XML 122 R146.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Supplemental Information on Oil and Natural Gas Producing Activities - Additional Information (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended |
--- | --- | ---
Dec. 31, 2012 MBbls | Dec. 31, 2011 MBbls | Dec. 31, 2010 MBbls | Dec. 31, 2009 MBbls
Reserve Quantities [Line Items] |  |  |  |  |  |  |  |
Percentage of proved reserves estimated by the Company | 2.40% |  |  |  |  |  |  |
Standardized measure of discounted future net cash flows | 5,840,368 | [1] | 5,216,337 | [1] | 3,683,515 | [1] |  |
Oil Reserves |  |  |  |  |  |  |  |
Reserve Quantities [Line Items] |  |  |  |  |  |  |  |
Change in proved reserves (in MBbls for Oil/MMcf for Natural Gas) | 108,800 |  | 36,000 |  | 154,200 |  |  |
Revisions of previous estimates (in MBbls for Oil and NGLs/MMcf for Natural Gas) |  |  | (9,278) |  | 12,999 |  |  |
Proved developed and undeveloped reserves, extensions, discoveries, and additions (in MBbls for Oil/MMcf for Natural Gas) |  |  | 55,577 |  | 69,512 |  |  |
Proved developed and undeveloped reserves, production (in MBbls for Oil/MMcf for Natural Gas) |  |  | (11,830) |  | (7,386) |  |  |
Proved developed and undeveloped reserves, sales of reserves in place (in MBbls for Oil/MMcf for Natural Gas) | 23,600 |  | (43,331) |  | 0 |  |  |
Proved reserves (in MBbls for Oil and NGLs/MMcf for Natural Gas) |  |  | 244,785 | [2] | 252,114 |  | 105,349 |
Natural Gas Reserves |  |  |  |  |  |  |  |
Reserve Quantities [Line Items] |  |  |  |  |  |  |  |
Change in proved reserves (in MBbls for Oil/MMcf for Natural Gas) | 60,500 |  | 68,600 |  |  |  |  |
Revisions of previous estimates (in MBbls for Oil and NGLs/MMcf for Natural Gas) | (538,214) | [3] | (164,845) | [3] | 867,931 | [3] |  |
Proved developed and undeveloped reserves, extensions, discoveries, and additions (in MBbls for Oil/MMcf for Natural Gas) | 489,302 | [3] | 299,848 | [3] | 211,150 | [3] |  |
Proved developed and undeveloped reserves, production (in MBbls for Oil/MMcf for Natural Gas) | (93,549) | [3] | (69,306) | [3] | (76,226) | [3] |  |
Proved developed and undeveloped reserves, sales of reserves in place (in MBbls for Oil/MMcf for Natural Gas) | (548) | [3] | (476,212) | [3] | (207) | [3] |  |
Proved reserves (in MBbls for Oil and NGLs/MMcf for Natural Gas) | 1,415,042 | [2],[3] | 1,355,056 | [2],[3] | 1,762,665 | [3] | 680,075 | [3]
Oil Excluding NGLs |  |  |  |  |  |  |  |
Reserve Quantities [Line Items] |  |  |  |  |  |  |  |
Revisions of previous estimates (in MBbls for Oil and NGLs/MMcf for Natural Gas) | (37,394) |  |  |  |  |  |  |
Proved developed and undeveloped reserves, extensions, discoveries, and additions (in MBbls for Oil/MMcf for Natural Gas) | 89,656 |  |  |  |  |  |  |
Proved developed and undeveloped reserves, production (in MBbls for Oil/MMcf for Natural Gas) | (15,868) |  |  |  |  |  |  |
Proved developed and undeveloped reserves, sales of reserves in place (in MBbls for Oil/MMcf for Natural Gas) | (20,269) |  |  |  |  |  |  |
Proved reserves (in MBbls for Oil and NGLs/MMcf for Natural Gas) | 262,045 |  | 214,450 | [2] |  |  |  |
Permian Properties |  |  |  |  |  |  |  |
Reserve Quantities [Line Items] |  |  |  |  |  |  |  |
Proved developed and undeveloped reserves, net (in MMBoe) | 198.9 |  |  |  |  |  |  |
Proved Developed Reserves as a Percentage of Total Proved Reserves | 55.00% |  |  |  |  |  |  |
Standardized measure of discounted future net cash flows | 2,500,000 |  |  |  |  |  |  |
Mid-Continent and Permian Basin | Oil Reserves |  |  |  |  |  |  |  |
Reserve Quantities [Line Items] |  |  |  |  |  |  |  |
Revisions of previous estimates (in MBbls for Oil and NGLs/MMcf for Natural Gas) | (22,300) |  |  |  |  |  |  |
Proved developed and undeveloped reserves, extensions, discoveries, and additions (in MBbls for Oil/MMcf for Natural Gas) | 116,900 |  |  |  |  |  |  |
[1] | Includes approximately $952.7 million and $932.8 million attributable to noncontrolling interests at December 31, 2012 and 2011, respectively.
[2] | Proved reserves at December 31, 2012 and 2011, respectively, include approximately 17,340 MBbls and 17,018 MBbls of oil, 5,132 MBbls and 1,782 MBbls of NGLs and 94,543 MMcf and 45,500 MMcf of natural gas attributable to noncontrolling interests.
[3] | Natural gas reserves are computed at 14.65 pounds per square inch absolute and 60 degrees Fahrenheit.

