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

Requirements
Comments
d) a tabulation of your interpreted net pay,
porosity, and water saturation for each
well in the pool, along with the cutoffs,
methodology, formulas, and constants
used.
2) Your evaluation of the oil and gas reserves
for the pool, including
a) an estimate of the initial oil volume and
gas volume in place,
b) an estimate of the oil and gas recovery
factors,
c) a description of the methods used in
determining (a) and (b) above (e.g.,
material balance, volumetric analysis,
model study, and a comparison of
analog pools), and
d) the supporting data used in determining
(a) and (b) above and the sources of the
data (e.g., pressure/volume/temperature
[PVT] properties and source, pressure
data and source).
The size of oil and gas cap reserves affects
depletion strategy, EOR feasibility, and gas
conservation economics.
The stage of depletion of the pool may influence
the ERCB’s decision and should be discussed
where appropriate.
If there are sufficient pressure, production, and
PVT data, you should do a material balance
evaluation and compare it to the volumetric
results.
Failure to provide information on the calculation
methods and supporting data will delay
processing of your application.
It is not necessary to provide production plots
for the wells, except to illustrate a particular
point or issue (e.g., decline analysis, specific
well performance issues).
3) A discussion and analysis of why
waterflooding or some other form of
enhanced oil recovery (EOR) is not feasible
for this pool. This should include
a) your screening criteria and supporting
calculations and data,
b) if EOR was found to be technically
feasible but uneconomic, your economic
evaluation and supporting data, and
EOR evaluation is a critical part of any GPP
application, and processing delays will result if
it is not done properly. If the ERCB agrees that
the pool is a single-well oil pool with no
potential for expansion or further drilling or is in
good
communication with a fully active aquifer
system, EOR will not be an issue.
If EOR is considered feasible, GPP will be
denied pending implementation of EOR.
c) if numerical simulation was used, a
description of the model, the input data,
results of history matching, cutoffs used
for each case, descriptions of the cases
run, and summaries and analyses of the
results.
ERCB Directive 065: Resources Applications / GPP, GOR Penalty Relief, and Special MRL (October 2011) • 3-33