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

Figure 3.4. Decision Tree to Determine If the Proposed Commingling Is a Candidate for
Self-Declared Oil Commingling in a Well
1. If there are any perforations above the base of groundwater protection, is it anticipated that
there would be water production equal to or greater than 5 m 3 /well/month from all the intervals
in the well? See Explanatory Note 3.
YES
NO
2. Are there any water wells within a 600 m radius with a total depth less than 25 m from the
top of the perforations of the well proposed for commingling? See Explanatory Note 4.
NO
3. Does the proposed commingled production stream contain any H 2 S?
See Explanatory Note 5.
NO
4. Does the reservoir pressure in any of the pools or intervals proposed for commingling
exceed 90% of the lesser of the closure or breakdown fracture pressure of any of the other
pools or intervals proposed for commingling (pressure adjusted for gas and liquid gradients if
necessary)? See Explanatory Note 7.
NO
5. Are there any unresolved equity issues with respect to the intervals proposed for
commingling? See Explanatory Note 8.
NO
6. Is the well in a designated oil sands area or in a pool that overlaps a designated oil sands
area? See Explanatory Note 9.
NO
7. Are any of the pools or intervals proposed for commingling subject to any existing or
proposed enhanced recovery schemes? See Explanatory Note 10.
YES
YES
YES
YES
YES
YES
NO
8. Does the proposed commingling mix oil and nonassociated gas? See Explanatory Note 11.
YES
NO
9. Do the oil pools proposed for commingling have different rate administration? See
Explanatory Note 12.
YES
NO
10. Do any of the oil pools proposed for commingling have associated gas caps that have not
been approved for concurrent production? See Explanatory Note 13.
YES
NO
11. Do any of the pools proposed for commingling (any combination of new completions and
existing producing completions) have wells capable of producing a commingled flow rate
greater than 3 m 3 /d? See Explanatory Note 14.
YES
NO
Commingling from the intervals may proceed without any ERCB approval.
Notice of commingling must be given to Freehold owners and well licensees, as indicated in
Explanatory Note 8.
Production must be reported through the Petroleum Registry of Alberta using the appropriate
SD code.
File an application in
accordance with
Section 3.1.8 of
Directive 065.
Data requirements in accordance with Sections 11.005, 11.040, 11.070, 11.102, 11.140, and
11.145 of the OGCR and Directive 040 must be met and are subject to audit.
ERCB Directive 065: Resources Applications / Commingled Production (October 2011) • 3-13