Oil and gas properties and other property plant and equipment are stated at cost, less
accumulated depreciation and impairment losses.
Cost includes expenditure that is directly attributable to the acquisition of the asset.
The cost of self-constructed assets includes the cost of materials, contractors’ costs and direct labour, any other costs directly attributable to bringing the assets to a working condition for their intended use, the costs of dismantling and removing the items and restoring the site on which they are located, and capitalised borrowing costs. Purchased software that is integral to the functionality of the related equipment is capitalized as part of that equipment.