| Supplemental Guarantor Information | 
20. Supplemental Guarantor Information  Our payment obligations under the Company’s outstanding 8.50% Senior Notes and the Credit Agreement are fully and unconditionally guaranteed by certain of our wholly-owned subsidiaries, including W&T Energy VI, LLC and W&T Energy VII, LLC (together, the “Guarantor Subsidiaries”).  W&T Energy VII, LLC does not currently have any active operations or contain any assets.  Guarantees of the 8.50% Senior Notes will be released under certain circumstances, including:  
| (1) | in connection with any sale or other disposition of all or substantially all of the assets of a Guarantor Subsidiary (including by way of merger or consolidation) to a person that is not (either before or after giving effect to such transaction) the Company or a Restricted Subsidiary (as such term is defined in the indenture governing the 8.50% Senior Notes) of the Company, if the sale or other disposition does not violate the “Asset Sales” provisions of the indenture;  | 
| (2) | in connection with any sale or other disposition of the capital stock of such Guarantor Subsidiary to a person that is not (either before or after giving effect to such transaction) the Company or a Restricted Subsidiary of the Company, if the sale or other disposition does not violate the “Asset Sales” provisions of the indenture and the Guarantor Subsidiary ceases to be a subsidiary of the Company as a result of such sales or disposition;  | 
| (3) | if such Guarantor Subsidiary is a Restricted Subsidiary and the Company designates such Guarantor Subsidiary as an Unrestricted Subsidiary in accordance with the applicable provisions of the indenture;  | 
| (4) | upon Legal Defeasance or Covenant Defeasance (as such terms are defined in the indenture) or upon satisfaction and discharge of the indenture;  | 
| (5) | upon the liquidation or dissolution of such Guarantor Subsidiary, provided no event of default has occurred and is continuing; or  | 
| (6) | at such time as such Guarantor Subsidiary is no longer required to be a Guarantor Subsidiary of the 8.50% Senior Notes as described in the indenture, provided no event of default has occurred and is continuing.  | 
      The following unaudited condensed consolidating financial information presents the financial condition, results of operations and cash flows of W&T Offshore, Inc. (the “Parent Company”) and the Guarantor Subsidiaries, together with consolidating adjustments necessary to present the Company’s results on a consolidated basis.      Condensed Consolidating Balance Sheet as of December 31, 2013    
|   |    | ParentCompany
 |   |   | GuarantorSubsidiaries
 |   |    | Eliminations |   |   | ConsolidatedW&T
 Offshore, Inc.
 |   |  
|   |    | (In thousands) |   |  
| Assets |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  
| Current assets: |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  
| Cash and cash equivalents |   | $ | 15,800 |   |   | $ | — |   |   | $ | — |   |   | $ | 15,800 |   |  
| Receivables: |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  
| Oil and natural gas sales |   |   | 75,486 |   |   |   | 21,266 |   |   |   | — |   |   |   | 96,752 |   |  
| Joint interest and other |   |   | 27,984 |   |   |   | — |   |   |   | — |   |   |   | 27,984 |   |  
| Income taxes |   |   | 124,393 |   |   |   | — |   |   |   | (121,273 | ) |   |   | 3,120 |   |  
| Total receivables |   |   | 227,863 |   |   |   | 21,266 |   |   |   | (121,273 | ) |   |   | 127,856 |   |  
| Prepaid expenses and other assets |   |   | 23,674 |   |   |   | 6,272 |   |   |   | — |   |   |   | 29,946 |   |  
| Total current assets |   |   | 267,337 |   |   |   | 27,538 |   |   |   | (121,273 | ) |   |   | 173,602 |   |  
| Property and equipment—at cost: |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  
| Oil and natural gas properties and equipment |   |   | 6,770,396 |   |   |   | 568,701 |   |   |   | — |   |   |   | 7,339,097 |   |  
| Furniture, fixtures and other |   |   | 21,431 |   |   |   | — |   |   |   | — |   |   |   | 21,431 |   |  
| Total property and equipment |   |   | 6,791,827 |   |   |   | 568,701 |   |   |   | — |   |   |   | 7,360,528 |   |  
| Less accumulated depreciation, depletion and amortization |   |   | 4,784,932 |   |   |   | 299,772 |   |   |   | — |   |   |   | 5,084,704 |   |  
| Net property and equipment |   |   | 2,006,895 |   |   |   | 268,929 |   |   |   | — |   |   |   | 2,275,824 |   |  
| Restricted deposits for asset retirement obligations |   |   | 37,421 |   |   |   | — |   |   |   | — |   |   |   | 37,421 |   |  
| Other assets |   |   | 574,280 |   |   |   | 427,619 |   |   |   | (981,444 | ) |   |   | 20,455 |   |  
| Total assets |   | $ | 2,885,933 |   |   | $ | 724,086 |   |   | $ | (1,102,717 | ) |   | $ | 2,507,302 |   |  
|   Liabilities and Shareholders’ Equity |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  
| Current liabilities: |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  
| Accounts payable |   | $ | 144,492 |   |   | $ | 720 |   |   | $ | — |   |   | $ | 145,212 |   |  
| Undistributed oil and natural gas proceeds |   |   | 41,735 |   |   |   | 372 |   |   |   | — |   |   |   | 42,107 |   |  
| Asset retirement obligations |   |   | 75,977 |   |   |   | 1,808 |   |   |   | — |   |   |   | 77,785 |   |  
| Accrued liabilities |   |   | 28,000 |   |   |   | 121,273 |   |   |   | (121,273 | ) |   |   | 28,000 |   |  
| Total current liabilities |   |   | 290,204 |   |   |   | 124,173 |   |   |   | (121,273 | ) |   |   | 293,104 |   |  
| Long-term debt, less current maturities |   |   | 1,205,421 |   |   |   | — |   |   |   | — |   |   |   | 1,205,421 |   |  
| Asset retirement obligations, less current portion |   |   | 238,270 |   |   |   | 38,367 |   |   |   | — |   |   |   | 276,637 |   |  
| Deferred income taxes |   |   | 170,419 |   |   |   | 7,723 |   |   |   | — |   |   |   | 178,142 |   |  
| Other liabilities |   |   | 441,009 |   |   |   | — |   |   |   | (427,621 | ) |   |   | 13,388 |   |  
| Commitments and contingencies |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  
| Shareholders’ equity: |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  
| Common stock |   |   | 1 |   |   |   | — |   |   |   | — |   |   |   | 1 |   |  
| Additional paid-in capital |   |   | 403,564 |   |   |   | 317,776 |   |   |   | (317,776 | ) |   |   | 403,564 |   |  
| Retained earnings |   |   | 161,212 |   |   |   | 236,047 |   |   |   | (236,047 | ) |   |   | 161,212 |   |  
| Treasury stock, at cost |   |   | (24,167 | ) |   |   | — |   |   |   | — |   |   |   | (24,167 | ) |  
| Total shareholders’ equity |   |   | 540,610 |   |   |   | 553,823 |   |   |   | (553,823 | ) |   |   | 540,610 |   |  
| Total liabilities and shareholders’ equity |   | $ | 2,885,933 |   |   | $ | 724,086 |   |   | $ | (1,102,717 | ) |   | $ | 2,507,302 |   |        Condensed Consolidating Balance Sheet as of December 31, 2012    
|   |    | ParentCompany
 |   |   | GuarantorSubsidiaries
 |   |    | Eliminations |   |   | ConsolidatedW&T
 Offshore, Inc.
 |   |  
|   |    | (In thousands) |   |  
| Assets |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  
| Current assets: |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  
| Cash and cash equivalents |   | $ | 12,245 |   |   | $ | — |   |   | $ | — |   |   | $ | 12,245 |   |  
| Receivables: |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  
| Oil and natural gas sales |   |   | 80,729 |   |   |   | 17,004 |   |   |   | — |   |   |   | 97,733 |   |  
| Joint interest and other |   |   | 56,439 |   |   |   | — |   |   |   | — |   |   |   | 56,439 |   |  
| Income taxes |   |   | 163,750 |   |   |   | — |   |   |   | (115,866 | ) |   |   | 47,884 |   |  
| Total receivables |   |   | 300,918 |   |   |   | 17,004 |   |   |   | (115,866 | ) |   |   | 202,056 |   |  
| Prepaid expenses and other assets |   |   | 25,822 |   |   |   | — |   |   |   | — |   |   |   | 25,822 |   |  
| Total current assets |   |   | 338,985 |   |   |   | 17,004 |   |   |   | (115,866 | ) |   |   | 240,123 |   |  
| Property and equipment—at cost: |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  
| Oil and natural gas properties and equipment |   |   | 6,356,529 |   |   |   | 337,981 |   |   |   | — |   |   |   | 6,694,510 |   |  
| Furniture, fixtures and other |   |   | 21,786 |   |   |   | — |   |   |   | — |   |   |   | 21,786 |   |  
| Total property and equipment |   |   | 6,378,315 |   |   |   | 337,981 |   |   |   | — |   |   |   | 6,716,296 |   |  
| Less accumulated depreciation, depletion and amortization |   |   | 4,461,886 |   |   |   | 193,955 |   |   |   | — |   |   |   | 4,655,841 |   |  
| Net property and equipment |   |   | 1,916,429 |   |   |   | 144,026 |   |   |   | — |   |   |   | 2,060,455 |   |  
| Restricted deposits for asset retirement obligations |   |   | 28,466 |   |   |   | — |   |   |   | — |   |   |   | 28,466 |   |  
| Other assets |   |   | 442,540 |   |   |   | 407,008 |   |   |   | (829,605 | ) |   |   | 19,943 |   |  
| Total assets |   | $ | 2,726,420 |   |   | $ | 568,038 |   |   | $ | (945,471 | ) |   | $ | 2,348,987 |   |  
|   Liabilities and Shareholders’ Equity |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  
| Current liabilities: |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  
| Accounts payable |   | $ | 123,792 |   |   | $ | 93 |   |   | $ | — |   |   | $ | 123,885 |   |  
| Undistributed oil and natural gas proceeds |   |   | 36,791 |   |   |   | 282 |   |   |   | — |   |   |   | 37,073 |   |  
| Asset retirement obligations |   |   | 92,595 |   |   |   | — |   |   |   | 35 |   |   |   | 92,630 |   |  
| Accrued liabilities |   |   | 20,755 |   |   |   | 116,132 |   |   |   | (115,866 | ) |   |   | 21,021 |   |  
| Total current liabilities |   |   | 273,933 |   |   |   | 116,507 |   |   |   | (115,831 | ) |   |   | 274,609 |   |  
| Long-term debt |   |   | 1,087,611 |   |   |   | — |   |   |   | — |   |   |   | 1,087,611 |   |  
| Asset retirement obligations, less current portion |   |   | 262,524 |   |   |   | 28,934 |   |   |   | (35 | ) |   |   | 291,423 |   |  
| Deferred income taxes |   |   | 158,758 |   |   |   | — |   |   |   | (13,509 | ) |   |   | 145,249 |   |  
| Other liabilities |   |   | 402,407 |   |   |   | — |   |   |   | (393,499 | ) |   |   | 8,908 |   |  
| Commitments and contingencies |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  
| Shareholders’ equity: |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  
| Common stock |   |   | 1 |   |   |   | — |   |   |   | — |   |   |   | 1 |   |  
| Additional paid-in capital |   |   | 396,186 |   |   |   | 231,759 |   |   |   | (231,759 | ) |   |   | 396,186 |   |  
| Retained earnings |   |   | 169,167 |   |   |   | 190,838 |   |   |   | (190,838 | ) |   |   | 169,167 |   |  
| Treasury stock, at cost |   |   | (24,167 | ) |   |   | — |   |   |   | — |   |   |   | (24,167 | ) |  
| Total shareholders’ equity |   |   | 541,187 |   |   |   | 422,597 |   |   |   | (422,597 | ) |   |   | 541,187 |   |  
| Total liabilities and shareholders’ equity |   | $ | 2,726,420 |   |   | $ | 568,038 |   |   | $ | (945,471 | ) |   | $ | 2,348,987 |   |        Condensed Consolidating Statement of Income for the Twelve Months Ended December 31, 2013    
|   |    | ParentCompany
 |   |   | GuarantorSubsidiaries
 |   |    | Eliminations |   |   | ConsolidatedW&T
 Offshore, Inc.
 |   |  
|   |    | (In thousands)  |   |  
| Revenues |   | $ | 780,442 |   |   | $ | 203,646 |   |   | $ | — |   |   | $ | 984,088 |   |  
| Operating costs and expenses: |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  
| Lease operating expenses |   |   | 252,511 |   |   |   | 18,328 |   |   |   | — |   |   |   | 270,839 |   |  
| Production taxes |   |   | 7,135 |   |   |   | — |   |   |   | — |   |   |   | 7,135 |   |  
| Gathering and transportation |   |   | 13,747 |   |   |   | 3,763 |   |   |   | — |   |   |   | 17,510 |   |  
| Depreciation, depletion and amortization |   |   | 324,794 |   |   |   | 105,817 |   |   |   | — |   |   |   | 430,611 |   |  
| Asset retirement obligation accretion |   |   | 18,152 |   |   |   | 2,766 |   |   |   | — |   |   |   | 20,918 |   |  
| General and administrative expenses |   |   | 78,649 |   |   |   | 3,225 |   |   |   | — |   |   |   | 81,874 |   |  
| Derivative loss |   |   | 8,470 |   |   |   | — |   |   |   | — |   |   |   | 8,470 |   |  
| Total costs and expenses |   |   | 703,458 |   |   |   | 133,899 |   |   |   | — |   |   |   | 837,357 |   |  
| Operating income |   |   | 76,984 |   |   |   | 69,747 |   |   |   | — |   |   |   | 146,731 |   |  
| Earnings of affiliates |   |   | 45,209 |   |   |   | — |   |   |   | (45,209 | ) |   |   | — |   |  
| Interest expense: |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  
| Incurred |   |   | 85,531 |   |   |   | 108 |   |   |   | — |   |   |   | 85,639 |   |  
| Capitalized |   |   | (9,950 | ) |   |   | (108 | ) |   |   | — |   |   |   | (10,058 | ) |  
| Loss on extinguishment of debt |   |   | 128 |   |   |   | — |   |   |   | — |   |   |   | 128 |   |  
| Other income |   |   | 9,074 |   |   |   | — |   |   |   | — |   |   |   | 9,074 |   |  
| Income before income tax expense |   |   | 55,558 |   |   |   | 69,747 |   |   |   | (45,209 | ) |   |   | 80,096 |   |  
| Income tax expense |   |   | 4,236 |   |   |   | 24,538 |   |   |   | — |   |   |   | 28,774 |   |  
| Net income |   | $ | 51,322 |   |   | $ | 45,209 |   |   | $ | (45,209 | ) |   | $ | 51,322 |   |        Condensed Consolidating Statement of Income for the Twelve Months Ended December 31, 2012    
|   |    | ParentCompany
 |   |   | GuarantorSubsidiaries
 |   |    | Eliminations |   |   | ConsolidatedW&T
 Offshore, Inc.
 |   |  
|   |    | (In thousands)  |   |  
| Revenues |   | $ | 659,203 |   |   | $ | 215,288 |   |   | $ | — |   |   | $ | 874,491 |   |  
| Operating costs and expenses: |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  
| Lease operating expenses |   |   | 209,581 |   |   |   | 22,679 |   |   |   | — |   |   |   | 232,260 |   |  
| Production taxes |   |   | 5,840 |   |   |   | — |   |   |   | — |   |   |   | 5,840 |   |  
| Gathering and transportation |   |   | 11,703 |   |   |   | 3,175 |   |   |   | — |   |   |   | 14,878 |   |  
| Depreciation, depletion and amortization |   |   | 253,807 |   |   |   | 82,370 |   |   |   | — |   |   |   | 336,177 |   |  
| Asset retirement obligation accretion |   |   | 17,463 |   |   |   | 2,592 |   |   |   | — |   |   |   | 20,055 |   |  
| General and administrative expenses |   |   | 79,424 |   |   |   | 2,593 |   |   |   | — |   |   |   | 82,017 |   |  
| Derivative loss |   |   | 13,954 |   |   |   | — |   |   |   | — |   |   |   | 13,954 |   |  
| Total costs and expenses |   |   | 591,772 |   |   |   | 113,409 |   |   |   | — |   |   |   | 705,181 |   |  
| Operating income |   |   | 67,431 |   |   |   | 101,879 |   |   |   | — |   |   |   | 169,310 |   |  
| Earnings of affiliates |   |   | 66,195 |   |   |   | — |   |   |   | (66,195 | ) |   |   | — |   |  
| Interest expense: |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  
| Incurred |   |   | 63,268 |   |   |   | — |   |   |   | — |   |   |   | 63,268 |   |  
| Capitalized |   |   | (13,274 | ) |   |   | — |   |   |   | — |   |   |   | (13,274 | ) |  
| Other income |   |   | 215 |   |   |   | — |   |   |   | — |   |   |   | 215 |   |  
| Income before income tax expense |   |   | 83,847 |   |   |   | 101,879 |   |   |   | (66,195 | ) |   |   | 119,531 |   |  
| Income tax expense |   |   | 11,863 |   |   |   | 35,684 |   |   |   | — |   |   |   | 47,547 |   |  
| Net income |   | $ | 71,984 |   |   | $ | 66,195 |   |   | $ | (66,195 | ) |   | $ | 71,984 |   |        Condensed Consolidating Statement of Income for the Twelve Months Ended December 31, 2011    
|   |    | ParentCompany
 |   |   | GuarantorSubsidiaries
 |   |    | Eliminations |   |   | ConsolidatedW&T
 Offshore, Inc.
 |   |  
|   |    | (In thousands)  |   |  
| Revenues |   | $ | 697,899 |   |   | $ | 273,148 |   |   | $ | — |   |   | $ | 971,047 |   |  
| Operating costs and expenses: |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  
| Lease operating expenses |   |   | 182,165 |   |   |   | 37,041 |   |   |   | — |   |   |   | 219,206 |   |  
| Production taxes |   |   | 4,275 |   |   |   | — |   |   |   | — |   |   |   | 4,275 |   |  
| Gathering and transportation |   |   | 12,676 |   |   |   | 4,244 |   |   |   | — |   |   |   | 16,920 |   |  
| Depreciation, depletion and amortization |   |   | 214,740 |   |   |   | 84,275 |   |   |   | — |   |   |   | 299,015 |   |  
| Asset retirement obligation accretion |   |   | 26,947 |   |   |   | 2,824 |   |   |   | — |   |   |   | 29,771 |   |  
| General and administrative expenses |   |   | 71,714 |   |   |   | 2,582 |   |   |   | — |   |   |   | 74,296 |   |  
| Derivative gain |   |   | (1,896 | ) |   |   | — |   |   |   | — |   |   |   | (1,896 | ) |  
| Total costs and expenses |   |   | 510,621 |   |   |   | 130,966 |   |   |   | — |   |   |   | 641,587 |   |  
| Operating income |   |   | 187,278 |   |   |   | 142,182 |   |   |   | — |   |   |   | 329,460 |   |  
| Earnings of affiliates |   |   | 92,533 |   |   |   | — |   |   |   | (92,533 | ) |   |   | — |   |  
| Interest expense: |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  
| Incurred |   |   | 52,393 |   |   |   | — |   |   |   | — |   |   |   | 52,393 |   |  
| Capitalized |   |   | (9,877 | ) |   |   | — |   |   |   | — |   |   |   | (9,877 | ) |  
| Loss on extinguishment of debt |   |   | 22,694 |   |   |   | — |   |   |   | — |   |   |   | 22,694 |   |  
| Other income |   |   | 84 |   |   |   | — |   |   |   | — |   |   |   | 84 |   |  
| Income before income tax expense |   |   | 214,685 |   |   |   | 142,182 |   |   |   | (92,533 | ) |   |   | 264,334 |   |  
| Income tax expense |   |   | 41,868 |   |   |   | 49,649 |   |   |   | — |   |   |   | 91,517 |   |  
| Net income |   | $ | 172,817 |   |   | $ | 92,533 |   |   | $ | (92,533 | ) |   | $ | 172,817 |   |        Condensed Consolidating Statement of Cash Flows for the Twelve Months Ended December 31, 2013    
|   |    | ParentCompany
 |   |   | GuarantorSubsidiaries
 |   |   | Eliminations |   |   | ConsolidatedW&T
 Offshore, Inc.
 |   |  
|   |    | (In thousands) |   |  
| Operating activities: |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  
| Net income |   | $ | 51,322 |   |   | $ | 45,209 |   |   | $ | (45,209 | ) |   | $ | 51,322 |   |  
| Adjustments to reconcile net income to net cash provided by operating activities: |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  
| Depreciation, depletion, amortization and accretion |   |   | 342,946 |   |   |   | 108,583 |   |   |   | — |   |   |   | 451,529 |   |  
| Amortization of debt issuance costs and premium |   |   | 1,645 |   |   |   | — |   |   |   | — |   |   |   | 1,645 |   |  
| Loss on extinguishment of debt |   |   | 128 |   |   |   | — |   |   |   | — |   |   |   | 128 |   |  
| Share-based compensation |   |   | 11,525 |   |   |   | — |   |   |   | — |   |   |   | 11,525 |   |  
| Derivative loss |   |   | 8,470 |   |   |   | — |   |   |   | — |   |   |   | 8,470 |   |  
| Cash payments on derivative settlements (realized) |   |   | (8,589 | ) |   |   | — |   |   |   | — |   |   |   | (8,589 | ) |  
| Deferred income taxes |   |   | 11,522 |   |   |   | 19,398 |   |   |   | — |   |   |   | 30,920 |   |  
| Earnings of affiliates |   |   | (45,209 | ) |   |   | — |   |   |   | 45,209 |   |   |   | — |   |  
| Changes in operating assets and liabilities: |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  
| Oil and natural gas receivables |   |   | 5,242 |   |   |   | (4,262 | ) |   |   | — |   |   |   | 980 |   |  
