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Exhibit 99.1

|Summa   
      Engineering    Inc.                                                                                                        
|------------------------------------------------------------------------------------------------------------------------------------------
|101 Park Avenue, Suite 490, Oklahoma City, OK
      73102-7211           
      405 232 8338 office          
      214 242 2326 facsimile

Wednesday, February 11, 2010Steve EnszAmerican
Natural Energy Corp.6100 S. Yale Avenue, Suite 300Tulsa, OK
74136-1905Reserve ReportBayou Couba FieldSections 12, 13 and
14-T15S-21ESt. Charles Parish, LouisianaSteve,

In accordance with your request we have estimated the reserves
and future revenue, as of December 31, 2009, to the American Natural Energy
Corporation (ANEC) interest in certain oil and gas properties located in Bayou
Couba Field, St. Charles Parish, Louisiana, as listed in the accompanying
tabulations. This report has been prepared for filing with the U.S. Securities
and Exchange-Commission.

|             | Net Reserves |     | Future Net Revenue, $US
|------------ | ------------ | --- | -----------------------
|             | Oil          | Gas |                        
|Category     | barrels      | mcf |                        
|             |              |     |                        
|Proved       |              |     |                        
|Developed    | 103,068      |     |                        
|Undeveloped  | 1,272,455    |     |                        
|Total Proved | 1,375,523    |     |                        

The future reserves, revenues and values are estimated only.
While the estimates presented are believed to be reasonable, they should be
accepted with the understanding that they are an interpretation of the available
date.

Sincerely,/s/ R.L. HilbunR.L. Hilbun,
P.E.

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Specific Parameters:

Purpose Prepared for the U.S. Securities and Exchange
Commission according to Reg. § 210.4 -10.

Effective Date  December 31, 2009

Oil Pricing- The price is the average of the first reported
price for each month of the reporting period. The U.S. Energy Information
Administration is the source for this pricing data. The average price of $61.08
per barrel less $2.25 transportation cost or $58.83 per barrel was used. The
price was not escalated.

Gas Pricing  The price is the average of the first reported
price for each month of the reporting period. The U.S. Energy Information
Administration is the source for this pricing data. The average price of $3.83
less $0.2758 transportation cost or $3.55 per mcf. The price was not
escalated.

Taxes -The appropriate state tax for oil and gas production are
included. No other taxes are considered.

Operating Expenses  Producing wells are presently absorbing
base operations of the field with an expense of $21.05 per barrel of oil. P2,
P3, and P4 were assigned an expense of $11.29 per barrel of oil. An expense of
$1.27 per mcf was used. These expenses were then held constant.

Present Value Calculations  The net present value at 10
percent has been calculated. Composite discounted totals may not be identical to
a summary of individual well economics.

Changes in this Report  The expense burdens and ownership have
changed in this report and the ownership for wells may change with future
activity. Start dates for future activity may have changed.

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General Parameters, unless otherwise specified:

Judgments- The evaluation is based on engineering and
geological data and interpretations and no particular consideration is given for
any regulatory, legal or accounting situation. There are uncertainties inherent
in the interpretation of engineering and geological data and our conclusions
represent only informed professional judgments.

Estimations- The estimates included in this report should not
be construed as exact quantities. The reserves and resources may or may not be
recovered; if recovered, the resulting revenues and costs could be more or less
than the estimated amounts. The sales rates, prices received for the reserves,
and costs incurred in recovering such reserves may vary from assumptions
included in this report due to the uncertainties of supply and demand,
governmental regulation or other factors. Estimates of reserves may increase or
decrease as a result of future operations.

Ownership- Summa Engineering Inc. was furnished the ownership
information and has not examined the titles to the properties and has not
confirmed the type or amount of interest owned. Summa Engineering Inc. is an
independent petroleum engineering company and does not own an interest in these
properties and is not employed on a contingent basis.

Gas Balancing- The estimates of reserves and future revenue do
not include adjustments for the settlement of any gas volume and value
imbalances resulting from over delivery or under delivery to the reported
interest. The projections are based on the reported interest receiving its net
revenue interest share of estimated future gross gas production.

Risk Factors  The decline curves and the accompanying single
property forecast page have no risk factor applied. If a risk factor table of
the probable and possible properties is included, then the risk factor is based
on the information available or the lack thereof. If a risk factor table(s) of
the proved developed producing and/or proved undeveloped properties are
included, then the risk factors applied are estimated based on the
following:

- Risk factors vary inversely with risk from 0.90 for little risk to 0.10
  for highest risk.
- Length of the production history with risk increasing with shorter or no
  history.
- Less risk for consistency of production and conformity with accepted
  decline type curves.
- Greater risk for erratic production without explanation.
- Less risk for offset or area analog wells, but greater risk if these wells
  represent drainage for the subject well.
- Greater risk for properties with larger reserves or values.

Field Inspections- For the purposes of this report, a field
inspection of the properties has not been performed nor has the mechanical
operation or condition of the wells and their related facilities been examined.
We have not investigated any possible environmental liability related to the
properties and our estimates do not include any costs that may be incurred due
to such possible liability.

Electronically Transmitted Reports- Any digital document is
intended to be substantively the same as the original signed document maintained
by Summa Engineering Inc. The digital document is subject to the parameters,
limitations, and conditions stated in the original document. In the event of any
differences between the digital document and the original document, the original
document shall supersede the digital document.

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Definitions Of Reserves And Resources

Proved Reserves

Proved reserves are the estimated remaining quantities of crude oil, natural gas, and natural gas liquids which geological and engineering data demonstrate with reasonable certainty to be recoverable in future years from known reservoirs under
existing economic and operating conditions. Proved reserves are limited to those quantities of oil and gas which can be expected, with little doubt, to be economically producible at current prices and costs, under existing regulatory practices and
with existing conventional equipment and operating methods.

Proved developed producing reserves are those reserves which are expected to be produced from existing completion intervals now open for production in existing wells.

Proved developed non-producing reserves are (1) those reserves expected to be produced from existing completion intervals in existing wells, but due to pending pipeline connections or other mechanical or contractual requirements hydrocarbon sales
have not yet commenced, and (2) other non-producing reserves which exist behind the casing of existing wells, or at minor depths below the present bottom of such wells, which are expected to be produced through these wells in the predictable future,
where the cost of making such oil and gas available for production should be relatively small compared to the cost of a new well.

Proved undeveloped reserves are those reserves which are expected to be recovered from new wells on undrilled acreage or from existing wells where a relatively major expenditure is required for recompletion. Proved reserves on undrilled acreage are
limited to those drilling units offsetting productive units that are reasonably certain of production when drilled.

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