Post-closing events:

As part of the company's proactive management of its debt, CGG accelerated in July the refinancing of its credit facilities by extending the debt maturity periods:

* A five-year-$200-million credit facility was signed with a 4.4% interest rate, notably to reimburse the 2013 tranche of our Fugro Vendor Loan * The two existing $289m Revolving Credit Facilities expiring in January 2014 were fully renewed with: * A-$165-million US Revolving Credit Facility for a period of 3+1+1 year * A-$325-million French Revolving Credit Facility for a period of three year with an option for five year * CGG also sent an early redemption notice to repay $125 million of the 9.5% 2016 High Yield Bond

Confirmation of our 2013 Financial Objectives

* 25% growth in revenue * To address sustained demand in multi-client especially in Brazil, multi-client cash capex was revised up to $400-$450 million with a prefunding rate confirmed above 75% * Industrial capex maintained around $300-$350 million * Positive Free Cash Flow generation * Return on Capital Employed improvement Second Quarter 2013 Key Figures +------------------------+--------------+------------------+--------------+ | |Second Quarter|First Quarter 2013|Second Quarter| | | 2012 | | 2013 | | | | | | |In million $ | | | | +------------------------+--------------+------------------+--------------+ |Group Revenue | 831 | 871 | 1 032 | +------------------------+--------------+------------------+--------------+ |Sercel | 285 | 251 | 254 | +------------------------+--------------+------------------+--------------+ |Acquisition | 466 | 594 | 605 | +------------------------+--------------+------------------+--------------+ |Geology, Geophysics & | 200 | 260 | 367 | |Reservoir (GGR) | | | | +------------------------+--------------+------------------+--------------+ |Group EBITDAs | 229 | 313 | 324 | +------------------------+--------------+------------------+--------------+ |Group EBIT | 96 | 162 | 117 | +------------------------+--------------+------------------+--------------+ | Non-recurring items| 0 | 35 | (11) | |related to Fugro | | | | +------------------------+--------------+------------------+--------------+ |Group EBIT before NRI | 96 | 128 | 128 | +------------------------+--------------+------------------+--------------+ |Sercel | 92 | 69 | 71 | +------------------------+--------------+------------------+--------------+ |Acquisition | 5 | 47 | 28 | +------------------------+--------------+------------------+--------------+ |GGR | 30 | 81 | 96 | +------------------------+--------------+------------------+--------------+ |Net Income | 34 | 79 | 36 | +------------------------+--------------+------------------+--------------+ |Cash Flow from | | | | |Operations | 104 | 63 | 204 | +------------------------+--------------+------------------+--------------+ |Free Cash Flow | (129) | (148) | (43) | +------------------------+--------------+------------------+--------------+ |Net Debt | 1 600 | 2 092 | 2 170 | +------------------------+--------------+------------------+--------------+ |Capital Employed | 5 514 | 6 776 | 6 868 | +------------------------+--------------+------------------+--------------+ |Backlog | 1 300 | 1 400 | 1 300 | +------------------------+--------------+------------------+--------------+ Second Quarter 2013 Financial Results by Division Equipment +---------------------------+--------------+-------------+--------------+ | Equipment |Second Quarter|First Quarter|Second Quarter| | | 2012 | 2013 | 2013 | | | | | | | In million $ | | | | +---------------------------+--------------+-------------+--------------+ | Equipment Total Revenue | 285 | 251 | 254 | +---------------------------+--------------+-------------+--------------+ | External Revenue | 232 | 190 | 188 | +---------------------------+--------------+-------------+--------------+ | EBITDAs | 103 | 81 | 83 | +---------------------------+--------------+-------------+--------------+ | Margin | 36% | 32% | 33% | +---------------------------+--------------+-------------+--------------+ | EBIT | 92 | 69 | 71 | +---------------------------+--------------+-------------+--------------+ | Margin | 32% | 28% | 28% | +---------------------------+--------------+-------------+--------------+ | Capital Employed | | | | | (in billion $) | 0.8 | 0.8 | | +---------------------------+--------------+-------------+--------------+

Equipment division Total Revenue was $254 million, down 11% compared to second the quarter of 2012 and up slightly sequentially. Marine equipment sales represented 48% of total revenue. Sales were strong in Eastern Europe, Asia and Russia. The commercial success of UNITE, Sercel's wireless land acquisition system, is confirmed with sales in North America and Latin America during the quarter. External sales were $188 million, down 19% and internal sales represented 26% of total revenue. Sercel successfully launched its new multi-sensor solid streamer, the Sentinel® MS streamer at the European seismic convention in June. It offers directional measurements for both cross-line and vertical wave fronts and delivers multi-sensor data sets for enhanced broadband imaging.

Equipment division EBITDAs was $83 million, a margin of 33%.

Equipment division EBIT was $71 million, a margin of 28%.

Equipment division Capital Employed was $0.8 billion at the end of June 2013.

Acquisition +----------------------------+--------------+-------------+--------------+ | Acquisition |Second Quarter|First Quarter|Second Quarter| | | 2012 | 2013 | 2013 | | | | | | | In million $ | | | | +----------------------------+--------------+-------------+--------------+ | Acquisition Total Revenue | 466 | 594 | 605 | +----------------------------+--------------+-------------+--------------+ | External Revenue | 400 | 421 | 477 | +----------------------------+--------------+-------------+--------------+ | Total Marine | 335 | 449 | 511 | +----------------------------+--------------+-------------+--------------+ | Total Land and Airborne | 131 | 145 | 94 | | Acquisition | | | | +----------------------------+--------------+-------------+--------------+ | EBITDAs | 60 | 121 | 121 | +----------------------------+--------------+-------------+--------------+ | Margin | 13% | 20% | 20% | +----------------------------+--------------+-------------+--------------+ | EBIT | 5 | 47 | 28 | +----------------------------+--------------+-------------+--------------+ | Margin | 1% | 8% | 5% | +----------------------------+--------------+-------------+--------------+ | Capital Employed | | | | | (in billion $) | - | 3.3 | 3.3 | +----------------------------+--------------+-------------+--------------+

Acquisition division Total Revenue increased sharply to $605 million, up 30% year-on-year and up 2% sequentially, due to an excellent operational performance by Marine acquisition. External revenue was $477 million.

