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

An analysis of all data provided in support of an application must also be submitted with the
application.
Applications for special well spacing must clearly meet the criteria in Section 5.190(3) of the
OGCR to establish special well spacing, and the information provided must clearly support
the entire area of application. Applications that do not contain information to meet the criteria
for special well spacing or that contain minimal or insufficient information to support all
applied-for lands will be closed.
All data provided in the application must be presented in International System of Units
(SI). Applications containing information not in SI units will be closed.
7.3.3 Production Information and Volumetric Reserves Requirements
7.3.3.1 Commingled Production
The minimum regulatory requirements for well testing within a development entity (DE) do
not provide for production information necessary to properly assess the optimum spacing for
a specific pool or formation. When commingling production in an area where increased well
densities are needed, collection of appropriate production and reservoir data is required to
support changes in well spacing.
When applying for special well spacing in areas where commingled production has been
approved or is occurring within a DE, an applicant must provide production information for
each formation/pool being applied for. Segregated production data are best, but where
formation-specific production information is not available, other sources or means of
determining production information may be used (e.g., allocation of production contributions
derived from spinner log surveys; production from nearby control wells).
The applicant must ensure that the correct well spacing is in place for all producing
formations/pools within a DSU where commingled production is occurring.
7.3.3.2 Production Information Requirements
Production information for each applied-for formation or pool is required for applications
proposing a change in well spacing. Selected wells must represent the typical performance
within and/or surrounding the application area and have production from the formation,
substance (i.e., oil or gas), and production source (i.e., sands or coals) being applied for.
Where an applicant plans to develop using horizontal wells, the information provided in
support of the application must be from horizontal wells or the applicant must provide a
discussion explaining how the vertical well data used in the application supports the proposed
horizontal development. All applications for both vertical and horizontal development must
include a discussion of the provided production data explaining how that data supports the
proposed spacing change.
All production information supplied in support of an application must be provided using the
EAS Production Form. Consider the following when filling out a Production Form:
• The Production Form allows for auto-population of ERCB production data upon entering
a well licence number and selecting the Unique Well Identifier (UWI) applicable to the
application.
• ERCB production data should be revised in the Applicant Data section of the form if the
auto-populated data are not current or correct.
7-12 • ERCB Directive 065: Resources Applications / Application for Special Well Spacing (October 2011)