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Asset Retirement Obligations (Tables) | 6 Months Ended
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Jun. 30, 2021
Asset Retirement Obligations |
Schedule of activity in asset retirement obligations | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Six Months Ended | ​ | Year ended
​ | ​ | ​ | June 30, | ​ | ​ | December 31,
​ | ​ | 2021 |  | 2020
Balance beginning of period | ​ | $ | 3,150,243 | ​ | $ | 2,909,855
Liabilities from drilling of new wells | ​ | ​ | 6,907 | ​ | ​ | 5,826
Wells plugged and abandoned | ​ | ​ | (31,945) | ​ | ​ | (850)
Change in estimates | ​ | ​ | (8,299) | ​ | ​ | 32,668
Accretion | ​ | ​ | 52,547 | ​ | ​ | 202,744
Balance end of period | ​ | $ | 3,169,453 | ​ | $ | 3,150,243

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- Definition Tabular disclosure of the changes in carrying amount of a liability for asset retirement obligations, for changes such as new obligations, changes in estimates of existing obligations, spending on existing obligations, property dispositions, and foreign currency translation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13201-110859 + Details
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