There are three different ways in which data is stored in PHDwin.

Unqualified Data

•All case identifying information including:

oEverything on General Info form – including the major phase of the case, etc., except reserve classification.

oAll ID codes

•Historical production data, including:

oMonthly Production

oDaily Production

oProduction Tests

oWellbore Completion Data

•The unit convention set for each case

•The currency units for each case

Scenario-specific

•Set of cases

•Report display and discounting settings

•Fiscal Models that are applied to each case and static variable values

•Inter-case relationships

oIncremental links

oRecompletion links

oGroup case parent/child links

•Eco Options

oStart Date

oCase Life

oMax Eco Years

oDiscount Factor

oKill Date

oCutoffs

oVolume exclusions

oVolume multipliers

•Product precedence

Qualified

•Prices – Base Price, Escalations, Differentials, BTU factor

•Expenses – Operating Cost, Well Cost, Fixed Cost, Transportation Cost, Other Costs

•Investments – Drilling, Exploration, Completion, Workover, etc. Investments

•Ownership – Working Interest, Revenue Interest, Royalty Interest, Lease NRI

•Shrinkage – Shrinkage Percent

•Projections – Phase configuration, b factor, Dm

•PRMS – Reserve Class, Categories, and Subcategories.