The original article comes from a site called ScotFact, which looks at data surrounding the Scottish independence debate.
In the conclusion to the piece, he author writes: "The most prolific example of a wrong conclusion drawn is a meme that began circulating in 2016 that suggests the ‘Unknown’ region in RTS is used by HMRC to mask the strength of Scotland’s Oil & Gas exports, and that the majority of the ‘Unknown’ Region’s exports were, in fact, Scottish Oil and Gas. A cursory examination of the headline numbers for 2015 should be enough to dismiss this. Using the pre-December 2016 methodology, total exports allocated to the ‘Unknown’ region were £22,862m. Of this, the Total Mineral Fuels allocation to the ‘Unknown’ region was only 8,826m. "