Quick Look Petrophysics

Instructor  Mark Deakin, PhD (Petrophysics)

http://www.petrophysics.net    Fx +618 9203 5875 

Who Should Attend?                                       Print pdf

Anyone who needs to grasp the essential features of petrophysical data and how to use it quickly and effectively, qualitatively and quantitatively, to reveal the commercial significance of a well.  No prior knowledge of logs or formation evaluation is required.  All geoscientists and asset team members: managers, new petrophysicists, exploration & reservoir geologists, reservoir & drilling engineers, geophysicists, wellsite & operations geologists, core analysts. 

You Will Learn

- what makes a rock a reservoir

- what the mnemonics and curious sounds of formation evaluation actually mean

- how basic petrophysical data is acquired and where the key information resides

- how the key components of petrophysical data are pieced together into a coherent picture of the formation

- how to perform a qualitative quick look evaluation

- how to perform a quantitative quick look evaluation

- how to determine mobile fluid type and contact depth

- how to flag coals and bad data

- how other topics relate to the data and concepts introduced in this course

- how to relax and feel quietly confident when colleagues and friends start talking "logs" and "petrophysics"!

About the Course

This 3 day Basic Petrophysics Course sets out the essential data types used to identify and evaluate reservoirs, explains their operating principles and arrives at a set of 'quick look' results.  All geo-staff require this basic level of understanding to communicate with team members and to manage assets effectively.  All commonly used data is briefly presented with explanation of how it is acquired and where it fits in the overall scheme.  The formation evaluation essentials of determining reservoir rock, porosity, saturation, fluid type, contacts and permeability are explained in the broader context of a companies reserves and profits.  Micro-practicals accompany the introduction of tools to familiarize participants with the essential nature of that data, it's strengths and weaknesses.  Data covered includes: mudlogs; LWD logs, cores; SP logs, Caliper, GR, Multi-depth Resistivities, Density, Neutron, Sonic, NMR, Wireline formation testers and Well tests (DSTs). 

The ideas behind qualitative quick-look log analysis are demonstrated and then performed together as a work session.  The theory behind quantitative quick look porosity, saturation and netpay is then explained and performed, again together as a work session.  This provides students with two levels of involvement with formation data: Visual and Numerical.  Common geological features are highlighted on conventional logs to enable them to be flagged by non-petrophysicists.  On the third (final) day wireline formation pressures, usually a well's definitive data, are covered in more detail and used to determine the free water level and demonstrate the mobile phase.  Other more specialist topics such as Facies, SCAL, Capillary Pressure and Seismic Petrophysics are introduced in diagrammatic form to show how they fit within the broader context formation evaluation and how they can be used to underpin the quick look approach explained in this course.  A PPL Quick Look Evaluation xls, with embedded Key Equations is a valuable product of this course.  No prior knowledge of logs or formation evaluation is required.

Course Content  Detailed contents (Public courses 3 days. Tailored In-House)

- basic principles of mudlogs, LWD logs, cores, all conventional logs and well tests

- summary table of typical data: name, principle, function/role, strength, weakness

- shaliness and lithology indications from GR, density-neutron crossover and PEF

- typical resistivity invasion profiles - what they say

- typical resistivity-porosity trends in water and HC zones: what resistivity really means

- how shaliness obscures reservoirs and gas zones

- density-neutron and sonic porosity

- determining Rw

- graphical Pickett plots and Archie saturation

- formation pressures, supercharging and fluid contacts

- quick look permeability

- identification of reservoir rock and netpay from typical logs

- coals and bad data

- all key quick-look stages demonstrated in Geolog

- common circumstances where quick look results will and will not be valid

- reviewing your results with common-sense logic

- daily Recaps

- using the PPL Quick Look Evaluation xls

- micro-practicals, vendor movies, workshops, experience, open debate!

The Instructor

Dr Mark Deakin is an experienced and innovative mainstream petrophysical consultant, author and enthusiastic tutor in petrophysics.  He holds a Ph.D. in ‘Integrated Petrophysics’ from London's Imperial College, is an ex Amoco petrophysicist, and has 25 years experience, including 12 as a lecturer, independent consultant and Director of his own consulting company.  He has performed over 40 detailed reservoir studies, primarily in Southeast Asia’s difficult carbonates and stacked ‘low-contrast-pay’ reservoirs. Deakin chooses to work frequently in operations to keep abreast of new LWD, coring and wireline technology.  His holistic approach is to bring each field's development uncertainties into sharp focus and then systematically reduce them by a cost-benefit ranked plan of action.  Innovative integration and clear, practical recommendations typically result in improved simulation and increased reserves, at low cost.  Soon after his petrophysics PhD Deakin authored the first public petrophysical data integration course.  He has continually evolved and chaired this and other courses, publicly and in-house, for eight years through OGCI, HOT and independently.  Deakin is a long standing member of the SPWLA.