* Marine Acquisition revenue increased sharply to $511 million, up 53% year-on-year and 14% sequentially. Production was high this quarter for the whole fleet with record availability and production rates at 93% and 92%. 45% of the fleet was acquiring BroadSeis™ projects. A large part of the fleet was located in the North Sea where six vessels were in operation, four in the Gulf of Mexico and six in Asia. 21% of the fleet was dedicated to multi-client programs. * Land and Airborne Acquisition revenue totalled $94 million, down 28% year-on-year and 35% sequentially. During this typically weak quarter, land crews operated in challenging safety and weather conditions. The Airborne organization should join CGG in early September.

Acquisition division EBITDAs was $121 million, a margin of 20%.

Acquisition division EBIT was $28 million, a margin of 5%. Marine acquisition continued to improve its operational and financial performance with a record utilization rate. The traditionally low level of land activity in the second quarter, due to the demobilization of the winter crews in North America, was impacted by difficult safety conditions in North Africa and in Egypt and by unfavorable climate conditions particularly in Oman and France.

Acquisition division Capital Employed was $3.3 billion at the end of June 2013.

Geology, Geophysics & Reservoir (GGR) --------------------------+--------------+-------------+--------------+ GGR |Second Quarter|First Quarter|Second Quarter| | 2012 | 2013 | 2013 | | | | | In million $ | | | | --------------------------+--------------+-------------+--------------+ GGR Total Revenue | 200 | 260 | 367 | --------------------------+--------------+-------------+--------------+ Multi-client and basin | | | | data | 86 | 123 | 215 | --------------------------+--------------+-------------+--------------+ Prefunding | 45 | 61 | 87 | --------------------------+--------------+-------------+--------------+ Subsurface Imaging | | | | & Reservoir | 114 | 137 | 152 | --------------------------+--------------+-------------+--------------+ EBITDAs | 104 | 163 | 218 | --------------------------+--------------+-------------+--------------+ Margin | 52% | 63% | 59% | --------------------------+--------------+-------------+--------------+ EBIT | 30 | 81 | 96 | --------------------------+--------------+-------------+--------------+ Margin | 15% | 31% | 26% | -------------------------+--------------+-------------+--------------+ Capital Employed | | | | (in billion $) | | 2.7 | 2.8 | -------------------------+--------------+-------------+--------------+

GGR Division Total Revenue was $367 million, up 84% year-on-year and up 41% sequentially due to a good performance across all businesses in a strong market.

* Multi-client and basin data revenue increased sharply to $215 million, up 149% year-on-year and 75% sequentially. * Prefunding revenue was $87 million. Multi-client cash capex was at $107 million and was mainly focused offshore in the Gulf of Mexico with the continuation of our IBALT program and in the North Sea. Onshore multi-client cash capex was spent in the Marcellus region. After- sales were at a high level across the regions and particularly in Brazil, ahead of the October Santos pre-salt bid round. The multi-client cash prefunding rate was 84% this quarter. * Imaging & Reservoir revenue was $152 million, up 35% year-on-year and 12% sequentially. The imaging and reservoir characterization markets remain buoyant due to the increasing volume of data and by a high number of projects in more complex geologies.

GGR Division EBITDAs was $218 million, a margin of 59%.

GGR Division EBIT was $96 million, a margin of 26%. The depreciation rate averaged 51%, the Net Book Value at the end of June 2013 was $751 million.

GGR Division Capital Employed was $2.8 billion at the end of June 2013.

Second Quarter 2013 Financial Results

Group Total Revenue was $1.032 billion, up 24% year-on-year and 18% sequentially. It breaks down to 18% from the Equipment division, 46% from the Acquisition division, and 36% from the GGR division.

Group EBITDAs was $324 million, a margin of 31%. Before the non-recurring charge associated with the Fugro Geoscience deal, Group EBITDAs was $333 million.

+-----------------------------+--------------+-------------+--------------+ | | | | | | |Second Quarter|First Quarter|Second Quarter| | | 2012 | 2013 | 2013 | | | | | | | In million $ | | | | +-----------------------------+--------------+-------------+--------------+ | Group EBITDAs | 229 | 313 | 324 | +-----------------------------+--------------+-------------+--------------+ | Margin | 28% | 36% | 31% | +-----------------------------+--------------+-------------+--------------+ | Sercel | 103 | 81 | 83 | +-----------------------------+--------------+-------------+--------------+ | Acquisition | 60 | 121 | 121 | +-----------------------------+--------------+-------------+--------------+ | GGR | 104 | 163 | 218 | +-----------------------------+--------------+-------------+--------------+ | Eliminations | (26) | (83) | (75) | +-----------------------------+--------------+-------------+--------------+ | Corporate | (12) | (11) | (14) | +-----------------------------+--------------+-------------+--------------+ |Non-recurring items related | 0 | | (10) | | to Fugro | | 41 | | +-----------------------------+--------------+-------------+--------------+

Group EBIT was $117 million, a margin of 11%. Before the non-recurring charge associated with the Fugro Geoscience deal, Group EBIT was $128 million, a margin of 12%.

