030098064 Leak remedy through sealants in local reservoirs
05/28/2003EP1234101B1 Leak detection method
05/28/2003CN2553112Y Primary meter for electronic pressure-measuring device
05/28/2003CA2791214A1 Wireless communication system and method
05/28/2003CA2411819A1 Communicating with a tool
05/28/2003CA2411083A1 Wireless communication system and method
05/27/2003US6571046 Protector system for fiber optic system components in subsurface applications
05/27/2003US6568501 Receiver array using tubing conveyed packer elements
05/27/2003US6568481 Deep well instrumentation
05/27/2003US6568469 Method and apparatus for connecting a main well bore and a lateral branch
05/27/2003CA2114235C Communications protocol for well-logging digital telemetry system
05/22/2003WO2003042498A1 Optical position sensing for well control tools
05/22/2003WO2003042489A2 Method and apparatus for a monodiameter wellbore, monodiameter casing, monobore, and/or monowell
05/22/2003US20030094310 Three dimensional steerable system and method for steering bit to drill borehole
05/22/2003US20030094282 Downhole measurement apparatus and technique
05/22/2003US20030094281 Method and system for monitoring smart structures utilizing distributed optical sensors
05/21/2003EP1312750A2 Method and apparatus for selective horizontal well re-entry using retrievable diverter oriented by logging means
05/21/2003CN2551767Y Comprehensive logging apparatus regulator
05/20/2003US6567013 Digital hydraulic well control system
05/20/2003US6564883 Rib-mounted logging-while-drilling (LWD) sensors
05/20/2003US6564871 High pressure permanent packer
05/20/2003US6564619 Multiphase flow measurement system
05/15/2003WO2003041282A2 Passive two way borehole communication apparatus and method
05/15/2003WO2003040762A1 Relative drill bit direction measurement
05/15/2003WO2003040522A1 Gel release device
05/15/2003WO2003040517A1 Docking station assembly and methods for its use in a wellbore
05/15/2003WO2003040513A2 In situ thermal processing of a hydrocarbon containing formation
05/15/2003US20030090390 Method and system for performing operations and for improving production in wells
05/14/2003EP1310631A2 Apparatus and method for locating a fluid interface
05/14/2003EP1309888A1 Apparatus and method for synchronized formation measurement
05/14/2003CN2550503Y Mechanical connection hoop
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