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Callahan County, TX oil and gas wells

17,561 wells: 2,827 active, 11,995 plugged, run by 984 operators.

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

Top operators in Callahan

Operator	Active	Wells here
MERKAZ DRILLING LLC	37	72
MIDSCO	34	59
WILSON WELL SERVICE INC	33	73
CLAUSEN A. G.	28	59
WYLIE BROS. PROD. & DRGL. CO INC	27	49
CYBER ENVIRO-TECH INC	24	33
500X OPERATING LLC	24	25
MOMENTUM OPERATING CO. INC.	22	115
M2 SQUARED OPERATING LLC	21	27
HASKIT KENDALL	20	32
ADENRYEN LTD. CO.	19	27
KING ENERGY RESOURCES	19	25
SIMPLE OPERATING LLC	18	22
TOM-TOM OPERATING LLC	18	19
OHLHAUSEN OIL COMPANY	16	24
CLARK BRUCE A.	13	155
CDJ OIL CO.	13	27
3-S PRODUCTION CO.	12	23
GRAYROCK ENERGY II LLC	11	48
NOSIVAD OIL INC.	8	39
QUAIL WELL SERVICE INC.	7	49
PETEX	7	17
EASTLAND OPERATING L.L.C.	7	10
WEAVER GLOBAL OPERATING LLC	7	7
SOJOURNER DRILLING CORP	6	22

Wells

Not plugged · All wells · Plugged · Orphaned

Well	API / ID	Status	Type	Operator
No wells match.