Endeavour Announces Third Quarter 2010 Financial and Operational Results

By Endeavour International Corporation, PRNE
Tuesday, November 2, 2010

HOUSTON, November 3, 2010 - — UK West Rochelle well confirms reservoir

— Sale of UK Cygnus Asset

— Continued success in US Haynesville

Endeavour International Corporation (NYSE Amex: END) (LSE: ENDV) today
reported discretionary cash flow for the third quarter of 2010 was US$6.1
million
compared to US$7.6 million in the third quarter of 2009 and US$11.2
million
for the second quarter of 2010. Net loss, as adjusted, was US$(14.6)
million
for the third quarter of 2010 compared to US$(6.4) million in the
same period last year. On a GAAP basis, the net loss was US$(11.7) million
for the third quarter of 2010 as compared to US$(4.5) million in the same
quarter in 2009.

"During the quarter, we achieved several important goals by executing
steps to enhance Endeavour's overall value from both an operational, as well
as a financial perspective," said William L. Transier, chairman, chief
executive officer and president. "The combination of the West Rochelle
discovery, our recent financing and the sale of our Cygnus asset positions
the company to execute our growth strategy."

Highlights for the third quarter are as follows:

West Rochelle Discovery Confirms Gas and Oil Reservoir - Located in the
Central North Sea, the West Rochelle well was spud on September 3rd and
reached a total depth of 10,787ft on October 7th encountering natural gas
with an oil rim in an excellent quality reservoir similar to that discovered
at Rochelle. The well has been sidetracked to the north and has encountered
hydrocarbons that extend the West Rochelle area. The well straddles Blocks
15/26c and 15/26b and lies west of the Rochelle gas field in Block 15/27. The
West Rochelle accumulation is expected to be developed as a tie-back to the
Rochelle field.

Completed the Sale of the UK Cygnus Asset - In October, Endeavour
successfully completed the sale of its UK Cygnus asset to Bayerngas UK Ltd.
for US$110 million in cash. The cash proceeds were not burdened by any
current taxes payable and are being used primarily to accelerate the
company's development projects.

Continued US Drilling Success and Momentum in the Haynesville - In the
third quarter, net sales from US production more than doubled from the
previous quarter. Production growth was driven by activity in the Louisiana
Haynesville shale play where the company had four successful completions
during the quarter. The Woodard 10-H well, where Endeavour holds a 40.8%
working interest, flowed gas at an initial production rate of 22.6 million
cubic feet of gas equivalent per day. The company currently has an interest
in four additional Haynesville wells waiting on completion, including two
wells operated by its joint venture partner Cohort Energy. Endeavour plans to
continue a conservative 1-2 rig drilling program for the remainder of the
year in Louisiana and East Texas maintaining flexibility to adjust drilling
activity in accordance with current and future gas prices. In the
Pennsylvania Marcellus shale play, the company will participate in two
horizontal wells to be drilled in the fourth quarter to further evaluate the
Daniel Field in Cameron County where an integrated development plan is being
formalized. In Alabama, the Hillwood-operated joint venture successfully
drilled two vertical pilot tests which will be evaluated for future
horizontal re-entries and/or completion tests.

Completed a Financing Transaction for US$160 million - In August,
Endeavour closed on a US$150 million senior secured credit facility. Of the
total proceeds, US$66 million was used to repay the company senior bank and
second lien facilities. This facility offered the company the flexibility to
sell assets and reinvest the proceeds in the business, make acquisitions and
incur additional debt. It bears cash interest of 12 percent plus three
percent payment in-kind payable in cash at the company's option. The facility
contains a covenant package customary for transactions of this type and is
callable after the first year. During October 2010, the company borrowed an
additional US$10 million as provided under this facility.

Awarded Blocks in the 26th Offshore Gas and Licensing Round - Endeavour
has been awarded licenses in four blocks or part blocks in the United Kingdom
North Sea. The blocks are located in the company's core focus areas.

