From Fillippone's post
Exxon started with a few tests in North Dakota in partnership with Crusoe Energy (Winklevii have invested in it), but they are now expanding to Alaska, Nigeria, Argentina, Guyabbaa and Germany.
There is still gas flaring ongoing in Nigeria even though it was something that we heard will stop since like 2020, so maybe ExxonMobil were not able to make any progress with it.
I also saw from some websites that they are considering expanding the project to these nations. Maybe they didn't go on with the project after analyzing the business. I have some contacts who reside close to the Exon Mobil Qua Iboe Terminal in Nigeria and they have confirmed that such a project is non-existent. Any project that could help recycle waste or pollutants will be highly appreciated because it will reduce the negative impact, and create jobs and revenue sources.
The problem is the little challenges that may be felt in the aspect of mining using this new technology and the way to set up the infrastructure for the use, you have to agree with me that using a new process for the mining will take little more of efforts and time for evaluation before the conclusion for the overall release on the usage, so this may take more time than expected and there is more likely possible means that the channels and the technical ways to achieve this on a global range might not have been concluded yet, but its something that will reduce and ease the demand on energy consumption from the centralized government bodies.
ExxonMobil is a multi-billion-dollar business that can afford the cost of experimenting, buying the necessary equipment and hiring the best manpower to make the project successful. In the case of Nigerian government policy might have affected the project because the government in power in 2022 was unfriendly with Bitcoin. Or maybe they are still in the development process.