| Business | Phone |
| Lancer Petroleum Corp 720 Bellah Dr, Irving 75062 | (972) 989-2803 |
| Las Colinas Oil Corp 580 Decker Dr 205, Irving 75062 | (972) 717-0235 |
| White Oak Production Co 4001 Acapulco St, Irving 75062 | (972) 719-7880 |
| Institutional Energy Mgmt 222 Las Colinas Blvd W, Irving 75039 | (972) 402-4252 |
| Paciugo 975 W John Carpenter Fwy, Irving 75039 | (972) 831-8588 |
| Pioneer Natural Resources Usa 5205 N O Connor Blvd 1400, Irving 75039 | (972) 444-9001 |
| Prodigy Oil & Gas 433 Las Colinas Blvd E 800, Irving 75039 | (972) 506-0909 |
| Tri Crescent Inc 389 W Fork 3711, Irving 75039 | (972) 556-1430 |
| Western Pipeline Corp 222 Las Colinas Blvd W, Irving 75039 | (972) 506-0808 |
| Geoscience & Technology Inc 1328 Etain Rd, Irving 75060 | (972) 986-5422 |
| Harken Energy Corp 5605 N Macarthur Blvd, Irving 75038 | (972) 753-1277 |
| Innotech Energy Corp 2000 Westridge Dr, Irving 75038 | (972) 550-0730 |
| North American Pipeline Inc 1425 Greenway Dr, Irving 75038 | (972) 753-4860 |
| Terra Resources Inc Irving 75038 | (972) 791-0115 |
| Vincent Foster Engineering Inc 2805 W Walnut Hill Ln # 1014, Irving 75038 | (972) 252-8351 |