Age | Unit | Sample | TOC (%) | Other |
Pliocene/late Miocene | Tipam, Boka Bil, U Bhuban | Beani Bazaar-1 well, Rashidpur-3 well | 0.2 - 1.5 | HI 104 - 225 mg/g |
Mid-Miocene | L Bhuban | Adamtila-1 well (India) | 1.76 (avg) | 2 - 3 mg/g (avg), Rock-Eval S2 |
Mid-Miocene-Oligocene | Atgram, Renji, U Jenam? | Atgram-1 well plus wells in Surma Basin | 0.4 - 1.2 | HI to 155 mg/g, marginally mature |
Oligocene | U Jenam | outcrop | 1.4 - 2.7 | HI 121 - 166 mg/g, Up to 0.15% extractable hydrocarbons |
Eocene-Paleocene | Kopili, Cherra | outcrop | up to 16 | gas prone |
Tertiary | Undifferentiated | Titas-1 well | 0.45 - 3.60 | 100% humic organic matter |
Mesozoic | Gondwana | surface and subsurface | up to 60 | gas prone |