| Perupetro S.A., The Maple Gas Corporation del Peru, Sucursal del Peru, Blocks 31-B & 31-D, Exploration License, 1994 (Contrat Principal) |
| Perupetro S.A., Maple Gas Corporation del Peru S.R.L., Blocks 31-B & 31-D, Amendment, Exploitation License, 2014 |
| Perupetro S.A., Maple Gas Corporation del Peru S.R.L., The Maple Gas Companies, Limited, Blocks 31-B & 31-D, Amendment, Exploitation License, 2008 |
| Perupetro S.A., The Maple Gas Corporation del Peru, Sucursal del Peru, Blocks 31-B & 31-D, Amendment, Exploitation License, 2007 |