Volume I provides a comprehensive understanding of the acquisition and processing of the basic data needed to evaluate and predict the behaviour of oil and gas reservoirs. The subjects covered are as follows: the physical properties of the reservoir rocks and the fluids they contain; the estimation of oil and gas reserves; the interpretation of well tests; the evaluation of producibility and of the distribution of reservoir fluids; the global behaviour of a reservoir and aquifer in contact. Each topic is dealt with in a concise and rigorous manner, and the underlying mathematics is presented in an easily comprehensible fashion. Because it does not require prior knowledge of reservoir engineering, this book is ideal for use by students of the subject. However, it will also prove invaluable for field and office use by professional engineers, covering both the fundamentals and the latest developments in their sphere of operations.