Paper: Mohamed Soliman, Mehdi Azari and Joseph Ansah, Halliburton Energy Services Shah Kabir, ChevronTexaco

With changing industry drivers, current petroleum industry needs and emphasis are on developing shorter, less costly, and environmentally-friendly well testing procedures. Several techniques have been presented to address this need. Although these vary in procedure and method of analysis, all rely on basic principles of fluid flow through porous media. In this paper, comprehensive evaluation of general closed-chamber tests, including general surge tests, and comparison with special tests such as impulse and slug tests will be provided. For each technique, the review will examine: - Hardware requirement, test design, testing procedure - Theoretical background - Method of data analysis. Similar techniques are compared using computer-simulated examples to determine expected degree of accuracy compared to conventional testing, with a significant portion devoted to field examples that show techniques to analyze the well-testing data from surge testing, closed-chamber DST, slug testing of oil wells, under balanced perforating and testing, and back-surge perforation cleaning.