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

3.1.4 Determination of Commingling Process to Use
A determination of which commingling process to use—DE, SD, or the application process—
can be made using the decision tree in Figure 3.1.
3.1.5 Unsegregated Gas Production Within a DE
A DE is an ERCB-defined entity consisting of multiple stacked formations in a specific area
where there is an adequate understanding of the resources to allow commingled production of
these formations to be the standard development practice. The ERCB has established DEs
where commingled production of multiple pools over a large area is already occurring and
there is minimal risk that unsegregated production will negatively affect conservation or the
environment. A DE is administered as a single commingled pool by the ERCB, although
individual formation-based contributing pools within the DE will be identified on the
ERCB’s Board Order System (BOS). ERCB Orders No. DE 2006-1 and DE 2006-2 show the
geographic area and stratigraphic intervals for the two DEs that have been established. These
orders are available on the ERCB Web site www.ercb.ca under Industry Zone : Rules
Regulations Requirements : Management of Commingling.
If a licensee meets the requirements set out in Section 3.051(1) of the OGCR and in this unit,
unsegregated gas production from a DE may commence at a well without an application
being filed or an ERCB approval being issued. Each well commingled in a DE must meet all
DE requirements and report unsegregated production using the DE code.
ERCB Directive 065: Resources Applications / Commingled Production (October 2011) • 3-7