That is a very good question. Unfortunately, looking at the list of industries available to choose from, I don’t see anything remotely close to petroleum engineering. Therefore, I recommend that you select either the general product-based business or general service-based business; depending on whether you sell more products or services in your business. Keep in mind that the industry selection just provides you with a basic chart of accounts list that you can customize to meet the specific needs of your company by adding accounts to the chart of accounts.
If you are using QuickBooks Online, check out the chart of accounts video tutorial below. It covers how to add, edit and delete accounts:
Best wishes for a prosperous 2018,