EXHIBIT (a)(5)(F)

FOR IMMEDIATE RELEASE

                           ENCANA EXPANDS U.S. ROCKIES
                      PRODUCTION WITH COMPLETION OF TENDER
                           OFFER FOR TOM BROWN SHARES

        ENCANA U.S. GAS PRODUCTION TO REACH 1 BILLION CUBIC FEET PER DAY


CALGARY, ALBERTA (MAY 19, 2004) - EnCana Corporation (TSX & NYSE: ECA) has
successfully completed its cash tender offer for all outstanding common shares
of Tom Brown, Inc. (NYSE: TBI). In excess of 95 percent of the outstanding Tom
Brown shares have been tendered to EnCana's offer of US$48.00 cash per share.
All validly tendered shares have been accepted for purchase and will be paid for
promptly. The total value of the transaction, including the assumption of debt,
is approximately US$2.7 billion.

"The acquisition of Tom Brown accelerates EnCana's pursuit of North American
resource plays - long-life assets where we expect to apply our core competencies
to deliver steady, reliable growth in production and reserves. The U.S. Rockies
have been EnCana's highest growth region since 2000, with about 75 percent of
the double-digit growth coming from the drill bit. The Tom Brown assets offer
similar potential for profitable organic growth for several years ahead," said
Randy Eresman, EnCana's Chief Operating Officer.

"We will move quickly to welcome the Tom Brown employees, integrate the acquired
properties into our U.S. and Canadian operations and build upon the excellent
accomplishments of Tom Brown and its people," Eresman said.

The acquisition of Tom Brown will add about 325 million cubic feet per day of
gas equivalent production. EnCana's U.S. gas production is expected to reach 1
billion cubic feet per day this year. To help assure strong returns on the
acquisition, EnCana has hedged volumes equivalent to all of the forecasted
production from Tom Brown's U.S. assets at a NYMEX equivalent price of
approximately US$5.60 per thousand cubic feet through 2006.

The completion of the Tom Brown acquisition is the first step in a two-step
process. The company has also begun the sale process on approximately 30,000
barrels of oil equivalent per day of mature, Western Canadian production, with
bids due at the end of June. It is expected that an additional 10,000 to 30,000
barrels of oil equivalent per day will also be divested over the balance of the
year. Total proceeds from these divestitures are estimated in the range of US$1
billion to US$1.5 billion. EnCana anticipates issuing an updated sales forecast
in June.

EnCana's tender offer for Tom Brown commenced on April 21, 2004 and expired as
scheduled at midnight Eastern Time on Tuesday, May 18, 2004. EnCana has been
advised by the Bank of New York, the Depository for the tender offer, that a
total of at least 44,583,673 shares of Tom Brown common stock, including shares
tendered pursuant to guaranteed delivery, were tendered and not withdrawn prior
to the expiration of the tender offer. All validly tendered shares have been
accepted for purchase at a price of $48.00 per share, net to the seller in cash,
in accordance with the terms of the tender offer and payment for these shares
will be made promptly. The number of Tom Brown shares that were not tendered and
that remain outstanding is 1,935,683. All necessary regulatory approvals have
also been received.



EnCana intends to complete the acquisition of Tom Brown through a merger in
which all shares of common stock not validly tendered into the tender offer will
be converted into the right to receive $48.00 per share, net to the seller in
cash. Payment of such amount will be made following the merger upon proper
presentation of certificates formerly representing shares to the Bank of New
York, Paying Agent for the merger, together with a properly completed letter of
transmittal. Transmittal materials will be sent to stockholders following the
merger. Under applicable law, the proposed merger is not subject to the approval
of the remaining outstanding stockholders of Tom Brown.

ENCANA CORPORATION

With an enterprise value of approximately US$25 billion, EnCana is one of the
world's leading independent oil and gas companies and North America's largest
independent natural gas producer and gas storage operator. Ninety percent of the
company's assets are located in North America. EnCana is the largest producer
and landholder in Western Canada and is a key player in Canada's emerging
offshore East Coast basins. Through its U.S. subsidiaries, EnCana is one of the
largest gas explorers and producers in the Rocky Mountain states and has a
strong position in the deep water Gulf of Mexico. International subsidiaries
operate two key high potential international growth regions: Ecuador, where it
is the largest private sector oil producer, and the U.K. where it is the
operator of a large oil discovery. EnCana and its subsidiaries also conduct high
upside potential new ventures exploration in other parts of the world. EnCana is
driven to be the industry's high performance benchmark in production cost,
per-share growth and value creation for shareholders. EnCana common shares trade
on the Toronto and New York stock exchanges under the symbol ECA.

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 news release are
forward-looking statements. Forward-looking statements in this news release
include, but are not limited to: the anticipated completion of the Tom Brown
acquisition and the timing thereof, future profitable organic growth, ability to
divest of Western Canadian assets and expected amounts of proceeds from planned
divestitures. 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. 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.

Furthermore, the forward-looking statements contained in this news release are
made as of the date of this news release, and EnCana does not undertake any
obligation to update publicly or to revise any of the included forward-looking
statements, whether as a result of new information, future events or otherwise.
The forward-looking statements contained in this news release are expressly
qualified by this cautionary statement.

Further information on EnCana Corporation is available on the company's Web
site, www.encana.com, or by contacting:

FOR FURTHER INFORMATION:
- ------------------------

INVESTOR CONTACT:                               MEDIA CONTACT:
     EnCana Corporate Development

     SHEILA MCINTOSH                                 ALAN BORAS
Vice-President, Investor Relations                   Manager, Media Relations
(403) 645-2194                                       (403) 645-4747

Greg Kist
Manager, Investor Relations
(403) 645-4737

Tracy Weeks
Manager, Investor Relations
(403) 645-2007