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PPPEDIA

PPPEDIA was a project initially started by the Data Standards and Best Practices Group in 2006.  It aimed to address some of the Frequently Asked Questions which Formation Evaluation professionals have or get.

The project started as a community-built online reference which we had called  PPPEDIA, for PetroPhysics encycloPEDIA.  Subsequently the project was migrated to Wikipedia as a Wikiproject on Formation Evaluation.

For reference, here are some of the questions which we felt should be addressed:

  • Depth: which curve to use as reference?
  • How to structure a logging program?
  • How to structure a core analysis program?
  • How to structure a well log interpretation report
  • What remarks to put on the log header?
  • Rw catalogue for Western Australia?  (on-going)
  • Rw: methods for Rw in the hydrocarbon zone
  • Laterolog vs. Induction
  • Overview of versions and vintages of logging tools
  • Good practices: units, e.g. PU, W/W, V/V, G/CC, G/C3, etc
  • Overview of drilling mud names, additives, LCM
  • Log header: Time Since Circulation
  • Recommended log processing sequence
  • Definitions of porosity
  • How to edit logs?
  • How to determine the correct scales for N-D logs?
  • How to choose cutoffs?
  • Which GR do I pick as reference for the well?
  • What information to record during and after a logging job?
  • What does this mud additive / LCM do to my logs?
  • How to “integrate” core data to a log interpretation?
  • How to “normalize” log data?  
  • How to “normalize” core data?
  • What is this log mnemonic?
  • What is does this log parameter do?
  • What is “stick-and-pull” and what to do about it?
  • How accurate is MWD depth?
  • In what sequence was the log recorded?
  • Well / hole naming conventions?
  • How to define the required lab conditions for core analysis?