PTA/RTA Module 1
Modern pressure transient analysis (PTA) and rate transient analysis (RTA) from theory to practice
Strong practical emphasis on real data with many real life examples
Immediate return on investment with attendees able to perform commercial analysis upon completion of the course
The KAPPA pressure / rate transient analysis Module 1 course (PTA/RTA Module 1)
has been designed to teach the generic methodology and the practice
of pressure transient analysis (PTA) and rate transient analysis (RTA) in
addition to the mechanics of Saphir and Topaze software which is learnt
almost as a by-product. The emphasis is therefore on a visual and conceptual
approach to interpretation including only essential mathematics. Full theory,
including formulae and derivations are provided, as well as the conceptual
explanation of PTA and RTA in the accompanying KAPPA dynamic data analysis (DDA)
handbook provided to each attendee.
Field examples are used to illustrate each concept. By the end of the course the
attendee should be capable of performing analyses and developing interpretations.
In addition, the attendee should have the foundations sufficient for developing
further experience in transient and production analysis.
Introduction to PTA and RTA
When do we perform PTA or RTA?
Basic theory of diffusion PTA / RTA
The basic principles and terminology governing both methods.
Introduction to Darcy’s law and the equation of state leading to
the diffusivity equation, the principle of superposition,
infinite-acting radial flow, wellbore storage and skin and
Methodology from the simple straight line Horner to the
current model-on-the-fly Bourdet derivative.
The quality control process before making an analysis.
The basic Saphir features including the interpretation path
of load, edit, synchronizing, model, classical methods, the
derivative and the application to field examples.
Vertical wells, skin, finite/infinite conductivity fractures,
limited entry and horizontal wells.
Homogenous and heterogeneous models behavior
including 2Φ, 2κ and composite
Single limit, intersecting, parallel faults and closed system.
Includes typical errors encountered when diagnosing a boundary
effect with an illustration of superposition effects and the
influence of production duration on the analysis
Basic gas tests
The use of pseudopressures and multiple period analysis
for rate dependant skin includes an isochronal test example.
The IPR AOF options in Saphir and the connection to the Amethyste WPA module.
Test objectives and how to design a test to achieve them.
Methodology from the basic empirical methods including Arps and Fetkovich
to the current modern Blasingame, material balance and loglog diagnostic plots.
The basic Topaze features including the interpretation path
of load, edit, model, p(q), q(p), fast model and the
application to field examples.
Basic numerical PTA /RTA
The principle of the linear (single phase) numerical model,
how to build a model including defining the well type, composite zones,
faults and thickness.
An introduction to advanced features
No public course planned
All courses are conducted in English unless otherwise notified.
To be announced
To be announced