SPECTRUM 2000 COURSE OUTLINE c. 1978 - 2008 E. R. (Ross) Crain, P.Eng. Rocky Mountain House, Alberta Canada T4T 2A2 403-845-2527 email usail us Updated 15 Oct 2007

Session TWO - ANALYSIS OF OLDER LOG SUITES
Course Outline and Instruction Materials c. 1978 - 2008 E. R. (Ross) Crain, P.Eng.
 
Integrated Courseware Connecting Logs, Cores, Tests, Productivity, Cash Flow, and Seismic Petrophysics - Since 1973

Students in this class will have some experience with logs, but need a clearly defined procedure for analysis of older logs to enhance their job skills. This seminar is supported by "Crain's Ancient Logs" (40 pages) reference manual and exercises, a high quality PowerPoint presentation, and 1 or 2 days instruction.

DESIGNED FOR: Anyone who works with older logs, or who wants to do more with their logs, or who works with other people who use logs:

DURATION: 1 day - 8 Professional Development Hours (PDH)

SUMMARY: This quantitative course covers all topics needed to calculate shale volume, porosity, water saturation, permeability, volumetric reserves, and flow capacity from older (pre 1962) open and cased hole well logs. Integration and calibration to modern logs, cores, tests, and production data are stressed.

• Brief tool theory – ES logs (64"/16" normal), laterologs, induction, SP, micrologs, sonic, density, neutron, GR.  

• Focusing, or lack of it, on older log suites. 

• Common displays of older logs and how to identify each curve.

• How to read older logs (e.g. bed boundaries, which log curve is best to use).

• How do the older measurements compare to current measurements, how have these measurements evolved over time – direct comparisons.

• How much information can be read from older logs (porosity, perm. hydrocarbon  indicators, bypassed pay),

• Limitations, common pitfalls of older logs (borehole condition. mud system, invasion, mud cake effects).

• Quality control and troubleshooting on older logs.

• “Rule of Thumb” analysis techniques to help identify hydrocarbons – carbonates and clastics..

• Using core data, local knowledge, modern logs in offset wells to calibrate results.
   

BENEFITS:

SEMINAR OUTLINE:

1 Ancient Logging Tools 2 Shale Volume 3 Pore Volume 4 Porosity From The Neutron Log 5 Porosity from ES and Micrologs 6 Maximum Porosity Method 7 Lithology 8 Formation Water Resistivity 9 Water Resistivity From Catalog or DST Recovery 10 Water Resistivity From Water Zone (R0 Method) 11 Water Resistivity From Spontaneous Potential 12 Water and Hydrocarbon Saturation 13 Water Saturation from Archie Method

14 Water Saturation from Simandoux Method 15 Water Saturation from Dual Water Method 16 Water Saturation From Buckles Number 17 Water Saturation and Porosity from Ratio Method 18 Irreducible Water Saturation 19 Permeability and Productivity 20 Permeability From Wyllie-Rose Method 21 Permeability From Porosity 22 Summarizing Results 23 Case Histories 24 Modern Resitivity Inversion Software 25 In Conclusion 26 Exercises