Integrated Petrophysics – Quick Look Techniques
|Instructor Mark Deakin, PhD (Petrophysics)
Public courses 3 days. Tailored In-House
Who Should Attend?
Operations Geologists, Petrophysicists, Wellsite Geologists, Experienced Log Analysts, Users of petrophysical results, Geo-modellers, Exploration Managers, Team Leaders. Anyone who could benefit from being aware of the numerous quick and easy but never used techniques that transform quick look log analysis into robust, hard edged results that can be taken to the bank.
Bring your laptop with MS Excel.
During operations you need fast and effective, multi-disciplinary techniques which cross check and verify your petrophysical results for objective, fact based decisions. Your log based field development studies should also be verified to learn if your geomodels are actually telling you the truth. This can be achieved by simply quantitatively integrating your quick look log analysis with non log data. To verify your petrophysics moves you into an environment of certainty, confidence and leadership. These simple integrated petrophysics techniques benefit everyone downstream of the drill bit.
You will learn
- To do in 3 days what usually takes 10 !
- To do quick log analysis quickly and efficiently with far greater accuracy and far greater confidence than ever before
- To perform the analysis yourself rather than listen to someone else talking about it
- To do your own quick look analysis on your own laptop and save the entire process as a working template
- To quickly understand the essential operating principles, outputs and role of all conventional and special logging tools, their benefits and pitfalls, without getting bogged down in tool theory or irrelevant detail
- To quickly identify porosity, saturation, netpay, fluid contacts, permeability and test intervals in a rapid, easy to understand workflow
- To know your Reservoir Type and what you must now do differently
- Why equations go wrong and what to do. When to quit and start afresh
- To quickly understand why and when to run ‘special logs’ including Image logs, NMR, Array sonics, Rotary sidewall cores and MDTs
- To involve others in your team (and this Instructor..) to enhance and verify your quick look petrophysics
- To avoid wasting precious time on unnecessary ideas and data and to keep your mind focused on what really matters
- To acquire the key data that moves the bottom line and to cancel the data that does not. This means making correct real time decisions which is only possible if your quick look is robust – if you know what you are doing. After this course you will know what you are doing!
- To use PetroDB and other wells quantitatively during quick look to harden your decisions
- To verify your field development log analysis with these quick look techniques and reveal the shocking truth lurking within your geomodels
- To present your results succinctly and with conviction (because you know they are cross-checked and consistent and because you know what matters and what is noise)
Quick Look objectives
Review of mud log, LWD and WL (wireline) information
Logging curves, briefly: Mnemonics, Essential physics, Role during evaluation, Recognising & reducing the impact of common problems
- Caliper: simple – 6 arm
- Total and Spectral Gamma Ray
- Spontaneous Potential
- Resistivity: Induction, Laterolog, Micro, Multi depth, RhRv (3D resistivity), Standoff
- Density, Photoelectric, Density correction
- Neutron: Thermal, Epithermal, Sigma
- Compressional sonic
- Image logs: resistivity & sonic
- Modern geochemical tools including Lithoscanner
- Nuclear Magnetic Resonance (NMR)
- Array sonics, shear waves, cross dipole, Stoneley
Log Quality Control LWD & WL – the essential curves, what to do, how to achieve optimal logs
Merging LWD and Wireline
Water and Oil base Mud: Why you must have good mud and how to achieve it
Using offset wells, PetroDB, analogues – the questions to ask, the data that informs
What to watch for when you click GO on your software’s quick look module
Quick Look Calculations
Vshale and Lithology. Cross checks
Porosity. You must perform these cross checks!
Gas Zone Porosity
Recognising Reservoir Types. The necessary modifications to data acquisition and work flow
Flag certain water zones
Water salinity (NaCl) & Rw. The essential cross checks
Workshop: The essential Quick Look Integration Techniques
How to use any available core & tests from offsets and PetroDB
(Hingle – Pickett) plot iteration for Rw, matrix density & sonic, Archie m & Sw. Use with non-log data
Default Archie Sw, cross checks
Other quick log and non-log crosschecks: NMR, how to use any core, offsets, PetroDB
Quicklook Shaly Sand evaluation, when and how. The cross checks you must perform!
Permeability, Pay, Free Water Level
Timur-Coates Permeability Equation – Sw integration
Capillary Pressure Sw check. The simple, logical checks you must perform
Quicklook NMR Sw and Permeability
Full Circle: how to use porosity, saturation and permeability with all log and non log data to quickly cross check your Quick Look results and how to quickly reconcile mismatches
Quick Look Integration Techniques – problems wells & problem Reservoir Types (response to class requests)
Carbonates – Low Contrast Pay – Fractures : the extra information you need to validate your Quick Look Log Analysis
MDT: how to avoid supercharging, single point gradients, Pump out & observe
Your Intelligent, Simple and Indispensable Quicklook Spreadsheet!
Daily Recaps, Questions and Powerful debate – debate that will revolutionise the way you do quick look forever
This course is not difficult; it is common-sense but shocks the experienced log analyst with its 100’s of simple, easy to apply techniques which transform quick look log analysis into fact based petrophysics. These techniques eclipse ALL sophisticated, black box log analysis and most are completely free. To spend resources on push button processing or special logs but to miss this opportunity to at least become aware of these simple, proven cross checks defies common-sense.
Mark Deakin is a consultant, author and course instructor in Petrophysical Data Integration. He holds a Ph.D. in ‘Integrated Petrophysics’ from London’s Imperial College, is an ex Amoco petrophysicist and has over 25 years’ experience, including 18 as a course instructor with PetroSkills and HOTEng. He has performed over 60 detailed reservoir studies worldwide; primarily in Southeast Asia’s low-contrast pay and carbonate & fractured reservoirs. Deakin’s proven approach is to identify and rank reserves uncertainties then guide companies towards defensible booked reserves via the application of new technology, targeted data acquisition and the systematic, logical integration of all related data. After his PhD Deakin authored the first public Integrated Petrophysics course in 1989 which evolved into the industry’s benchmark petrophysics training course. This was followed by courses in Carbonate & Fracture petrophysics and 3 day focused modules on How to use Modern Logs with SCAL, Quick Look Integration Techniques, Low Resisivity Low Contrast Pay, Laminates & Thin Beds, Using PetroDB effectively and Renewable Energy. The uniquely powerful PetroDB-WEB core-log-test linked database is his current project. Deakin is an active member of SPWLA and occasional lecturer at Curtin University and his consulting company PETROPHYSICS Pty Ltd has offices in Perth, Australia