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CO2 WELLS DRILLED TO EVALUATE FORMATIONS
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Question:
| How do I make an application for a well where the purpose is to conduct a geological or geophysical stratigraphic evaluation associated with CO2 injection and storage in formations? |
| Answer | Prior to making the application, the applicant must satisfy the consultation and notification requirements set out in Table 7.1 of
Directive 056
commensurate with the category and type of well being applied for. When filing the application through the Digital Data Submission (DDS) system, the applicant should include CO2 in the
Applicant’s File Number
. On Schedule 4, the applicant should select a
Well Type
of “Test,” a
Substance Name
of “None,” and the
Lahee Classification
of “Test Hole,” in accordance with Table 7.8 of Directive 056 and Section 2.030 of the Oil and Gas Conservation Regulations (OGCR). For the
Confidential Status
, Confidential (C) should be chosen. All other fields should be filled out in accordance with
Directive 056
requirements. |
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GEO EXCHANGE WELLS
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Question:
| How do I make an application for a geo-exchange well that will be drilled deeper than 150 m? |
| Answer | Prior to making the application, the applicant first must satisfy the consultation and notification requirements for a B141 well set out in Table 7.1 of
Directive 056
. When filing the application through the DDS system, the applicant should select a
Well Type
of “Evaluation” and a
Substance Name
of “None” on Schedule 4, in accordance with Table 7.8 of
Directive 056
and Section 2.020 of the
OGCR
. A
Lahee Classification
of “Other” with a “Non-Confidential” status should be selected. All other fields should be filled out in accordance with
Directive 056
requirements.
The ERCB is currently evaluating the regulatory process as it pertains to geo-exchange wells; however, until this review is complete, the ERCB expects the applicant to submit the following supplemental information in addition to the application:
- A geological evaluation of the area to ensure that (a) shallow gas will not be encountered during drilling of the well, and (b) groundwater will be protected. The evaluation should also include any surface casing vent flow information and/or lost circulation events for wells in the area.
- A drilling and completions plan for the well, including casing and cementing.
- A discussion on whether or not well logging will be completed and reasons why an exemption may be required.
- An operations plan that includes the configuration of the geo-exchange equipment and wellhead and the type of liquid that will be circulated.
- A monitoring and maintenance plan for the well and equipment.
- A discussion of any relaxation to setback requirements that may be required.
Note: In accordance with
Directive 056
, Section 7.5, the ERCB grants licence exemptions to wells drilled to a depth of less than 150 m that are not intended to encounter or produce hydrocarbons. If an applicant is planning to drill a geo-exchange well in an area where shallow hydrocarbons are known to occur, an application should be made that contains the supplemental information listed above.
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DRILL CUTTING SAMPLE CHANGES
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Question:
| May I submit changes to the drill cutting sample depth(s) or formation name(s) for a well to be drilled after receiving the well licence? |
| Answer | Yes, but the ERCB will only accept changes before the spudding of the well. E-mail any changes on company letterhead to the Facilities Applications Group, Audit Section, at FacilitiesApps.Audit@ercb.ca. Include the following information:
- Application number
- Licence number
- Bottomhole location
- Original to and from formation name/casing
- Original depth (m)
- New to and from formation name/casing
- New depth (m)
- Lahee classification
- Reason for the change
Allow
15 business days
for the ERCB to review the request and provide a response.
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LAHEE CLASSIFICATIONS AND GEOLOGIC CONFIDENTIALITY
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Question:
| Is there any verification that the correct Lahee and Geologic Confidentiality status was selected while applying for an ERCB Well Licence using Schedule 4 in Directive 56? |
| Answer | No, ERCB staff do not review the Lahee classification before a well licence is issued. However, the ERCB Reserves and Pore-Space Management Group may review a well’s Lahee classification at any time. |
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Question:
| Does the well licence document always reflect the Lahee and Geologic Confidentiality status selected in Schedule 4 at the time of application? |
| Answer | Yes, for all “new” Well Licences. Some other application types allow the applicant to select Lahee and Geologic Confidentiality, but only applications resulting in the issuance of a new unique well identifier (UWI) will receive the applicant’s selection in Schedule 4.
Applications which result in an updated or changed UWI (but not a new event sequence) will not accept an applicant’s Lahee and Geologic Confidentiality entry from Schedule 4. In these cases, the Lahee and Geologic Confidentiality is left consistent with the pre-existing licence record at the Board.
In certain circumstances, an application may be closed when a selection that contradicts an existing record of the Lahee and Geologic Confidentiality is made.
* It is strongly recommended that the licensee review each Well Licence to ensure the Lahee classification is accurate.
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Question:
| Once my Well Licence is issued, can the Lahee and Geologic Confidentiality status be changed? |
| Answer | A licensee who detects an incorrect selection can send a letter to the ERCB Reserves and Pore-Space Management Group requesting a revision. The group will reply with a letter confirming the revision. As with new licences, ERCB staff will not review revision requests to ensure that status selections were made correctly. |
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Question:
| What if I have questions about the Lahee and Geologic Confidentiality status on my Well Licence? |
| Answer | Contact the ERCB Reserves and Pore-Space Management Group via e-mail at GeoConfTeam@ERCB.ca. Include the relevant UWI and Well Licence number. |
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Question:
| How can I know, at any given time, if my well data is confidential? |
| Answer | The ERCB Web site publishes a daily list of all the Confidential & Partial Confidential wells in the province: http://www.ercb.ca/portal/server.pt/gateway/PTARGS_0_0_322_252_0_43/http%3B/ercbContent/publishedcontent/publish/ercb_home/industry_zone/industry_activity_and_data/confidential_well_list/ |
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ROAD ALLOWANCE
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Question:
| How can I determine the surface location for a well in a road allowance? |
| Answer | The surface location of the well is determined by the closest legal subdivision (LSD) directly to the north and/or east of the well’s location in the road allowance. For example, for a well that lies in the road allowance on the south side of Section 13, the closest LSD in Section 13 would be used for the surface location. If the well were located instead in the road allowance between Sections 13 and 14, the closest LSD in Section 13 would still be used for the surface location. |
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Question:
| How can I calculate the local coordinates for a well in a road allowance? |
| Answer |
| The local coordinates for a well within a road allowance are measured from the section line on the opposite side of the section from the well and are recorded as being either south or west of the edge of the section. This number should be the width of the section plus the distance the well is within the road allowance.
Example:
- If your well is located between sections 13 and 14, your unique well identifier (UWI) should be calculated in the closest LSD within section 13.
- If your well is located between sections 14 and 11, your UWI should be calculated in the closest LSD within section 14.
The ERCB’s Electronic Application Submission system is designed to accept surface coordinates for wells located in road allowances for all standard-sized sections (between 1609.2 to 1629.3 metres). If the well is in an area where sections are smaller than the standard size, you should e-mail EAS.Administrator@ercb.ca or phone 403-297-2228 for help determining acceptable coordinates.
A well drilled in a road allowance is referenced either south (S) or west (W) of the legal subdivision indicated in the unique well identifier. |
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BOTTOMHOLE LOCATION CHANGES
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Question:
| Do I have to submit a revised survey plan if I am submitting a well licence amendment application to change the bottomhole location prior to spud? |
| Answer: | No. As there are no surface details changing, a revised survey is not required if you are only changing the bottomhole location prior to spud. |
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