Exhibit 99.3

Disclaimer

The tender offer (the “Offer”) described in this communication has not yet commenced, and this communication is neither an offer to purchase nor a solicitation of an offer to sell any shares of the common stock of Athlon Energy Inc. (“Athlon”) or any other securities. On the commencement date of the Offer, a tender offer statement on Schedule TO, including an offer to purchase, a letter of transmittal and related documents, will be filed with the United States Securities and Exchange Commission (the “SEC”) by Encana Corporation (“Encana” or the “Company”) and a Solicitation/Recommendation Statement on Schedule 14D-9 will be filed with the SEC by Athlon. The offer to purchase shares of Athlon will only be made pursuant to the offer to purchase, the letter of transmittal and related documents filed with such Schedule TO. INVESTORS AND SECURITY HOLDERS ARE URGED TO READ BOTH THE TENDER OFFER STATEMENT AND THE SOLICITATION/RECOMMENDATION STATEMENT REGARDING THE OFFER, AS THEY MAY BE AMENDED FROM TIME TO TIME, WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION. Investors and security holders may obtain a free copy of these statements (when available) and other documents filed with the SEC at the website maintained by the SEC at www.sec.gov or by directing such requests to the Information Agent for the Offer, which will be named in the tender offer statement.

Advisory Regarding Forward-Looking Statements

In the interests of providing Encana shareholders and potential investors with information regarding Encana, including management’s assessment of Encana’s and its subsidiaries’ future plans and operations, certain statements contained in this communication are forward-looking statements or information within the meaning of applicable securities legislation, collectively referred to herein as “forward-looking statements.” Forward-looking statements in this communication include, but are not limited to: the successful execution and acceleration of the company’s strategy; the company’s vision of becoming the leading North American oil and gas resource play company; the company’s belief that Athlon is the best Permian pure play company; the company’s plan to unlock value from its resource base and its continued focused investment on a limited number of oil and liquids-rich plays; the quality of the company’s resource plays; the accelerated rebalancing of the company’s portfolio by two years; the benefits of the transaction to Encana; the resource potential and high-margin liquids production of the Athlon lands (the “Lands”); the expectation that the transaction will add current production and will add 10 years of drilling inventory in the Permian Basin; the expected closing date of the Athlon transaction and the expectation that closing conditions will be satisfied and regulatory approvals will be obtained; and the company’s expectation to achieve its 2017 target of operating cash flow from production in 2015.

Readers are cautioned not to place undue reliance on forward-looking statements, as there can be no assurance that the plans, intentions or expectations upon which they are based will occur. By their nature, forward-looking statements involve numerous assumptions, known and unknown risks and uncertainties, both general and specific, that contribute to the possibility that the predictions, forecasts, projections and other forward-looking statements will not occur, which may cause the company’s actual performance and financial results in future periods to differ materially from any estimates or projections of future performance or results expressed or implied by such forward-looking statements. These assumptions, risks and uncertainties include, among other things: volatility of, and assumptions regarding natural gas and liquids prices, including substantial or extended decline of the same and their adverse effect on the company’s operations and financial condition and the value and amount of its reserves; assumptions based upon the company’s current guidance; fluctuations in currency and interest rates; risk that the company may not conclude divestitures of certain assets or other transactions or receive amounts contemplated under the transaction agreements (such transactions may include third-party capital investments, farm-outs or partnerships, which Encana may refer to from time to time as “partnerships” or “joint ventures” and the funds received in respect thereof which Encana may refer to from time to time as “proceeds”, “deferred purchase price” and/or “carry capital”, regardless of the legal form) as a result of various conditions not being met; product supply and demand; market competition; risks inherent in the company’s and its subsidiaries’ marketing operations, including credit risks; imprecision of reserves estimates and estimates of recoverable quantities of natural gas and liquids from resource plays and other sources not currently classified as proved, probable or possible reserves or economic contingent resources, including future net revenue estimates; marketing margins; potential disruption or unexpected technical difficulties in developing new facilities; unexpected cost increases or technical difficulties in constructing or modifying processing facilities; risks associated with technology; the company’s ability to acquire or find additional reserves; hedging activities resulting in realized and unrealized losses; business interruption and casualty losses; risk of the company not operating all of its properties and assets; counterparty risk; risk of downgrade in credit rating and its adverse effects; liability for indemnification obligations to third parties; variability of dividends to be paid; its ability to generate sufficient cash flow from operations to meet its current and future obligations; its ability to access external sources of debt and equity capital; the timing and the costs of well and pipeline construction; the company’s ability to secure adequate product transportation; changes in royalty, tax, environmental, greenhouse gas, carbon, accounting and other laws or regulations or the interpretations of such laws or regulations; political and economic conditions in the countries in which the company operates; terrorist threats; risks associated with existing and potential future lawsuits and regulatory actions made against the company; risk arising from price basis differential; risk arising from inability to enter into attractive hedges to protect the company’s capital program; and other risks and uncertainties described from time to time in the reports and filings made with securities regulatory authorities by Encana. There can be no assurance that the transaction will be completed. Completion of the transaction is subject to a number of risks and uncertainties, including that at least a majority of the Athlon shares on a fully diluted basis have tendered to the Offer, that the waiting period under the U.S. Hart-Scott-Rodino Act has expired or been terminated, and other customary conditions. Although Encana believes that the expectations represented by such forward-looking statements are reasonable, there can be no assurance that such expectations will prove to be correct. Readers are cautioned that the foregoing list of important factors is not exhaustive. In addition, assumptions relating to such forward-looking statements generally include Encana’s current expectations and projections made in light of, and generally consistent with, its historical experience and its perception of historical trends, including the conversion of resources into reserves and production as well as expectations regarding rates of advancement and innovation, generally consistent with and informed by its past experience, all of which are subject to the risk factors identified elsewhere in this communication.

