Exhibit 99.1
 THIRD PARTY REPORT ON RESERVES
 By GLJ Petroleum Consultants Ltd.  (Independent Qualified Reserves Evaluator)
 This report is provided to satisfy the requirements contained in Item 1202(a)(8) of U.S. Securities
and Exchange Commission Regulation S-K.
 Regulation S-K Regulation S-X
 i.
    
    We have prepared an independent evaluation of the oil and gas reserves of Ivanhoe
Energy Inc. (the Company) for the management and the board of directors of the Company.
The primary purpose of our evaluation report was to provide estimates of reserves
information in support of the Companys year-end reserves reporting requirements under US
Securities Regulation S-K and for other internal business and financial needs of the
Company.ii.
    
    We have evaluated the reserves of the Company as at December 31, 2010. The completion
date of our report is January 13, 2011 for the properties in China and February 11, 2011
for the properties in Canada.iii.
    
    The following table sets forth the geographic area covered by our reports, proved,
proved plus probable and proved plus probable plus possible reserves estimated using
constant prices and costs, and the proportion of the total company that we have evaluated.
 Company Net Proved Reserves
    
    
    Company Net P+Pb Reserves
    
    
    Company Net 3P ReservesCrude
    
    
    
    
    
    
    Oil
    
    
    Crude
    
    
    
    
    
    
    Oil
    
    
    Crude
    
    
    
    
    
    
    OilLocation of Reserves
    
    Oil
    
    
    Bitumen
    
    
    Equivalent
    
    
    Oil
    
    
    Bitumen
    
    
    Equivalent
    
    
    Oil
    
    
    Bitumen
    
    
    EquivalentCountry
    
    Mbbl
    
    
    Mbbl
    
    
    Mbbl
    
    
    Mbbl
    
    
    Mbbl
    
    
    Mbbl
    
    
    Mbbl
    
    
    Mbbl
    
    
    MbblCanada
    
    
    0
    
    
    
    0
    
    
    
    0
    
    
    
    0
    
    
    
    143,610
    
    
    
    143,610
    
    
    
    0
    
    
    
    177,305
    
    
    
    177,305China
    
    
    1,738
    
    
    
    0
    
    
    
    1,738
    
    
    
    2,530
    
    
    
    0
    
    
    
    2,530
    
    
    
    2,530
    
    
    
    0
    
    
    
    2,530Total Company
    
    
    1,738
    
    
    
    0
    
    
    
    1,738
    
    
    
    2,530
    
    
    
    143,610
    
    
    
    146,140
    
    
    
    2,530
    
    
    
    177,305
    
    
    
    179,835
 Our report covers 100% of the Companys proved plus probable oil and natural gas reserves.iv.
    
    As noted in item iii., our evaluation covered all of the Companys proved plus probable
reserves. We carried out our evaluation in accordance with standards set out in the
Canadian Oil and Gas Evaluation Handbook (the COGE Handbook) with the necessary
modifications to reflect definitions and standards under the U.S. Financial Accounting
Standards Board policies (the FASB Standards) and the legal requirements under the U.S.
Securities and Exchange Commission (SEC requirements).Data used in our evaluation were obtained from regulatory agencies, public sources and from
Company personnel and Company files. In the preparation of our report we have accepted as
presented, and have relied, without independent verification, upon a variety of information
furnished by the Company such as interests and burdens, recent production, product
transportation and marketing and sales agreements, historical revenue, capital costs,
operating expense data, budget forecasts and capital cost estimates and well data for
recently drilled wells. If in the course of our evaluation, the validity or sufficiency of
any material information was brought into question, we did not rely on such information until
such concerns were satisfactorily resolved.The Company has warranted in a representation letter to us that, to the best of the Companys
knowledge and belief, all data furnished to us was accurate in all material respects, and no
material data relevant to our evaluation was omitted.A field examination of the evaluated properties was not performed nor was it considered
necessary for the purposes of our report.In our opinion, estimates provided in our report have, in all material respects, been
determined in accordance with the applicable industry standards, and results provided in our
report and summarized herein are appropriate for inclusion in filings under Regulation S-K.




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v.
    
    As required under SEC Regulation S-K, reserves are those quantities of oil and gas that
are estimated to be economically producible under existing economic conditions. As
specified, in determining economic production, constant product reference prices have been
based on a 12-month average price, calculated as the unweighted arithmetic average of the
first-day-of-the-month price for each month within the 12-month period prior to the
effective date of our report. As the project in Canada has not commenced production, the
above described prices are based on posted benchmark prices and estimates of quality and
transportation differences to the field. In our economic analysis, operating and capital
costs are those costs estimated as applicable at the effective date of our report, with no
future escalation. Where deemed appropriate, the capital costs and revised operating costs
associated with the implementation of committed projects designed to modify specific field
operations in the future may be included in economic projections.vi.
    
    Our report has been prepared assuming the continuation existing regulatory and fiscal
conditions subject to the guidance in the COGE Handbook and SEC regulations.
Notwithstanding that the Company currently has regulatory approval to produce the reserves
identified in our report, there is no assurance that changes in regulation will not occur;
such changes, which cannot reliably be predicted, could impact the Companys ability to
recovery the estimated reserves.vii.
    
    Oil and gas reserves estimates have an inherent degree of associated uncertainty the
degree of which is affected by many factors. Reserves estimates will vary due to the
limited and imprecise nature of data upon which the estimates of reserves are predicated.
Moreover, the methods and data used in estimating reserves are often necessarily indirect
or analogical in character rather than direct or deductive. Furthermore, the persons
involved in the preparation of reserves estimates and associated information are required,
in applying geosciences, petroleum engineering and evaluation principles, to make numerous
unbiased judgments based upon their educational background, professional training, and
professional experience. The extent and significance of the judgments to be made are, in
themselves, sufficient to render reserves estimates inherently imprecise. Reserves
estimates may change substantially as additional data becomes available and as economic
conditions impacting oil and gas prices and costs change. Reserves estimates will also
change over time due to other factors such as knowledge and technology, fiscal and economic
conditions, contractual, statutory and regulatory provisions.viii.
    
    In our opinion, the reserves information evaluated by us have, in all material
respects, been determined in accordance with all appropriate industry standards, methods
and procedures applicable for the filing of reserves information under U.S. SEC Regulation
S-K.ix.
    
    A summary of the Company reserves evaluated by us is provided in item iii.
 GLJ Petroleum Consultants Ltd.  rd