I strongly recommend Merchants of Doubt [1], it's fairly clear what happened: learning from the "mistake" of the tobacco industry financing research, the oil industry understood that producing their own honest science was a liability, not a defense. The only way to avoid being held accountable for climate change was to sneakily but relentlessly attack science to discredit it. Keep the controversy alive. Seed doubt in the mind of people.

Not just regarding climate, virtually all of science. Science itself is the target. The overlap between climate change denial and COVID denial (for instance) is documented: same think tanks, same commentators. [2]

[1] https://en.wikipedia.org/wiki/Merchants_of_Doubt

[2] https://www.desmog.com/covidenial-executive-summary/