EXHIBIT(a)(1)(H)

This announcement is neither an offer to purchase nor a solicitation of an offer
to sell Shares (as defined below). The Offer (as defined below) is made solely
by the Offer to Purchase dated March 26, 2002 and the related Letter of
Transmittal and is not being made to (nor will tenders be accepted from or on
behalf of) holders of Shares in any jurisdiction in which the making of the
Offer or the acceptance thereof would not be in compliance with the laws of such
jurisdiction. In any jurisdiction where securities, blue sky or other laws
require the Offer to be made by a licensed broker or dealer, the Offer shall be
deemed to be made on behalf of the Purchaser by Merrill Lynch, Pierce, Fenner &
Smith Incorporated or one or more registered brokers or dealers licensed under
the laws of such jurisdictions.

Notice of Offer to Purchase for Cash
All Outstanding Shares of Common Stock
of Esenjay Exploration, Inc.
at $2.84 Net Per Share
by ECM Acquisition Company
a wholly owned subsidiary of
Santos Americas and Europe Corporation

ECM Acquisition Company, a Delaware corporation (the "Purchaser") and a wholly
owned subsidiary of Santos Americas and Europe Corporation, a Delaware
corporation ("SAEC"), is offering to purchase all outstanding shares of common
stock, par value $.01 per share (the "Shares"), of Esenjay Exploration, Inc., a
Delaware corporation ("Esenjay"), at a purchase price of $2.84 per Share, net to
the seller in cash, without interest thereon, on the terms and subject to the
conditions set forth in the Offer to Purchase dated March 26, 2002 and in the
related Letter of Transmittal (which, together with any amendments or
supplements thereto, collectively constitute the "Offer"). The purpose of the
Offer is to acquire for cash as many outstanding Shares as possible as a first
step in acquiring the entire equity interest in Esenjay. After the consummation
of the Offer, the Purchaser intends to effect the Merger (as defined below). The
offer and withdrawal rights will expire at 12:00 midnight, New York City time,
on Monday, April 22, 2002, unless THE OFFER IS extended.

The Offer is conditioned on, among other things, there being validly tendered
and not properly withdrawn prior to the expiration of the Offer a number of
Shares that would constitute at least a majority of all outstanding Shares on a
fully diluted basis on the date of purchase. Certain other conditions to the
Offer are described in Section 14 of the Offer to Purchase. The Offer is being
made under the terms of an Agreement dated as of March 17, 2002 (the
"Acquisition Agreement") among the Purchaser, SAEC and Esenjay. The Acquisition
Agreement provides that, following the consummation of the Offer and on the
terms and subject to the conditions of the Acquisition Agreement and in
accordance with the General Corporation Law of the State of Delaware, the
Purchaser will be merged with and into Esenjay (the "Merger"). Following the
effective time of the Merger (the "Effective Time"), Esenjay will continue as
the surviving corporation and a wholly owned subsidiary of SAEC. In the Merger,
each outstanding Share (other than Shares owned by Esenjay, the Purchaser or
SAEC or by stockholders, if any, who are entitled to and properly exercise
appraisal rights under Delaware law) will be converted into the right to receive
the price per Share paid under the Offer in cash, without interest thereon. The
Acquisition Agreement is more fully described in Section 12 of the Offer to
Purchase. Under Delaware law, if the Purchaser acquires at least 90% of the
issued and outstanding Shares, under the Offer or otherwise, the Purchaser will
be able to effect the Merger without prior notice to, or any action by,



Esenjay's other stockholders. If, however, the Purchaser does not acquire at
least 90% of the outstanding Shares, under the Offer or otherwise, and adoption
of the Acquisition Agreement by Esenjay's stockholders is required under
Delaware law to effect the Merger, a longer period of time will be required to
effect the Merger as described in Section 12 of the Offer to Purchase.

In connection with the Acquisition Agreement, SAEC entered a Stockholders
Agreement, dated as of March 17, 2002 (the "Stockholder Agreement"), with the
directors and certain officers and major stockholders of Esenjay who together
own approximately 52% of the Shares that are outstanding. In the Stockholders
Agreement, these stockholders have agreed, among other things, to tender all of
their Shares under the Offer and to vote their shares in favor of the Merger in
the event the Merger requires stockholder approval.

