Wireless remote liquid level detector and indicator for well testing
- Morgantown, WV
- Point Marion, PA
An acoustic system is provided for measuring the fluid level in oil, gas or water wells under pressure conditions that does not require an electrical link to the surface for level detection. A battery powered sound transmitter is integrated with a liquid sensor in the form of a conductivity probe, enclosed in a sealed housing which is lowered into a well by means of a wire line reel assembly. The sound transmitter generates an intense identifiable acoustic emission when the sensor contacts liquid in the well. The acoustic emissions propagate up the well which functions as a waveguide and are detected by an acoustic transducer. The output signal from the transducer is filtered to provide noise rejection outside of the acoustic signal spectrum. The filtered signal is used to indicate to an operator the liquid level in the well has been reached and the depth is read from a footage counter coupled with the wire line reel assembly at the instant the sound signal is received.
- Research Organization:
- National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Number(s):
- US 4523465
- OSTI ID:
- 865482
- Country of Publication:
- United States
- Language:
- English
Similar Records
Wireless remote liquid level detector and indicator for well testing
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Related Subjects
remote
liquid
level
detector
indicator
testing
acoustic
provided
measuring
fluid
oil
gas
water
pressure
conditions
require
electrical
link
surface
detection
battery
powered
sound
transmitter
integrated
sensor
form
conductivity
probe
enclosed
sealed
housing
lowered
means
wire
line
reel
assembly
generates
intense
identifiable
emission
contacts
emissions
propagate
functions
waveguide
detected
transducer
output
signal
filtered
provide
noise
rejection
outside
spectrum
indicate
operator
reached
depth
footage
counter
coupled
instant
received
battery power
acoustic transducer
pressure conditions
output signal
liquid level
acoustic emission
acoustic emissions
level detector
sealed housing
acoustic signal
filtered signal
fluid level
battery powered
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