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ASSET RETIREMENT OBLIGATION
12 Months Ended
Dec. 31, 2019
ASSET RETIREMENT OBLIGATION  
ASSET RETIREMENT OBLIGATION

NOTE 11 – ASSET RETIREMENT OBLIGATION

A reconciliation of the asset retirement obligation for the years ended December 31, 2017, 2018 and 2019 is as follows:

Balance, December 31, 2016

$

7,957,035

Liabilities incurred

1,297,289

Liabilities settled

(766,595)

Accretion expense

567,968

Balance, December 31, 2017

$

9,055,697

Liabilities acquired

2,571,549

Liabilities incurred

1,311,956

Liabilities settled

(577,824)

Revision of estimate (1)

87,960

Accretion expense

606,459

Balance, December 31, 2018

$

13,055,797

Liabilities acquired

3,745,642

Liabilities incurred

631,727

Liabilities settled

(1,589,654)

Accretion expense

943,707

Balance, December 31, 2019

$

16,787,219

(1)Several factors are considered in the annual review process, including inflation rates, current estimates for removal cost, and estimated remaining useful life of the assets. The 2018 revision of estimates reflect decreases in the estimated remaining useful life of certain assets.