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MaxGas™
Expert |
| *Click
here for a printable version of this information. (.pdf
format - 2.46 MB) |
| MaxGas™
Expert is one of many solutions available from Emerson Process Solutions’
Hydrocarbon and Energy Industry Center for optimizing your production
processes. |
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| The
Challenge |
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Gas
wells that produce in mature areas are subject to liquid loading and
other operational problems. Continuous well surveillance is a highly
effective way to reduce operating costs associated with diagnosing
and controlling wells.
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| The
Solution |
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MaxGas™ Expert is a software application that enhances production
of gas wells with liquid accumulation. Extensive field use has proven
that MaxGas™ Expert increases gas production 3% to 5%, reduces operating
costs through preventative maintenance, and improves manpower efficiency. |
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Benefits |
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MaxGas™
Expert provides:
· Closed-loop supervisory control to maximize production by
optimizing deliquification operations for plunger lift wells
· Intelligent alarms for abnormal well conditions
· Decline curve analysis
· Low implementation cost and time frame
MaxGas™ Expert’s advanced capabilities are achieved using expert system
technology that has captured the expertise of operators. The application
uses these rules to make control decisions that mimic those made by
humans.
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System
Features |
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MaxGas™
Expert combines operating experience, empirical relationships, and
either real-time fuzzy logic or reinforcement supervisory control
into a production management tool that interfaces with SCADA or other
real-time production systems. It can be scaled to handle a few or
thousands of wells.
Intelligent Alarming
Unlike typical SCADA alarming, MaxGas™ Expert uses expert system rules
to monitor multi-sensor conditions on wells and compressors such as:
· Liquid loading detection
· Tubing leak detection
· Flow below critical velocity
· Out-of-range plunger velocity
· Worn plunger detection
· Severe change in cycle time
· Incorrect valve position
· Successive plunger arrival failures
· Compressor alarms for engine speed, temperature, rod loading,
and valve damage
Decline Curve Analysis
Continuous well surveillance significantly aids the petroleum engineer
in identifying potential problem wells and maximizing production.
To detect abnormal drops in production, MaxGas™ Expert compares current
production with decline curves constructed from a production database.
Production Optimization
MaxGas™ Expert maximizes gas production using advanced controller
algorithms to adjust low differential pressure and open pressure setpoints.
The system automatically modifies these setpoints to create optimum
flowing and shut-in cycle times for maximum production and optimum
deliquification performance.
System Architecture
MaxGas™ Expert uses Gensym Corporation’s G2 expert system development
environment. The application communicates with many databases, data
historians, and SCADA systems using a standard software bridge. If
required, custom interfaces may be developed. MaxGas™ Expert runs
under most major operating systems including Windows 2000, Windows
NT, Unix and VMS.
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Satisfied
Customers |
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MaxGas™
Expert has been deployed by BP America on a number of wellsites. Installations
include Oklahoma and Texas, in addition to other North American assets.
The fields experienced average production increases of 3% to 5%. The
demonstrated economic and operational success of MaxGas™ Expert proves
that expert systems technology can make significant contributions
to profitability and efficiency in field production operations.
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