DrainageMonitor is a real time downhole pressure measurement service based on highly robust and cost effective downhole monitoring technology solution.
The downhole pressure monitoring system is used to tune your dewatering strategy by measuring downhole pressure which delivers increased gas drainage by decreasing the hydrostatic head, increasing drainage uptime by protecting the pump, and protecting the reservoir by allowing controlled drawdown. The DrainageMonitor solution delivers the lowest cost and most reliable measurement system on the market, custom-designed for coal drainage optimization activities.
The Complete DrainageMonitor™ Solution –
Coal Mine Safety and Emissions Reduction
Technology
DrainageMonitor™ continuously monitors water levels in the completion annulus and pump intake conditions via a pressure sensor. Data from the pressure sensor is transmitted to surface using dedicated armoured instrument cable. By delivering data from the pressure sensor to the Variable Speed Drive (VSD) control system parameters can be constantly adjusted to maintain water levels at the most optimal producing point.
Configurations
- Single zone and multi-zone installations
- WellDog-hosted data or customer-specified SCADA tie-in
- Permanent or retrievable
Field Services
- Turnkey, fit-for-purpose systems
- Installations
- Retrievals
- Retrofit and reuse
- On-site training and data interpretation
Features
- Allows water levels in coal wells to be accurately monitored and optimized on a continuous basis
- Data can be used to ensure operation of the ALS system is maintained within pre-defined limits, minimizing pump ware, and in so doing prolonging pump life
- Data from can be handed-off to third party VSD controllers, enabling operation of ALS systems to be adjusted automatically to minimize flowing bottom hole pressure and thus optimize well productivity
- Monitor critical well pump down operations during initial well unloading, or following any well shut-ins, to ensure no surging of water and gas into the wellbore. minimizing risk of coal fines and other solids mobilization, which can otherwise increase completion skin through plugging of fractures and/or perforations
- Comparing bottom hole pressure data with other surface and ALS pump parameters aids diagnostics of well and completion performance problems as well as to refine pump size selection for use in future well workovers, identify pressure bottlenecks and optimize extent of surface compression required
- Mining engineers can extract meaningful trends from the bottom hole pressure data that, in conjunction with surface measurements of water and gas rates, could be used to validate reservoir models through history matching
