SRABS - An economic evaluation of the technological innovations found through an Anti-Buckling-System
Research output: Research › Master's Thesis
This work represents the economical advances through the possibility of introducing the sucker-rod anti buckling system (SRABS) of the Montanuniversitaet Leoben. At the beginning, the basics of sucker-rod pumping and the related problems, such as buckling, are discussed shortly. This is done for highlighting the underlying problem and the step by step solution of the work. After that, involved components of the sucker rod system are discussed in more detail and selection and design principles for pumping equipment are stated. Furthermore, methods for the economic analysis are discussed, providing information about their motivation of use. Based on this information, real data provided from the OMV is taken, interpreted and adapted for the analysis of a given standard well. As this work investigates the advances of SRABS, the evaluation not only discusses possible cost fluctuations caused by different designs, it also includes buckling-based KPIs, such as the Mean Time Between Failures. On this basis, actual cost distributions - system costs, electricity costs and lost production - for event-based scenarios caused by buckling failures are calculated. Similar to the standard well, but in respect to the benefits of the SRABS system, a well with identical basic data is designed. Assumption concerning failures and consumptions are based on multiple simulations of the subsurface sucker-rod anti buckling system. As a result, two main operational modes - scenarios - of the anti-buckling system were found - Cost Minimization (CMC) and Production Maximization (CMP). Those Costs are calculated by considering the advances in design, consumption and work-overs schedules. As a last step those innovations are compared to the actual standard installation and discussed concerning their possible areas of application. These evaluations clearly show the opportunities for saving costs and the resulting broader range of operational use of SRABS.