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