PHDWin Crash Course: Part 3

Creating Reserves Reports with PHDWin Software (Part 3)


Part three of our in depth engineering training on how to generate oil and gas reserves reports on PHDWin Software by our lead petroleum engineer, Kurt Mire. This segment is perfect for students and other industry professionals looking to understand more about oil and gas evaluations and how to put theory into practice with PHDWin Software!

Training Topics Table Of Content

  1. NGL’s & Shrinkage (Continued From Part 2):
    1. Applied Gas Shrinkage And NGL Yields To Wells In PHDWin Software (_)
  2. Reserves Categories:
    1. Types Of Reserves Classifications (_)
    2. Types Of Reserves Classes (_)
    3. Examples Of Classes & Categories (_)
    4. Specifying Reserve Classes & Categories In PHDWin Software (_)
    5. Difference Between Reserves And EUR [Estimates Ultimate Recovery] (_)
    6. Types Of Reserves Categories (_)
  3. Decline Curve Analysis:
    1. Performing Decline Curve Analysis On PHDWin Software (_)

Link To Full PowerPoint


PHDWin Software Crash Course Part 3 Study Guide

1.) Reserves Categories

Deterministic Reservoir Classes:

• Probable – Likely (It’s probably there / it’s probably this big)

• Possible – Could be there / could be this big

• Proved – Best estimate / High confidence

Probabilistic Reservoir Classes:

• Proved – High confidence (P90)

• Probable – Most Likely (P50)

• Possible – High side volumes (P10)

Reserves Categories:

• Behind Pipe

• Undeveloped

• Non-producing

• Producing

Common Examples Of Reservoir Class & Category:

• PDP (proved developed producing)

• PDNP (Proved developed non-producing)

• PBP (Proved behind pipe)

• PUD (Proved undeveloped)

Less Common Reservoir Examples:

• (PrNP) Probable non-producing

• (PrBP) Probable behind pipe

• (PsUD) Possible undeveloped

What’s the difference between Reserves and EUR (Estimated Ultimate Recovery)?

• EUR is the ultimate amount of oil & gas that will be produced over the life of a well.

• Reserves are volumes of oil and gas that are left to produce.

• You have to know “as of date”

What are some of the types of reserves?

• Condensate

• Associated gas

• Non associated gas

• NGLs (natural gas liquids)

• Crude oil

2.) Decline Curve Analysis

Creating Type Curves:

• Select wells based on appropriate criteria

• Review & cull the production data

• Don’t use any data after reaching 50% of the well count

Contact Us With Any Questions You May Have!

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