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Prospective resources are those quantities of petroleum estimated, as of a given date, to be potentially recoverable from undiscovered accumulations by application of future development projects. Prospective resources have both an associated chance of discovery and a chance of development. There is no certainty that any portion of the resources will be discovered. If discovered, there is no certainty that it will be commercially viable to produce any portion of the resources. Unrisked prospective resources are not risked for change of development or chance of discovery. If a discovery is made, there is no certainty that it will be developed or, if it is developed, there is no certainty as to the timing of such development. In this news release risked prospective resources have been risked for chance of discovery but have not been risked for chance of development. If a discovery is made, there is no certainty that it will be developed or, if it is developed, there is no certainty as to the timing of such development.

PIIP is defined as petroleum initially in place and is that quantity of petroleum that is estimated to exist originally in naturally occurring accumulations. It is the total quantity of petroleum that is estimated, as of a given date, to be contained in known accumulations, prior to production. PIIP estimates may contain all resource classifications, both discovered and undiscovered. There is no certainty that any portion of the resources will be discovered. If discovered, there is no certainty that it will be commercially viable to produce any portion of the resources.

Non-Core Assets

In this news release, all references to "core" and "non-core" assets and properties align with the company's current public disclosure regarding its assets and properties.

BOE Conversion

Throughout this news release, barrels of oil equivalent (boe) are calculated at a conversion rate of six thousand cubic feet (mcf) of natural gas for one barrel of oil (bbl). This news release also includes references to mcf equivalents (mcfes) which are calculated at a conversion rate of one barrel of oil to six thousand cubic feet of gas. Boes and Mcfes may be misleading, particularly if used in isolation. A boe conversion ratio of 6mcf:1bbl and an mcfe conversion ratio of 1bbl:6mcf are based on an energy equivalence conversion method primarily applicable at the burner tip and do not represent a value equivalency at the well head.

Netbacks

Talisman also discloses netbacks in this news release. Netbacks per boe are calculated by deducting from the sales price associated royalties, operating and transportation costs.

IFRS

The financial information for 2012 and 2013 is presented in accordance with International Financial Reporting Standards (IFRS). IFRS may differ from generally accepted accounting principles in the US.

Non-GAAP Financial Measures

Included in this news release are references to financial measures used in the oil and gas industry such as free cash flow, cash flow and capital expenditure. These terms are not defined by IFRS. Consequently, these are referred to as non-GAAP measures. Talisman's reported results of such measures may not be comparable to similarly titled measures reported by other companies.

Free Cash Flow is used by management to assess the amount of funds available for reinvestment or to reduce debt levels or return to shareholders. Free cash flow is the net of cash provided by operating, investing and financing activities before the repayment or issuance of long-term debt.