X
- Definition Change in Proved Reserves + References No definition available. + Details
Name: | sd_ChangeInProvedReserves
Namespace Prefix: | sd_
Data Type: | num:volumeItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of total proved reserves estimated by the Company. + References No definition available. + Details
Name: | sd_PercentageProvedReservesEstimateCompany
Namespace Prefix: | sd_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Proved Developed and Undeveloped Reserves Net BOE + References No definition available. + Details
Name: | sd_ProvedDevelopedAndUndevelopedReservesNetBoe
Namespace Prefix: | sd_
Data Type: | num:energyItemType
Balance Type: | na
Period Type: | instant

X
- Definition Proved Developed Reserves as a Percentage of Total Proved Reserves + References No definition available. + Details
Name: | sd_ProvedDevelopedReservesAsPercentageOfTotalProvedReserves
Namespace Prefix: | sd_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition This amount is the future net cash flows less the computed discount. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62424-109447 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 31 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62455-109447 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 19 -Paragraph 59Y -Subparagraph f -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesStandardizedMeasure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Additions to proved reserves that result from (1) extension of the proved acreage of previously discovered (old) reservoirs through additional drilling in periods after discovery and (2) discovery of new fields with proved reserves or of new reservoirs of proved reserves in old fields. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 5 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e61831-109447 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 19 -Paragraph 59F -Subparagraph d -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_ProvedDevelopedAndUndevelopedReservesExtensionsDiscoveriesAndAdditions
Namespace Prefix: | us-gaap_
Data Type: | num:volumeItemType
Balance Type: | na
Period Type: | duration

X
- Definition The net quantity of proved reserves as of the balance sheet date. Proved oil reserves are the estimated quantities of crude oil and natural gas liquids which geological and engineering data demonstrate with reasonable certainty to be recoverable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 10 -Paragraph a -Subparagraph 2 -Article 4 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e61831-109447 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-10.(a)(2)) -URI http://asc.fasb.org/extlink&oid=21918352&loc=d3e511914-122862 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 19 -Paragraph 59F -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_ProvedDevelopedAndUndevelopedReservesNet
Namespace Prefix: | us-gaap_
Data Type: | num:volumeItemType
Balance Type: | na
Period Type: | instant

X
- Definition Production of proved reserves. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 5 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e61831-109447 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 19 -Paragraph 59F -Subparagraph e -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_ProvedDevelopedAndUndevelopedReservesProduction
Namespace Prefix: | us-gaap_
Data Type: | num:volumeItemType
Balance Type: | na
Period Type: | duration

X
- Definition Revisions represent changes in previous estimates of proved reserves, either upward or downward, resulting from new information (except for an increase in proved acreage) normally obtained from development drilling and production history or resulting from change in economic factors. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 5 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e61831-109447 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 19 -Paragraph 59F -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_ProvedDevelopedAndUndevelopedReservesRevisionsOfPreviousEstimatesIncreaseDecrease
Namespace Prefix: | us-gaap_
Data Type: | num:volumeItemType
Balance Type: | na
Period Type: | duration

X
- Definition Sales of minerals in place. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 5 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e61831-109447 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 19 -Paragraph 59F -Subparagraph f -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_ProvedDevelopedAndUndevelopedReservesSalesOfMineralsInPlace
Namespace Prefix: | us-gaap_
Data Type: | num:volumeItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ReserveQuantitiesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration