![5.19.21b 5.19.21b](http://www.trueoil.com/wp-content/uploads/elementor/thumbs/5.19.21b-scaled-piekewuds4nqz9ga9x02c9u7o2y3458eelztpzwif8.jpg)
Casper, Wyoming (Main Office)
(307)237-9301
![5.19.21b 5.19.21b](http://www.trueoil.com/wp-content/uploads/elementor/thumbs/5.19.21b-scaled-piekewuds4nqz9ga9x02c9u7o2y3458eelztpzwif8.jpg)
Donkey Creek, Wyoming (Field Office)
(307) 756-3245
![5.19.21 5.19.21](http://www.trueoil.com/wp-content/uploads/elementor/thumbs/5.19.21-scaled-pieke4n833l5ayl8ukt99gyduit2p84gaqf9bp2blw.jpg)
Clareton, Wyoming (Field Office)
(307) 746-2586
![5.19.21 5.19.21](http://www.trueoil.com/wp-content/uploads/elementor/thumbs/5.19.21-scaled-pieke4n833l5ayl8ukt99gyduit2p84gaqf9bp2blw.jpg)
Red Wing Creek, North Dakota (Field Office)
(701) 586-3122
Additional Field Areas
- SW Wyoming and Colorado
- Breed Creek/Melstone – Central Montana
- Sidney – Eastern Montana
- Utopia – Northern Montana
- Southern Powder River Basin