Callahan County, Texas Wells Summary
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Total wells
Last 60 days
Prior 60 days
60-day trend
Callahan County contains 255 wells on file, with top operators including MERKAZ DRILLING, LLC and RYHOLLAND FIELDER, INC.
Wells in Callahan span several oil & gas fields including CALLAHAN COUNTY REGULAR and WILDCAT.
Most recent well on record: MCFARLANE, J. W., operated by ADENRYEN, LTD. CO. — last updated August 2026.
Active drilling rigs · Baker Hughes snapshot, week of 2026-08-21
By basin
- 176 Permian
- 50 Eagle Ford
- 32 Haynesville
- 22 Other
- 1 Barnett
Drilling for
- 227 Oil
- 54 Gas
Callahan County well density
Every dot is one well — small blue dots are historic wells;
larger orange dots are wells with activity in the last 60 days.
127 wells plotted ·
0 active in last 60 days
Basemap © OpenStreetMap contributors · well data © Oil and Gas Information · tiles served by DynamoMap
Top Operators in Callahan County by total wells
Operators: Merkaz Drilling, Llc, Ryholland Fielder, Inc, Quail Well Service, Inc., Adenryen, Ltd. Co., C & L Oil Company, Haskit, Kendall, Hess, Jerry Operating Co., Deep Creek Exploration Llc, Momentum Operating Co., Inc., Firecreek Texas, Inc..
Top Oil & Gas Fields intersecting Callahan County
Fields: Callahan County Regular, Wildcat, Callahan County Regular (Gas), Egn (King Sand), Joe Pat (Gardner Sand), Clunder (Bluff Creek), A. C. Scott, W.(Cross Plains Sd), Finley (Congl.), Abilene, West (Tannehill Sand), Dyer (Moran).
Top Counties in Texas most active by total wells
Compare Callahan against the other busiest counties in Texas:
Recent wells
| Well Name | Last activity | Updates | Operator | API |
|---|---|---|---|---|
| MCFARLANE, J. W. | 2026-08-16 | 7 | ADENRYEN, LTD. CO. | 05937046 |
| LYTLE GAP (COOK SAND) UNIT | 2026-07-22 | 3 | MOMENTUM OPERATING CO., INC. | 05936979 |
| RAMSEY, CAL -B- | 2026-07-01 | 3 | M2 SQUARED OPERATING, LLC | 05980541 |
| RAMSEY, CAL -B- | 2026-07-01 | 2 | M2 SQUARED OPERATING, LLC | 05936417 |
| BOREN | 2026-06-01 | WEAVER GLOBAL OPERATING, LLC | 05936062 | |
| BATTLE, E.R. | 2026-05-19 | MIDSCO | 05932511 | |
| RAMSEY, CAL | 2026-04-01 | M2 SQUARED OPERATING, LLC | 05932146 | |
| SNYDER-SEALES | 2026-01-13 | 2 | TOM-TOM OPERATING, LLC | 05937195 |
| WYLIE A | 2025-08-22 | 2 | HASKIT, KENDALL | 05937200 |
| DAVIS, J. T. ESTATE | 2025-05-27 | 4 | WYLIE BROS. PROD. & DRGL. CO,INC | 05930599 |
Texas RRC data downloads
Surface Ownership Records:
