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Telemetry & Control
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RTU
AIT 100
An antechamber is surface mounted on the flow tee immediately above the blowout preventer stack. Inside the antechamber, the Guided Wave Radar (GWR) probe emits an electronic signal that is reflected back when it hits the surface of the fluid or drilling mud as it rises to enter the return flow line. The amount of time between the emitted and reflected pulses indicates the level of the fluid in the flow tee. This number is shown as a digital readout on a highly visual display unit located on the rig floor. This same information can be transmitted into most drilling recorder units through a 4-20 mA current loop.
Adjustable user settable low and high limits are entered into the display unit and when the limits are exceeded audible and visual alarms are activated.
The AIT-100™ monitors the change in drilling fluid height and displays these changes as a number on a LED display unit located on the rig floor. The AIT-100™ can also be tied into most drilling recorder systems.
Features:
- Detects increased flow rate changes related to fluid level changes in the flow nipple or the flow tee.
- Detects diminished flow rates through descending fluid level in the flow nipple or flow tee.
- Isolates level changes instantly.
- Cross-references return flow with pump efficiency.
- Cross-references return flow with washed/failed drill string.
- Detects minute deviations in fluid levels to identify occurrence of slip stick.
- Detects diminished returns during cementing operations.
- Indicates undetected return flow during tripping operations.
- Indicates any change in fluid level while out of the hole.
- Indicates potential flow nipple or flow tee overflow on shallow drilling rigs.
- Provides detection on horizontal mud-return flow lines where mud tank and BOP height are similar.
- Allows increased height of mud tank system for shallow hole drilling rigs.
- Detects potential spills when oil or synthetic drilling fluids are used.
- Monitors the fluid output of the trip pump while tripping.
- When running full flow lines on shallow rigs, paddle sensors are stuck wide open and often cannot detect an increase in flow.
- Not affected by changes in velocity, density or the angle of the flow line.
- No float or moving parts.
- High accuracy level measurement.
- Safe and reliable environmental spill prevention.
- Straightforward installation.
- Highest quality, rugged, modular industrial design.
- CSA & NRTL/C Approved for hazardous area installations.
- Self cleaning probe.
- Excellent protection of electronics from moisture.
- Not affected by dielectric constant.
- Not affected by changes in liquid density.
- Excellent performance at low temperatures.
Applications:
- Designed for shallow drilling operations to replace paddle sensors.
- Works with the flow nipple on top of the BOP - observes the mud level right at the source.
- Can be used in horizontal drilling operations.
"It is better than the average flow-show because it works quite differently. This device does not work in the flow line, it works with the flow nipple on top of the BOP, it goes by the mud level right at the source"
"The main reason I am impressed is they are a combination tool, it can monitor the fluid, or output of the trip pump."
"You cannot tell what the hole is doing if you do not know where your mud is."
Ed Martin, Drilling Consultant - Anadarko Canada Corporation (50 years in the industry)