E21B 47 - Survey of boreholes or wells

Patents for E21B 47 - Survey of boreholes or wells (31,352)
10/2002
10/23/2002	EP1250514A1 Downhole wireless two-way telemetry system
10/23/2002	EP1250513A1 System and method for fluid flow optimization in a gas-lift oil well
10/23/2002	CN2517871Y Small diameter heat durable collector
10/22/2002	US6469637 Adjustable shear valve mud pulser and controls therefor
10/22/2002	US6469636 High-power well logging method and apparatus
10/22/2002	US6469635 Bore hole transmission system using impedance modulation
10/22/2002	US6467543 System and process for secondary hydrocarbon recovery
10/22/2002	US6467387 Apparatus and method for propelling a data sensing apparatus into a subsurface formation
10/22/2002	US6467341 Accelerometer caliper while drilling
10/22/2002	US6467340 Asphaltenes monitoring and control system
10/17/2002	WO2002082124A1 Method and apparatus for determining the high side of a drill string during gamma mwd operations and correlating gamma events therewith
10/17/2002	WO2002081865A1 Method for partially filling shafts in a permanently durable manner
10/17/2002	WO2002081860A1 Pump control method and apparatus
10/17/2002	WO2002057805A3 Method and system for monitoring smart structures utilizing distributed optical sensors
10/17/2002	WO2001095517A3 Far-end cross-talk cancellation for data transmission on multiple propagation modes
10/17/2002	US20020152030 Downhole sensing and flow control utilizing neural networks
10/17/2002	US20020149501 Casing mounted sensors, actuators and generators
10/17/2002	US20020149500 Casing mounted sensors, actuators and generators
10/17/2002	US20020149499 Casing mounted sensors, actuators and generators
10/17/2002	US20020149498 Reservoir monitoring through windowed casing joint
10/17/2002	US20020148648 Internal power source for downhole detection system
10/17/2002	US20020148647 Method and system for accessing subterranean deposits from the surface
10/17/2002	US20020148646 Adaptive filter prediction method and system for detecting drill bit failure and signaling surface operator
10/17/2002	US20020148644 Differential sensor measurement method and apparatus to detect a drill bit failure and signal surface operator
10/17/2002	US20020148617 Well reference apparatus and method
10/17/2002	US20020148613 Method and system for accessing subterranean deposits from the surface
10/17/2002	US20020148607 Zonal isolation tool with same trip pressure test
10/17/2002	US20020148605 Method and system for accessing subterranean deposits from the surface
10/17/2002	CA2439809A1 Method and apparatus for determining the high side of a drill string during gamma mwd operations and correlating gamma events therewith
10/16/2002	EP1248893A1 Integrated transmitter surveying while boring (swb) entrenching powering device for the continuation of a guided bore hole
10/16/2002	EP0988440B1 Control and monitoring system for chemical treatment of an oilfield well
10/16/2002	CN2516756Y Double-sealing-section device of water injection well tester
10/16/2002	CN1375037A System for enhancing fluid flow in a well
10/16/2002	CN1092745C Method and equipment for collecting stratigraphic data during well drilling
10/16/2002	CN1092743C Hole finding apparatus having integrated sensor and its method
10/15/2002	US6466513 Acoustic sensor assembly
10/15/2002	US6466020 Electromagnetic borehole surveying method
10/15/2002	US6464687 Implantable drug delivery system
10/15/2002	US6464021 Equi-pressure geosteering
10/15/2002	US6464011 Production well telemetry system and method
10/10/2002	WO2002038909A3 Mean strain ratio analysis method and system for detecting drill bit failure and signaling surface operator
10/10/2002	US20020147574 Method of predicting the on-set of formation solid production in high-rate perforated and open hole gas wells
10/10/2002	US20020145423 Magnetically activated well tool
10/10/2002	US20020144842 System and method for signalling downhole conditions to surface
10/10/2002	US20020144821 Apparatus and system control fot the removal of fluids and gas from a well
10/10/2002	US20020144545 Method and apparatus for analyzing casing wear and retrieval of metallic fragments
10/10/2002	US20020144417 Surveying of boreholes
