What is WinGLUE®?
Analysis + Evaluation + Design + Optimization = Surveillance
WinGLUE® Gas Lift User Environment for Windows
WinGLUE® is Gas Lift Software:
WinGLUE® is a powerful, ground-breaking gas-lift well surveillance
software tool, developed and field-proven by AppSmiths and Shell over
the last 16 years. This tool is now available commercially.
What do we mean by gas lift surveillance?
Gas-lift design is easy. It's only after the wells are operating that
gas lift gets tricky. Any operator can spot a well that is not
producing. But even trained operators and engineers have trouble
finding wells that are producing sub-optimally.
Gas lift hides its inefficiencies! Surveillance of a gas-lifted field starts by
taking whatever information is available for a well and defining a probable
scenario (or two) for its current operation -- that's the Analysis
phase. Then, using this scenario, Evaluating what benefits might
be gained by design or operational changes. In some cases, the Design
phase follows where changes to the installed valves or other gas lift
facilities are designed. Surveillance progresses on a well-by-well basis.
Finally, because a gas lift field must be considered a system, the distribution
of gas amongst the wells must be Optimized. Then the surveillance
loop is repeated. Effective surveillance is a continual process.
The key to successful surveillance is being able to track changes in the wells
over time, comparing well tests and pressure survey information as the well
changes. WinGLUE® can do this for even large numbers of wells, multiple fields,
and multiple users.
WinGLUE® was designed to support the surveillance of gas-lifted fields in Shell.
What do we mean by 'field-proven'?
WinGLUE® was designed for surveillance by surveillance teams. Its
functionality was dervived from the collective knowledge within Shell;
experience from Shell’s Gulf of Mexico Gas Lift Optimisation Team and
enhanced with experience in Petroleum Development Oman.
WinGLUE® has over 400 registered users within Shell and the numbers are growing
outside Shell. It is being successfully used in 10 Shell operating companies.
For example: In Shell Oil in the Gulf of Mexico, surveillance using WinGLUE®
produced a 10x return on investment in first six months.
PDO in Oman gained 12.5% net oil, UTC of US$0.30/bbl, plus US$1 MM CAPEX
Shell Gabon gained 18% in two rounds of optimisation.
What do we mean by ground-breaking?
WinGLUE® contains special surveillance features not found in other tools,
such as: field level reporting, valve throughput calculations, valve
open/closing analysis, flowing and static pressure survey analysis,
gas-lift stability analysis, and the develpment continues...
Surveillance teams can share data and work together using WinGLUE®’s
multi-user/multi-database capability. Data is stored in a commercial
database (Oracle on a network server or Watcom locally) and can be
exchanged with other applications or queried using commercial software
tools (such as MS Access or MS Query). Data may be exchanged at the well
or field level between any databases on any supported hardware platform.
This makes it possible for teams to share data and for one or a few users
to be 'master' users, reviewing the work of others before allowing
database changes to be made. Administration of access to the database is
both easy and practical.
WinGLUE® runs under Windows 9x, NT 4.0, 2000, XP and Vista.
Many other design packages are lacking in the most important and
difficult design scenario -- design for mandrels in place. WinGLUE® has
a fully flexible design capability for existing mandrel spacings including
the ability to dummy any mandrel in the design.
Other optimisation packages miss important practical limitations in gas
lift. Because they use a curve fit of the data, they may not correctly
detect/handle discontinuities caused by insufficient differential at lower
injection rates. This leads to optimisations where the minimum stable
rates cannot be predicted or enforced. WinGLUE® overcomes these limitations
by predicting the onset of instability and handling performance curve
discontinuities through the use of a fast algorithm which finds the
optimum distribution without resorting to curve-fits.
WinGLUE® can incorporate and link to the best technology. It is already linked
in some installations to a real time monitoring and control system for gas lift wells.
Why should Shell make WinGLUE® available commercially? Won't they lose their
Shell believes that sharing WinGLUE® will only make it better as new
enhancements suggested by other users are included. The implementation of
proper gas lift surveillance is the true competitive edge. Shell
believes it already has the edge in implementation with its world-wide
experience and real-time systems -- and intends to maintain that edge.