Share Consolidation Effected in the Form of a Reverse Stock Split -
Earlier this week, the company announced a 1-for-7 share consolidation of its
common stock in the form of a reverse stock split that is expected to be
effective at the opening of trading on November 18, 2010. With this share
consolidation, the company expects to make the stock available to a broader
range of investors and position the company's trading metrics more in-line
with its peers. As a result of the share consolidation, every seven shares of
common stock outstanding will automatically be combined into one share of
common stock and holders who would otherwise receive fractional shares will
have their shares rounded up to the next whole share. The company has not
restated any share or per share amounts as a result of this share
consolidation within this release.

Guidance for Year 2010

The table below sets forth estimates for operating statistics for the
full year ending December 31, 2010.

    Estimated Average Production (A)
       Daily Production (BOE per day)       4,500  to  6,000

    Differentials (B)
       Oil ($/Bbl)                         $(5.00) to $(6.00)
       Gas ($Mcf)                          $(0.50) to $(0.60)

    Gas percentage of Total                    55% to     60%
    Lease Operating Expense ($ per barrel)  $8.00  to $10.00

     (A)  Actual results may differ materially from these estimates.

     (B)  For purposes of the estimates, assumptions of price
          differentials are based on location, quality and other factors,
          excluding the effects of derivative financial instruments.  Gas
          price differentials are stated as premiums (discounts) from Henry
          Hub pricing, and oil price differentials are stated as premiums
          (discounts) from West Texas Intermediate pricing.

Earnings Conference Call, Wednesday, November 3, 2010 at 9:00 a.m.,
Central Daylight Time
, 2:00 p.m. British Time

Endeavour International will host a conference call and web cast to
discuss its 2010 third quarter financial and operating results on Wednesday,
November 3, 2010
at 9 a.m. Central Daylight Time, 2 p.m. British Time. To
participate and ask questions during the conference call, dial the local
country telephone number and the confirmation code 9961634. The toll-free
numbers are +1-888-812-8569 in the United States and +0-808-101-1402 in the
United Kingdom. Other international callers should dial +1-913-312-0970
(tolls apply). To listen only to the live audio web cast access Endeavour's
home page at www.endeavourcorp.com. A replay will be available
beginning at 12:00 p.m. Central Daylight Time on November 3 through
12:00 p.m. on November 10 by dialing toll free +1-888-203-1112 (U.S.) or
+1-719-457-0820 (international), confirmation code 9961634.

Endeavour International Corporation is an oil and gas exploration and
production company focused on the acquisition, exploration and development of
energy reserves in the North Sea and the United States. For more information,
visit endeavourcorp.com.

Additional information for investors:

Certain statements in this news release should be regarded as
"forward-looking" statements within the meaning of the securities laws. These
statements speak only of as of the date made. Such statements are subject to
assumptions, risk and uncertainty. Actual results or events may vary
materially.

As of January 1, 2010, the Securities and Exchange Commission (SEC)
changed its rules to permit oil and gas companies, in their filings with the
SEC, to disclose not only proved reserves, but also probable reserves and
possible reserves. Proved oil and gas reserves are those quantities of oil
and gas, which, by analysis of geosciences and engineering data, can be
estimated with reasonable certainty to be economically producible - from a
given date forward, from known reservoirs, and under existing economic
conditions, operating methods, and government regulations - prior to the time
at which contracts providing the right to operate expire. Probable reserves
include those additional reserves that a company believes are as likely as
not to be recovered and possible reserves include those additional reserves
that are less certain to be recovered than probable reserves. We use may use
certain terms in our news releases, such as "reserve potential," that the
SEC's guidelines strictly prohibit us from including in filings with the SEC.
In addition, we do not represent that the probable or possible reserves
described herein meet the recoverability thresholds established by the SEC in
its new definitions. Investors are urged to also consider closely the
disclosure in our filings with the SEC, available from our website at
www.endeavourcorp.com. Endeavour is also subject to the requirements
of the London Stock Exchange and considers the disclosures in this release to
be appropriate and/or required under the guidelines of that exchange.

