Table Performance Type

Use this option to define the performance curve selecting one reference parameter (cumulative production/injection or elapsed time) and calculating the main fluid (and optionally secondary fluids) as a function of it by means of a table. You can use either dimensional or dimensionless values, and choose between cumulative, instant rate and average rate data for the calculated values. Intermediate values are calculated using linear interpolation in the Rate/Time space.

The table shows first the independent column with the reference parameter, and then one dependent column for each fluid calculated as a function of it.

Independent column: Select the base parameter:

• Time: Time elapsed since the well first went online.
• Cum: Cumulative production/injection of the well so far.

Data type: Select the input format for defining fluid performance curves:

• Cums: Enter cumulative values for the elapsed time given by the independent column. Only available for time-dependent curves.
• Instant Rates: Enter rates corresponding to the exact point given by the independent column.
• Average Rates: Enter the average rate of the range between a row and that in the preceding (not the following) row. In the first row, the value is the average between 0 and the production corresponding to the range.

Make dimensional / Make dimensionless: Switch between using dimensional (i.e., with specific Units) and dimensionless (with ratios) values in all the columns of the table (except for the Time parameter, which is always dimensional).

Add component / Remove component: Add/remove fluid components in order to enter a performance for each. Only enabled when the Well behaves as an isolated reservoir option in the is activated.

Oil / Gas, Water, Total Liquid: Enable/disable secondary fluids. The parameter for each depend first on the Data type selected: cumulative data require total values, whereas rate data require initial and/or instant rate values. All fluids can be entered as a column in the table - that is, based on the Independent column - or as a single base value. For all values not entered as a column in a dimensional table you need to enter a base value, which in the case of dimensional tables is the final value, and in the case of dimensionless tables will be multiplied by the factor in the table to obtain the final value. The base value in turn can be either absolute or relative to the main fluid by means of a ratio.

This table summarizes the parameters specific to each secondary fluid ( gas, Oil, Water and Total Liquid):

			Absolute Base Value	Ratio	Dependent base value relative base value
Cum	Dimensional	Tabular		-	-
		Single	Gas Instant Rate Oil Instant Rate Water Instant Rate	GOR Oil Yield WC () Water Yield () -	GOR Oil Yield WC () Water Yield () Total Liquid Yield
	Dimensionless	Tabular	Total Gas Cum Total Oil Cum Total Water Cum	GOR Oil Yield WC () Water Yield () -	Total GOR Total Oil Yield Total WC () Total Water Yield () TL/O
		Single	Gas Instant Rate Oil Instant Rate Water Instant Rate Total Liquid Instant Rate	GOR Oil Yield WC () Water Yield () TL/O	GOR Oil Yield WC () Water Yield () Total Liquid Yield
Rate	Dimensional	Tabular		-	-
		Single	Gas Instant Rate Oil Instant Rate Water Instant Rate	GOR Oil Yield WC () Water Yield () -	GOR Oil Yield WC () Total Water Yield () Total Liquid Yield
	Dimensionless	Tabular	Gas Rate Oil Rate Water Rate	GOR Oil Yield WC () Water Yield () -	GOR Oil Yield WC () Water Yield () TL/O
		Single	Gas Instant Rate Oil Instant Rate Water Instant Rate	GOR Oil Yield WC () Water Yield () TL/O	GOR Oil Yield WC () Water Yield () Total Liquid Yield

Max Total Liquid Rate ( Oil producer) / Max Gas Rate ( Gas producer): Check this box to set a maximum for the total liquid (oil + water) or gas the well can produce or, by un-checking the Absolute checkbox, at a certain percentage of the initial rate. In effect, then, it models a mechanical limit to the well's potential production independently from reserves or pressure drives, and in effect works similarly to a choking produced by a constraint in the facility that receives its production.

Abandon when last row is reached (injectors only): Check to abandon the well the moment the injection curve reaches the last row of the table. If left unchecked, the well will maintain the last value indefinitely.