AD250 Wireless

Acoustic Telemetry System

  • Industry-leading acoustic technology for long term reservoir monitoring
  • Robust and reliable world leader in cost effective retrofit applications
  • Hand carried, pre-programmed, and pre-mounted – using no incremental rig time
  • No wellhead penetrations, cranes, cables or connectors required
  • No specialized software needed to view data – .CSV file export
  • Fastest data rate of any wireless technology in the industry

SYSTEM OVERVIEW

The AD250 Wireless System is the next generation acoustic telemetry system that measures wellbore pressure, temperature, and vibration in real-time, a mandatory requirement for good reservoir management in oil & gas wells, and for monitoring artificial lift systems. The AD250 Command+Control self-tuning duplex communication technology can also be used for remote activation and control of third-party downhole tools such as electronic TCP firing heads, downhole valves, fluid samplers, and sliding sleeves.

Our AD250 Wireless Downhole Gauge System packages are ideal for drill stem testing (DST), well testing, artificial lift, free-flow, and observation wells to unlimited depth. The wireless gauges and repeaters can be run on the tubing or retrofitted via slickline with our proprietary Barracuda HEX Gauge Hanger. Both gauges and repeaters have onboard sensors that enable the technology to monitor multiple zones and report local P&T data for flowing gradients. The technology requires no cables, no wellhead penetrations, and no cranes or trucks as the entire system can be hand carried to well site. Installation can be carried out offline requiring no rig time, and no additional third party tools such as spoolers.

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HOW IT WORKS

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  1. Wellbore pressure is measured as required by an industry standard pressure transducer.
  2. The measurement is converted into encoded acoustic data and wirelessly sent to surface as a vibration inside the wall of the steel tubing.
  3. At the wellhead the encoded acoustic data is picked up by an accelerometer magnetically attached to the tubing hanger flange, and sent to the decoder.
  4. The decoder extracts the pressure and temperature data, time stamps and writes P&T record to memory.
  5. You can read and scroll through data directly on the LED screen, download data from the SD memory card, or the decoder can be connected to LAN by Ethernet port, or via SCADA or by 3G, WIFI and Satellite via Modbus (RS485).

APPLICATIONS



GAUGE
SPECIFICATIONS


WIRELESS DOWNHOLE PRESSURE GAUGE
Transmission DistanceUnlimited
Transmission FrequencyAs fast as 45 seconds
CommunicationDuplex Capability
Data Stored to MemoryEvery second
Length1300mm
Diameter33.4mm
Pressure Rating10,000psi
Temperature Rating-20 to 125°C
Housing MaterialSuper Duplex (UNS S32760) or Inconel
Pressure Accuracy<0.05% Full Scale (Calibrated 0 to 125°C)
Pressure Resolution0.01psi
Temp Accuracy+/- 0.5°C
Temp Resolution0.01°C
Gauge Stability0.02% FSD/year
Onboard Memory32MB
Data Sets Stored>250,000
BatteryUp to 7 years

PRODUCTION MONITORING

AD250 vs Echo-Meter Shots
The above graph compares the actual wellbore pressure with the ‘scattered’ wellbore pressures estimated by echo-meter shots.

WELL TESTING

PBU & Derivative Plot
After dewatering, the client was able to routinely perform and monitor wellbore pressure buildups in real-time.

AD250 WIRELESS

SOLAR POWER - SCADA - WIFI - 3G COMMS

The AD250SPM is designed to power and house the AD250 Receiver as a standalone unit a designed to operate in the harshest of outdoor environments.

The module is available with a range of communication options. The unit to the right is shown with a cellular router that enables the device to connect to the web via a local mobile phone network (coverage dependant). Data from the AD250 Wireless System may then be accessed by client systems from anywhere in the world.

Where site power is available we recommend the receiver is mounted in an enclosure without the Solar Power Components.

An Exd enclosure is available for hazardous zone installations. Specifications provided on enquiry.

INSTALLATION


Gauges and repeaters were fixed to 2-7/8″ tubing by our bespoke clamps, each gauge and repeater taking about 4 minutes to mount. No loss in rig time was experienced as these were preinstalled on tubing, activated ahead of time, and picked up in order as the tubing was run in hole.

CASE STUDY 5
  
Installation TimeAs little as 4 minutes per gauge
Gauges Per WellUp to 15 with a single receiver unit
Programming Options Short Term Well-Testing
Reservoir Monitoring
PBU Surveys
Pump-Off Control

CASE STUDIES

CONTACT US FOR MORE INFORMATION

CASE STUDY 1


Two AD250 Wireless Reservoir Monitoring Systems were installed in two Australian CSG wells to measure real-time wellbore data at hourly intervals over a 10-month period.

CASE STUDY 2


An AD250 Wireless Well Testing Pressure Gauge with no repeater was installed at 970mMD in a PCP CSG well to provide real time data whilst the well was pumping.


CASE STUDY 3


In all three deployments excellent signal strengths were received at surface and wellbore data was received reliably. The operator quoted:... “We performed a gradient survey on one of the wells as a comparison to the AD250 Wireless Downhole Gauge and…

CASE STUDY 4


Pro-Test successfully utilised the AD250 Wireless Gauge & Repeater Technology throughout their Air Assisted Flow Test campaign in the Surat Basin as a method for real-time downhole pressure and temperature monitoring without a depth limitation.


CASE STUDY 5


Five AD250 Wireless Downhole Gauges and Repeaters were fixed to 2-7/8” tubing, each gauge and repeater taking about 4 minutes to mount. No loss in rig time was experienced as these were pre-installed on tubing, turned on ahead of run-time, and picked up in order as the tubing was run.

CASE STUDY 6


Three Single AD250 Wireless Downhole Gauges were mounted 18m apart on the outside of 3-1/2” drill pipe on screwed mounts ported to the annulus and run in hole to 3500m with stops for data measurement at 150, 300, 600, 900, 1500, 2000, 2500, 3000, 3500 metres.


 
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