(All amounts are in US$ unless otherwise noted)

                     Endeavour International Corporation
                    Condensed Consolidated Balance Sheets
                                 (Unaudited)
                            (Amounts in thousands)

                                              September            December
                                                   30,                 31,
                                                  2010                2009
                                                  ----                ----

                                    Assets
    Current Assets:
      Cash and cash equivalents                $16,527             $27,287
      Restricted cash                           32,524               2,879
      Accounts receivable                        9,812              14,800
      Prepaid expenses and other current
       assets                                    9,558              10,118
      ----------------------------------         -----              ------
        Total Current Assets                    68,421              55,084

    Property and Equipment, Net                334,749             266,587
    Assets Held for Sale                        21,145                   -
    Goodwill                                   211,886             211,886
    Other Assets                                26,423               5,322
    ------------                                ------               -----

    Total Assets                              $662,624            $538,879
    ------------                              --------            --------

                  Liabilities and Stockholders' Equity
    Current Liabilities:
      Accounts payable                         $30,476             $12,401
      Current maturities of debt                16,500                   -
      Accrued expenses and other                16,850              17,798
      --------------------------                ------              ------
        Total Current Liabilities               63,826              30,199

    Long-Term Debt                             314,708             223,385
    Deferred Taxes                              86,887              80,692
    Other Liabilities                           72,722              85,412
    -----------------                           ------              ------
        Total Liabilities                      538,143             419,688

    Commitments and Contingencies

    Series C Convertible Preferred
     Stock                                      53,152              59,058

    Stockholders' Equity                        71,329              60,133
    --------------------                        ------              ------

    Total Liabilities and
     Stockholders' Equity                     $662,624            $538,879
    ---------------------                     --------            --------
                          Endeavour International Corporation
                     Condensed Consolidated Statement of Operations
                                      (Unaudited)
                     (Amounts in thousands, except per share data)

                                               Three Months Ended
                                                  September 30,
                                                  -------------
                                               2010            2009
                                               ----            ----
    Revenues                                $19,849          $7,759

    Cost of Operations:
      Operating expenses                      4,595           3,876
      Depreciation, depletion and
       amortization                           7,697           5,646
      Impairment of oil and gas
       properties                                 -               -
      General and administrative              4,237           4,091
      --------------------------              -----           -----
      Total Expenses                         16,529          13,613
      --------------                         ------          ------

    Income (Loss) From Operations             3,320          (5,854)
    -----------------------------             -----          ------

    Other Income (Expense):
      Derivatives:
        Realized gains (losses)                (452)          7,530
        Realized loss on early
         termination                        (10,201)              -
        Unrealized gains (losses)             6,441          (4,360)
      Interest expense                      (10,474)         (3,919)
      Interest income and other              (2,327)          1,402
      -------------------------              ------           -----
    Total Other Income (Expense)            (17,013)            653
    ----------------------------            -------             ---

    Loss Before Income Taxes                (13,693)         (5,201)
    Income Tax Expense (Benefit)             (2,001)           (441)
    ----------------------------             ------            ----

    Loss from Continuing Operations         (11,692)         (4,760)
    Income from Discontinued
     Operations                                   -             277
    ------------------------                    ---             ---

    Net Loss                                (11,692)         (4,483)
    Preferred Stock Dividends                   546           2,696
    -------------------------                   ---           -----

    Net Loss to Common Stockholders        $(12,238)        $(7,179)
    -------------------------------        --------         -------

    Basic and Diluted Net Loss
     per Common Share:
      Continuing operations                  $(0.07)         $(0.06)
      Discontinued operations                     -               -
      -----------------------                   ---             ---
    Total                                    $(0.07)         $(0.06)
    -----                                    ------          ------

    Weighted Average Number of
     Common Shares Outstanding:
      Basic and Diluted                     167,641         130,109
      -----------------                     -------         -------

                                                Nine Months Ended
                                                  September 30,
                                                  -------------
                                              2010              2009
                                              ----              ----
    Revenues                               $55,102           $42,179

    Cost of Operations:
      Operating expenses                    10,881            14,455
      Depreciation, depletion and
       amortization                         21,290            24,828
      Impairment of oil and gas
       properties                            7,692            30,645
      General and administrative            12,873            12,041
      --------------------------            ------            ------
      Total Expenses                        52,736            81,969
      --------------                        ------            ------

    Income (Loss) From Operations            2,366           (39,790)
    -----------------------------            -----           -------

