Chaparral Energy, Inc. provided production guidance for the fourth quarter and full year of 2018. For the quarter, the company’s total production was an estimated 21.7 MBoe/d. Fourth quarter 2018 STACK production was an estimated 16.6 MBoe/d, which represents a 60% increase when compared to the fourth quarter of 2017 and a 6% increase compared to the third quarter of 2018. For the year, the company’s total production was an estimated 20.5 MBoe/d, of which 36% was oil and 25% was natural gas liquids (NGLs). STACK production for the full year 2018 was an estimated 14.5 MBoe/d, an annualized growth rate of 52% compared to 2017, of which 35% was oil and 26% was NGLs.