Geology Reference
In-Depth Information
total 589.17. In Turkmenistan, they are 159.94; in Iran 324.69; for the
entire Basin 1,073.80 MMT of oil equivalent. The offshore quantities are:
Azerbaijan 95.7%; Turkmenistan 32.6%; Iran 88.1%; and for the entire
region 82.8% (see Table 9.4).
Most of the prospective gas and condensate resources in Azerbaijan
are anticipated on individual offshore structures of the Abikh Swell
(block Alov-Sharg-Araz). The amount is about 330 BCM and 50 MMT.
Contingent oil resources are 25.5 MMT onshore Lower Kura Depression
and 185 MMT at undrilled prospects of the North-Apsheron zone of highs
in the Apsheron Archipelago (prospects Arzu, Aypara, Khamdem, Sevinj
and possibly others). (The remote offshore structures in the latter area
are small. Their estimated hydrocarbon quantities are relatively small. For
these reasons under the currently existing world prices for hydrocarbons,
they do not appear attractive for commercial development. However, this
does not preclude their commercial use as the world energy situation
changes.)
The discoveries of new hydrocarbon accumulations in Turkmenistan
with contingent resources of about 110 MMT of oil equivalent are antici-
pated on the undrilled structures of the Gograndag-Chikishlyar zone
of highs (onshore) and with prospective resources of about 50 BCM on
offshore structures in the Sary-Chikishlyar fold belt. In Iran, offshore
Lenkoran-Gorgan trough 185 MMT of oil equivalent
are estimated. These
resources, in terms of their reliability, belong between the contingent and
prospective resources.
Overall, the original geologic potential of the South Caspian Basin may
be estimated at 17.09 BT of oil equivalent (Table 11.4). The Azerbaijan
fraction is 11.22 BT (65.7%) including offshore 8.00. The Turkmenistan
fraction is 3.21 (18.8%) including 0.77 offshore. The Iranian share is 2.65
(15.5%) including offshore 2.33 BT of oil equivalent. The liquid phase of
the total potential (oil + condensate) is 10.93 BT, the gas is 6.15 TCM. By
country, these amounts are distributed as follows: Azerbaijan, 7.32 and
3.90 (offshore 4.40 and 3.60); Turkmenistan 2.02 and 1.19 (offshore 0.49
and 0.28); Iran 1.59 and 1.06 (offshore 1.55 and 0.78).
Our estimate of total recoverable hydrocarbon potential of the Productive
Sequence / Red-Bed Sequence in the region across the entire depth range
of its occurrence (0-8.5 km) as of January 1, 2006, is: Azerbaijan, 4.52
(59.9%);Turkmenistan, 1.23 (16.3%); and Iran, 1.80 (23.8%). For the
South Caspian Basin as a whole it is 7.54 BT of oil equivalent including
offshore Azerbaijan 4.32 (69.2%), offshore Turkmenistan 0.40 (6.4%) and
offshore Iran 1.52 (24.4%). The entire Basin has 6.24 BT of oil equivalent
(82.8%). The distribution among the countries within their marine sectors
