Operating Revenues. Oil, natural gas and natural gas liquids revenues were $98.7 million and $80.5 million for the three months ended September 30, 2022 and 2021 and $281.4 million and $199.9 million for the nine months ended September 30 2022 and 2021, respectively. The increase in revenues is primarily attributable to an increase in our average realized prices partially offset by slightly lower production volumes in 2022 compared to 2021. Average realized prices (excluding the effects of hedging arrangements) increased approximately $16.75 per Boe and $21.07 per Boe increase, respectively, for the quarter and nine months ended September 30, 2022 when compared with the same periods in 2021. The amount we realize for our production depends predominantly upon commodity prices, which are affected by changes in market demand and supply, as impacted by overall economic activity, weather, transportation take-away capacity constraints, inventory storage levels, quality of production, basis differentials and other factors.
Production for the three months ended September 30, 2022 and 2021, averaged 16,228 Boe/d and 17,728 Boe/d and 15,352 Boe/d and 15,890 Boe/d for the nine months ended September 30, 2022 and 2021, respectively. While production is lower in 2022 compared with 2021 due largely to the timing of capital expenditures and natural production declines on our existing producing wells, our production has increased from 14,767 Boe/d in the first quarter of 2022 to 16,228 Boe/d in the third quarter of 2022 and we have put online 5 gross (4.5 net) operated wells in 2022. Also impacting 2021 production volumes was temporarily shut-in production due to inclement weather which decreased average daily production by approximately 400 Boe/d in the first nine months of 2021.
Lease Operating Expenses. Lease operating expenses were $12.3 million and $12.0 million for the three months ended September 30, 2022 and 2021 and $35.7 million and $31.6 million for the nine months ended September 30, 2022 and 2021, respectively. On a per unit basis, lease operating expenses were $8.22 per Boe and $7.34 per Boe for the three months ended September 30, 2022 and 2021 and $8.52 per Boe and $7.29 per Boe for the nine months ended September 30, 2022 and 2021, respectively. The increase in lease operating expenses in 2022 results primarily from a market increase in maintenance, power, and chemical costs.
Workover and Other Expenses. Workover and other expenses were $2.6 million and $1.0 million for the three months ended September 30, 2022 and 2021 and $4.8 million and $2.3 million for the nine months ended September 30, 2022 and 2021, respectively. On a per unit basis, workover and other expenses were $1.71 per Boe and $0.61 per Boe for the three months ended September 30, 2022 and 2021 and $1.15 per Boe and $0.53 per Boe for the nine months ended September 30, 2022 and 2021, respectively. The increased workover and other expenses in 2022 relate to more significant workover projects undertaken in the current periods as well as market increases in service and material costs in 2022.
Taxes Other than Income. Taxes other than income were $5.6 million and $3.1 million for the three months ended September 30, 2022 and 2021 and $15.9 million and $9.2 million for the nine months ended September 30, 2022 and 2021, respectively. Most production taxes are based on realized prices at the wellhead. As revenues or volumes from oil and natural gas sales increase or decrease, production taxes on these sales also increase or decrease. On a per unit basis, taxes other than income were $3.76 per Boe and $1.89 per Boe for the three months ended September 30, 2022 and 2021 and $3.80 per Boe and $2.12 per Boe for the nine months ended September 30, 2022 and 2021, respectively.
Gathering and Other Expenses. Gathering and other expenses were $16.7 million and $15.9 million for the three months ended September 30, 2022 and 2021 and $47.8 million and $43.4 million for the nine months ended September 30, 2022 and 2021, respectively. Gathering and other expenses include gathering fees paid to third parties on our oil and natural gas production and operating expenses of our gathering support infrastructure. Approximately $7.0 million and $6.3 million for the three months ended September 30, 2022 and 2021 and $20.5 million and $15.0 million for the nine months ended September 30, 2022 and 2021, respectively, relate to gathering and marketing fees paid to third parties on our oil and natural gas production. Gathering and marketing fees increased in 2022 as we marketed higher quantities of sour gas production to third parties in the current year period. Approximately $9.7 million and $9.6 million for the three months ended September 30, 2022 and 2021 and $27.5 million and $28.5 million for the nine months ended September 30, 2022 and 2021, respectively, relate to operating expenses on our treating equipment and gathering support facilities. The decrease in treating equipment and gathering support facilities expenses for the year-to-date period results from lower operating expenses associated with our treating equipment.
General and Administrative Expense. General and administrative expense was $3.8 million and $4.0 million for the three months ended September 30, 2022 and 2021 and $12.5 million and $11.8 million for the nine months ended