Declaration of Identified Greenhouse Gas Storage Formation Cliff Head

Overview

The Offshore Petroleum and Greenhouse Gas Storage Act 2006 was enacted to establish a framework for the regulation and administration of offshore petroleum activities and greenhouse gas storage in Australia, addressing a legislative gap in the management of carbon capture and storage. This Act aims to ensure environmentally sustainable practices while facilitating the development of offshore resources. The legislation was introduced by the Commonwealth Parliament with the objective of providing a comprehensive regulatory regime that balances economic development with environmental protection, particularly in relation to greenhouse gas storage. The Act empowers the responsible Minister to declare specific areas as identified greenhouse gas storage formations, as evidenced by the declaration of the Cliff Head Storage Formation on 10 June 2024 by Hon. Madeleine King MP, Minister for Resources and Northern Australia.

Scope and Application

The Offshore Petroleum and Greenhouse Gas Storage Act 2006 applies to the identification and regulation of greenhouse gas storage formations, with this particular declaration concerning the Cliff Head Storage Formation. This Act operates under the Commonwealth jurisdiction and applies to the designated storage formation within the specified geographic area. The declaration by the Hon. Madeleine King MP identifies the Cliff Head Storage Formation as suitable for the storage of greenhouse gases, with a maximum capacity of 13.4 million tonnes, predominantly CO2. The Act encompasses various aspects such as the amount of greenhouse gas suitable for storage, the injection points, the duration of injection, necessary engineering enhancements, and the sealing features of the formation. This legislation provides a framework for the management and regulation of offshore petroleum and greenhouse gas storage activities within Australia, ensuring that suitable formations are identified and managed effectively to mitigate greenhouse gas emissions. The Act also allows for the extension of its application through subordinate instruments, ensuring flexibility and comprehensive regulation of the designated formations.

Key Provisions

The main operative sections of this legislation, as declared by the Minister for Resources and Northern Australia, involve the identification of a specific block as an identified greenhouse gas storage formation. This declaration (section 312(14)) is made under the Offshore Petroleum and Greenhouse Gas Storage Act 2006 (the Act). The block in question is named Cliff Head, located in the Perth map sheet SH50, and encompasses Block Nos. 1235. The Act defines key terms and incorporates other related legislation, ensuring a comprehensive legal framework for the regulation of greenhouse gas storage. The obligations and requirements imposed by this Act on the parties or entities involved include adherence to the specified suitability determinants for the Cliff Head Storage Formation. These determinants are detailed in the declaration and include the amount of greenhouse gas (GHG) suitable for storage (maximum storage amount of 13.4 Mt), the composition of the GHG (greater than 95% CO2), the injection point (approximately 3.2km south of the Cliff Head production platform), the injection period (10-20 years), and the engineering enhancements required (such as plug and abandon of intersecting wells and ongoing management of reservoir pressure). The effective sealing feature of the storage formation is also specified, which involves a combination of saline aquifer-structural trapping below the Triassic Kockatea Shale seal. For breaches of the provisions outlined in the Act, there are potential civil and criminal consequences. While the specific offences and penalties are not detailed in the provided text, the Act typically includes provisions for fines, imprisonment, or both, depending on the severity and nature of the breach. The maximum penalties would be outlined in the Act itself, reflecting the seriousness of non-compliance with the regulations governing greenhouse gas storage. It is crucial for parties and entities governed by this legislation to fully understand and comply with the outlined requirements to avoid these potential consequences.