https://en.wikipedia.org/wiki/Abiogenic_petroleum_origin
I think a case can be made for abiotic process contributing to natural petroleum production. Read
https://www.amazon.com/Deep-Hot-Biosphere-Fossil-Fuels/dp/0387952535/ref=sr_1_1?crid=3NQL9Y9PEX7EM&dib=eyJ2IjoiMSJ9.qezhJI74w7iiiUgBo1b_xw.v_E_BphEpVbPbZyrdN0DVNDK0yro6MZvCULswd2oADw&dib_tag=se&keywords=the+deep+hot+biosphere+thomas+gold&qid=1753901439&sprefix=hot+deep+bio%2Caps%2C122&sr=8-1
I draw a line at it producing coal. For one thing there are fossils in coal. (maybe anthracite!)