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

Along with the stage of reserves recovery, the value of the bubble point or dew point relative
to the current and proposed operating pressures is an important consideration when
evaluating an ER scheme.
Reserves Data Attachment
Estimates of the oil and gas reserves, including
1) the initial oil and gas volumes in place for the ER scheme area,
2) the oil and gas recovery factors under the existing depletion mechanism and under the
proposed ER scheme,
3) the recoverable oil and gas reserves for the scheme area,
4) the reservoir area, average net pay, average porosity, and average water saturation for oil
and gas in the scheme area,
5) a description of the methods used in determining the estimates for (1) and (2) above (e.g.,
material balance, volumetric analysis, model study, a comparison of analog pools, and
sweep and displacement efficiencies), and
6) for gas cycling schemes, the initial propane, butane, and condensate in place converted to
liquid volumes.
A fundamental service that the ERCB provides to all stakeholders is maintaining reserve
estimates for all pools in Alberta.
A nominal level of reserves information is required in ER scheme applications, and more
detail may be required for applications involving more complex ER processes. As well,
additional information may be requested during the application review, after approval, or
during a future audit.
Licensee Concerns Attachment
If there are any unresolved concerns from a well licensee, provide an attachment that includes
the following:
1) contact information for the well licensee that has unresolved concerns/objections,
2) a copy of the notification letter provided to the well licensees,
3) a list of any other documents distributed,
4) a copy of written concerns and objections received, or if not available, a summary of
issues,
5) a chronology of any discussions conducted with the well licensee(s),
6) a discussion of how the applicant would like the ERCB to proceed with the application,
and
7) any steps taken to mitigate the unresolved concerns and objections and the applicant’s
response to the concerns.
Isopach Map Attachment (for new ER schemes and significant area amendments)
An isopach map of net oil and/or gas pay showing
1) location of the initial fluid interfaces (gas-oil, gas-water, oil-water), and
2) location and current status (indicated by well symbols) of each well within and offsetting
the proposed approval area.
ERCB Directive 065: Resources Applications / Enhanced Recovery Scheme (October 2011) • 2-17