PDA Data Model

PROD_DECLINE_FORECAST

This table contains the information of an entire forecast. such as what entity forecast for, a well, pool, zone, or completion. what scenario it is belonging to, and what method is used. Effective/Expiry date for each forecast to clarify when this forecast is valid, and not valid.

PROD_DECLINE_SEGMENT

This table holds the individual segment parameter sets, along with the summary data for each segment.

PROD_DECLINE_METHOD_PARM

Use this table to capture the parameter settings for specific forecast segment.

R_DECLINE_METHOD

The method of decline curve analysis that is used in decline curve forecast. Such as Arps, Duong, SEPD, Power Law, Modified Arps, Customized.

R_DECLINE_CURVE_TYPE

The type of decline curve that is used in decline curve forecast calculations such as exponential, harmonic, hyperbolic, linear, etc.

R_DECLINE_TYPE

The type of decline that is used in decline curve forecast calculations such as nominal or effective percentage.

R_RATIO_CURVE_TYPE

The type of ratio curve that is used in decline curve forecast calculations such as linear, semi-log, log-log, etc.

R_RATIO_FLUID_TYPE

The type of ratio fluid that is used in decline curve forecast calculations for GOR, YIELD, etc.

R_DECLINE_PARM

Use this table to capture the parameters for any decline analysis method. This table may list a variety of parameter settings for each method, an actual analysis study method will use multiple parameters.

PROD_DECLINE_FORECAST_CLASS

This table contains classification information for forecast, such as status and authorized state.

R_FORECAST_CLASS

These classes may define the lifecycles states of the forecast (proposed, current, deprecated), the authorized state of the forecast (official, unofficial), the intent of the forecast (2005 budget, project proposal etc.) as well as other classification schemes.

R_FORECAST_CLASS_TYPE

This table defines the classification schemes that can be defined for and applied to forecasts.