| Joint interest and other receivables |   |   | 28,566 |   |   |   | — |   |   |   | — |   |   |   | 28,566 |   |  
| Insurance proceeds |   |   | 5,691 |   |   |   | — |   |   |   | — |   |   |   | 5,691 |   |  
| Income taxes |   |   | 39,188 |   |   |   | 5,140 |   |   |   | — |   |   |   | 44,328 |   |  
| Prepaid expenses and other assets |   |   | (5,606 | ) |   |   | (38,558 | ) |   |   | 34,120 |   |   |   | (10,044 | ) |  
| Asset retirement obligations |   |   | (79,950 | ) |   |   | (1,593 | ) |   |   | — |   |   |   | (81,543 | ) |  
| Accounts payable and accrued liabilities |   |   | 27,415 |   |   |   | 717 |   |   |   | — |   |   |   | 28,132 |   |  
| Other |   |   | 32,418 |   |   |   | — |   |   |   | (34,120 | ) |   |   | (1,702 | ) |  
| Net cash provided by operating activities |   |   | 426,724 |   |   |   | 134,634 |   |   |   | — |   |   |   | 561,358 |   |  
| Investing activities: |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  
| Acquisition of property interest in oil and natural gas properties |   |   | (82,424 | ) |   |   | — |   |   |   | — |   |   |   | (82,424 | ) |  
| Investment in oil and natural gas properties and equipment |   |   | (331,303 | ) |   |   | (220,651 | ) |   |   | — |   |   |   | (551,954 | ) |  
| Investment in subsidiary |   |   | (86,017 | ) |   |   | — |   |   |   | 86,017 |   |   |   | — |   |  
| Proceeds from sales of assets and other, net |   |   | 21,008 |   |   |   | — |   |   |   | — |   |   |   | 21,008 |   |  
| Purchases of furniture, fixtures, misc. sales and other |   |   | (1,435 | ) |   |   | — |   |   |   | — |   |   |   | (1,435 | ) |  
| Net cash used in investing activities |   |   | (480,171 | ) |   |   | (220,651 | ) |   |   | 86,017 |   |   |   | (614,805 | ) |  
| Financing activities: |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  
| Borrowings of long-term debt - revolving bank credit facility |   |   | 563,000 |   |   |   | — |   |   |   | — |   |   |   | 563,000 |   |  
| Repayments of long-term debt - revolving bank credit facility |   |   | (443,000 | ) |   |   | — |   |   |   | — |   |   |   | (443,000 | ) |  
| Debt issuance costs |   |   | (3,892 | ) |   |   | — |   |   |   | — |   |   |   | (3,892 | ) |  
| Dividends to shareholders |   |   | (58,846 | ) |   |   | — |   |   |   | — |   |   |   | (58,846 | ) |  
| Investment from parent |   |   | — |   |   |   | 86,017 |   |   |   | (86,017 | ) |   |   | — |   |  
| Other |   |   | (260 | ) |   |   | — |   |   |   | — |   |   |   | (260 | ) |  
| Net cash provided by financing activities |   |   | 57,002 |   |   |   | 86,017 |   |   |   | (86,017 | ) |   |   | 57,002 |   |  
| Increase in cash and cash equivalents |   |   | 3,555 |   |   |   | — |   |   |   | — |   |   |   | 3,555 |   |  
| Cash and cash equivalents, beginning of period |   |   | 12,245 |   |   |   | — |   |   |   | — |   |   |   | 12,245 |   |  
| Cash and cash equivalents, end of period |   | $ | 15,800 |   |   | $ | — |   |   | $ | — |   |   | $ | 15,800 |   |        Condensed Consolidating Statement of Cash Flows for the Twelve Months Ended December 31, 2012    
|   |    | ParentCompany
 |   |   | GuarantorSubsidiaries
 |   |   | Eliminations |   |   | ConsolidatedW&T
 Offshore, Inc.
 |   |  
|   |    | (In thousands) |   |  
| Operating activities: |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  
| Net income |   | $ | 71,984 |   |   | $ | 66,195 |   |   | $ | (66,195 | ) |   | $ | 71,984 |   |  
| Adjustments to reconcile net income to net cash provided by operating activities: |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  
| Depreciation, depletion, amortization and accretion |   |   | 271,270 |   |   |   | 84,962 |   |   |   | — |   |   |   | 356,232 |   |  
| Amortization of debt issuance costs and premium |   |   | 2,575 |   |   |   | — |   |   |   | — |   |   |   | 2,575 |   |  
