|
Tab
|
Item
|
Description
|
|
Data
|
Production stream
|
Selects monthly production stream (oil, gas or water)
|
|
Include Historical Cum (Year 0)
|
Includes production prior to recording monthly values. Stored in year zero (0).
|
|
Use Alias
|
Use aliases when needed.
|
|
Time
|
Compute for Constant Date Range
|
computes the statistics over a specific timeframe, specified by the "From" and "Through" entries to the immediate right.
|
|
Compute for Zone Date Range
|
This option computes the statistics over the timeframe specified by a "From Zone Item" and a "Through Zone Item." Unlike the "Compute for Constant Date Range", this option can compute a different range for every well.
|
|
Compute for Months
|
This option computes the statistics over range in the life of the well, specified in number of months. As an example, setting this to 3 and 6 will calculate the statistics from the third to sixth months of production for each well. Since this option looks at the individual life of each well, rather than a specific date, this can be useful for comparing life cycle production from well to well
|
|
Compute for First
|
Computes the statistics over the first specified number of months of production data. Note that this option can be limited to producing months only, rather than including non-productive months that can bring down the average production.
|
|
Compute for Last
|
Computes the statistics over the last specified number of months of production data. Note that this option can be limited to producing months only, rather than including non-productive months that can bring down the average production.
|
|
Use Time Period When Prod is At Maximum Value
|
Calculates production statistics for a set number of months around the highest production.
|
|
Use Time Period When production is At Minimum Value (non-zero)
|
Calculates production statistics for a set number of months around the lowest non-zero individual production value.
|
|
Range for Min-Max Period in Months
|
Sets the range for the or the "Time Period" ranges. As an example, setting this option for 6 with a "Use Time Period When Prod is At Maximum Value" will calculate the statistics over the interval 3 months before and after the highest producing month.
|
|
Method to Determine Min-Max Prod
|
·Cum Prod Within Range
·Max or Min Prod Within Range
|
|
Cum Prod
|
Compute Cumulative
|
Enables or disables the cumulative production summation. When this option is enabled, Petra will store the cumulative production to the specified zone data item.
|
|
Store NULL Value
|
Stores zero cumulative production values as null values.
|
|
Store Zero Value
|
Stores zero cumulative production values as zeros.
|
|
Avg Prod
|
Compute Average Rate
|
This option enables or disables the average rate computation. When this option is enabled, Petra will store the average rate to the specified zone data item.
|
|
Store NULL Value
|
stores zero average values as null values.
|
|
Store Zero Value
|
stores zero average values as zeros.
|
|
Compute Single Monthly Average
|
computes a simple average monthly production rate with total production divided the total number of months.
|
|
Compute DAILY Average using Days per Month
|
Computes a daily average monthly production rate by dividing the average monthly production by the number of days in a month.
|
|
Compute Daily Average Using "DAYS ON" Production
|
The Days On stream simply records the number of days of production in a month. This option computes the daily average by dividing the production stream by the number of days of recorded production. This option can be more accurate, given good records.
|
|
DAYS ON Production from
|
Sets the "Days On" production stream for the "Compute Daily Average Using "DAYS ON" method.
|
|
When DaysOn Values Are Missing
|
This option controls how the tool handles missing "Days On" values. This tool can either skip the month (which can skew the statistics), or use the number of days in the month (which effectively assumes full production).
|
|
High-Low
|
Compute Highest Production Rate
|
This option stores the highest production rate over the range specified on the Time tab to the zone data item specified below
|
|
Compute Lowest Production Rate
|
This option stores the lowest production rate over the range specified on the Time tab to the zone data item specified below.
|
|
First-Last
|
Store Date of First Prod
|
This option stores the date of first production to the zone data item specified below.
|
|
Store Date of Last Prod
|
This option stores the date of last production to the zone data item specified below.
|
|
Store Cum at First Prod Date
|
This option stores the cum at the first production date to the zone data item specified below.
|
|
Store Cum at Last Prod Date
|
This option stores the cum at the last production date to the zone data item specified below
|
|
Capture
|
Do Not Compute Total Years
|
This option disables the year calculation
|
|
Total First To Last Month Produced
|
This option Check this option to count all months beginning with the first month of production to the last month of production.
|
|
Total Productive Months Only
|
Check this option to count all months beginning with the first month of production to the last month of production but months of zero production will not be included.
|
|
Total First To Last Produced
|
Check this option to count whole years beginning with the first production value through the last year of production.
|
|
Capture Number of Days of Production
|
This section will capture and store the total number of days used to compute the daily average production rate.
|