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Coalbed Methane(CBM)

Coalbed Methane(CBM)

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...

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Product Details

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 constantly, thus letting casing pressure stay in normal working range for a long period, protecting formation and achieving production maximization.

 

Features

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;


Specification

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 function

Alarm time difference ≤10s, alarm accuracy rate ≥99%;

Soft-start function

Low frequency soft-start, soft shutdown

Automatic control of flowing bottom hole pressure

control accuracy

3Kpa/d(0.44psi/d) 

Automatic control of liquid level, control accuracy

0.1m/d

Automatic control of casing pressure, control accuracy

3Kpa/d(0.44psi/d)

Automatic control of gas output, control accuracy

≤10m3/d

Minimum interval of information refreshment

2S

Maximum time of production data refreshment

≤30s

Maximum time of system equipment state query

≤60s

Data mapping method

≥4 types

Maximum time of data mapping

≤30s

Display view of real-time control

≥4

Real-time state query time

≤25s


Patent for SITAN CBM

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