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Mcmullen County, TX oil and gas wells

9,084 wells: 3,647 active, 3,666 plugged, run by 500 operators.

Mcmullen County, TX ranks #57 among Texas counties by wells on record, with 1% of the state's 1,397,551 wells. 3,647 of its wells (40%) are active, above the statewide share of 27%. Another 780 are shut in or temporarily abandoned. Of the 8,065 wells here with a type on record, 46% are oil wells, 28% dry holes and 22% gas wells. Drilling records here go back to 1935. Of the 4,912 wells with a drilling date, 1,187 (24%) were drilled in 2016 or later, the most recent in 2026. 799 wells are listed as permitted or being drilled. 268 wells have been plugged since 2016 (counting wells with a plug date on record). Wells with a recorded depth average 10,252 ft. 500 operators have wells here. The largest by active wells is VARAS ENERGY OPERATING COMPANY, with 551 active (15% of the county's active wells).

Figures from the Railroad Commission of Texas, updated 2026-10-17.

Top operators in Mcmullen

Wells

Not plugged · All wells · Plugged · Orphaned · Disposal (SWD) and injection

Mcmullen County, TX well questions