+-------------------------+--------------+-------------+--------------+ | | | | | | |Second Quarter|First Quarter|Second Quarter| | | 2012 | 2013 | 2013 | | | | | | | In million $ | | | | +-------------------------+--------------+-------------+--------------+ | Group EBIT | 96 | 162 | 117 | +-------------------------+--------------+-------------+--------------+ | Margin | 11% | 19% | 11% | +-------------------------+--------------+-------------+--------------+ | Sercel | 92 | 69 | 71 | +-------------------------+--------------+-------------+--------------+ | Acquisition | 5 | 47 | 28 | +-------------------------+--------------+-------------+--------------+ | GGR | 30 | 81 | 96 | +-------------------------+--------------+-------------+--------------+ | Eliminations | (18) | (56) | (51) | +-------------------------+--------------+-------------+--------------+ | Corporate | (13) | (13) | (15) | +-------------------------+--------------+-------------+--------------+ | Non-recurring items | | | | | related to | 0 | | (11) | | Fugro | | 35 | | +-------------------------+--------------+-------------+--------------+

Financial Charges were $47 million:

* Cost of Debt was $47 million, while the total amount of interest paid during the quarter was $58 million

Taxes were $35 million including the $2 million favorable impact of deferred tax on currency translation.

Group Net Income was $36 million.

After minority interests, Net Income attributable to the owners of CGG was a gain of $35 million/EUR27 million. EPS was positive at $0.20/EUR0.15.

Cash Flow

Cash Flow from operations was $204 million, a significant improvement compared to the first quarter 2013 figure of $63 million.

Global Capex was $198 million this quarter.

* Industrial capex was $77 million * Research & Development capex was $14 million * Multi-client cash capex was $107 million +--------------------+----------------+---------------+----------------+ | | | | | | | Second Quarter | First Quarter | Second Quarter | | | 2012 | 2013 | 2013 | | | | | | |In million $ | | | | +--------------------+----------------+---------------+----------------+ | Capex | 179 | 202 | 198 | +--------------------+----------------+---------------+----------------+ | Industrial | 90 | 64 | 77 | +--------------------+----------------+---------------+----------------+ | R&D | 7 | 11 | 14 | +--------------------+----------------+---------------+----------------+ | Multi-client Cash | 82 | 127 | 107 | | | | | | | Marine MC | 41 | 119 | 87 | | | | | | | Other MC | 41 | 8 | 20 | +--------------------+----------------+---------------+----------------+

Free Cash Flow

After $58 million interest expenses paid during the quarter and Capex, free cash flow was negative at $(43) million.

Second Quarter 2013 Comparisons with Second Quarter 2012

+---------------------------------+-------------+------------+------------+ | | | | | |Consolidated Income Statements | | | | | | Second | First | Second | | | Quarter | Quarter | Quarter | | | 2012 | 2013 | 2013 | |In million $ | | | | +---------------------------------+-------------+------------+------------+ |Exchange rate euro/dollar | 1.298 | 1.329 | 1.296 | +---------------------------------+-------------+------------+------------+ |Operating Revenue | 831.0 | 870.7 | 1031.7 | +---------------------------------+-------------+------------+------------+ | Sercel | 285.2 | 250.7 | 254.3 | +---------------------------------+-------------+------------+------------+ | Acquisition | 466.5 | 594.0 | 605.4 | +---------------------------------+-------------+------------+------------+ | GGR | 199.5 | 259.6 | 366.9 | +---------------------------------+-------------+------------+------------+ | Elimination | (120.2) | (233.6) | (194.9) | +---------------------------------+-------------+------------+------------+ |Gross Margin | 177.8 | 196.1 | 237.9 | +---------------------------------+-------------+------------+------------+ |Operating Income | 85.4 | 151.8 | 121.5 | +---------------------------------+-------------+------------+------------+ |Equity from Investments | 10.1 | 10.6 | (4.5) | +---------------------------------+-------------+------------+------------+ |EBIT | 95.5 | 162.4 | 117.0 | +---------------------------------+-------------+------------+------------+ | Sercel | 91.7 | 69.1 | 71.0 | +---------------------------------+-------------+------------+------------+ | Acquisition | 5.3 | 47.2 | 28.0 | +---------------------------------+-------------+------------+------------+ | GGR | 29.9 | 80.7 | 95.9 | +---------------------------------+-------------+------------+------------+ | Non-recurring items related to | 0.0 | 34.7 | (10.8) | | Fugro| | | | +---------------------------------+-------------+------------+------------+ | Corporate and eliminations | (31.4) | (69.3) | (67.1) | +---------------------------------+-------------+------------+------------+ |Net Financial Costs | (34.0) | (51.3) | (46.7) | +---------------------------------+-------------+------------+------------+ |Income Taxes | (24.4) | (25.3) | (36.3) | +---------------------------------+-------------+------------+------------+ |Deferred Tax on Currency | (2.8) | (6,7) | 1.7 | | Translation | | | | +---------------------------------+-------------+------------+------------+ |Net Income | 34.3 | 79.1 | 35.7 | +---------------------------------+-------------+------------+------------+ |Earnings per share in $ | 0.19 | 0.43 | 0.20 | +---------------------------------+-------------+------------+------------+ |Earnings per share in EUR | 0.14 | 0.33 | 0.15 | +---------------------------------+-------------+------------+------------+ |EBITDAs | 228.8 | 313.2 | 323.8 | +---------------------------------+-------------+------------+------------+ | Sercel | 102.5 | 81.2 | 83.1 | +---------------------------------+-------------+------------+------------+ | Acquisition | 59.6 | 121.2 | 120.6 | +---------------------------------+-------------+------------+------------+ | GGR | 103.9 | 163.5 | 217.9 | +---------------------------------+-------------+------------+------------+ | Non-recurring items related to | 0.0 | 40.9 | (9.6) | | Fugro| | | | +---------------------------------+-------------+------------+------------+ | Corporate and eliminations | (37.2) | (93.6) | (88.2) | +---------------------------------+-------------+------------+------------+ |Industrial Capex (including R&D | 97.1 | 74.9 | 90.2 | | capex) | | | | +---------------------------------+-------------+------------+------------+ |Multi-client Cash Capex | 81.9 | 127.2 | 107.3 | +---------------------------------+-------------+------------+------------+

