| ETEquipment Technology, L.l.c. | Oklahoma City | — | ◇ UNVERIFIED |
| EEExterran Engry Solutions LP | Broken Arrow | — | ◇ UNVERIFIED |
| FFForum Flow Equipment Mfg | Davis | — | ◇ UNVERIFIED |
| GIGefco Inc/enid Fabrication Fac | Enid | — | ◇ UNVERIFIED |
| GCGovernair CORP / 4841 N Sewell Air Conditioning Mfg Fac | Oklahoma City | — | ◇ UNVERIFIED |
| HCHughes Christensen CO / Beta Test Facility | Beggs | — | ◇ UNVERIFIED |
| NONational Oilwell Varco/ Flanagan Iron Works | Tulsa | — | ◇ UNVERIFIED |
| NONational Oilwell Varco LP - Mcalester W / Nov Mcalester Rig Operations | Mcalester | — | ◇ UNVERIFIED |
| NONational Oilwell Varco LP - Mission Pro / Nov Completion and Production Solution | Oklahoma City | — | ◇ UNVERIFIED |
| QMQuality Machine Services INC | Oklahoma City | — | ◇ UNVERIFIED |
| SKService King Manufacturing INC / Service King Mfg | Stroud | — | ◇ UNVERIFIED |
| SBSmith Bits a Schlumberger CO / Smith Bits | Ponca City | — | ◇ UNVERIFIED |
| SOSpm Oil and Gas PC - El Reno | El Reno | — | ◇ UNVERIFIED |
| SSStewart & Stevenson LLC | Edmond | — | ◇ UNVERIFIED |
| SMStillwater Marine Propulsion Sys | Stillwater | — | ◇ UNVERIFIED |
| TCTerex CORP Unit Rig Div | Tulsa | — | ◇ UNVERIFIED |
| UIUpco INC | Claremore | — | ◇ UNVERIFIED |
| WMWaldon Mfg Llc/waldon Mfg | Fairview | — | ◇ UNVERIFIED |
| 1180-Tulsa | Broken Arrow | 1–19 | ◐ LIKELY ACTIVE |
| AWArrowhead Winch - Okmulgee | Okmulgee | 20–99 | ◐ LIKELY ACTIVE |
| ACAuto Crane Company | Tulsa | 100–499 | ◐ LIKELY ACTIVE |
| BHBaker Hughes Pump Plant | Claremore | 100–499 | ◐ LIKELY ACTIVE |
| BTBranch #11 Tulsa | Tulsa | 1–19 | ◐ LIKELY ACTIVE |
| BWBranch #4 Woodward | Woodward | 1–19 | ◐ LIKELY ACTIVE |
| BBroce | Fairveiw | 20–99 | ◐ LIKELY ACTIVE |
| BABroken Arrow, OK | Broken Arrow | 100–499 | ◐ LIKELY ACTIVE |
| BABroken Arrow OK MFG | Broken Arrow | 100–499 | ◐ LIKELY ACTIVE |
| BCBurford Corp. | Maysville | 20–99 | ◐ LIKELY ACTIVE |
| CWClints Welding | Oklahoma City | 20–99 | ◐ LIKELY ACTIVE |
Crane 1 Services - Production | Beggs | 20–99 | ◐ LIKELY ACTIVE |
Crane 1 Services - Tulsa Service | Sand Springs | 1–19 | ◐ LIKELY ACTIVE |
| CECRC Evans Tulsa | Tulsa | 20–99 | ◐ LIKELY ACTIVE |
| DADiamond Attachments, LLC | Atoka | 20–99 | ◐ LIKELY ACTIVE |
| DPDWO - Perry Manufacturing Plant | Perry | 500+ | ◐ LIKELY ACTIVE |
| FMFammco Manufacturing | Tulsa | 1–19 | ◐ LIKELY ACTIVE |
| FWFlying W INC | Watonga | — | ◐ LIKELY ACTIVE |
| FEFranklin Electric - OKC2 | Oklahoma City | 20–99 | ◐ LIKELY ACTIVE |
| IEInternational Environmental Corporation | Oklahoma City | 100–499 | ◐ LIKELY ACTIVE |
| MIMertz Integration, LLC. | Ponca City | 100–499 | ◐ LIKELY ACTIVE |
| MMMickelson Metal Works, LLC | Tulsa | 1–19 | ◐ LIKELY ACTIVE |
| NCNortek Coil Plant | Oklahoma City | 100–499 | ◐ LIKELY ACTIVE |
| NDNortek DCC - Oklahoma City | Oklahoma City | 500+ | ◐ LIKELY ACTIVE |
| NONortek Okarche | Okarche | 500+ | ◐ LIKELY ACTIVE |
| NONortek OKC Parts and Service | Oklahoma City | 20–99 | ◐ LIKELY ACTIVE |
| NMNOV Mobile Rigs Lindsay | Lindsay | 1–19 | ◐ LIKELY ACTIVE |
| NONOV OKC Rig AM | Oklahoma City | 20–99 | ◐ LIKELY ACTIVE |
| NONOV OKC Rig Spares | Oklahoma City | 1–19 | ◐ LIKELY ACTIVE |
| 4D"OK 400 - Dampers" | Tulsa | 20–99 | ◐ LIKELY ACTIVE |
| OPOSO Perforating | Oklahoma City | 20–99 | ◐ LIKELY ACTIVE |
Palfinger USA Operations | Oklahoma City | 100–499 | ◐ LIKELY ACTIVE |