10/09/2002	EP1246993A1 Three dimensional steerable system
10/08/2002	US6462672 Data acquisition apparatus
10/08/2002	US6460630 Method and rock drilling apparatus for controlling rock drilling
10/08/2002	US6460621 Light-intervention subsea tree system
10/03/2002	WO2002077413A1 Very high data rate telemetry system for use in a wellbore
10/03/2002	WO2002059458A3 Instrumented cementing plug and system
10/03/2002	WO2002057590A3 Backreamer
10/03/2002	WO2002044760A3 Rib-mounted logging-while-drilling (lwd) sensors
10/03/2002	WO2001004661A3 Downhole sensing apparatus with separable elements
10/03/2002	US20020140573 Pressure impulse telemetry apparatus and method
10/03/2002	US20020140572 Very high data rate telemetry system for use in a wellbore
10/03/2002	US20020140429 Boring technique using locate point measurements for boring tool depth prediction
10/03/2002	US20020139929 Methods and apparatus for determining precipitation onset pressure of asphaltenes
10/03/2002	US20020139581 Mean strain ratio analysis method and system for detecting drill bit failure and signaling surface operator
10/03/2002	US20020139527 Tubing elongation correction system & methods
10/02/2002	EP1116350A4 Drill string telemetry with insulator between receiver and transmitter
10/02/2002	DE10113804A1 Vorrichtung zum Messen des Radius bzw.Durchmessers von Hohlräumen Apparatus for measuring the radius of cavities bzw.Durchmessers
10/02/2002	CN1372615A Data transmission in pipeline systems
10/01/2002	US6459992 Method and apparatus for determining logging tool displacements
10/01/2002	US6459383 Downhole inductively coupled digital electronic system
10/01/2002	US6459266 Sonde locator
10/01/2002	US6457538 Advanced coring apparatus and method
10/01/2002	US6457537 Mapping tool for tracking and/or guiding an underground boring tool
09/2002
09/26/2002	WO2002075164A2 Flexible joint for well logging instruments
09/26/2002	WO2002075113A1 Electromagnetic borehold surveying method
09/26/2002	WO2002038908A9 Differential sensor measurements to detect drill bit failure
09/26/2002	US20020135179 Low-loss inductive couplers for use in wired pipe strings
09/26/2002	US20020134587 Method, system and tool for reservoir evaluation and well testing during drilling operations
09/26/2002	US20020134546 Method and system for accessing subterranean deposits from the surface
09/26/2002	US20020133958 Continuous measurement-while-drilling surveying
09/26/2002	CA2441072A1 Flexible joint for well logging instruments
09/25/2002	EP1243751A1 Apparatus for measuring the radius or diameter of cavities
09/25/2002	CN2512907Y Large flux stratum detector
09/24/2002	US6456201 Method and apparatus for measuring groundwater levels
09/24/2002	US6455985 Pressure and temperature transducer
09/24/2002	US6454025 Apparatus for directional boring under mixed conditions
09/24/2002	US6454023 Mapping tool for tracking and/or guiding an underground boring tool
09/24/2002	US6454000 Cavity well positioning system and method
09/24/2002	US6453738 Method and apparatus for analyzing casing wear and retrieval of metallic fragments
09/19/2002	WO2002073004A1 Synchronous cdma telemetry system for use in a wellbore
09/19/2002	WO2002073003A1 Logging system for use in a wellbore
09/19/2002	WO2002072993A2 Hydraulically balanced reciprocating pulser valve for mud pulse telemetry
09/19/2002	US20020130663 Electromagnetic borehole surveying method
09/19/2002	US20020129945 Flexible joint for well logging instruments
09/18/2002	EP1240495A1 Improved method and apparatus for predicting the fluid characteristics in a well hole
09/18/2002	EP1240402A2 Technique for signal detection using adaptive filtering in mud pulse telemetry
09/18/2002	EP0836670B1 Method and system for logging mechanical parameters of formations crossed through by a borehole
09/17/2002	US6453239 Method and apparatus for borehole surveying
09/17/2002	US6450263 Remotely actuated rupture disk
09/17/2002	US6450259 Tubing elongation correction system & methods
09/17/2002	US6450258 Method and apparatus for improved communication in a wellbore utilizing acoustic signals
09/17/2002	US6450257 Monitoring fluid flow through a filter
09/17/2002	US6450255 Downhole flow control devices

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