First Half 2013 Financial Results

Group Total Revenue was $1.902 billion up 18% compared to the first half 2012. It breaks down to 20% from the Equipment division, 47% from the Acquisition division and 33% from the GGR division.

Group EBITDAs was $637 million up 44%, a 33% margin. Before the non-recurring impact of the Fugro Geoscience deal, Group EBITDAs was $606 million.

+---------------------------------------+----------------+----------------+ | | | | | |First Half 2012 |First Half 2013 | | | | | | | | | | | | | |In million $ | | | +---------------------------------------+----------------+----------------+ |Group EBITDAs | 441 | 637 | +---------------------------------------+----------------+----------------+ | Margin | 27% | 33% | +---------------------------------------+----------------+----------------+ | Sercel | 229 | 164 | +---------------------------------------+----------------+----------------+ | Acquisition | 85 | 242 | +---------------------------------------+----------------+----------------+ | GGR | 230 | 381 | +---------------------------------------+----------------+----------------+ | Eliminations | (81) | (157) | +---------------------------------------+----------------+----------------+ | Corporate Costs | (23) | (24) | +---------------------------------------+----------------+----------------+ | Non-recurring items linked to Fugro | 0 | 31 | +---------------------------------------+----------------+----------------+

Group EBIT was $279 million up 82%, a margin of 15%. Before the non-recurring impact of the Fugro Geoscience deal, Group EBIT was $256 million, a margin of 13%.

+---------------------------------------+----------------+----------------+ | | First Half 2012| First Half 2013| | | | | | In million $ | | | +---------------------------------------+----------------+----------------+ | Group EBIT | 153 | 279 | +---------------------------------------+----------------+----------------+ | Margin | 9% | 15% | +---------------------------------------+----------------+----------------+ | Sercel | 207 | 140 | +---------------------------------------+----------------+----------------+ | Acquisition | (34) | 75 | +---------------------------------------+----------------+----------------+ | GGR | 67 | 177 | +---------------------------------------+----------------+----------------+ | Eliminations | (61) | (107) | +---------------------------------------+----------------+----------------+ | Corporate Costs | (27) | (29) | +---------------------------------------+----------------+----------------+ | Non-recurring items linked to Fugro| 0 | 24 | +---------------------------------------+----------------+----------------+

Financial Charges were $98 million:

* The cost of Debt was $93 million, while the total amount of interest paid during the quarter was $66 million * Other financial items were negative at $5 million including $3 million related to additional bridge-loan commitment fees

Taxes were $67 million including $5 million due to the unfavorable impact of deferred tax on currency translation.

Group Net Income was $115 million.

After minority interests, Net Income attributable to the owners of CGG was $112 million/EUR85 million. EPS was positive at $0.63/EUR0.48.

Cash Flow

Cash Flow from operations was $267 million.

Global Capex was $400 million in the first half of the year.

* Industrial capex was $141 million, 47% of the total amount of the year * Research & Development capex was $24 million * Multi-client cash capex was $235 million, 52% of the total amount of the Year

+--------------------+------------+------------+ | | | | | | First Half | First Half | | | 2012 | 2013 | | | | | | In million $ | | | +--------------------+------------+------------+ | Capex | 382 | 400 | +--------------------+------------+------------+ | Industrial | 210 | 141 | +--------------------+------------+------------+ | R&D | 14 | 24 | +--------------------+------------+------------+ | Multi-client Cash | 157 | 235 | | | | | | Marine MC | 92 | 207 | | | | | | Other MC | 66 | 28 | +--------------------+------------+------------+

Free Cash Flow

After $66 million of interest paid during the first half of the year and Capex, free cash flow was negative at $(191) million.

Balance Sheet Net Debt to Equity Ratio:

Group gross debt was $2.529 billion at the end of June 2013.

Available cash was $359 million. Group net debt was $2.170 billion at the end of June 2013.

Net debt to equity ratio, at the end of June 2013, was 47%.

