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Directive 040: Pressure and Deliverability Testing Oil and Gas Wells

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Release Date: March 25, 2024

Effective date: March 25, 2024
Replaces previous edition issued August 24, 2022
See section 1.2 of the directive for what’s new.

Purpose of this Directive

This directive sets out requirements for pressure and deliverability tests, drill stem tests, fluid sampling and analysis. It is intended to serve as a handbook for anyone testing oil and gas wells, regardless of their experience. However, test quality will improve if licensees/operators use properly trained personnel, and take care in designing, conducting, analyzing, and reporting their tests.

Note that the well testing requirements defined in this directive are minimum requirements, and the AER may require testing that exceeds these requirements. In addition, for specific geological zones within a defined area, the AER may adapt subsurface directive requirements through a subsurface order to better suit the resource development practices being used.

PAS file formats (updated July 10, 2023) [PDF] [XLS]