Lease operating expenses, which included ad valorem taxes, were $10.9 million, or $15.68 per Boe, in 2012 compared to $8.5 million, or $19.56 per Boe, in 2011. Development and drilling activities in 2012 have equated to an increase in the aggregate number of producing wells and operating expenses; however the realized production received from these new wells resulted in approximately 20% lower lease operating expense per Boe.
Production taxes in 2012 were $2.0 million, or $2.82 per Boe, for an effective tax rate of approximately 3.2% compared to production taxes in 2011 of $1.9 million, or $4.31 per Boe, for an effective tax rate of 4.9%. The decrease in the 2012 effective tax rate was due to select Southern Oklahoma properties having received a reduced production tax rate from Oklahoma's Enhanced Oil Recovery Project Gross Production Tax Exemption.
In the Partnership's first full year as a publicly traded partnership, total general and administrative expenses increased $7.2 million to $11.0 million in 2012, which included $6.3 million in non-cash equity-based compensation. In comparison, 2011 general and administrative expenses of $3.8 million included $1.7 million in non-cash equity-based compensation. Additional variances compared to the prior year were related to higher professional fees necessary to comply with public reporting requirements and incremental personnel costs from the hiring of new staff.
Adjusted EBITDA for 2012 was $47.7 million, approximately 99% above 2011 Adjusted EBITDA of $24.0 million. Distributable Cash Flow for 2012 was $41.9 million after subtracting $1.6 million in cash interest expense and $4.2 million in estimated maintenance capital expenditures.Fourth Quarter 2012 Results Mid-Con Energy's production volumes for the fourth quarter of 2012 were 208 MBoe or 2,261 Boe per day on average, compared to production of 136 MBoe or 1,481 Boe per day on average in the fourth quarter of 2011. Oil sales, excluding the effect of commodity derivatives, were $17.0 million in fourth quarter of 2012 and resulted in an average realized oil price of $83.50 per barrel (Bbl), compared to $90.35 per Bbl in the fourth quarter of 2011. Approximately 64% of Mid-Con Energy's oil production during the fourth quarter of 2012 was hedged at an average price of $101.59 per Bbl. Given the favorable variance between the average hedge price and NYMEX WTI, the Partnership received $1.7 million for realized commodity derivatives during the fourth quarter of 2012, or $8.52 per Bbl. This compares to $1.4 million paid during the fourth quarter of 2011, or ($10.45) per Bbl.