2013 First Half Comparisons with 2012 First Half

+-----------------------------------------+------------+------------+ | | | | | Consolidated Income Statements | First Half | First Half | | | | | | | 2012 | 2013 | | | | | | | | | | In million $ | | | +-----------------------------------------+------------+------------+ | Exchange rate euro/dollar | 1.308 | 1.312 | +-----------------------------------------+------------+------------+ | Operating Revenue | 1617.6 | 1902.4 | +-----------------------------------------+------------+------------+ | Sercel | 633.0 | 505.0 | +-----------------------------------------+------------+------------+ | Acquisition | 849.3 | 1199.4 | +-----------------------------------------+------------+------------+ | GGR | 418.8 | 626.5 | +-----------------------------------------+------------+------------+ | Elimination | (283.5) | (428.5) | +-----------------------------------------+------------+------------+ | Gross Margin | 316.4 | 434.0 | +-----------------------------------------+------------+------------+ | Operating Income | 139.2 | 273.3 | +-----------------------------------------+------------+------------+ | Equity from Investments | 13.7 | 6.1 | +-----------------------------------------+------------+------------+ | EBIT | 152.9 | 279.4 | +-----------------------------------------+------------+------------+ | Sercel | 207.2 | 140.1 | +-----------------------------------------+------------+------------+ | Acquisition | (34.0) | 75.2 | +-----------------------------------------+------------+------------+ | GGR | 67.2 | 176.6 | +-----------------------------------------+------------+------------+ | Non-recurring items related to Fugro | 0.0 | 23.8 | +-----------------------------------------+------------+------------+ | Corporate and eliminations | (87.5) | (136.3) | +-----------------------------------------+------------+------------+ | Net Financial Costs | (75.9) | (98.0) | +-----------------------------------------+------------+------------+ | Income Taxes | (46.2) | (61.6) | +-----------------------------------------+------------+------------+ | Deferred Tax on Currency Translation | 0.0 | (5.0) | +-----------------------------------------+------------+------------+ | Net Income | 30.8 | 114.8 | +-----------------------------------------+------------+------------+ | Earnings per share in $ | 0.13 | 0.63 | +-----------------------------------------+------------+------------+ | Earnings per share in EUR | 0.10 | 0.48 | +-----------------------------------------+------------+------------+ | EBITDAs | 440.8 | 637.0 | +-----------------------------------------+------------+------------+ | Sercel | 229.4 | 164.3 | +-----------------------------------------+------------+------------+ | Acquisition | 84.7 | 241.8 | +-----------------------------------------+------------+------------+ | GGR | 230.5 | 381.4 | +-----------------------------------------+------------+------------+ | Non-recurring items related to Fugro | 0.0 | 31.4 | +-----------------------------------------+------------+------------+ | Corporate and eliminations | (103.8) | (181.9) | +-----------------------------------------+------------+------------+ | Industrial Capex (including R&D capex) | 224.2 | 165.1 | +-----------------------------------------+------------+------------+ | Multi-client Cash Capex | 157.4 | 234.5 | +-----------------------------------------+------------+------------+

Other Information

* An English language conference call is scheduled today August 1(st), 2013 at 10:00 AM (Paris time) - 9:00 AM (London time).

To take part in the English language conference, simply dial five to ten minutes prior to the scheduled start time.

- US Toll-Free 1-877-317-6789 - International call-in 1-412-317-6789 - Replay 1-877-344-7529 & 1-412-317-0088 Conference number: 10024658

You will be connected to the conference: "CGG Q2 2013 results".

* Copies of the presentation are posted on the Company website www.cgg.com and can be downloaded.

* The conference call will be broadcast live on the CGG website www.cgg.com and a replay will be available for two weeks thereafter.

About CGG:

CGG (www.cgg.com) is a fully integrated Geosciences company providing leading geological, geophysical and reservoir capabilities to its broad base of customers primarily from the global oil and gas industry. Through its three complementary business divisions of Equipment, Acquisition and Geology, Geophysics & Reservoir (GGR), CGG brings value across all aspects of natural resource exploration and exploitation. CGG employs 9,800 people around the world, all with a Passion for Geosciences and working together to deliver the best solutions to its customers. CGG is listed on the Euronext Paris SA (ISIN:0000120164) and the New York Stock Exchange (in the form of American Depositary Shares. NYSE: CGG).

The information included herein contains certain forward-looking statements within the meaning of Section 27A of the securities act of 1933 and section 21E of the Securities Exchange Act of 1934. These forward-looking statements reflect numerous assumptions and involve a number of risks and uncertainties as disclosed by the Company from time to time in its filings with the Securities and Exchange Commission. Actual results may vary materially.

CGG CONSOLIDATED FINANCIAL STATEMENTS Second Quarter 2013 CONSOLIDATED BALANCE SHEET ------------------------------ June December 30, 2013 31, 2012 (unaudited) (restated) ------------------------------- Amounts in millions of U.S.$, unless indicated ASSETS Cash and cash equivalents 358.8 1,520.2 Trade accounts and notes receivable, net 1,062.5 888.7 Inventories and work-in-progress, net 445.0 419.2 Income tax assets 131.5 111.7 Other current assets, net 178.7 139.6 Assets held for sale, net 10.6 393.9 Total current assets 2,187.1 3,473.3 Deferred tax assets 175.5 171.4 Investments and other financial assets, net 56.5 53.7 Investments in companies under equity method 332.8 124.5 Property, plant and equipment, net 1,688.2 1,159.5 Intangible assets, net 1,208.0 934.9 Goodwill, net 3,111.8 2,415.5 Total non-current assets 6,572.8 4,859.5 TOTAL ASSETS 8,759.9 8,332.8 LIABILITIES AND EQUITY Bank overdrafts 8.4 4.2 Current portion of financial debt 164.2 47.8 Trade accounts and notes payable 478.3 505.5 Accrued payroll costs 218.5 209.9 Income taxes liability payable 101.7 97.0 Advance billings to customers 40.8 36.0 Provisions - current portion 44.3 21.0 Other current liabilities 335.9 300.2 Total current liabilities 1,392.1 1,221.6 Deferred tax liabilities 137.5 106.0 Provisions - non-current portion 137.1 123.5 Financial debt 2,356.5 2,253.2 Other non-current liabilities 39.3 46.6 Total non-current liabilities 2,670.4 2,529.3 Common stock 301,836,238 shares authorized and 176,860,885 shares with a EUR0.40 nominal value issued and outstanding at June 30, 2013 and 176,392,225 at December 31, 2012 92.7 92.4 Additional paid-in capital 3,180.0 3,179.1 Retained earnings 1,274.5 1,190.6 Other reserves (25.2) (27.8) Treasury shares (20.6) (20.6) Net income (loss) for the period attributable to the owners of CGG 111.6 75.2 Cumulative income and expense recognized directly in equity (7.7) (7.6) Cumulative translation adjustment (3.5) 1.9 Equity attributable to owners of CGG 4,601.8 4,483.2 Non-controlling interests 95.6 98.7 Total equity 4,697.4 4,581.9 TOTAL LIABILITIES AND EQUITY 8,759.9 8,332.8

