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Survey of boreholes or wells
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Industry
CPC
E21B47/00
This industry / category may be too specific. Please go to a parent level for more data
Parent Industries
E
FIXED CONSTRUCTIONS
E21
Mining
E21B
EARTH DRILLING
Current Industry
E21B47/00
Survey of boreholes or wells
Sub Industries
E21B47/0001
for underwater installations
E21B47/0002
Survey of boreholes or wells by visual inspection
E21B47/0003
Determining well or borehole volumes
E21B47/0005
control of cementation quality or level
E21B47/0006
Measuring stresses in a well bore pipe string or casing
E21B47/0007
Survey of down-hole pump systems
E21B47/0008
Survey of walking-beam pump systems
E21B47/01
Devices for supporting measuring instruments on a drill pipe, rod or wireline; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
E21B47/011
Protecting measuring instruments
E21B47/02
Determining slope or direction
E21B47/022
of the borehole
E21B47/02208
using seismic or acoustic means
E21B47/02216
using at least one source of electromagnetic energy and at least one detector therefor
E21B47/02224
at least one of the sources or one of the detectors being located above ground
E21B47/02232
using a pendulum
E21B47/024
of devices in the borehole
E21B47/026
of penetrated ground layers
E21B47/04
Measuring depth or liquid level
E21B47/042
Measuring or locating liquid level
E21B47/044
using radioactive markers
E21B47/06
Measuring temperature or pressure
E21B47/065
Measuring temperature
E21B47/08
Measuring the diameter
E21B47/082
using radiant means
E21B47/09
Locating or determining the position of objects in boreholes or wells
E21B47/0905
by detecting magnetic anomalies
E21B47/091
by detecting an acoustic anomaly
E21B47/0915
using impression packers
E21B47/10
Locating fluid leaks, intrusions or movements
E21B47/1005
using thermal measurements
E21B47/101
using acoustic energy
E21B47/1015
using tracers: using radioactivity
E21B47/102
using electrical indications: using light radiations
E21B47/1025
Detecting leaks
E21B47/12
Means for transmitting measuring-signals or control signals from the well to the surface or from the surface to the well
E21B47/121
using earth as an electrical conductor
E21B47/122
by electromagnetic energy
E21B47/123
using light waves
E21B47/124
Storing data down-hole
E21B47/14
using acoustic waves
E21B47/16
through the drill string or casing
E21B47/18
through the well fluid
E21B47/182
by continuous mud waves with modulation of the waves
E21B47/185
by negative mud pulses using a pressure relieve valve between drill pipe and annulus
E21B47/187
by positive mud pulses using a flow restricting valve within the drill pipe
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