In addition, stockholders of Esenjay owning approximately 52% of the total
number of shares outstanding as of March 17, 2002 have entered into an option
agreement under which SAEC has an irrevocable option to purchase those shares if
one party terminates the Acquisition Agreement under certain circumstances that
the Offer to Purchase describes.

The Board of Directors of Esenjay has approved the acquisition agreement and the
transactions it contemplates, including the Offer and the Merger, and determined
that the terms of the Offer, the Merger and the other transactions contemplated
by the acquisition agreement are advisable and fair to and in the best interest
of Esenjay and its Stockholders and recommends that the stockholders of Esenjay
accept the Offer and tender their Shares under the Offer.

Tendering stockholders whose Shares are registered in their own names and who
tender directly to The Bank of New York, as Depositary (the "Depositary"), will
not be obligated to pay brokerage fees or commissions or, except as set forth in
Instruction 6 of the Letter of Transmittal, stock transfer taxes on the purchase
of Shares by the Purchaser under the Offer. Stockholders who hold their Shares
through banks or brokers should check with those institutions as to whether they
charge any service fees.

For purposes of the Offer, the Purchaser will be deemed to have accepted for
payment and thereby purchased Shares validly tendered and not properly withdrawn
as, if and when the Purchaser gives oral or written notice to the Depositary of
the Purchaser's acceptance for payment of such Shares. On the terms and subject
to the conditions of the Offer, payment for Shares accepted for payment under
the Offer will be made by deposit of the purchase price therefor with the
Depositary, which will act as agent for tendering stockholders for the purpose
of receiving payment from the Purchaser and transmitting payment to tendering
stockholders whose Shares have been accepted for payment. In all cases, payment
for Shares accepted for payment under the Offer will be made only after timely
receipt by the Depositary of (1) certificates for those Shares or timely
confirmation of book-entry transfer of those Shares into the Depositary's
account at the Book-Entry Transfer Facility (as defined in the Offer to
Purchase) under the procedures set forth in Section 2 of the Offer to Purchase,
(2) a Letter of Transmittal (or a facsimile thereof), properly completed and
duly executed, with any required signature guarantees or, in the case of a
book-entry transfer, an Agent's Message (as defined in the Offer to Purchase)
and (3) any other documents required by the Letter of Transmittal. Under no
circumstances will interest be paid on the purchase price of the Shares to be
paid by the Purchaser, regardless of any extension of or amendment to the Offer
or any delay in paying for such Shares.

The term "Expiration Date" means 12:00 midnight, New York City time, on Monday,
April 22, 2002, unless and until the Purchaser shall have extended the period of
time during which the Offer is open in accordance with the provisions of the
Acquisition Agreement, in which event the term "Expiration Date" shall mean the
latest time and date as of which the Offer, as so extended by the Purchaser,
will expire. Subject to the terms of the Acquisition Agreement (which prohibits



certain amendments to the Offer) and the applicable rules and regulations of the
Securities and Exchange Commission, the Purchaser reserves the right (but shall
not be obligated, except as described in Section 1 of the Offer to Purchase), at
any time and from time to time, and regardless of whether or not any of the
events or facts set forth in Section 14 of the Offer to Purchase shall have
occurred, (1) to extend the period of time during which the Offer is open, and
thereby delay acceptance for payment of and the payment for any Shares, by
giving oral or written notice of such extension to the Depositary, (2) to elect
to provide a subsequent offering period for the Offer in accordance with Rule
14d-11 under the Securities Exchange Act of 1934, as amended (the -Exchange
Act"), and (3) to amend the Offer in any other respect by giving oral or written
notice of such amendment to the Depositary. Under no circumstances will interest
be paid on the purchase price for tendered Shares, whether or not the Purchaser
exercises its right to extend the Offer. Any such extension will be followed by
a public announcement thereof no later than 9:00 a.m., New York City time, on
the next business day after the previously scheduled Expiration Date. During any
such extension, all Shares previously tendered and not withdrawn will remain
subject to the Offer, subject to the right of a tendering stockholder to
withdraw such stockholder's Shares under the withdrawal procedures described
below.

