Marketing and Other Deductions
Our marketing and other deductions include product marketing expense, which is a post-production expense. Marketing and other deductions for the three months ended September 30, 2023 were $3.5 million, a decrease of $0.4 million from $3.1 million for the three months ended September 30, 2022. The decrease in marketing and other deductions was primarily related to the decrease in the average prices we received for oil, natural gas and NGL production for the three months ended September 30, 2023, partially offset by marketing and other deductions associated with the Hatch Acquisition, the MB Minerals Acquisition and the LongPoint Acquisition.
General and Administrative Expenses
General and administrative expenses for the three months ended September 30, 2023 were $10.4 million an increase of $2.9 million from $7.5 million for the three months ended September 30, 2022. Included within general and administrative expenses are non-cash expenses for unit-based compensation as a result of the amortization of restricted units that have been issued by us over various periods. The increase in general and administrative expenses was attributable to a $0.3 million increase in unit-based compensation expense, expenses related to a one-time cash bonus paid to employees and cash general and administrative expenses resulting from an increase in our costs associated with company growth.
Interest Expense
Interest expense for the three months ended September 30, 2023 was $6.7 million compared to $3.7 million for the three months ended September 30, 2022. The increase in interest expense was primarily due to a 3.1% increase in the weighted average interest rate on the Partnership’s outstanding borrowings for the three months ended September 30, 2023 and also due to an increase in the overall long-term debt balance as a result of borrowings associated with the Hatch Acquisition, the MB Minerals Acquisition and the LongPoint Acquisition.
Income Tax Expense
We recorded an income tax expense of $0.1 million for the three months ended September 30, 2023. The income tax expense recorded during the three months ended September 30, 2023 was due to a change in the estimated income tax expense for the year ended December 31, 2023. We recorded a benefit from income taxes of $0.2 million for the three months ended September 30, 2022. The benefit from income taxes recorded during the three months ended September 30, 2022 was due to a change in the estimated income tax expense for the year ended December 31, 2022.
Comparison of the Nine Months Ended September 30, 2023 to the Nine Months Ended September 30, 2022
Oil, Natural Gas and NGL Revenues
For the nine months ended September 30, 2023, our oil, natural gas and NGL revenues were $183.6 million, a decrease of $33.9 million from $217.5 million for the nine months ended September 30, 2022. The decrease in oil, natural gas and NGL revenues was primarily related to the decrease in the average prices we received for oil, natural gas and NGL production, partially offset by an increase in production volumes for the nine months ended September 30, 2023 as discussed below.
Our revenues are a function of oil, natural gas, and NGL production volumes sold and average prices received for those volumes. The production volumes were 5,051,030 Boe or 18,523 Boe/d, for the nine months ended September 30, 2023, an increase of 909,362 Boe or 3,654 Boe/d, from 4,141,668 Boe or 14,869 Boe/d, for the nine months ended September 30, 2022. The increase in production for the nine months ended September 30, 2023 was primarily attributable to production associated with the Hatch Acquisition and the MB Minerals Acquisition, and to a lesser extent, production associated with the LongPoint Acquisition.
Our operators received an average of $76.17 per Bbl of oil, $2.66 per Mcf of natural gas and $23.67 per Bbl of NGL for the volumes sold during the nine months ended September 30, 2023 compared to $94.84 per Bbl of oil, $6.23 per Mcf of natural gas and $40.71 per Bbl of NGL for the volumes sold during the nine months ended September 30, 2022. These average prices received during the nine months ended September 30, 2023 decreased 19.7% or $18.67 per Bbl of oil and 57.3% or 3.57 per Mcf of natural gas as compared to the nine months ended September 30, 2022. This change is