Furthermore, the forward looking statements contained in this communication are made as of the date hereof and, except as required by law, Encana undertakes no obligation to update publicly or revise any forward looking statements, whether as a result of new information, future events or otherwise. The forward looking statements contained in this communication are expressly qualified by this cautionary statement.

Advisory Regarding Oil and Gas Information

Reserves are the estimated remaining quantities of oil and natural gas and related substances anticipated to be recoverable from known accumulations, from a given date forward, based on: analysis of drilling, geological, geophysical and engineering data, the use of established technology, and specified economic conditions, which are generally accepted as being reasonable. Proved reserves are those reserves which can be estimated with a high degree of certainty to be recoverable. It is likely that the actual remaining quantities recovered will exceed the estimated proved reserves.

The estimates of various classes of reserves (proved, probable, possible) and of contingent resources (low, best, high) in this communication represent arithmetic sums of multiple estimates of such classes for different properties, which statistical principles indicate may be misleading as to volumes that may actually be recovered. Readers should give attention to the estimates of individual classes of reserves and contingent resources and appreciate the differing probabilities of recovery associated with each class.

Encana uses the terms resource play. Resource play is a term used by Encana to describe an accumulation of hydrocarbons known to exist over a large areal expanse and/or thick vertical section, which when compared to a conventional play, typically has a lower geological and/or commercial development risk and lower average decline rate.

In this communication, certain oil and NGLs volumes have been converted to cubic feet equivalent (cfe) on the basis of one barrel (bbl) to six thousand cubic feet (Mcf). Cfe may be misleading, particularly if used in isolation. A conversion ratio of one bbl to six Mcf is based on an energy equivalency conversion method primarily applicable at the burner tip and does not represent value equivalency at the well head. Given that the value ratio based on the current price of oil as compared to natural gas is significantly different from the energy equivalency of 6:1, utilizing a conversion on a 6:1 basis may be misleading as an indication of value.

For convenience, references in this communication to “Encana”, the “Company”, “we”, “us” and “our” may, where applicable, refer only to or include any relevant direct and indirect subsidiary corporations and partnerships (“Subsidiaries”) of Encana Corporation, and the assets, activities and initiatives of such Subsidiaries.

VIDEO – ANNOUNCEMENT OF ATHLON ACQUISITION

Doug Suttles: I’m very excited today to announce a key step in implementing our new strategy with the announced acquisition of Athlon Energy. We believe Athlon Energy is the best Permian pure play company based on the assets they’ve assembled and the great team they have. With this acquisition, combined with our other accomplishments in 2014, we’ve essentially delivered on our 2017 strategy targets in 2015.

Athlon Energy brings to Encana an incredible inventory of 3 billion barrels of resource potential and more than a 10 year drilling inventory in the core of the core of the Midland Basin. With this acquisition, we have now assembled an incredible set of assets. We find ourselves in the top two resource plays in Canada, with the Montney and the Duvernay, and the top two resource plays in the United States, with our positions in the Eagle Ford and the Permian.

I want to thank everyone for their hard work, their perseverance and their accomplishments in 2014 as we’ve now clearly positioned Encana as the leading resource play company in North America.

END