The IRS Form 8904, Credit for Oil and Gas Production From Marginal Wells is not supported by TurboTax
Go to this IRS website for the Form 8904 - https://www.irs.gov/forms-pubs/about-form-8904
Once you complete the Form 8904 enter the result from Line 8 on the Form 3800 Line 1bb in Part III
You will have to print and mail your tax return to include Form 8904 with the return.