Shell Confirms Deepwater Oil Discovery Offshore French Guiana

LONDON, September 9, 2011 /PRNewswire/ –

As part of the Tullow-operated joint venture, Shell (NYSE: RDS.A) (NYSE:
RDS.B) today confirms an oil discovery in the Guyane Maritime permit
approximately 150-kilometers offshore French Guiana.

The GM-ES-1 well is being drilled in a water depth of over 2,000 meters
and to date has drilled to a depth of 5,711 meters. The well has encountered
over 70-meters of net oil pay in two objectives. The joint venture plans to
drill ahead to the planned target depth.

“We are pleased with the preliminary results of this first ever
deepwater well offshore French Guiana,” said Dave Lawrence, Shells executive
vice president Exploration and Commercial. “We are early in the evaluation,
but the initial results are encouraging for this new play. The joint venture
will continue to drill ahead, evaluate the well results, and determine next
steps.”

Shell acquired an initial equity interest of 33% in the joint venture in
2009 and increased its equity interest to 45% in 2010, subject to government
approval. The joint venture is currently operated by Tullow (27.5%) with
additional equity interest held by Total (25%) and Northpet (2.5%), a
company owned 50% by Northern Petroleum plc and 50% by Wessex Exploration
plc.

Cautionary note
The companies in which Royal Dutch Shell plc directly and indirectly owns
investments are separate entities. In this release “Shell”, “Shell group”
and “Royal Dutch Shell” are sometimes used for convenience where references
are made to Royal Dutch Shell plc and its subsidiaries in general. Likewise,
the words “we”, “us” and “our” are also used to refer to subsidiaries in
general or to those who work for them. These expressions are also used where
no useful purpose is served by identifying the particular company or
companies. ‘Subsidiaries’, “Shell subsidiaries” and “Shell companies” as
used in this release refer to companies in which Royal Dutch Shell either
directly or indirectly has control, by having either a majority of the
voting rights or the right to exercise a controlling influence. The
companies in which Shell has significant influence but not control are
referred to as “associated companies” or “associates” and companies in which
Shell has joint control are referred to as “jointly controlled entities”. In
this release, associates and jointly controlled entities are also referred
to as “equity-accounted investments”. The term “Shell interest” is used for
convenience to indicate the direct and/or indirect (for example, through our
24% shareholding in Woodside Petroleum Ltd.) ownership interest held by
Shell in a venture, partnership or company, after exclusion of all
third-party interest.

This release contains forward-looking statements concerning the
financial condition, results of operations and businesses of Royal Dutch
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be deemed to be, forward-looking statements. Forward-looking statements are
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‘risks’, ‘goals’, ‘should’ and similar terms and phrases. There are a number
of factors that could affect the future operations of Royal Dutch Shell and
could cause those results to differ materially from those expressed in the
forward-looking statements included in this release, including (without
limitation): (a) price fluctuations in crude oil and natural gas; (b)
changes in demand for the Shell’s products; (c) currency fluctuations; (d)
drilling and production results; (e) reserve estimates; (f) loss of market
share and industry competition; (g) environmental and physical risks; (h)
risks associated with the identification of suitable potential acquisition
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measures as a result of climate changes; (k) economic and financial market
conditions in various countries and regions; (l) political risks, including
the risks of expropriation and renegotiation of the terms of contracts with
governmental entities, delays or advancements in the approval of projects
and delays in the reimbursement for shared costs; and (m) changes in trading
conditions. All forward-looking statements contained in this release are
expressly qualified in their entirety by the cautionary statements contained
or referred to in this section. Readers should not place undue reliance on
forward-looking statements. Additional factors that may affect future
results are contained in Royal Dutch Shell’s 20-F for the year ended 31
December, 2010 (available at http://www.shell.com/investor and
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). These factors also should be considered by the reader.
Each forward-looking statement speaks only as of the date of this release, 9
September 2011. Neither Royal Dutch Shell nor any of its subsidiaries
undertake any obligation to publicly update or revise any forward-looking
statement as a result of new information, future events or other
information. In light of these risks, results could differ materially from
those stated, implied or inferred from the forward-looking statements
contained in this release. There can be no assurance that dividend payments
will match or exceed those set out in this release in the future, or that
they will be made at all.

The United States Securities and Exchange Commission (SEC) permits oil
and gas companies, in their filings with the SEC, to disclose only proved
reserves that a company has demonstrated by actual production or conclusive
formation tests to be economically and legally producible under existing
economic and operating conditions. We use certain terms in this release,
such as resources and oil in place, that SEC’s guidelines strictly prohibit
us from including in filings with the SEC. U.S. Investors are urged to
consider closely the disclosure in our Form 20-F, File No 1-32575, available
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. You can also obtain these forms from the SEC by calling
1-800-SEC-0330.

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SOURCE Royal Dutch Shell plc