RE: A simple calculation24 Oct 2021 11:06
You'll no doubt be pleased to hear that this is (probably) my last word on this vexed subject. There's a fairly significant accounting matter to consider if you want to estimating a company's project profitability. It will differ from company to company, even for Wressle, as it will depend on the costs that each company has "capitalised" so far. This will determine the future "write offs" in each company's Profit & Loss accounts once the field is producing. It's sometimes called DD&A, which stands for "depreciation, depletion and amortisement",and it makes things more a bit more complex. To estimate it properly, we would need to know what percentage of the capital expenditure (this will most likely include the successful well costs and all the development costs) will be written off each year by the company. This is usually done on a "unit of production basis". For example, if the expected recoverable reserves are 5 million barrels and they cost £15 million to find and develop to date, that's a development expenditure (devex) of £3 per barrel. So far so good, I hope. If, in a particular year, 1 million barrels of oil (which is 1/5 of the reserves) are produced, each company will most likely write off its percentage share of 1/5 of the £15 million development costs. This will be 1/5 of whatever costs they have "capitalised" so far. In my example this will be £3 million multiplied by the company's % interest in the project. There may, of course, be further capital expenditure once the field has started to produce commercially. This would have to be added in to the capital cost pool and it will have the effect of increasing the annual write off on a "per barrel" basis unless further reserves are found as a result of the additional expenditure.
Aren't you glad you're not an accountant? And my apologies if you are! GP