Directive 065: Resources Applications for Oil and Gas Reservoirs ...

Table 7.2. Production and volumetric form fields and values
Field
Description
Licence Number
UWI
ERCB/APPLICANT DATA
Producing Formation
Pool
Status
On Production Date
Last Month Produced
The well licence number.
From the drop-down list, the UWI to be used to enter production and/or
volumetric reserves information.
The name of the producing formation being applied for.
The name of the pool being applied for.
The current well status.
Perforated Interval(s) (measured in metres KB)
Perf Top
Perf Base
TVD Top
TVD Base
Initial Operated Day Rate
Current/Last Operated Day
Rate
Current/Last Calendar Day
Rate
Current WGR
Cumulative Gas/Oil Production
Cumulative Water Production
Cumulative Condensate
Production
Volumetric data
The date the well came on production.
The last date the well reported production.
The depth to the top of the first perforation in the producing formation.
The depth of the bottom of the last perforation in the producing formation.
The true vertical depth from the KB to the top of the first perforation.
The true vertical depth measured to the bottom of the last perforation.
The daily production rate based on actual hours of the first month in which
oil/gas is produced.
The daily production rate based on actual hours of the current/last month that
gas/oil is produced.
The daily production rate based on calendar days of the current/last month
that gas/oil is produced.
The current ratio of water production to gas production.
The total volume of gas or oil produced.
The total volume of water produced.
The total volume of condensate produced.
DSU Area
The area used to calculate the volume of oil/gas. This should be the standard
DSU size.
Net Pay
The average net pay thickness of the well, DSU, or pool, if available. For
horizontal wells, use vertical pay values.
Average Porosity
The average percentage of porosity in the reservoir.
Average Gas/Oil Saturation The percentage of gas or oil saturation in the reservoir.
Ti The initial reservoir temperature (K° = C° + 273.15).
Zi
The initial gas compressibility factor.
Pi
The initial reservoir pressure (kPa absolute).
Inverse Formation Volume
Factor
Coal Bulk Density
Gas Content
Original Reserves in Place
Pool Recovery Factor
Gas: Inverse Gas Formation Volume Factor.
1/(101.325*Zi*Ti/(288.155*Pi)) = 1/Bgi
Oil: The inverse of the initial formation volume factor for the oil in the reservoir
(1/Boi).
The density of the coal in situ (g/cc).
The amount of methane gas contained in a coal (cc/g).
Original gas/oil reserves in place.
OGIP (m 3 ) = A* h * ø * (Sg) * (1/Bgi)
OGIP (m 3 ) = A* h * Gas Content * Coal Bulk Density
OOIP (m 3 ) = A* h * ø * (So) * (1/Boi)
The current estimated percentage of recovery of the pool.
ERCB Directive 065: Resources Applications / Application for Special Well Spacing (October 2011) • 7-23