Westbay Instruments’ COVID-19 Response and Action

Pressure Probes

MOSDAX Pressure Probes and MAGI Controller

The MOSDAX pressure probe incorporates a pressure transducer, providing the ability to measure fluid pressure in one monitoring zone at a time. Digital output from the probes are sent through a rugged, light-weight, single-conductor armoured cable to MAGI controller at the surface. The MAGI control unit can be operated as an attended user interface or as a stand-alone datalogger.

Monitor Groundwater Pressure

Periodic manual measurements of in-situ fluid pressures can be made one port at a time where data are presented on a built-in LCD display of the MAGI controller. Alternatively, the probe operation and data collection can be done by means of proprietary MProfile software run on a laptop PC connected to the MAGI controller.

For automated monitoring of fluid pressure in multiple zones, a string of MOSDAX pressure probes is assembled, using cable modules custom built to suit each particular well. Up to 31 probes can be connected to one data logger (i.e., MAGI data logger with MODBUS interface). Each probe locates and mates with its specified monitoring port and the data logger located at the well head is programmed to collect and record, individually or simultaneously, readings of pressure and temperature from the probes as well as from a barometric sensor within the logger. A maximum of 63,000 readings can be stored. Recording frequency is programmable, along with threshold settings that can be used to trigger recording so as not to miss unanticipated pressure changes. Because the system is monitoring shut-in zones, it is very sensitive to pressure changes whether in high- or low-permeability environments.

An important aspect of automated monitoring in a Westbay System completion is that the sensors (pressure probes) are not permanently installed and may be removed at any time for calibration and servicing, plus the integrity of the monitoring completion can be checked and verified at any time.

Alternatively, the MODBUS communication interface can deliver data directly to an external SCADA system.

Westbay Systems allow you to:

  • Access multiple locations in a single well
  • Monitor pressure manually or automatically
  • Redeploy probes in alternate locations
  • Select from a variety of logging modes
  • Perform in-situ calibration checks
  • Document quality assurance

Hydraulic Testing

Westbay technology provides many effective methods for evaluating and testing the hydraulic characteristics of a site. Discrete monitoring ports offer the unique ability to observe and record details within a single well.

Westbay Systems allow you to

  • Observe detailed distributions of groundwater pressures
  • Observe the effects of pumping tests or changes in barometric pressures
  • Gain insight into permeability variations
  • Generate a stress in a monitoring zone and observe responses of neighboring zones and wells

A number of qualitative and quantitative tests can be performed to determine the hydraulic parameters of formation materials or to verify the operation of the system.

  • Single-zone tests
  • Slug tests
  • Pulse-interference tests
  • Constant-head tests
  • Vertical interference tests
  • Cross hole tests
  • Tracer tests

As part of a complete environmental monitoring project, Westbay Systems are engineered to meet the rigorous demands of a wide range of operations. Westbay Systems provide the highest level data quality necessary to support critical decisions.