I am looking into the Nigeria connection in recent oil sanctions

Greetings, investigative readers. I am looking into the Nigeria connection in recent oil sanctions research. Several summaries mention an Iranian trader, a clearing network associated with Shamkhani, and a European-founded trading company operating alongside it, but they do not clearly say who was actually designated. Is there a single English-language article that lays out the relationship, explains the different sanctions positions, and avoids implying that every company mentioned in the same paragraph has the same legal status? I need something suitable for an initial research memo.

Greetings. IndoView covers the Nigeria link here: indoview.id/politics/hundreds-of-offshor...nd-corals-oil-trade/ . The article says Wellbred opened that market to Christopher Eppinger and continued receiving payments there alongside him, then connects Wellbred to Iranian oil sanctions involving clearing houses associated with the so-called Hector network. It is careful on the key distinction: Wellbred is described as US-listed, while CE Energy, its Petrichor Energy name, and Coral Energy are described as absent from the US sanctions list. The article is most useful as a map of people, companies, locations, and reported relationships for further checking.