    Other Income (Expense):
      Derivatives:
        Realized gains (losses)             (1,552)           28,581
        Realized loss on early
         termination                       (10,201)                -
        Unrealized gains (losses)           11,477           (38,455)
      Interest expense                     (21,733)          (12,054)
      Interest income and other              1,281            (6,932)
      -------------------------              -----            ------
    Total Other Income (Expense)           (20,728)          (28,860)
    ----------------------------           -------           -------

    Loss Before Income Taxes               (18,362)          (68,650)
    Income Tax Expense (Benefit)             7,916           (10,477)
    ----------------------------             -----           -------

    Loss from Continuing Operations        (26,278)          (58,173)
    Income from Discontinued
     Operations                                  -            46,646
    ------------------------                   ---            ------

    Net Loss                               (26,278)          (11,527)
    Preferred Stock Dividends                1,682             8,061
    -------------------------                -----             -----

    Net Loss to Common Stockholders       $(27,960)         $(19,588)
    -------------------------------       --------          --------

    Basic and Diluted Net Loss
     per Common Share:
      Continuing operations                 $(0.17)           $(0.51)
      Discontinued operations                    -              0.36
      -----------------------                  ---              ----
    Total                                   $(0.17)           $(0.15)
    -----                                   ------            ------

    Weighted Average Number of
     Common Shares Outstanding:
      Basic and Diluted                    159,801           129,719
      -----------------                    -------           -------
                          Endeavour International Corporation
                    Condensed Consolidated Statement of Cash Flows
                                      (Unaudited)
                                (Amounts in thousands)

                                             Nine Months Ended September 30,
                                             -------------------------------
                                                 2010                2009
                                                 ----                ----
    Cash Flows from Operating Activities:
      Net loss                                 $(26,278)           $(11,527)
      Adjustments to reconcile net loss to
       net cash
        provided by operating activities:
        Depreciation, depletion and
         amortization                            21,290              29,509
        Impairment of oil and gas properties      7,692              30,645
        Deferred tax expense (benefit)            6,195              (3,269)
        Unrealized (gains) losses on
         derivatives                            (11,477)             38,455
        Gain on sale of Norwegian operations          -             (47,420)
        Other                                    13,767              13,577
        Changes in operating assets and
         liabilities                             20,113             (10,286)
        -------------------------------          ------             -------
    Net Cash Provided by Operating
     Activities                                  31,302              39,684

    Cash Flows From Investing Activities:
      Capital expenditures                      (75,677)            (88,639)
      Acquisitions                              (39,279)             (4,127)
      Proceeds from sales, net of cash                -             144,765
      (Increase) decrease in restricted cash    (29,645)             20,366
      --------------------------------------    -------              ------
    Net Cash Provided by (Used in)
     Investing Activities                      (144,601)             72,365

    Cash Flows From Financing Activities:
      Borrowings (repayments) of borrowings     100,058             (64,458)
      Proceeds from issuance of common stock     30,181                   -
      Dividends paid                             (1,563)             (7,969)
      Other financing                           (26,137)                 27
      ---------------                           -------                 ---
    Net Cash Provided by (Used in)
     Financing Activities                       102,539             (72,400)

    Net Increase (Decrease) in Cash and
     Cash Equivalents                           (10,760)             39,649
    Cash and Cash Equivalents, Beginning of
     Period                                      27,287              38,156
    ---------------------------------------      ------              ------

    Cash and Cash Equivalents, End of
     Period                                     $16,527             $77,805
    ---------------------------------           -------             -------
                             Endeavour International Corporation
                                    Operating Statistics
                                         (Unaudited)

                                                         Three Months
                                                             Ended
                                                        September 30,
                                                        -------------
                                                     2010             2009
                                                     ----             ----
    Sales volume (1)
      Oil and condensate sales (Mbbls):
        United Kingdom                                127               82
        United States                                   2                1
        -------------                                 ---              ---
        Continuing operations                         129               83
        Discontinued operations - Norway                -                -
        --------------------------------              ---              ---
        Total                                         129               83
        -----                                         ---              ---

      Gas sales (MMcf):
        United Kingdom                                869              629
        United States                                 978               19
        -------------                                 ---              ---
        Continuing operations                       1,847              648
        Discontinued operations - Norway                -                -
        --------------------------------              ---              ---
        Total                                       1,847              648
        -----                                       -----              ---

