| Business | Phone |
| Burlingame Engineers Inc 427 S Boston Ave # 832, Tulsa 74103 | (918) 583-2415 |
| George D Daly Jr & Assoc 7060 S Yale Ave # 902, Tulsa 74136 | (918) 496-8585 |
| Guardian Energy Consultants 403 S Cheyenne Ave # 403, Tulsa 74103 | (918) 599-9327 |
| Higgs Technologies 1638 S Carson Ave # 1120, Tulsa 74119 | (918) 585-3775 |
| Joshi Technologies Intl Inc 5801 E 41st St # 603, Tulsa 74135 | (918) 665-6419 |
| Kaplin & Assoc Inc 1438 S Boston Ave, Tulsa 74119 | (918) 599-0028 |
| Lee Keeling & Assoc Engineers 15 E 5th St # 3500, Tulsa 74103 | (918) 587-5521 |
| Woodbine Financial Corp 427 S Boston Ave # 303, Tulsa 74103 | (918) 584-5309 |
| Weinkauf Petroleum Inc 5100 S Atlanta Ave, Tulsa 74105 | (918) 749-8383 |
| Morrill & Assoc 6011 S Sheridan Rd, Tulsa 74145 | (918) 481-1055 |
| Nsi Technologies Inc 7030 S Yale Ave # 502, Tulsa 74136 | (918) 496-2071 |
| Ogci Petroskills 2930 S Yale Ave, Tulsa 74114 | (918) 828-2500 |
| Swearingen Petroleum Mgmt 5727 S Lewis Ave # 720, Tulsa 74105 | (918) 743-2332 |
| Petroleum Research & Cnsltng 9726 E 42nd St, Tulsa 74146 | (918) 632-0100 |
| Southmayd & Assoc Inc 2250 E 49th St # 6, Tulsa 74105 | (918) 743-7700 |
| Spears & Assoc Inc 5110 S Yale Ave # 410, Tulsa 74135 | (918) 496-3434 |
| Shamrock Oil & Gas 8801 S Yale Ave # 220, Tulsa 74137 | (918) 492-5100 |
| Software Enterprises Inc 2525 E 21st St # 202, Tulsa 74114 | (918) 744-1899 |
| Ray E Pfaff & Assoc 3942 E 31st St, Tulsa 74135 | (918) 742-5771 |
| Scientific Computer Applctns 2815 E Skelly Dr # 820, Tulsa 74105 | (918) 293-0306 |