Except as otherwise described below, tenders of Shares are irrevocable.
Shares tendered under the Offer may be withdrawn under the procedures described
below at any time prior to the Expiration Date and, unless theretofore accepted
for payment and paid for by the Purchaser under the Offer, may also be withdrawn
at any time after May 24, 2002, except as provided with respect to any
subsequent offering. For a withdrawal to be effective, a written or facsimile
transmission notice of withdrawal must be timely received by the Depositary at
one of its addresses set forth on the back cover of the Offer to Purchase. Any
such notice must specify the name of the person having tendered the Shares to be
withdrawn, the number of Shares to be withdrawn and the name of the registered
holder of the Shares to be withdrawn, if different from the name of the person
who tendered the Shares. If certificates for Shares have been delivered or
otherwise identified to the Depositary, then, prior to the physical release of
such certificates, the serial numbers shown on such certificates must be
submitted to the Depositary and, unless such Shares have been tendered by an
Eligible Institution (as defined in Section 2 of the Offer to Purchase), the
signatures on the notice of withdrawal must be guaranteed by an Eligible
Institution. If Shares have been delivered under the procedures for book-entry
transfer Section 2 of the Offer to Purchase sets forth, any notice of withdrawal
must also specify the name and number of the account at the Book-Entry Transfer
Facility to be credited with the withdrawn Shares and otherwise comply with the
Book-Entry Transfer Facility's procedures. Withdrawals of tenders of Shares may
not be rescinded, and any Shares properly withdrawn will thereafter be deemed
not validly tendered for purposes of the Offer. However, withdrawn Shares may be
retendered by again following one of the procedures described in Section 2 of
the Offer to Purchase at any time prior to the Expiration Date. All questions as
to the form and validity (including time of receipt) of any notice of withdrawal
will be determined by the Purchaser in its sole discretion, which determination
will be final and binding. None of the Purchaser, SAEC, Esenjay, the Dealer
Manager, the Depositary, the Information Agent or any other person will be under
any duty to give notification of any defects or irregularities in any notice of
withdrawal or incur any liability for failure to give any such notification.
Under Rule 14d-11 under the Exchange Act, the Purchaser may, subject to certain
conditions, provide a subsequent offering period from three to 20 business days
in length following the Expiration Date. A subsequent offering period would be
an additional period of time, following the expiration of the Offer and the
purchase of Shares in the Offer, during which stockholders may tender Shares not



tendered in the Offer. A subsequent offering period, if one is provided, is not
an extension of the Offer, which already will have been completed. Under the
Exchange Act, no withdrawal rights apply to Shares tendered during a subsequent
offering period and no withdrawal rights apply during the subsequent offering
period with respect to Shares tendered in the Offer and accepted for payment.
See Section 1 of the Offer to Purchase.

Esenjay has provided the Purchaser with Esenjay's stockholder lists and security
position listing for the purpose of disseminating the Offer to holders of
Shares. The Offer to Purchase, the related Letter of Transmittal and other
relevant materials will be mailed to record holders of Shares and furnished to
brokers, dealers, commercial banks, trust companies and similar persons whose
names, or the names of whose nominees, appear on Esenjay's stockholder lists or,
if applicable, who are listed as participants in a clearing agency's security
position listing for subsequent transmittal to beneficial owners of Shares. The
Purchaser expressly reserves the right to waive any condition to the Offer or
modify the terms of the Offer, subject to (1) the Acquisition Agreement, which
contains certain conditions that may not be waived and modifications that may
not be made without the consent of Esenjay, and (2) the rules and regulations of
the Securities and Exchange Commission. The information required to be disclosed
by Rule 14d-6(d)(1) under the Exchange Act is contained in the Offer to Purchase
and is incorporated herein by reference.

The Offer to Purchase and the related Letter of Transmittal contain important
information that should be read carefully and in its entirety before any
decision is made with respect to the Offer. Requests for copies of the Offer to
Purchase, the Letter of Transmittal, and other tender offer materials may be
directed to the Information Agent or the Dealer Manager as set forth below, and
copies will be furnished promptly at the Purchaser's expense. Neither the
Purchaser nor SAEC will pay any fees or commissions to any broker, dealer or
other person (other than the Information Agent, the Depositary and the Dealer
Manager, as described in the Offer to Purchase) for soliciting tenders of Shares
under the Offer.

The Information Agent for the Offer is:
[Mackenzie Logo]
156 Fifth Avenue
New York, New York 10010
(212) 929-5500 (Call Collect)
E-mail: proxy@mackenziepartners.com
or
Call Toll-Free (800) 322-2885
The Dealer Manager for the Offer is:
Merrill Lynch & Co.
Four World Financial Center
New York, New York 10080
(866) 276-1462 (Call Collect)
March 26, 2002