In accordance with the Accounting Standards Update 2010-03, “Extractive Activities – Oil and Gas (Topic 932): Oil and Gas Reserve Estimation and
Disclosures” (“ASU 2010-03”), issued by the Financial Accounting Standards Board of the United States, this section provides supplemental information
on oil and gas exploration and producing activities of the Group at 31 December 2014 and 2013, and for the years then ended in the following six
separate tables. Tables I through III provide historical cost information under IFRS pertaining to capitalised costs related to oil and gas producing
activities; costs incurred in oil and gas exploration and development; and results of operation related to oil and gas producing activities. Tables IV
through VI present information on the Group’s estimated net proved reserve quantities; standardised measure of discounted future net cash flows; and
changes in the standardised measure of discounted cash flows.
Tables I to VI of supplemental information on oil and gas producing activities of the Group set out below represent information of the Company and its
consolidated subsidiaries and equity method investments. The oil and gas producing activities of the equity method investee of the Group are relatively
small and therefore the information are presented with total amount of both internal and external.