Minerals Report - International Seabed Authority

in the CIS) is 260 Tm 3 . Oil resources in the CIS are likewise
underestimated. In addition, the American estimates did not take into
account the deep-sea (outside the continental shelf) offshore resources.
The aggregate initial total in-place hydrocarbon resources in the
deep-sea areas of the World are estimated at about 200 Gt, including more
than 110 Gtoe liquids and 85 Tm 3 non-associated and solution gas.
The recoverable portion of these resources was determined with
reference to the world’s actual average liquids and gas recovery factors of
approximately 30% for oil and solution gas; 65%, for condensate; and 80%,
for non-associated gas.
Using these recovery factors of various hydrocarbon types, the
recoverable oil and gas resources of all petroliferous basins were
estimated. The aggregate ultimate recoverable hydrocarbon resources in
the deep-sea areas of the world were estimated as 99 Gtoe, including 36 Gt
oil and condensate and 63 Tm 3 non-associated and solution gas.
The initial recoverable deepwater offshore oil and gas resource
distribution by ocean and by geographic region is given in Tables 1 and 2
and Figure 5.
Figure 5: Geographic distribution of the initial total deepwater recoverable oil and
gas resources
INTERNATIONAL SEABED AUTHORITY 495