| Business | Phone |
| Aminex Usa Inc 403 E Commerce St, San Antonio 78205 | (210) 271-9919 |
| Aransas Petroleum Co 900 Ne Loop 410 202, San Antonio 78209 | (210) 828-5422 |
| Arrow Petroleum Co 900 Ne Loop 410 A123, San Antonio 78209 | (210) 824-2331 |
| Bowers Office 615 Belknap Pl, San Antonio 78212 | (210) 733-0911 |
| C R Dick Eyster 240 E Huisache Ave, San Antonio 78212 | (210) 224-6817 |
| Cibolo Energy Operating Inc 10100 Reunion Pl, San Antonio 78216 | (210) 494-9189 |
| Cordele Development Inc 314 E Commerce St 400, San Antonio 78205 | (210) 223-5564 |
| Coates Energy Trust 7373 Broadway St, San Antonio 78209 | (210) 820-0113 |
| Compressor & Engine Svc 900 Ne Loop 410, San Antonio 78209 | (210) 930-9335 |
| Discorbis Oil Co 8610 N New Braunfels Ave 602, San Antonio 78217 | (210) 828-8250 |
| Double U Oil Co 153 Treeline Park 300, San Antonio 78209 | (210) 829-1800 |
| Edwin M Jones Oil Co 115 E Travis St 404, San Antonio 78205 | (210) 226-8385 |
| Eugene W Gill 12 Donore Cir, San Antonio 78229 | (210) 342-0525 |
| Gulfstar Properties Inc 3740 Colony Dr, San Antonio 78230 | (210) 805-0700 |
| H H Phillips Jr 8918 Tesoro Dr 116, San Antonio 78217 | (210) 826-7510 |
| Hollimon Oil Corp 300 Austin Hwy, San Antonio 78209 | (210) 829-8822 |
| Hurd Enterprises Ltd 7373 Broadway St 200, San Antonio 78209 | (210) 829-5255 |
| Katz Oil Co 2700 Ne Loop 410, San Antonio 78217 | (210) 655-7111 |
| Lightning Oil Co 300 Argyle Ave, San Antonio 78209 | (210) 828-6203 |
| Mayo Oil Co 8918 Tesoro Dr 505, San Antonio 78217 | (210) 828-4610 |
| Meredith Mallory Jr Investment 8151 Broadway St 100, San Antonio 78209 | (210) 824-2319 |
| United Energex Inc 4940 Broadway St 200, San Antonio 78209 | (210) 826-0681 |
| Mpg Petroleum 8620 N New Braunfels Ave 411, San Antonio 78217 | (210) 828-4666 |
| Oso Exploration Co 1600 Ne Loop 410, San Antonio 78209 | (210) 824-0711 |
| Overly Operating Co 8610 N New Braunfels Ave 615, San Antonio 78217 | (210) 826-3822 |
| Primavera Resources 7373 Broadway St, San Antonio 78209 | (210) 824-0781 |
| S W Blount Iii 7870 Broadway St A, San Antonio 78209 | (210) 828-3175 |
| Seeker Oil Co 5108 Broadway St, San Antonio 78209 | (210) 828-6889 |
| Somex Energy Co 4 Sleepy Cove St, San Antonio 78230 | (210) 691-0854 |
| South Texas Operating Co 8610 N New Braunfels Ave 404, San Antonio 78217 | (210) 822-6196 |
| Tasajillo Energy 8700 Crownhill Blvd, San Antonio 78209 | (210) 829-7881 |
| Tidemark Petroleum 3527 Mary Mont Dr, San Antonio 78217 | (210) 826-6668 |
| West Petroleum Corp 314 E Commerce St 400, San Antonio 78205 | (210) 226-9275 |
| K 2 Petroleum 706 Balfour Dr, San Antonio 78239 | (210) 656-4844 |
| Mina Energy Inc 4737 College Park, San Antonio 78249 | (210) 493-1148 |
| Victoria Operating Inc 10632 N Ih 35, San Antonio 78233 | (210) 654-8336 |
| Olsen Energy Inc 3512 Paesanos Pkwy 102, San Antonio 78231 | (210) 496-2466 |