Notifications are only to be made to the licensees of abandoned wells that penetrate the zone or pool under review for injection activity.
The AER will update the enhanced recovery (ER) approval documents with the approved MWHIPs for schemes that have come under review because of amendment requests. A project to expedite this process by updating all ER scheme approvals to include MWHIP is under consideration.
Yes, the AER has started amending approvals for conventional as well as oil sands schemes. Where the approval holder is no longer a valid operator, the AER has rescinded the approval. This process only applies to disposal approvals; approval transfer applications are still required for ER approvals.
The information should be included in the application if its available. Where the information is not available, a statement should be included as to what the MWHIP should be and the reason why.
All approved injectors are required to be assigned an MWHIP before the start of injection operations.
A radius of notification is defined for each notification type in the notification guidelines section of Directive 065. These guidelines, however, only set out the minimum requirements.
The expectation is that applicants will apply due diligence in seeking out the well licensee and the relevant wellbore information. Applications should clearly state what was done to identify the licensee of abandoned wells and what was done to obtain the information about the wells. The AER will review applications on a case-by-case basis.
The AER will determine the risk potential of planned injection activity to neighbouring wells. If it turns out that the potential risks are real, then the applicant should present a plan to mitigate them.
All abandoned wells that do not meet the Directive 020 specifications and have not been so grandfathered should be referred to the AER for action. In all other cases, the AER requires that the applicant submit a mitigation plan that addresses the risks posed to the abandoned wells. The application may be denied if the applicant cannot come up with an acceptable risk mitigation plan for the abandoned wells.
Yes it is. The AER cannot have known risks ignored.
Proper abandonment means that the well was abandoned in accordance with the requirements at the time the well was abandoned. However, the AER expects an applicant to review, and will itself review, such a well to assess the residual risks to the proposed injection activity.
The expectation is that the operator who wants to conduct the injection activity will be responsible for that cost. An explanation of the risk should be presented to the AER with the mitigation plan.
The licensee of the abandoned well and the operator of the injection activity bear obvious liabilities. However, each case will be reviewed on its merits to determine liability.
The turnaround time is not expected to change.
The AER will review each application. Fracture stimulation treatment reports may be acceptable where the falloff period was long enough to capture the formation closure pressure and where the reports were interpreted by a qualified professional in that field. Alternatively, a step-rate injectivity can be carried out on the stimulated interval.
All injection wells are required to operate with an MWHIP. Injectors in a storage scheme are assessed and assigned MWHIPs. Notification is required in accordance with notification guidelines.
SPE 16798: System Design and Analysis of Step-Rate Tests to Determine Formation Parting Pressure, by P.K. Singh, R.G. Agarwal, and L.D Krose, Amoco Production Co.
It is currently parked because of feedback indicating that more work needs to be done to get it ready for release.
An analogue well can be used to make a case for all wells in a pool.
Directive 051 still has the MWHIP requirements because it has not been released in its amended form. Directive 065 now supersedes Directive 051 in all matters relating to the MWHIP requirements until the latter is released in its amended form. A Directive 051 application is still required for the validation of the well integrity aspects of a proposed injection well.
A project is underway to look at publishing service standards. With the transition to new and expanded notification guidelines, there may be some delays. The current service standard is 60–90 days.
Will the AER review the historical applications of the older schemes in a bid to determine the MWHIP requests made by industry?
All relevant sources of data and information are explored in the process of determining the approved MWHIP for each injector on each scheme approval. Where the Directive 051 approval cannot be found, the historical Directive 065 applications will be reviewed for information on the original MWHIP requests. MWHIP will be prescribed from the default table if the search does not yield the requisite evidence of the assignment.
The intent is to assess the risk that the planned injection activity may pose in and around an abandoned well. The expected dialogue with the abandoned well licensee will contribute to a common understanding of the potential risks that may need to be mitigated. This should result in a risk mitigation plan.
A letter of consent is not required.
Section 32 of the Responsible Energy Development Act states that any person who believes that they may be adversely affected by an application may file a statement of concern (SOC) with the regulator in accordance with the rules. The AER will, in all cases, apply the existing protocols to establish the technical relevance of the SOC.
This will be reviewed on a case-by-case basis, based on the risk associated with the disposal fluid and on the complexity of the conversion of surface pressures to reservoir pressures. When using AWS, the surveys must meet Directive 040 requirements.