* Starting January 1, 2013, CGG applies IAS19 revised - Employee benefits. As the application of this new standard is a change of accounting policy, all comparative financial information has been restated to present comparative amounts for each period presented as if the new accounting policy had always been applied. The adjustments resulting from the immediate recognition of past services costs were as follows as of December 31, 2012: Increase in employee benefit liability of U.S.$15.9 million, decrease in opening retained earnings of U.S.$(10.0) million and decrease in deferred tax liability of U.S.$(5.9) million.

UNAUDITED INTERIM CONSOLIDATED STATEMENT OF OPERATIONS Six months ended June 30, ------------------------------------ 2013 2012 (restated) (4) ------------------------------------ Amounts in millions of U.S.$, except per share data or unless indicated Operating revenues 1,902.4 1,617.6 Other income from ordinary activities 1.1 2.1 Total income from ordinary activities 1,903.5 1,619.7 Cost of operations (1,469.5) (1,303.3) Gross profit 434.0 316.4 Research and development expenses, net (51.0) (44.5) Marketing and selling expenses (62.9) (46.6) General and administrative expenses (105.2) (92.1) Other revenues (expenses), net 58.4 6.0 Operating income 273.3 139.2 Expenses related to financial debt (94.1) (78.7) Income provided by cash and cash equivalents 1.0 1.4 Cost of financial debt, net (93.1) (77.3) Other financial income (loss) (4.9) 1.4 Income (loss) of consolidated companies before income taxes 175.3 63.3 Deferred taxes on currency translation (5.0) - Other income taxes (61.6) (46.2) Total income taxes (66.6) (46.2) Net income (loss) from consolidated companies 108.7 17.1 Share of income (loss) in companies accounted for under equity method 6.1 13.7 Net income (loss) 114.8 30.8 Attributable to : Owners of CGG $ 111.6 21.2 Owners of CGG((1)) EUR 85.1 16.2 Non-controlling interests $ 3.2 9.6 Weighted average number of shares outstanding 176,750,616 158,703,135 Dilutive potential shares from stock- options 588,127 658,216 Dilutive potential shares from performance share plan 611,140 678,850 Dilutive potential shares from convertible bonds (2) (2) Dilutive weighted average number of shares outstanding adjusted when dilutive 177,949,883 160,040,201 Net income (loss) per share Basic $ 0.63 0.13 ((3)) Basic ((1)) EUR 0.48 0.10 ((3)) Diluted $ 0.63 0.13 ((3)) Diluted ((1)) EUR 0.48 0.10 ((3)) 1. Converted at the average exchange rate of U.S.$1.312 and U.S.$1.308 per EUR for the periods ended June 30, 2013 and 2012, respectively. 2. Convertible bonds had an accretive effect; as a consequence, Potential shares linked to those instruments were not taken into account in the dilutive weighted average number of shares or in the calculation of diluted income per share. 3. As a result of the capital increase of CGG in 2012 via an offering of preferential subscription rights to existing shareholders, the calculation of basic and diluted earnings per shares for 2012 has been adjusted retrospectively. Number of ordinary shares outstanding has been adjusted to reflect the proportionate change in the number of shares. 4. Restatement related to IAS19 revised. UNAUDITED INTERIM CONSOLIDATED STATEMENT OF OPERATIONS Three months ended June 30, -------------------------------------- 2013 2012 (restated) ((4)) -------------------------------------- Amounts in millions of U.S.$, except per share data or unless indicated Operating revenues 1,031.7 831.0 Other income from ordinary activities 0.5 0.9 Total income from ordinary activities 1,032.2 831.9 Cost of operations (794.3) (654.1) Gross profit 237.9 177.8 Research and development expenses, net (24.9) (22.7) Marketing and selling expenses (34.5) (24.6) General and administrative expenses (54.2) (45.0) Other revenues (expenses), net (2.8) (0.1) Operating income 121.5 85.4 Expenses related to financial debt (47.2) (39.2) Income provided by cash and cash equivalents 0.4 0.5 Cost of financial debt, net (46.8) (38.7) Other financial income (loss) 0.1 4.7 Income (loss) of consolidated companies before income taxes 74.8 51.4 Deferred taxes on currency translation 1.7 (2.8) Other income taxes (36.3) (24.4) Total income taxes (34.6) (27.2) Net income (loss) from consolidated companies 40.2 24.2 Share of income (loss) in companies accounted for under equity method (4.5) 10.1 Net income (loss) 35.7 34.3 Attributable to : Owners of CGG $ 34.9 29.9 Owners of CGG((1)) EUR 26.6 22.8 Non-controlling interests $ 0.8 4.4 Weighted average number of shares outstanding 176,719,125 158,738,591 Dilutive potential shares from stock- options 507,561 578,040 Dilutive potential shares from performance share plan 611,140 678,850 Dilutive potential shares from convertible bonds (2) (2) Dilutive weighted average number of shares outstanding adjusted when dilutive 177,837,826 159,995,481 Net income (loss) per share Basic $ 0.20 0.19 (3) Basic ((1)) EUR 0.15 0.14 (3) Diluted $ 0.20 0.19 (3) Diluted ((1)) EUR 0.15 0.14 (3) 1. Corresponding to the half-year amount in euros less the first quarter amount in euros. 2. Convertible bonds had an accretive effect; as a consequence, potential shares linked to those instruments were not taken into account in the dilutive weighted average number of shares or in the calculation of diluted income per share. 3. As a result of the capital increase of CGG in 2012 via an offering of preferential subscription rights to existing shareholders, the calculation of basic and diluted earnings per shares for 2012 has been adjusted retrospectively. Number of ordinary shares outstanding has been adjusted to reflect the proportionate change in the number of shares. 4. Restatement related to IAS19 revised. Unaudited analysis by operating segment

We previously reported our results on the basis of two operating segments: Geophysical Services and Geophysical Equipment. As a result of the acquisition of the Fugro's Geoscience Division, we changed our organization, as well as the way management measures our performance. Since February 1, 2013, we are organized in three Divisions with the following operating segments:

* Acquisition segment, which comprises:

- Marine acquisition: seismic data acquisition offshore undertaken by us on behalf of a specific client;

- Land and Airborne: other seismic data acquisition undertaken by us on behalf of a specific client;

* Geology, Geophysics & Reservoir ("GGR") segment which comprises:

- Multi-clients, basin data and Data Management: seismic and geological data undertaken by us and licensed to a number of clients on a non-exclusive basis and data management services;

- Imaging and Reservoir: processing and imaging of geophysical data and reservoir characterization.

* Equipment segment, which we conduct through Sercel, comprises our manufacturing and sales activities for seismic equipment used for data acquisition, both on land and marine.

Financial information by operating segment is reported in accordance with our internal reporting system and shows internal segment information that is used by the chief operating decision maker to manage and measure the performance.

We also changed our main performance indicator from operating income to earnings before interest and tax ("EBIT"). We define EBIT as operating income plus our share of income in companies accounted for under the equity method. EBIT is used by management as performance indicator because it captures the contribution to our results of the significant businesses that we manage through our joint-ventures.

Prior period segment disclosure has been restated to reflect the new segments.

---------------------------------------------------- 2013 --------------------------------------------------- In millions of U.S.$, except for Acqui- Equip- Eliminations Consolidated assets and sition GGR ment and Total capital Other employed in billions of U.S.$ --------------------------------------------------- Revenues from unaffiliated 898.0 626.5 377.9 - 1,902.4 customers Inter- 301.4 - 127.1 (428.5) - segment revenues Operating 1,199.4 626.5 505.0 (428.5) 1,902.4 revenues Depreciation and amortization (excluding multi-client surveys) (174.6) (30.1) (23.0) - (227.7) Depreciation and amortization of multi- client surveys - (174.0) - - (174.0) Share of income in companies accounted for under equity method (1) 5.1 1.0 - - 6.1 Earnings before 176.6 interest and tax (2) 75.2 140.1 (112.5) 279.4 Capital expenditures (excluding multi-client surveys) (3) 122.0 23.5 19.5 (7.0) 158.0 Investments in multi- client surveys, net cash - 234.5 - - 234.5 Capital employed (4) 3.3 2.8 0.8 - 6.9 Total assets (4) 3.8 3.0 1.0 0.6 8.4 --------------------------------------------------- ------------------------------------------------- 2012 (restated) ------------------------------------------------- In millions of U.S.$, except for Acqui- Equip- Eliminations Consolidated assets and sition GGR ment and Total capital employed in billions of U.S.$ ------------------------------------------------- Revenues from 418.8 unaffiliate 711.7 487.1 - 1,617.6 customers Inter- 137.6 - 145.9 (283.5) - segment revenues Operating 849.3 418.8 633.0 (283.5) 1,617.6 revenues Depreciatio and amortizatio (19.4) (excluding multi-clien surveys) (129.7) (20.9) - (170.0) Depreciatio and amortizatio of multi- client surveys - (144.9) - - (144.9) Share of income in companies 2.6 accounted for under equity method (1) 11.1 - - 13.7 Earnings before 67.2 interest an tax (2) (34.0) 207.2 (87.5) 152.9 Capital expenditure (excluding 15.5 multi-clien surveys) (3) 197.0 11.7 (11.0) 213.2 Investments in multi- client surveys, ne cash - 157.4 - - 157.4 Capital employed (4) 3.1 1.7 0.7 - 5.5 Total asset (4) 3.5 1.9 0.9 0.5 6.8 ------------------------------------------------- 1. Operational results of companies accounted for under equity method were U.S.$(6.8) million and U.S.$13.5 million for the three months ended June 30, 2013 and 2012, respectively. 2. For the three months ended June 30, 2013, "eliminations and other" include general corporate expenses of U.S.$(15.7) million, U.S.$(51.4) million of intra-group margin and U.S.$(10.8) million of non recurring items related to the acquisition of Fugro's Geosciences Division: (i) restructuring costs of U.S.$6.2 million related to the acquired vessels from Fugro; and (iii) acquisition costs of U.S.$4.6 million. For the three months ended June 30, 2012, general corporate expenses amounted to U.S.$(13.1) million. 3. Capital expenditures include capitalized development costs of U.S.$13.7 million and U.S.$6.9 million for the three months ended June 30, 2013 and 2012, respectively. Three months ended June 30, ---------------------------------------------------- 2013 --------------------------------------------------- In millions of U.S.$, except for Acqui- Equip- Eliminations Consolidated assets and sition GGR ment and Total capital Other employed in billions of U.S.$ --------------------------------------------------- Revenues from unaffiliated customers 476.7 366.9 188.1 - 1,031.7 Inter-segment revenues 128.7 - 66.2 (194.9) - Operating revenues 605.4 366.9 254.3 (194.9) 1,031.7 Depreciation and amortization (excluding multi- client surveys) (86.2) (18.1) (11.6) - (115.9) Depreciation and amortization of multi-client surveys - (102.4) - - (102.4) Share of income in companies accounted for under equity method (1) (4.0) (0.5) - - (4.5) Earnings before interest and tax (2) 28.0 95.9 71.0 (77.9) 117.0 Capital expenditures (excluding multi-client surveys) (3) 65.0 12.3 12.8 (8.2) 81.9 Investments in multi-client surveys, net cash - 107.3 - - 107.3 ------------------------------------------------- ------------------------------------------------- 2012 (restated) ------------------------------------------------- In millions of U.S.$, except for Acqui- Equip- Eliminations Consolidated assets and sition GGR ment and Total capital employed in billions of U.S.$ ------------------------------------------------- Revenues from unaffiliated customers 399.9 199.5 231.6 - 831.0 Inter-segment revenues 66.6 - 53.6 (120.2) - Operating revenues 466.5 199.5 285.2 (120.2) 831.0 Depreciation and amortization (excluding multi-client surveys) (65.4) (10.2) (10.4) - (86.0) Depreciation and amortization of multi-client surveys - (63.7) - - (63.7) Share of income in companies accounted for under equity method (1) 10.2 (0.1) - - 10.1 Earnings before interest and tax (2) 5.3 29.9 91.7 (31.4) 95.5 Capital expenditures (excluding multi-client surveys) (3) 82.3 8.2 6.5 (1.1) 95.9 Investments in multi-client surveys, net cash - 81.9 - - 81.9 ------------------------------------------------- 1. Operational results of companies accounted for under equity method were U.S.$(6.8) million and U.S.$13.5 million for the three months ended June 30, 2013 and 2012, respectively. 2. For the three months ended June 30, 2013, "eliminations and other" include general corporate expenses of U.S.$(15.7) million, U.S.$(51.4) million of intra-group margin and U.S.$(10.8) million of non recurring items related to the acquisition of Fugro's Geosciences Division: (i) restructuring costs of U.S.$6.2 million related to the acquired vessels from Fugro; and (iii) acquisition costs of U.S.$4.6 million. For the three months ended June 30, 2012, general corporate expenses amounted to U.S.$(13.1) million. 3. Capital expenditures include capitalized development costs of U.S.$13.7 million and U.S.$6.9 million for the three months ended June 30, 2013 and 2012, respectively. UNAUDITED INTERIM CONSOLIDATED STATEMENT OF CASH FLOWS Six months ended June 30, ---------------------------------- 2013 2012 (restated) ((1)) ---------------------------------- Amounts in millions of U.S.$ OPERATING Net income (loss) 114.8 30.8 Depreciation and amortization 227.7 170.0 Multi-client surveys depreciation and amortization 174.0 144.9 Depreciation and amortization capitalized to multi-client surveys (47.1) (22.4) Variance on provisions 17.1 (11.6) Stock based compensation expenses 9.1 9.1 Net gain (loss) on disposal of fixed assets (97.5) (7.9) Equity income (loss) of investees (6.1) (13.7) Dividends received from affiliates - 22.1 Other non-cash items 3.7 0.8 Net cash including net cost of financial debt and income tax 395.7 322.1 Less net cost of financial debt 93.1 77.3 Less income tax expense 66.6 46.2 Net cash excluding net cost of financial debt and income tax 555.4 445.6 Income tax paid (58.7) (84.4) Net cash before changes in working capital 496.7 361.2 - change in trade accounts and notes receivable (31.9) (39.7) - change in inventories and work-in-progress (7.4) (27.9) - change in other current assets (1.6) (4.8) - change in trade accounts and notes payable (146.8) 52.4 - change in other current liabilities (44.0) (51.4) Impact of changes in exchange rate on financial items 2.1 6.3 Net cash provided by operating activities 267.1 296.1 INVESTING Capital expenditures (including variation of fixed assets suppliers, excluding multi- client surveys) (158.0) (213.2) Investment in multi-client surveys, net cash (234.5) (157.4) Proceeds from disposals of tangible and intangible assets 4.6 2.5 Total net proceeds from financial assets 33.7 11.8 Acquisition of investments, net of cash and cash equivalents acquired (939.6) (52.5) Impact of changes in consolidation scope - - Variation in loans granted - 0.6 Variation in subsidies for capital expenditures - (1.2) Variation in other non-current financial assets 0.1 (0.7) Net cash used in investing activities (1,293.7) (410.1) FINANCING Repayment of long-term debts (184.2) (47.3) Total issuance of long-term debts 111.8 39.2 Lease repayments (9.3) (17.1) Change in short-term loans 3.5 (1.9) Financial expenses paid (65.8) (61.7) Net proceeds from capital increase - from shareholders 1.2 0.6 - from non-controlling interests of integrated companies - - Dividends paid and share capital reimbursements - to shareholders - - - to non-controlling interests of integrated companies (7.5) (5.6) Acquisition/disposal from treasury shares - - Net cash provided by (used in) financing activities (150.3) (93.8) Effects of exchange rates on cash 15.5 (4.8) Net increase (decrease) in cash and cash equivalents (1,161.4) (212.6) Cash and cash equivalents at beginning of year 1,520.2 531.4 Cash and cash equivalents at end of period 358.8 318.8 1. Restatement related to IAS19 revised.

CGG - 2nd Quarter 2013 Results: http://hugin.info/142000/R/1720305/572677.pdf

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