Coalbed Methane(CBM) SITAN coalbed methane can strictly control the displacement to make liquid level descend at a uniform velocity, thus achieving the aim of fast production increasing without damaging formation; SITAN CMB system can also control gas volume to make production decrease...
SITAN coalbed methane can strictly control the displacement to make liquid level descend at a uniform velocity, thus achieving the aim of fast production increasing without damaging formation; SITAN CMB system can also control gas volume to make production decrease constantly, thus letting casing pressure stay in normal working range for a long period, protecting formation and achieving production maximization.
1. Achieve unattended electronic patrols, pumping unit starting alarm（with video）.
2. Achieve remote collection of data such as gas production, water production, pressure, liquid level data, downhole pressure temperature, electrical parameters, and pump diagrams.
3. Realize the liquid surface descent rate of CBM wells, remote automatic or manual control of casing pressure regulating valve.
4. Terminal PC machine software can estimate water and gas volume, which has a significant meaning for discharge and acquisition system formulation.
5. Terminal PC machine can intelligently fit and adjust discharge and acquisition system to make it optimal by data software collected remotely.
6. Remote voice call to well site, illumination control, intruding alarming, video.
7. UPS protection function for a short time power failure, automatic switch function of grid electricity and generator;
Real-time data acquisition
Gas flow, system pressure, displace, casing pressure, flowing
bottom hole pressure, down hole temperature, indicator diagram
of pumping unit, stroke, valve opening, electrical parameter of
pumping unit (including current, voltage, torque and power) and
coal dust content
Alarm time difference ≤10s, alarm accuracy rate ≥99%;
Low frequency soft-start, soft shutdown
Automatic control of flowing bottom hole pressure
Automatic control of liquid level, control accuracy
Automatic control of casing pressure, control accuracy
Automatic control of gas output, control accuracy
Minimum interval of information refreshment
Maximum time of production data refreshment
Maximum time of system equipment state query
Data mapping method
Maximum time of data mapping
Display view of real-time control
Real-time state query time
Patent for SITAN CBM