Former Labor MP Eddie Obeid will soon defend a criminal case over the issuing of a $30 million coal exploration licence.

In 2013, the Independent Commission Against Corruption (ICAC) found that Obeid and his family had made $30 million from a deal on their Cherrydale property in the Bylong Valley in New South Wales.

Obeid and his son Moses Obeid were charged with conspiracy last year, but a court order means the charges can only be revealed this week.

It only adds to the legal storm surging over Mr Obeid, who was recently convicted of misconduct in public office after he lobbied a senior public servant over Sydney cafe leases without disclosing his family's stake in the businesses.