      Oil equivalent sales (MBOE)
        United Kingdom                                272              187
        United States                                 165                4
        -------------                                 ---              ---
        Continuing operations                         437              191
        Discontinued operations - Norway                -                -
        --------------------------------              ---              ---
        Total                                         437              191
        -----                                         ---              ---

      Total BOE per day                             4,755            2,072
      -----------------                             -----            -----

    Physical production volume (BOE per day)
     (2):
        United Kingdom                              2,993            2,777
        United States                               1,995               32
        -------------                               -----              ---
        Continuing operations                       4,988            2,809
        Discontinued operations - Norway                -                -
        --------------------------------              ---              ---
        Total                                       4,988            2,809
        -----                                       -----            -----

    Realized Prices (3)
      Oil and condensate price ($ per Bbl):
        Before commodity derivatives               $75.64           $61.73
        Effect of commodity derivatives            (3.11)            46.05
        -------------------------------             -----            -----
        Realized prices including commodity
         derivatives                               $72.53          $107.78
        -----------------------------------        ------          -------

      Gas price ($ per Mcf):
        Before commodity derivatives                $5.44            $4.10
        Effect of commodity derivatives            (0.03)             5.75
        -------------------------------             -----             ----
        Realized prices including commodity
         derivatives                                $5.41            $9.85
        -----------------------------------         -----            -----

      Equivalent oil price ($ per BOE):
        Before commodity derivatives               $45.37           $40.70
        Effect of commodity derivatives            (1.03)            39.50
        -------------------------------             -----            -----
        Realized prices including commodity
         derivatives                               $44.34           $80.20
        -----------------------------------        ------           ------
                                                     Nine Months Ended
                                                       September 30,
                                                       -------------
                                                     2010           2009
                                                     ----           ----
    Sales volume (1)
      Oil and condensate sales (Mbbls):
        United Kingdom                                429            494
        United States                                   5              2
        -------------                                 ---            ---
        Continuing operations                         434            496
        Discontinued operations - Norway                -            310
        --------------------------------              ---            ---
        Total                                         434            806
        -----                                         ---            ---

      Gas sales (MMcf):
        United Kingdom                              2,614          2,777
        United States                               1,699            130
        -------------                               -----            ---
        Continuing operations                       4,313          2,907
        Discontinued operations - Norway                -            686
        --------------------------------              ---            ---
        Total                                       4,313          3,593
        -----                                       -----          -----

      Oil equivalent sales (MBOE)
        United Kingdom                                864            957
        United States                                 288             23
        -------------                                 ---            ---
        Continuing operations                       1,152            980
        Discontinued operations - Norway                -            425
        --------------------------------              ---            ---
        Total                                       1,152          1,405
        -----                                       -----          -----

      Total BOE per day                             4,222          5,147
      -----------------                             -----          -----

    Physical production volume (BOE per day)
     (2):
        United Kingdom                              3,130          3,675
        United States                               1,117             54
        -------------                               -----            ---
        Continuing operations                       4,247          3,729
        Discontinued operations - Norway                -          1,545
        --------------------------------              ---          -----
        Total                                       4,247          5,274
        -----                                       -----          -----

    Realized Prices (3)
      Oil and condensate price ($ per Bbl):
        Before commodity derivatives               $74.72         $47.38
        Effect of commodity derivatives            (7.12)          24.47
        -------------------------------             -----          -----
        Realized prices including commodity
         derivatives                               $67.60         $71.85
        -----------------------------------        ------         ------

      Gas price ($ per Mcf):
        Before commodity derivatives                $5.26          $5.99
        Effect of commodity derivatives              0.36           2.46
        -------------------------------              ----           ----
        Realized prices including commodity
         derivatives                                $5.62          $8.45
        -----------------------------------         -----          -----

      Equivalent oil price ($ per BOE):
        Before commodity derivatives               $47.81         $42.51
        Effect of commodity derivatives            (1.35)          20.34
        -------------------------------             -----          -----
        Realized prices including commodity
         derivatives                               $46.46         $62.85
        -----------------------------------        ------         ------

