Mueller Exploration, Inc. is a privately held independent oil and gas company headquartered in Humble, Texas, with operational roots dating back to 1982 through Mueller Engineering Corp. The company provides full-cycle exploration, drilling, completion, production, and contract operating services, managing both its own operated properties and wells for third-party operators across Texas, with a strong focus on the Eagle Ford Shale and Gulf Coast regions.
Estimated Well Count: Approximately 12 actively producing operated wells in Texas, with additional permits available for future drilling. The company’s producing assets are concentrated in counties including Live Oak, Hidalgo, Starr, Wharton, San Jacinto, and others.
Company Information
- Head Office: 7601 FM 1960 Road East, Suite 318, Humble, TX 77346
- Mailing Address: P.O. Box 1274, Portland, TX 78374
- Phone: (361) 882-7888
- Email: Muelrexp@Muelrexp.com
- Website: www.muelrexp.com
Mueller Exploration, Inc. – Wells Drilled Summary (Since 2016)
Dataset Overview
- Total Wells Drilled: 12
- Wells Drilled (CY 2026): 2
Activity by Play and County
| Play | County | Wells Drilled |
|---|---|---|
| Eagle Ford | Live Oak | 5 |
| Eagle Ford | Frio | 2 |
| Rio Grande Valley | Starr | 2 |
| Texas Gulf Coast | Brazoria | 1 |
| Texas Gulf Coast | Galveston | 1 |
| Unknown | Unknown County | 1 |
Wells Drilled by County
| County | Wells Drilled |
|---|---|
| Live Oak | 5 |
| Frio | 2 |
| Starr | 2 |
| Brazoria | 1 |
| Galveston | 1 |
| Unknown | 1 |
Wells Drilled by Contractor and Rig
| Contractor and Rig | Wells Drilled |
|---|---|
| Ensign T120 | 4 |
| Nabors 1208 | 2 |
| Precision 750 | 1 |
| Price 4 | 1 |
| Ensign T103 | 1 |
| Unknown | 3 |
Summary
Mueller Exploration has drilled 12 wells since 2016, with 2 wells drilled during calendar year 2026. Activity has been concentrated in the Eagle Ford play (7 wells), particularly Live Oak County (5 wells), while Ensign T120 has been the company’s most frequently utilized drilling rig, accounting for 4 wells.