| Share-based compensation |   |   | 12,398 |   |   |   | — |   |   |   | — |   |   |   | 12,398 |   |  
| Derivative loss |   |   | 13,954 |   |   |   | — |   |   |   | — |   |   |   | 13,954 |   |  
| Cash payments on derivative settlements (realized) |   |   | (7,664 | ) |   |   | — |   |   |   | — |   |   |   | (7,664 | ) |  
| Deferred income taxes |   |   | 83,981 |   |   |   | 4,128 |   |   |   | — |   |   |   | 88,109 |   |  
| Earnings of affiliates |   |   | (66,195 | ) |   |   | — |   |   |   | 66,195 |   |   |   | — |   |  
| Changes in operating assets and liabilities: |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  
| Oil and natural gas receivables |   |   | (2,597 | ) |   |   | 3,415 |   |   |   | — |   |   |   | 818 |   |  
| Joint interest and other receivables |   |   | (31,399 | ) |   |   | — |   |   |   | — |   |   |   | (31,399 | ) |  
| Insurance proceeds |   |   | 2,576 |   |   |   | — |   |   |   | — |   |   |   | 2,576 |   |  
| Income taxes |   |   | (89,568 | ) |   |   | 31,557 |   |   |   | — |   |   |   | (58,011 | ) |  
| Prepaid expenses and other assets |   |   | 7,442 |   |   |   | (118,320 | ) |   |   | 118,318 |   |   |   | 7,440 |   |  
| Asset retirement obligations |   |   | (112,199 | ) |   |   | (628 | ) |   |   | — |   |   |   | (112,827 | ) |  
| Accounts payable and accrued liabilities |   |   | 40,530 |   |   |   | (2,504 | ) |   |   | — |   |   |   | 38,026 |   |  
| Other |   |   | 119,244 |   |   |   | — |   |   |   | (118,318 | ) |   |   | 926 |   |  
| Net cash provided by operating activities |   |   | 316,332 |   |   |   | 68,805 |   |   |   | — |   |   |   | 385,137 |   |  
| Investing activities: |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  
| Acquisition of property interest in oil and natural gas properties |   |   | (205,550 | ) |   |   | — |   |   |   | — |   |   |   | (205,550 | ) |  
| Investment in oil and natural gas properties and equipment |   |   | (410,508 | ) |   |   | (68,805 | ) |   |   | — |   |   |   | (479,313 | ) |  
| Proceeds from sales of assets and other, net |   |   | 30,453 |   |   |   | — |   |   |   | — |   |   |   | 30,453 |   |  
| Purchases of furniture, fixtures, misc. sales and other |   |   | (3,031 | ) |   |   | — |   |   |   | — |   |   |   | (3,031 | ) |  
| Net cash used in investing activities |   |   | (588,636 | ) |   |   | (68,805 | ) |   |   | — |   |   |   | (657,441 | ) |  
| Financing activities: |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  
| Issuance of 8.50% Senior Notes |   |   | 318,000 |   |   |   | — |   |   |   | — |   |   |   | 318,000 |   |  
| Borrowings of long-term debt - revolving bank credit facility |   |   | 732,000 |   |   |   | — |   |   |   | — |   |   |   | 732,000 |   |  
| Repayments of long-term debt - revolving bank credit facility |   |   | (679,000 | ) |   |   | — |   |   |   | — |   |   |   | (679,000 | ) |  
| Debt issuance costs |   |   | (8,510 | ) |   |   | — |   |   |   | — |   |   |   | (8,510 | ) |  
| Dividends to shareholders |   |   | (82,832 | ) |   |   | — |   |   |   | — |   |   |   | (82,832 | ) |  
| Other |   |   | 379 |   |   |   | — |   |   |   | — |   |   |   | 379 |   |  
| Net cash provided by financing activities |   |   | 280,037 |   |   |   | — |   |   |   | — |   |   |   | 280,037 |   |  
| Increase in cash and cash equivalents |   |   | 7,733 |   |   |   | — |   |   |   | — |   |   |   | 7,733 |   |  
| Cash and cash equivalents, beginning of period |   |   | 4,512 |   |   |   | — |   |   |   | — |   |   |   | 4,512 |   |  
| Cash and cash equivalents, end of period |   | $ | 12,245 |   |   | $ | — |   |   | $ | — |   |   | $ | 12,245 |   |        Condensed Consolidating Statement of Cash Flows for the Twelve Months Ended December 31, 2011    
|   |    | ParentCompany
 |   |   | GuarantorSubsidiaries
 |   |   | Eliminations |   |   | ConsolidatedW&T
 Offshore, Inc.
 |   |  
|   |    | (In thousands) |   |  
| Operating activities: |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  
| Net income |   | $ | 172,817 |   |   | $ | 92,533 |   |   | $ | (92,533 | ) |   | $ | 172,817 |   |  
| Adjustments to reconcile net income to net cash provided by operating activities: |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  
| Depreciation, depletion, amortization and accretion |   |   | 241,687 |   |   |   | 87,099 |   |   |   | — |   |   |   | 328,786 |   |  
| Amortization of debt issuance costs |   |   | 2,010 |   |   |   | — |   |   |   | — |   |   |   | 2,010 |   |  
| Loss on extinguishment of debt |   |   | 22,694 |   |   |   | — |   |   |   | — |   |   |   | 22,694 |   |  
| Share-based compensation |   |   | 9,710 |   |   |   | — |   |   |   | — |   |   |   | 9,710 |   |  
| Derivative gain |   |   | (1,896 | ) |   |   | — |   |   |   | — |   |   |   | (1,896 | ) |  
| Cash payments on derivative settlements (realized) |   |   | (9,873 | ) |   |   | — |   |   |   | — |   |   |   | (9,873 | ) |  
| Deferred income taxes |   |   | 76,717 |   |   |   | (14,882 | ) |   |   | — |   |   |   | 61,835 |   |  
| Earnings of affiliates |   |   | (92,533 | ) |   |   | — |   |   |   | 92,533 |   |   |   | — |   |  
| Changes in operating assets and liabilities: |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  
| Oil and natural gas receivables |   |   | (27,709 | ) |   |   | 9,070 |   |   |   | — |   |   |   | (18,639 | ) |  
| Joint interest and other receivables |   |   | 375 |   |   |   | — |   |   |   | — |   |   |   | 375 |   |  
| Insurance proceeds |   |   | 20,771 |   |   |   | — |   |   |   | — |   |   |   | 20,771 |   |  
| Income taxes |   |   | (71,655 | ) |   |   | 64,531 |   |   |   | — |   |   |   | (7,124 | ) |  
| Prepaid expenses and other assets |   |   | (8,003 | ) |   |   | (228,020 | ) |   |   | 228,214 |   |   |   | (7,809 | ) |  
| Asset retirement obligations |   |   | (59,958 | ) |   |   | — |   |   |   | — |   |   |   | (59,958 | ) |  
| Accounts payable and accrued liabilities |   |   | 8,589 |   |   |   | (514 | ) |   |   | (194 | ) |   |   | 7,881 |   |  
| Other |   |   | 227,918 |   |   |   | — |   |   |   | (228,020 | ) |   |   | (102 | ) |  
| Net cash provided by operating activities |   |   | 511,661 |   |   |   | 9,817 |   |   |   | — |   |   |   | 521,478 |   |  
| Investing activities: |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  
| Acquisition of property interest in oil and natural gas properties |   |   | (437,247 | ) |   |   | — |   |   |   | — |   |   |   | (437,247 | ) |  
| Investment in oil and natural gas properties and equipment |   |   | (277,147 | ) |   |   | (4,632 | ) |   |   | — |   |   |   | (281,779 | ) |  
| Investment in subsidiary |   |   | 5,185 |   |   |   | — |   |   |   | (5,185 | ) |   |   | — |   |  
| Proceeds from sales of assets and other, net |   |   | 15 |   |   |   | — |   |   |   | — |   |   |   | 15 |   |  
| Purchases of furniture, fixtures, misc. sales and other |   |   | (3,660 | ) |   |   | — |   |   |   | — |   |   |   | (3,660 | ) |  
| Net cash used in investing activities |   |   | (712,854 | ) |   |   | (4,632 | ) |   |   | (5,185 | ) |   |   | (722,671 | ) |  
| Financing activities: |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |  
| Issuance of 8.50% Senior Notes |   |   | 600,000 |   |   |   | — |   |   |   | — |   |   |   | 600,000 |   |  
| Repurchase of 8.25% Senior Notes |   |   | (450,000 | ) |   |   | — |   |   |   | — |   |   |   | (450,000 | ) |  
| Borrowings of long-term debt - revolving bank credit facility |   |   | 623,000 |   |   |   | — |   |   |   | — |   |   |   | 623,000 |   |  
| Repayments of long-term debt - revolving bank credit facility |   |   | (506,000 | ) |   |   | — |   |   |   | — |   |   |   | (506,000 | ) |  
| Repurchase premium and debt issuance costs |   |   | (32,288 | ) |   |   | — |   |   |   | — |   |   |   | (32,288 | ) |  
| Dividends to shareholders |   |   | (58,756 | ) |   |   | — |   |   |   | — |   |   |   | (58,756 | ) |  
| Investment from parent |   |   | — |   |   |   | (5,185 | ) |   |   | 5,185 |   |   |   | — |   |  
| Other |   |   | 1,094 |   |   |   | — |   |   |   | — |   |   |   | 1,094 |   |  
| Net cash provided by (used in) financing activities |   |   | 177,050 |   |   |   | (5,185 | ) |   |   | 5,185 |   |   |   | 177,050 |   |  
| Decrease in cash and cash equivalents |   |   | (24,143 | ) |   |   | — |   |   |   | — |   |   |   | (24,143 | ) |  
| Cash and cash equivalents, beginning of period |   |   | 28,655 |   |   |   | — |   |   |   | — |   |   |   | 28,655 |   |  
| Cash and cash equivalents, end of period |   | $ | 4,512 |   |   | $ | — |   |   | $ | — |   |   | $ | 4,512 |   |    |