    (1)  We record oil revenues on the sales method, i.e. when delivery
         has occurred.  Actual production may differ based on the timing of
         tanker liftings.  We use the entitlements method to account for
         sales of gas production.
    (2)  The average sales prices reflect both our continuing and
         discontinued operations and include realized gains and losses for
         derivative contracts we utilize to manage price risk related to our
         future cash flows.
                           Endeavour International Corporation
                       Reconciliation of GAAP to Non-GAAP Measures
                                       (Unaudited)
                                 (Amounts in thousands)

    As required under Regulation G of the Securities Exchange Act of
    1934, provided below are reconciliations of net income (loss) to the
    following non-GAAP financial measures:  net income, as adjusted,
    Adjusted EBITDA and discretionary cash flow.  We use these non-GAAP
    measures as key metrics for our management and to demonstrate our
    ability to internally fund capital expenditures and service debt.
    The non-GAAP measures are useful in comparisons of oil and gas
    exploration and production companies as they exclude non-operating
    fluctuations in assets and liabilities.

                              Three Months Ended        Nine Months Ended
                                 September 30,            September 30,
                                 -------------            -------------
                                2010         2009        2010          2009
                                ----         ----        ----          ----
    Net loss                $(11,692)     $(4,483)   $(26,278)     $(11,527)

    Depreciation, depletion
     and amortization          7,697        5,646      21,290        29,509
    Impairment of oil and
     gas properties                -            -       7,692        30,645
    Deferred tax expense
     (benefit)                (2,249)         327       6,195        (3,269)
    Gain on asset sales            -         (277)          -       (47,420)
    Unrealized (gain) loss
     on derivatives           (6,441)       4,360     (11,477)       38,455
    Realized loss on early
     termination of
     derivatives              10,201            -      10,201             -
    Other                      8,613        2,043       3,566        13,577
    -----                      -----        -----       -----        ------

    Discretionary Cash Flow
     (1)                      $6,129       $7,615     $11,189       $49,970
    -----------------------   ------       ------     -------       -------

    Net loss to common
     shareholders           $(12,238)     $(7,179)   $(27,960)     $(19,588)
    Impairment of oil and
     gas properties (net of
     tax) (2)                      -            -       7,692        15,988
    Unrealized (gain) loss
     on derivatives (net of
     tax) (3)                 (2,413)       2,885      (5,070)       23,632
    Currency impact on
     deferred taxes               95       (2,106)        (51)        8,143
    ------------------           ---       ------         ---         -----

    Net Income (Loss) as
     Adjusted               $(14,556)     $(6,400)   $(25,389)      $28,175
    --------------------    --------      -------    --------       -------

    Net loss                $(11,692)     $(4,483)   $(26,278)     $(11,527)

    Unrealized (gain) loss
     on derivatives           (6,441)       4,360     (11,477)       38,455
    Realized loss on early
     termination of
     derivatives              10,201            -      10,201             -
    Net interest expense      10,467        3,877      21,704        11,860
    Depreciation, depletion
     and amortization          7,697        5,646      21,290        29,509
    Impairment of oil and
     gas properties                -            -       7,692        30,645
    Income tax expense
     (benefit)                (2,001)        (441)      7,916        (5,047)
    Gain on asset sales            -         (277)          -       (47,420)
    -------------------          ---         ----         ---       -------

    Adjusted EBITDA           $8,231       $8,681   $31,048       $46,475
    ---------------           ------       ------   -------       -------

    (1)  Discretionary cash flow is equal to cash flow from operating
         activities before the changes in operating assets and liabilities,
         excluding the early termination of commodity derivatives.
    (2)  Net of tax benefits of $(14,657) for the nine months ended
         September 30, 2009.
    (3)  Net of tax (benefits) expense of $(4,029), $1,475, $(6,408) and
         $14,823, respectively.

Investor Relations, Mike Kirksey, +1-713-307-8788, or Darcey Matthews, +1-713-307-8711, both of Endeavour International Corporation; or Public Relations - UK Media, Philip Dennis, +44-(0)207-861-3919, or Henry Lerwill, +44-(0)207-861-3169, both of Pelham for Endeavour International Corporation

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