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Analyzing pressure and temperature data from smart plungers to optimize lift cyclesChava, Gopi Krishna 15 May 2009 (has links)
The problem of liquid loading is common for all gas producing wells and should be
identified and solved for efficient gas production. Production engineers and operators
need to choose the best solution possible, one that is cost effective and also efficient in
doing the job. The plunger lift operation is a cost-effective solution to this liquid loading
problem and also is efficient in increasing the gas production. However, the current
understanding of plunger lift operation has used field experience and some previous
models that have restrictive assumptions which might not be applicable for all plunger lift
installations. This research proposes a new plunger lift model that overcomes some of the
limiting assumptions of earlier models by using additional data available in the form of
pressure and temperature from new technology like smart plunger. The model is based on
fundamental principles of mass conservation and pressure balance, and uses the smart
plunger data as input. The implementation of the model is carried out in user-friendly and
easily accessible software like Excel VBA (Visual Basic Applications). The model
predicts the plunger velocity, plunger position and annulus liquid level during an upward
travel of the plunger in an onshore gas well in East Texas. The results of model
implementation in VBA show the importance of fluid properties for the model, apart from indicating that the model is optimized for the given set of input data. The model
developed in this research considers only pressure drop due to gravitational effects, and
thus provides a scope for improvement in modeling the plunger lift dynamics by adding
frictional and acceleration components. This research also provides recommendations for
future work that can be carried out on plunger lift modeling using smart plungers.
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Plungers And Productivity: A Student Artist's Survival Guide To Multi-taskingWansa, Amanda 01 January 2009 (has links)
To be a fully functioning theatre practitioner, the developing student artist becomes equipped with a practical skill set that is ordinarily cultivated through formal training and study. Typically, organized study leads him/her to focus on a specific facet of the business: acting, directing, design, etc. However, students often develop a vast array of talents and skills within the profession and find themselves standing at a crossroads between what "kind" of artist to be; what singular aspect of the arts on which to focus. Why not do it all? For those students who "do it all", there is an additional challenge: the artist who is a student immersed in daytime study and nighttime production obligations has to wear two caps. One is that of the learner and one is that of the employee, the producer, and perhaps even the teacher. When are these caps traded or are they both worn through all processes? This thesis will reveal my creative and practical processes from two productions at the University of Central Florida for which I played on- and offstage roles: I worked as a Sound Designer and featured actor in Sophie Treadwell's Machinal; I was the Vocal Director for Urinetown: The Musical, and also played Penelope Pennywise, a leading role. I will describe the challenges and successes of each project by examining the following evidence: my personal process with each piece, demonstrated through reflection and examples from the work; interviews with those involved in the productions as well as outside reviews and feedback; and research of each play. Research will include production history, intent of authors, and aspects that informed my work both onstage and off. Did multi-tasking sacrifice the quality of my work for any of my delegated tasks? Did I enjoy more success in my progress in time management, the ability to solve problems, and collaboration process with fellow artists, or in the actual on-stage products? What aspects of my training in my graduate program added to the quality of my work on these productions? Does being a multi-tasking artist help or hurt one's career in theatre?
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