JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Prerequisites

Chemical Engineering Fluid Mechanics, Petroleum Geology, Chemical Process

Calculations

Course Objectives:

• Recognize the central role of reservoir engineers in describing, evaluating and managing the reservoir system and, therefore, strive to gain a sound understanding of scientific principles used in the basic activities of reservoir engineering.
• Emphasize the impact of reservoir fluid behavior on reservoir exploitation.
• Understand the mechanics of oil and gas production in reservoirs and be able to apply the basic quantitative tools of reservoir engineering to analyze and/or predict the behavior of the reservoir under potentially useful production schemes.

Course Outcome

The student would be able to understand mechanics of oil production (natural

reservoir energies and expulsion of fluids), and basic performance characteristics of various reservoir types to interpret performance characteristic curves for each reservoir type.

UNIT - I

Some basic concepts in Reservoir Engineering: Calculation of Hydrocarbon volumes – fluid pressure regimes – oil recovery and recovery factor – volumetric gas reservoir engineering – application of the real gas equation of state – gas material balance and recovery factor – Hydrocarbon phase behavior. PVT analysis for oil: definition of the basic PVT parameters – collection of fluid samples – determination of the basic parameters in the laboratory and conversion for field operating conditions – alternative manner of expressing PVT lab analysis results – complete PVT analysis.

UNIT - II

Material balance applied to oil reservoirs : general form – the material balance expressed as a linear equation – reservoir drive mechanism – solution gas drive – gascap drive – natural water drive – compaction drive under related pore compressibility phenomena. Darcy’s law and applications: Darcy’s law and field potential – sign convention – units and units conversion – real gas potential – datum pressures – radial steady state flow and well stimulation– two phase flow – effective and relative permeabilities.

UNIT - III

The basic differential equation for radial flow in a porous medium – derivation of the basic radial differential equation – conditions of solution – the linearization of the equation for fluids of small and constant compressibility. Well inflow estimation for stabilized flow conditions: Semi - steady – state solution – steady state solution – example of the application of the stabilized inflow equations – generalized form of inflow equation under semi steady state conditions.

UNIT - IV

The constant terminal rate solution of the radial diffusivity equation and its application to oil well testing: The constant terminal rate solution – transient, semi steady state and steady state flow conditions – dimensionless variables – general theory of well testing – the Mathews, Brons, Hazebroek pressure build up theory - pressure build up analysis techniques – Multi Rate Drawdown testing – the effects of partial well completion – after flow analysis.

R18 B.TECH PETROLEUM ENGG. III YEAR

UNIT - V

Gas well testing: Linearization and solution of the basic differential equation for the radial flow of a real gas – the Russel, Goodrich etal. solution technique – the Al Hussainy, Ramey Crowford solution techniques – non– Darcy flow – determination of the non-Darcy coefficient F – the constant terminal rate solution for the flow of a real gas – general theory of gas well testing – multi rate testing of gas wells – pressure build up testing of gas wells – pressure build up analysis in solution gas drive reservoirs. Natural Water influx: the unsteady state water influx theory of Hurst and Van Everdingen and its application in history matching – the approximate water influx theory of Fetkovitch for finite acquifiers predicting the amount of mater influx – application of influx calculation techniques to steam soaking.

TEXT BOOK:

• 1. Fundamentals of Reservoir Engineering, L.P. Dake, Elsevier Science, 1978 (17th Impression 1998).

REFERENCE BOOKS:

• 1. Reservoir Engineering Handbook, Tarek Ahmed, 3rd Edition, Gulf Professional Publishing, 2006.
• 2. Petroleum Engineering: Principles and Practice, J.S Archer & C.G. Wall, Graham &Trotman Inc. 1986.
• 3. Basic Reservoir Engineering, Rene Cosse, Editions Technip, 1993.
• 4. Petroleum Reservoir Engineering, James W Amyx, Daniel M. Bass Jr., Robert L. Whiting, McGraw Hill, 1960. R18 B.TECH PETROLEUM ENGG. III YEAR