IDENTIFICATION OF WELL PROBLEMS USING WELL TESTING

The identification of problems in oil and gas reservoirs is crucial for optimizing
production and maintaining long-term reservoir health. Well testing, a key
diagnostic tool, provides valuable insights into reservoir behavior and well
performance by analyzing parameters such as pressure, flow rate, and fluid
properties during short-term tests. This case study focuses on the application
of well testing techniques—such as pressure buildup, drawdown, and
transient tests—to identify issues like reservoir heterogeneity, production
decline, wellbore damage, and flow restrictions. The methodology involves
collecting and interpreting pressure and production data from the literature
papers and comparing it using the Excel, followed by the estimation of key
reservoir parameters like permeability, skin factor, and productivity index.
Through the analysis of real or simulated well data, the case study aims to
diagnose common production issues such as formation damage, scaling, and
pressure anomalies. The findings highlight the importance of well testing in
detecting flow inefficiencies and reservoir depletion early, enabling informed
decision-making and targeted interventions like acidizing or hydraulic
fracturing. In conclusion, the case study underscores the role of well testing
in effective reservoir management, ensuring sustained well productivity and
long-term operational efficiency.
Keywords: Well testing, reservoir management, production problems,
pressure transient analysis, permeability, wellbore damage, reservoir
heterogeneity, flow restrictions.