Jefferson County, Texas Wells Summary
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Total wells
Last 60 days
Prior 60 days
60-day trend
Jefferson County contains 334 wells on file, with top operators including RHEACO OIL COMPANY, LTD. and HILCORP ENERGY COMPANY.
Wells in Jefferson span several oil & gas fields including SPINDLETOP and FANNETT.
Most recent well on record: MCFADDIN RANCH, operated by KINGWOOD EXPLORATION LLC — 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
Jefferson 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.
134 wells plotted ·
0 active in last 60 days
Basemap © OpenStreetMap contributors · well data © Oil and Gas Information · tiles served by DynamoMap
Top Operators in Jefferson County by total wells
Operators: Rheaco Oil Company, Ltd., Hilcorp Energy Company, Samson Exploration, Llc, Ballard Exploration Company,inc., Samson Lone Star, Llc, Kingwood Exploration Llc, Milestone Operating, Inc., Cimarex Energy Co., U.s. Department Of Energy, Square Mile Energy, L.l.c..
Top Oil & Gas Fields intersecting Jefferson County
Fields: Spindletop, Fannett, Wildcat, Big Hill, Constitution (Yegua), Lovells Lake (Marg. 2), Gulf Terrace (Yegua Ey-2), Constitution (Westbury), Constitution, South (Yegua), Clam Lake.
Top Counties in Texas most active by total wells
Compare Jefferson against the other busiest counties in Texas:
Recent wells
| Well Name | Last activity | Updates | Operator | API |
|---|---|---|---|---|
| MCFADDIN RANCH | 2026-08-04 | 9 | KINGWOOD EXPLORATION LLC | 24532060 |
| U.S. DEPARTMENT OF ENERGY | 2026-08-03 | 5 | U.S. DEPARTMENT OF ENERGY | 24531675 |
| GLADYS CITY | 2026-07-28 | 2 | RHEACO OIL COMPANY, LTD. | 24532930 |
| MCFADDIN RANCH | 2026-07-22 | 12 | KINGWOOD EXPLORATION LLC | 24532841 |
| U.S. DEPARTMENT OF ENERGY | 2026-07-20 | U.S. DEPARTMENT OF ENERGY | 24531674 | |
| GOLDEN TRIANGLE STORAGE DISPOSAL | 2026-06-15 | 2 | GOLDEN TRIANGLE STORAGE, LLC | 24532925 |
| GOLDEN TRIANGLE STORAGE | 2026-06-11 | 2 | GOLDEN TRIANGLE STORAGE, LLC | 24532915 |
| GCCI, LLC | 2026-06-09 | 8 | ENERGY TRANSFER SPINDLETOP LLC | 24532874 |
| DEEP SKY | 2026-02-12 | 2 | BALLARD EXPLORATION COMPANY,INC. | 24532919 |
| NOME SWD | 2025-12-10 | 9 | HILCORP ENERGY COMPANY | 24532502 |
Texas RRC data downloads
Surface Ownership Records:
